diff --git a/bower_components/core-action-icons/.bower.json b/bower_components/core-action-icons/.bower.json
deleted file mode 100644
index 40ed053..0000000
--- a/bower_components/core-action-icons/.bower.json
+++ /dev/null
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-{
-  "name": "core-action-icons",
-  "homepage": "https://github.com/Polymer/core-action-icons",
-  "version": "0.2.3",
-  "_release": "0.2.3",
-  "_resolution": {
-    "type": "version",
-    "tag": "0.2.3",
-    "commit": "2dbce5513e3332498bd8b7838ba5f26b8579db92"
-  },
-  "_source": "git://github.com/Polymer/core-action-icons.git",
-  "_target": "0.2.3",
-  "_originalSource": "Polymer/core-action-icons"
-}
\ No newline at end of file
diff --git a/bower_components/core-action-icons/README.md b/bower_components/core-action-icons/README.md
deleted file mode 100644
index 1f040fb..0000000
--- a/bower_components/core-action-icons/README.md
+++ /dev/null
@@ -1,8 +0,0 @@
-core-action-icons
-=================
-
-This is a _resource_ component which contains image assets for the default core icon set.
-
-While HTML, JS, and CSS can be combined for production deployments by tools like Vulcanizer, some assets are easier to deliver as is. 
-
-Projects using the default core icon set should include this component in deployments verbatim.
diff --git a/bower_components/core-action-icons/action-icons.png b/bower_components/core-action-icons/action-icons.png
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index 64d08d0..0000000
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diff --git a/bower_components/core-action-icons/action-icons.svg b/bower_components/core-action-icons/action-icons.svg
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diff --git a/bower_components/core-ajax/.bower.json b/bower_components/core-ajax/.bower.json
index 19dfa45..41a2c4f 100644
--- a/bower_components/core-ajax/.bower.json
+++ b/bower_components/core-ajax/.bower.json
@@ -2,17 +2,20 @@
   "name": "core-ajax",
   "private": true,
   "dependencies": {
-    "polymer": "Polymer/polymer#0.2.3"
+    "polymer": "Polymer/polymer#^0.5.0"
   },
-  "version": "0.2.3",
+  "devDependencies": {
+    "polymer-test-tools": "Polymer/polymer-test-tools#master"
+  },
+  "version": "0.5.2",
   "homepage": "https://github.com/Polymer/core-ajax",
-  "_release": "0.2.3",
+  "_release": "0.5.2",
   "_resolution": {
     "type": "version",
-    "tag": "0.2.3",
-    "commit": "86ec30d097037ed3699556567bae6b09b553ce51"
+    "tag": "0.5.2",
+    "commit": "3ef7992d54e89e290b813a463950d9d8953160a1"
   },
   "_source": "git://github.com/Polymer/core-ajax.git",
-  "_target": "0.2.3",
+  "_target": "0.5.2",
   "_originalSource": "Polymer/core-ajax"
 }
\ No newline at end of file
diff --git a/bower_components/core-ajax/README.md b/bower_components/core-ajax/README.md
index 74d1ff1..a0a4145 100644
--- a/bower_components/core-ajax/README.md
+++ b/bower_components/core-ajax/README.md
@@ -1,4 +1,4 @@
 core-ajax
 =========
 
-See the [component page](http://polymer.github.io/core-ajax) for more information.
+See the [component page](http://polymer-project.org/docs/elements/core-elements.html#core-ajax) for more information.
diff --git a/bower_components/core-ajax/bower.json b/bower_components/core-ajax/bower.json
index 36e2029..8e68dc5 100644
--- a/bower_components/core-ajax/bower.json
+++ b/bower_components/core-ajax/bower.json
@@ -2,7 +2,10 @@
   "name": "core-ajax",
   "private": true,
   "dependencies": {
-    "polymer": "Polymer/polymer#0.2.3"
+    "polymer": "Polymer/polymer#^0.5.0"
   },
-  "version": "0.2.3"
+  "devDependencies": {
+    "polymer-test-tools": "Polymer/polymer-test-tools#master"
+  },
+  "version": "0.5.2"
 }
\ No newline at end of file
diff --git a/bower_components/core-ajax/core-ajax.html b/bower_components/core-ajax/core-ajax.html
index 272539b..c0ca0ad 100644
--- a/bower_components/core-ajax/core-ajax.html
+++ b/bower_components/core-ajax/core-ajax.html
@@ -18,9 +18,9 @@
         params='{"alt":"json", "q":"chrome"}'
         handleAs="json"
         on-core-response="{{handleResponse}}"></core-ajax>
- 
+
 With `auto` set to `true`, the element performs a request whenever
-its `url` or `params` properties are changed.
+its `url`, `params` or `body` properties are changed.
 
 Note: The `params` attribute must be double quoted JSON.
 
@@ -31,262 +31,381 @@
 @status beta
 @homepage github.io
 -->
-
 <link rel="import" href="core-xhr.html">
+<polymer-element name="core-ajax" hidden attributes="url handleAs auto params response error method headers body contentType withCredentials progress loading">
+<script>
+
+  Polymer('core-ajax', {
+    /**
+     * Fired when a response is received.
+     *
+     * @event core-response
+     */
+
+    /**
+     * Fired when an error is received.
+     *
+     * @event core-error
+     */
+
+    /**
+     * Fired whenever a response or an error is received.
+     *
+     * @event core-complete
+     */
+
+    /**
+     * The URL target of the request.
+     *
+     * @attribute url
+     * @type string
+     * @default ''
+     */
+    url: '',
+
+    /**
+     * Specifies what data to store in the `response` property, and
+     * to deliver as `event.response` in `response` events.
+     *
+     * One of:
+     *
+     *    `text`: uses `XHR.responseText`.
+     *
+     *    `xml`: uses `XHR.responseXML`.
+     *
+     *    `json`: uses `XHR.responseText` parsed as JSON.
+     *
+     *    `arraybuffer`: uses `XHR.response`.
+     *
+     *    `blob`: uses `XHR.response`.
+     *
+     *    `document`: uses `XHR.response`.
+     *
+     * @attribute handleAs
+     * @type string
+     * @default 'text'
+     */
+    handleAs: '',
+
+    /**
+     * If true, automatically performs an Ajax request when either `url` or `params` changes.
+     *
+     * @attribute auto
+     * @type boolean
+     * @default false
+     */
+    auto: false,
+
+    /**
+     * Parameters to send to the specified URL, as JSON.
+     *
+     * @attribute params
+     * @type string (JSON)
+     * @default ''
+     */
+    params: '',
+
+    /**
+     * The response for the current request, or null if it hasn't
+     * completed yet or the request resulted in error.
+     *
+     * @attribute response
+     * @type Object
+     * @default null
+     */
+    response: null,
+
+    /**
+     * The error for the current request, or null if it hasn't
+     * completed yet or the request resulted in success.
+     *
+     * @attribute error
+     * @type Object
+     * @default null
+     */
+    error: null,
+
+    /**
+     * Whether the current request is currently loading.
+     *
+     * @attribute loading
+     * @type boolean
+     * @default false
+     */
+    loading: false,
+
+    /**
+     * The progress of the current request.
+     *
+     * @attribute progress
+     * @type {loaded: number, total: number, lengthComputable: boolean}
+     * @default {}
+     */
+    progress: null,
+
+    /**
+     * The HTTP method to use such as 'GET', 'POST', 'PUT', or 'DELETE'.
+     * Default is 'GET'.
+     *
+     * @attribute method
+     * @type string
+     * @default ''
+     */
+    method: '',
+
+    /**
+     * HTTP request headers to send.
+     *
+     * Example:
+     *
+     *     <core-ajax
+     *         auto
+     *         url="http://somesite.com"
+     *         headers='{"X-Requested-With": "XMLHttpRequest"}'
+     *         handleAs="json"
+     *         on-core-response="{{handleResponse}}"></core-ajax>
+     *
+     * @attribute headers
+     * @type Object
+     * @default null
+     */
+    headers: null,
+
+    /**
+     * Optional raw body content to send when method === "POST".
+     *
+     * Example:
+     *
+     *     <core-ajax method="POST" auto url="http://somesite.com"
+     *         body='{"foo":1, "bar":2}'>
+     *     </core-ajax>
+     *
+     * @attribute body
+     * @type Object
+     * @default null
+     */
+    body: null,
+
+    /**
+     * Content type to use when sending data.
+     *
+     * @attribute contentType
+     * @type string
+     * @default 'application/x-www-form-urlencoded'
+     */
+    contentType: 'application/x-www-form-urlencoded',
+
+    /**
+     * Set the withCredentials flag on the request.
+     *
+     * @attribute withCredentials
+     * @type boolean
+     * @default false
+     */
+    withCredentials: false,
+
+    /**
+     * Additional properties to send to core-xhr.
+     *
+     * Can be set to an object containing default properties
+     * to send as arguments to the `core-xhr.request()` method
+     * which implements the low-level communication.
+     *
+     * @property xhrArgs
+     * @type Object
+     * @default null
+     */
+    xhrArgs: null,
+
+    created: function() {
+      this.progress = {};
+    },
+
+    ready: function() {
+      this.xhr = document.createElement('core-xhr');
+    },
+
+    receive: function(response, xhr) {
+      if (this.isSuccess(xhr)) {
+        this.processResponse(xhr);
+      } else {
+        this.processError(xhr);
+      }
+      this.complete(xhr);
+    },
 
-<polymer-element name="core-ajax" attributes="url handleAs auto params response method headers body contentType withCredentials">
-
-  <script>
-
-    Polymer('core-ajax', {
-      /**
-       * Fired when a response is received.
-       * 
-       * @event core-response
-       */
- 
-      /**
-       * Fired when an error is received.
-       * 
-       * @event core-error
-       */
- 
-      /**
-       * Fired whenever a response or an error is received.
-       *
-       * @event core-complete
-       */
-
-      /**
-       * The URL target of the request.
-       * 
-       * @attribute url
-       * @type string
-       * @default ''
-       */
-      url: '',
-
-      /**
-       * Specifies what data to store in the `response` property, and
-       * to deliver as `event.response` in `response` events.
-       * 
-       * One of:
-       * 
-       *    `text`: uses `XHR.responseText`.
-       *    
-       *    `xml`: uses `XHR.responseXML`.
-       *    
-       *    `json`: uses `XHR.responseText` parsed as JSON.
-       *  
-       * @attribute handleAs
-       * @type string
-       * @default 'text'
-       */
-      handleAs: '',
-
-      /**
-       * If true, automatically performs an Ajax request when either `url` or `params` changes.
-       *
-       * @attribute auto
-       * @type boolean
-       * @default false
-       */
-      auto: false,
-
-      /**
-       * Parameters to send to the specified URL, as JSON.
-       *  
-       * @attribute params
-       * @type string (JSON)
-       * @default ''
-       */
-      params: '',
-
-      /**
-       * Returns the response object.
-       *
-       * @attribute response
-       * @type Object
-       * @default null
-       */
-      response: null,
-
-      /**
-       * The HTTP method to use such as 'GET', 'POST', 'PUT', or 'DELETE'.
-       * Default is 'GET'.
-       *
-       * @attribute method
-       * @type string
-       * @default ''
-       */
-      method: '',
-
-      /**
-       * HTTP request headers to send.
-       *
-       * Example:
-       *
-       *     <core-ajax 
-       *         auto
-       *         url="http://somesite.com"
-       *         headers='{"X-Requested-With": "XMLHttpRequest"}'
-       *         handleAs="json"
-       *         on-core-response="{{handleResponse}}"></core-ajax>
-       *  
-       * @attribute headers
-       * @type Object
-       * @default null
-       */
-      headers: null,
-
-      /**
-       * Optional raw body content to send when method === "POST".
-       *
-       * Example:
-       *
-       *     <core-ajax method="POST" auto url="http://somesite.com"
-       *         body='{"foo":1, "bar":2}'>
-       *     </core-ajax>
-       *  
-       * @attribute body
-       * @type Object
-       * @default null
-       */
-      body: null,
-
-      /**
-       * Content type to use when sending data.
-       *
-       * @attribute contentType
-       * @type string
-       * @default 'application/x-www-form-urlencoded'
-       */
-      contentType: 'application/x-www-form-urlencoded',
-
-      /**
-       * Set the withCredentials flag on the request.
-       * 
-       * @attribute withCredentials
-       * @type boolean
-       * @default false
-       */
-      withCredentials: false,
-      
-      ready: function() {
-        this.xhr = document.createElement('core-xhr');
-      },
-
-      receive: function(response, xhr) {
-        if (this.isSuccess(xhr)) {
-          this.processResponse(xhr);
-        } else {
-          this.error(xhr);
-        }
-        this.complete(xhr);
-      },
-
-      isSuccess: function(xhr) {
-        var status = xhr.status || 0;
-        return !status || (status >= 200 && status < 300);
-      },
+    isSuccess: function(xhr) {
+      var status = xhr.status || 0;
+      return !status || (status >= 200 && status < 300);
+    },
 
-      processResponse: function(xhr) {
-        var response = this.evalResponse(xhr);
+    processResponse: function(xhr) {
+      var response = this.evalResponse(xhr);
+      if (xhr === this.activeRequest) {
         this.response = response;
-        this.fire('core-response', {response: response, xhr: xhr});
-      },
-
-      error: function(xhr) {
-        var response = xhr.status + ': ' + xhr.responseText;
-        this.fire('core-error', {response: response, xhr: xhr});
-      },
-
-      complete: function(xhr) {
-        this.fire('core-complete', {response: xhr.status, xhr: xhr});
-      },
-
-      evalResponse: function(xhr) {
-        return this[(this.handleAs || 'text') + 'Handler'](xhr);
-      },
-
-      xmlHandler: function(xhr) {
-        return xhr.responseXML;
-      },
-
-      textHandler: function(xhr) {
-        return xhr.responseText;
-      },
-
-      jsonHandler: function(xhr) {
-        var r = xhr.responseText;
-        try {
-          return JSON.parse(r);
-        } catch (x) {
-          return r;
+      }
+      this.fire('core-response', {response: response, xhr: xhr});
+    },
+
+    processError: function(xhr) {
+      var response = xhr.status + ': ' + xhr.responseText;
+      if (xhr === this.activeRequest) {
+        this.error = response;
+      }
+      this.fire('core-error', {response: response, xhr: xhr});
+    },
+
+    processProgress: function(progress, xhr) {
+      if (xhr !== this.activeRequest) {
+        return;
+      }
+      // We create a proxy object here because these fields
+      // on the progress event are readonly properties, which
+      // causes problems in common use cases (e.g. binding to
+      // <paper-progress> attributes).
+      var progressProxy = {
+        lengthComputable: progress.lengthComputable,
+        loaded: progress.loaded,
+        total: progress.total
+      }
+      this.progress = progressProxy;
+    },
+
+    complete: function(xhr) {
+      if (xhr === this.activeRequest) {
+        this.loading = false;
+      }
+      this.fire('core-complete', {response: xhr.status, xhr: xhr});
+    },
+
+    evalResponse: function(xhr) {
+      return this[(this.handleAs || 'text') + 'Handler'](xhr);
+    },
+
+    xmlHandler: function(xhr) {
+      return xhr.responseXML;
+    },
+
+    textHandler: function(xhr) {
+      return xhr.responseText;
+    },
+
+    jsonHandler: function(xhr) {
+      var r = xhr.responseText;
+      try {
+        return JSON.parse(r);
+      } catch (x) {
+        console.warn('core-ajax caught an exception trying to parse response as JSON:');
+        console.warn('url:', this.url);
+        console.warn(x);
+        return r;
+      }
+    },
+
+    documentHandler: function(xhr) {
+      return xhr.response;
+    },
+
+    blobHandler: function(xhr) {
+      return xhr.response;
+    },
+
+    arraybufferHandler: function(xhr) {
+      return xhr.response;
+    },
+
+    urlChanged: function() {
+      if (!this.handleAs) {
+        var ext = String(this.url).split('.').pop();
+        switch (ext) {
+          case 'json':
+            this.handleAs = 'json';
+            break;
         }
-      },
-
-      urlChanged: function() {
-        if (!this.handleAs) {
-          var ext = String(this.url).split('.').pop();
-          switch (ext) {
-            case 'json':
-              this.handleAs = 'json';
-              break;
+      }
+      this.autoGo();
+    },
+
+    paramsChanged: function() {
+      this.autoGo();
+    },
+
+    bodyChanged: function() {
+      this.autoGo();
+    },
+
+    autoChanged: function() {
+      this.autoGo();
+    },
+
+    // TODO(sorvell): multiple side-effects could call autoGo
+    // during one micro-task, use a job to have only one action
+    // occur
+    autoGo: function() {
+      if (this.auto) {
+        this.goJob = this.job(this.goJob, this.go, 0);
+      }
+    },
+
+    /**
+     * Performs an Ajax request to the specified URL.
+     *
+     * @method go
+     */
+    go: function() {
+      var args = this.xhrArgs || {};
+      // TODO(sjmiles): we may want XHR to default to POST if body is set
+      args.body = this.body || args.body;
+      args.params = this.params || args.params;
+      if (args.params && typeof(args.params) == 'string') {
+        args.params = JSON.parse(args.params);
+      }
+      args.headers = this.headers || args.headers || {};
+      if (args.headers && typeof(args.headers) == 'string') {
+        args.headers = JSON.parse(args.headers);
+      }
+      var hasContentType = Object.keys(args.headers).some(function (header) {
+        return header.toLowerCase() === 'content-type';
+      });
+      // No Content-Type should be specified if sending `FormData`.  
+      // The UA must set the Content-Type w/ a calculated  multipart boundary ID.
+      if (args.body instanceof FormData) {
+        delete args.headers['Content-Type'];
+      } 
+      else if (!hasContentType && this.contentType) {
+        args.headers['Content-Type'] = this.contentType;
+      }
+      if (this.handleAs === 'arraybuffer' || this.handleAs === 'blob' ||
+          this.handleAs === 'document') {
+        args.responseType = this.handleAs;
+      }
+      args.withCredentials = this.withCredentials;
+      args.callback = this.receive.bind(this);
+      args.url = this.url;
+      args.method = this.method;
+
+      this.response = this.error = this.progress = null;
+      this.activeRequest = args.url && this.xhr.request(args);
+      if (this.activeRequest) {
+        this.loading = true;
+        var activeRequest = this.activeRequest;
+        // IE < 10 doesn't support progress events.
+        if ('onprogress' in activeRequest) {
+          this.activeRequest.addEventListener(
+              'progress',
+              function(progress) {
+                this.processProgress(progress, activeRequest);
+              }.bind(this), false);
+        } else {
+          this.progress = {
+            lengthComputable: false,
           }
         }
-        this.autoGo();
-      },
-
-      paramsChanged: function() {
-        this.autoGo();
-      },
-
-      autoChanged: function() {
-        this.autoGo();
-      },
-
-      // TODO(sorvell): multiple side-effects could call autoGo 
-      // during one micro-task, use a job to have only one action 
-      // occur
-      autoGo: function() {
-        if (this.auto) {
-          this.goJob = this.job(this.goJob, this.go, 0);
-        }
-      },
-
-      /**
-       * Performs an Ajax request to the specified URL.
-       *
-       * @method go
-       */
-      go: function() {
-        var args = this.xhrArgs || {};
-        // TODO(sjmiles): alternatively, we could force POST if body is set
-        if (this.method === 'POST') {
-          args.body = this.body || args.body;
-        }
-        args.params = this.params || args.params;
-        if (args.params && typeof(args.params) == 'string') {
-          args.params = JSON.parse(args.params);
-        }
-        args.headers = this.headers || args.headers || {};
-        if (args.headers && typeof(args.headers) == 'string') {
-          args.headers = JSON.parse(args.headers);
-        }
-        if (this.contentType) {
-          args.headers['content-type'] = this.contentType;
-        }
-        
-        args.withCredentials = this.withCredentials;
-        args.callback = this.receive.bind(this);
-        args.url = this.url;
-        args.method = this.method;
-        return args.url && this.xhr.request(args);
       }
+      return this.activeRequest;
+    }
 
-    });
-
-  </script>
+  });
 
+</script>
 </polymer-element>
diff --git a/bower_components/core-ajax/core-xhr.html b/bower_components/core-ajax/core-xhr.html
index c4c3652..dbc531b 100644
--- a/bower_components/core-ajax/core-xhr.html
+++ b/bower_components/core-ajax/core-xhr.html
@@ -22,48 +22,12 @@
 
 <link rel="import" href="../polymer/polymer.html">
 
-<polymer-element name="core-xhr">
-
-  <template>
-
-    <style>
-      :host {
-        display: none;
-      }
-    </style>
-
-  </template>
+<polymer-element name="core-xhr" hidden>
 
   <script>
 
     Polymer('core-xhr', {
 
-      makeReadyStateHandler: function(xhr, callback) {
-        xhr.onreadystatechange = function() {
-          if (xhr.readyState == 4) {
-            callback && callback.call(null, xhr.response, xhr);
-          }
-        };
-      },
-
-      setRequestHeaders: function(xhr, headers) {
-        if (headers) {
-          for (var name in headers) {
-            xhr.setRequestHeader(name, headers[name]);
-          }
-        }
-      },
-
-      toQueryString: function(params) {
-        var r = [];
-        for (var n in params) {
-          var v = params[n];
-          n = encodeURIComponent(n);
-          r.push(v == null ? n : (n + '=' + encodeURIComponent(v)));
-        }
-        return r.join('&');
-      },
-
       /**
        * Sends a HTTP request to the server and returns the XHR object.
        *
@@ -85,10 +49,13 @@
         var url = options.url;
         var method = options.method || 'GET';
         var async = !options.sync;
+        //
         var params = this.toQueryString(options.params);
         if (params && method == 'GET') {
           url += (url.indexOf('?') > 0 ? '&' : '?') + params;
         }
+        var xhrParams = this.isBodyMethod(method) ? (options.body || params) : null;
+        //
         xhr.open(method, url, async);
         if (options.responseType) {
           xhr.responseType = options.responseType;
@@ -98,11 +65,48 @@
         }
         this.makeReadyStateHandler(xhr, options.callback);
         this.setRequestHeaders(xhr, options.headers);
-        xhr.send(method == 'POST' ? (options.body || params) : null);
+        xhr.send(xhrParams);
         if (!async) {
           xhr.onreadystatechange(xhr);
         }
         return xhr;
+      },
+    
+      toQueryString: function(params) {
+        var r = [];
+        for (var n in params) {
+          var v = params[n];
+          n = encodeURIComponent(n);
+          r.push(v == null ? n : (n + '=' + encodeURIComponent(v)));
+        }
+        return r.join('&');
+      },
+
+      isBodyMethod: function(method) {
+        return this.bodyMethods[(method || '').toUpperCase()];
+      },
+      
+      bodyMethods: {
+        POST: 1,
+        PUT: 1,
+        PATCH: 1,
+        DELETE: 1
+      },
+
+      makeReadyStateHandler: function(xhr, callback) {
+        xhr.onreadystatechange = function() {
+          if (xhr.readyState == 4) {
+            callback && callback.call(null, xhr.response, xhr);
+          }
+        };
+      },
+
+      setRequestHeaders: function(xhr, headers) {
+        if (headers) {
+          for (var name in headers) {
+            xhr.setRequestHeader(name, headers[name]);
+          }
+        }
       }
 
     });
diff --git a/bower_components/core-ajax/demo-progress.html b/bower_components/core-ajax/demo-progress.html
new file mode 100644
index 0000000..da6c11d
--- /dev/null
+++ b/bower_components/core-ajax/demo-progress.html
@@ -0,0 +1,65 @@
+<!DOCTYPE html>
+<html>
+<head>
+<script src="../webcomponentsjs/webcomponents.js" debug></script>
+  <meta charset="utf-8">
+  <title>Race condition</title>
+</head>
+<body>
+  <link rel="import" href="core-ajax.html">
+  <link rel="import" href="../paper-progress/paper-progress.html">
+  <polymer-element name="progress-test">
+    <template>
+      <core-ajax
+          id="ajax" auto
+          url="http://httpbin.org/drip"
+          params="{{ {numbytes: numbytes, duration:5} }}"
+          response="{{response}}"
+          progress="{{progress}}"
+          loading="{{loading}}"
+          ></core-ajax>
+
+      <!--
+        Ordinarily you'd gate on progress.lengthComputable, but we know the
+        length in this case (and httpbin sadly doesn't return a
+        Content-Length header for this requesthere).
+
+        https://github.com/kennethreitz/httpbin/pull/160
+       -->
+      <div>
+        <button on-click="{{restart}}">Restart</button>
+        <template if="{{loading}}">
+          Loading...
+        </template>
+        <template if="{{!loading}}">
+          Loaded!
+        </template>
+      </div>
+      <template if="{{loading && progress.loaded}}">
+        <paper-progress
+            value="{{progress.loaded}}"
+            min="0"
+            max="{{numbytes}}">
+        </paper-progress><br>
+      </template>
+    </template>
+    <script>
+      Polymer('progress-test', {
+        loading: true,
+        i: 0,
+        numbytes: 1000,
+        pretty: function(i) {
+          return JSON.stringify(i, null, 2);
+        },
+        restart: function() {
+          this.$.ajax.abort();
+          this.$.ajax.go();
+        }
+      });
+    </script>
+
+  </polymer-element>
+
+  <progress-test></progress-test>
+</body>
+</html>
diff --git a/bower_components/core-ajax/demo.html b/bower_components/core-ajax/demo.html
index b42221d..24d97a5 100644
--- a/bower_components/core-ajax/demo.html
+++ b/bower_components/core-ajax/demo.html
@@ -12,13 +12,13 @@
 
   <title>core-ajax</title>
 
-  <script src="../platform/platform.js"></script>
+  <script src="../webcomponentsjs/webcomponents.js"></script>
   <link rel="import" href="core-ajax.html">
 
 </head>
 <body>
 
-  <core-ajax auto url="http://gdata.youtube.com/feeds/api/videos/" 
+  <core-ajax auto url="//gdata.youtube.com/feeds/api/videos/" 
       params='{"alt":"json", "q":"chrome"}'
       handleAs="json"></core-ajax>
    
diff --git a/bower_components/core-ajax/index.html b/bower_components/core-ajax/index.html
index 85106b5..294215a 100644
--- a/bower_components/core-ajax/index.html
+++ b/bower_components/core-ajax/index.html
@@ -10,8 +10,7 @@
 <html>
 <head>
 
-  <script src="../platform/platform.js"></script>
-  <link rel="import" href="../polymer/polymer.html">
+  <script src="../webcomponentsjs/webcomponents.js"></script>
   <link rel="import" href="../core-component-page/core-component-page.html">
 
 </head>
diff --git a/bower_components/core-ajax/metadata.html b/bower_components/core-ajax/metadata.html
new file mode 100644
index 0000000..7cad1c5
--- /dev/null
+++ b/bower_components/core-ajax/metadata.html
@@ -0,0 +1,23 @@
+<!--
+    @license
+    Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+    This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+    The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+    The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+    Code distributed by Google as part of the polymer project is also
+    subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+-->
+<x-meta id="core-ajax" label="Ajax" group="Core">
+
+  <property name="handleAs" kind="select" options="json,text,xml,arraybuffer,blob,document"></property>
+  <property name="method" kind="select" options="GET,POST,PUT,DELETE"></property>
+
+  <template>
+    <core-ajax handleAs="json" method="GET"></core-ajax>
+  </template>
+
+  <template id="imports">
+    <link rel="import" href="core-ajax.html">
+  </template>
+
+</x-meta>
diff --git a/bower_components/core-ajax/test/core-ajax-progress.html b/bower_components/core-ajax/test/core-ajax-progress.html
new file mode 100644
index 0000000..7f28a34
--- /dev/null
+++ b/bower_components/core-ajax/test/core-ajax-progress.html
@@ -0,0 +1,108 @@
+<!doctype html>
+<!--
+Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+Code distributed by Google as part of the polymer project is also
+subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+-->
+<html>
+<head>
+  <title>core-ajax</title>
+
+  <script src="../../webcomponentsjs/webcomponents.js"></script>
+  <script src="../../web-component-tester/browser.js"></script>
+
+
+
+  <link rel="import" href="../core-ajax.html">
+
+</head>
+<body>
+
+  <core-ajax
+    handleAs="json"
+    auto></core-ajax>
+
+<!--
+    Test consistency of core-ajax's loading properties.
+  -->
+  <script>
+    test('progress', function(done) {
+      var ajax = document.querySelector("core-ajax");
+      var xhr = sinon.useFakeXMLHttpRequest();
+      var headers = {
+        "Content-Type": "text/json"
+      };
+      var body = '{"content": "plentiful"}'
+      var requests = this.requests = [];
+      xhr.onCreate = function (xhr) {
+          requests.push(xhr);
+          // Polymer inspects the xhr object for the precense of onprogress to determine
+          // whether to attach an event listener.
+          xhr['onprogress'] = null;
+      };
+      var progressEvent = function(lengthComputable, loaded, total) {
+        var progress = new ProgressEvent('progress', {
+          lengthComputable: lengthComputable,
+          loaded: loaded,
+          total: total
+        });
+        return progress;
+      }
+
+      // Fake a file download by sending multiple progress events.
+      async.series([
+        function(cb) {
+          ajax.url="http://example.org/downloadLargeFile"
+          cb();
+        },
+        flush,
+        animationFrameFlush,
+        function(cb) {
+          requests[0].dispatchEvent(progressEvent(true, 10, 100));
+          cb();
+        },
+        flush,
+        animationFrameFlush,
+        function(cb) {
+          assert(ajax.loading === true,
+              "Request partially complete, but loading property was false.");
+          var progress = ajax.progress;
+          assert(progress.lengthComputable, "Progress should be computable");
+          assert(progress.loaded == 10, "Expected 10 bytes loaded, got " + progress.loaded);
+          assert(progress.total == 100, "Expected 100 bytes total, got " + progress.total);
+          cb();
+        },
+        animationFrameFlush,
+        function(cb) {
+          requests[0].dispatchEvent(progressEvent(true, 100, 100));
+          cb();
+        },
+        animationFrameFlush,
+        function(cb) {
+          assert(ajax.loading === true,
+              "Request partially complete, but loading property was false.");
+          var progress = ajax.progress;
+          assert(progress.lengthComputable, "Progress should be computable");
+          assert(progress.loaded == 100, "Expected 10 bytes loaded, got " + progress.loaded);
+          assert(progress.total == 100, "Expected 100 bytes total, got " + progress.total);
+          cb();
+        },
+        function(cb) {
+          requests[0].respond(200, headers, body);
+          cb();
+        },
+        animationFrameFlush,
+        function(cb) {
+          assert(ajax.loading === false,
+              "Request complete, but loading property was true.");
+          assert(ajax.response.content === "plentiful", "response not parsed");
+          cb();
+        }
+      ], done);
+    });
+</script>
+</body>
+</html>
diff --git a/bower_components/core-ajax/test/core-ajax-race.html b/bower_components/core-ajax/test/core-ajax-race.html
new file mode 100644
index 0000000..700ad12
--- /dev/null
+++ b/bower_components/core-ajax/test/core-ajax-race.html
@@ -0,0 +1,81 @@
+<!doctype html>
+<!--
+Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+Code distributed by Google as part of the polymer project is also
+subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+-->
+<html>
+<head>
+  <title>core-ajax</title>
+
+  <script src="../../webcomponentsjs/webcomponents.js"></script>
+  <script src="../../web-component-tester/browser.js"></script>
+
+
+
+  <link rel="import" href="../core-ajax.html">
+
+</head>
+<body>
+
+  <core-ajax
+    handleAs="json"
+    auto></core-ajax>
+
+<!--
+    Test that when core-ajax fires multiple times as requests are updated,
+    only the response from the most recent request is used to update the response
+    object.
+  -->
+  <script>
+    test('race-condition', function(done) {
+      var ajax = document.querySelector("core-ajax");
+      var xhr = sinon.useFakeXMLHttpRequest();
+      var headers = {
+        "Content-Type": "text/json"
+      };
+      var body = function(url) {
+        return '{"url": "' + url + '"}';
+      };
+      var requests = [];
+      xhr.onCreate = function (xhr) {
+          requests.push(xhr);
+      };
+
+      // Make request1, then request2. request2 returns first, followed by request1.
+      async.series([
+        function(cb) {
+          ajax.url="http://example.org/request1"
+          cb();
+        },
+        animationFrameFlush,
+        function(cb) {
+          ajax.url="http://example.org/request2"
+          cb();
+        },
+        animationFrameFlush,
+        function(cb) {
+          requests[0].respond(200, headers, body("http://example.org/request2"));
+          cb();
+        },
+        flush,
+        function(cb) {
+          requests[1].respond(200, headers, body("http://example.org/request1"));
+          cb();
+        },
+        flush,
+        function(cb) {
+          assert(ajax.response.url.match('request1'),
+              "Race condition detected. An earlier request's delayed response " +
+              "caused the more recent request's response to be overwritten.");
+          done();
+          cb();
+        }
+      ], function(){});
+    });
+</script>
+</body>
+</html>
diff --git a/bower_components/core-ajax/test/core-ajax.html b/bower_components/core-ajax/test/core-ajax.html
new file mode 100644
index 0000000..ea21f09
--- /dev/null
+++ b/bower_components/core-ajax/test/core-ajax.html
@@ -0,0 +1,287 @@
+<!doctype html>
+<!--
+Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+Code distributed by Google as part of the polymer project is also
+subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+-->
+<html>
+<head>
+  <title>core-ajax</title>
+
+  <script src="../../webcomponentsjs/webcomponents.js"></script>
+  <script src="../../web-component-tester/browser.js"></script>
+
+  <link rel="import" href="../core-ajax.html">
+
+</head>
+<body>
+  <core-ajax></core-ajax>
+
+  <script>
+  suite('core-ajax', function() {
+    var xhr, requests, ajax;
+    suiteSetup(function() {
+      xhr = sinon.useFakeXMLHttpRequest();
+      ajax = document.querySelector("core-ajax");
+      xhr.onCreate = function (xhr) {
+        requests.push(xhr);
+      };
+      // Reset the core-ajax element before each test.
+      ajax.auto = false;
+      ajax.url = '';
+      ajax.params = '';
+      ajax.handleAs = 'text';
+      ajax.body = '';
+    });
+    setup(function() {
+      requests = [];
+    });
+    suite('handleAs', function() {
+      suite('text', function(){
+        var headers = {
+          "Content-Type": "text/plain"
+        };
+        setup(function(done){
+          async.series([
+            function(cb){
+              ajax.handleAs = 'text';
+              ajax.url = "http://example.com/text"
+              ajax.auto = true;
+              cb();
+            },
+            animationFrameFlush,
+            function(cb){
+              requests[0].respond(200, headers, "test text");
+              cb();
+            }
+            ], done);
+        });
+        test('Raw text should pass through', function(){
+          assert.equal(ajax.response, "test text")
+        });
+      });
+      suite('xml', function(){
+        var headers = {
+          "Content-Type": "text/xml"
+        };
+        setup(function(done){
+          async.series([
+            function(cb){
+              ajax.handleAs = 'xml';
+              ajax.url = "http://example.com/xml"
+              ajax.auto = true;
+              cb();
+            },
+            animationFrameFlush,
+            function(cb){
+              requests[0].respond(200, headers,
+                          "<note>" +
+                          "<to>AJ</to>" +
+                          "<from>Dog</from>" +
+                          "<subject>Reminder</subject>" +
+                          "<body><q>Feed me!</q></body>" +
+                          "</note>");
+              cb();
+            }
+            ], done);
+        });
+        test('XML should be returned with queryable structure', function(){
+          var q = ajax.response.querySelector("note body q");
+          assert.equal(q.childNodes[0].textContent, "Feed me!");
+          var to = ajax.response.querySelector("to");
+          assert.equal(to.childNodes[0].textContent, "AJ");
+        })});
+      suite('json', function(){
+        var headers = {
+          "Content-Type": "text/json"
+        };
+        setup(function(done){
+          async.series([
+            function(cb){
+              ajax.handleAs = 'json';
+              ajax.url = "http://example.com/json"
+              ajax.auto = true;
+              cb();
+            },
+            animationFrameFlush,
+            function(cb){
+              requests[0].respond(200, headers,
+                          '{"object" : {"list" : [2, 3, {"key": "value"}]}}');
+              cb();
+            }
+            ], done);
+        });
+        test('JSON should be returned as an Object', function(){
+          var r = ajax.response;
+          assert.equal(r.object.list[1], 3);
+          assert.equal(r.object.list[2].key, "value");
+        });
+      });
+      suite('arraybuffer', function(){
+        var headers = {
+          "Content-Type": "text/plain"
+        };
+        setup(function(done){
+          async.series([
+            function(cb){
+              ajax.handleAs = 'arraybuffer';
+              ajax.url = "http://example.com/data"
+              ajax.auto = true;
+              cb();
+            },
+            animationFrameFlush,
+            function(cb){
+              var buf = new ArrayBuffer(8*4);
+              var resp = new Int32Array(buf);
+              resp[3] = 12;
+              resp[6] = 21;
+              requests[0].response = buf;
+              requests[0].respond(200, headers, 'blahblahblah');
+              cb();
+            }
+            ], done);
+        });
+        test('arraybuffer response should be passed through', function(){
+          var r = ajax.response;
+          var ints = new Int32Array(r);
+          assert.equal(ints[3], 12);
+          assert.equal(ints[6], 21);
+        });
+      });
+      suite('blob', function(){});
+      suite('document', function(){});
+    });
+    suite('auto', function() {
+      suiteSetup(function(){
+        ajax.url = "http://example.com/"
+        ajax.auto = true;
+      });
+      test('url change should trigger request', function(done){
+        async.series([
+          function(cb){
+            ajax.url = "http://example.com/auto";
+            cb();
+          },
+          animationFrameFlush,
+          function(cb){
+            assert.equal(requests.length, 1);
+            cb();
+          }
+          ], done);
+      });
+      test('params change should trigger request', function(done){
+        async.series([
+          function(cb){
+            ajax.params = {param: "value"};
+            cb();
+          },
+          animationFrameFlush,
+          function(cb){
+            assert.equal(requests.length, 1);
+            cb();
+          }
+          ], done);
+      });
+      test('body change should trigger request', function(done){
+        async.series([
+          function(cb){
+            ajax.method = "POST";
+            ajax.body = "bodystuff";
+            cb();
+          },
+          animationFrameFlush,
+          function(cb){
+            assert.equal(requests.length, 1);
+            cb();
+          }
+          ], done);
+      });
+    });
+    suite('events', function(){
+      var headers = {
+        "Content-Type": "text/plain"
+      };
+      var body = "somebodytext";
+      var responded;
+      setup(function(done){
+        async.series([
+          function(cb){
+            ajax.auto = false;
+            cb();
+          },
+          animationFrameFlush,
+          function(cb){;
+            ajax.handleAs = 'text';
+            ajax.url = "http://example.com/text"
+            ajax.auto = true;
+            cb();
+          },
+          animationFrameFlush,
+          ], done);
+        responded = false;
+      });
+      suite('core-response', function(){
+        test('core-response should be fired on success', function(done){
+          window.addEventListener('core-response', function(response, xhr){
+            responded = true;
+          });
+          requests[0].respond(200, headers, body);
+          assert.isTrue(responded);
+          done();
+        });
+        test('core-response should not be fired on failure', function(done){
+          window.addEventListener('core-response', function(response, xhr){
+            responded = true;
+          });
+          requests[0].respond(404, headers, body);
+          assert.isFalse(responded);
+          done();
+        });
+      });
+      suite('core-error', function(){
+        test('core-error should be fired on failure', function(done){
+          window.addEventListener('core-error', function(response, xhr){
+            responded = true;
+          });
+          requests[0].respond(404, headers, body);
+          assert.isTrue(responded);
+          done();
+        });
+        test('core-error should not be fired on success', function(done){
+          var responded = false;
+          window.addEventListener('core-error', function(response, xhr){
+            responded = true;
+          });
+          requests[0].respond(200, headers, body);
+          assert.isFalse(responded);
+          done();
+        });
+      });
+      suite('core-complete', function(){
+        test('core-complete should be fired on success', function(done){
+          window.addEventListener('core-complete', function(response, xhr){
+            responded = true;
+          });
+          requests[0].respond(200, headers, body);
+          assert.isTrue(responded);
+          done();
+        });
+        test('core-complete should be fired on failure', function(done){
+          var responded = false;
+          window.addEventListener('core-complete', function(response, xhr){
+            responded = true;
+          });
+          requests[0].respond(404, headers, body);
+          assert.isTrue(responded);
+          done();
+        });
+      });
+    });
+  });
+  </script>
+
+</body>
+</html>
diff --git a/bower_components/core-ajax/test/index.html b/bower_components/core-ajax/test/index.html
new file mode 100644
index 0000000..93161c3
--- /dev/null
+++ b/bower_components/core-ajax/test/index.html
@@ -0,0 +1,17 @@
+<!doctype html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <script src="../../webcomponentsjs/webcomponents.js"></script>
+    <script src="../../web-component-tester/browser.js"></script>
+  </head>
+  <body>
+    <script>
+      WCT.loadSuites([
+        'core-ajax-progress.html',
+        'core-ajax-race.html',
+	      'core-ajax.html'
+      ]);
+    </script>
+  </body>
+</html>
diff --git a/bower_components/core-component-page/.bower.json b/bower_components/core-component-page/.bower.json
index 5cf9cb7..a52dc75 100644
--- a/bower_components/core-component-page/.bower.json
+++ b/bower_components/core-component-page/.bower.json
@@ -2,18 +2,18 @@
   "name": "core-component-page",
   "private": true,
   "dependencies": {
-    "platform": "Polymer/platform#0.2.3",
-    "core-action-icons": "Polymer/core-action-icons#0.2.3"
+    "webcomponentsjs": "Polymer/webcomponentsjs",
+    "polymer": "Polymer/polymer#^0.5"
   },
-  "version": "0.2.3",
+  "version": "0.5.6",
   "homepage": "https://github.com/Polymer/core-component-page",
-  "_release": "0.2.3",
+  "_release": "0.5.6",
   "_resolution": {
     "type": "version",
-    "tag": "0.2.3",
-    "commit": "37d68bb980da41a03aa08c2a59ad3ccf0f42cf10"
+    "tag": "0.5.6",
+    "commit": "01a1d3968d7ece144783bcd03bc87b18344265e3"
   },
   "_source": "git://github.com/Polymer/core-component-page.git",
-  "_target": "0.2.3",
+  "_target": "^0.5.0",
   "_originalSource": "Polymer/core-component-page"
 }
\ No newline at end of file
diff --git a/bower_components/core-component-page/README.md b/bower_components/core-component-page/README.md
index 8c0d00b..9e23842 100644
--- a/bower_components/core-component-page/README.md
+++ b/bower_components/core-component-page/README.md
@@ -1,4 +1,9 @@
 core-component-page
 ===================
 
-See the [component page](http://polymer.github.io/core-component-page) for more information.
+**This element is compatible with Polymer 0.5 and lower only, and will be deprecated.**  
+You can check out a similar 0.8-compatible version of this element at [https://github.com/polymerelements/iron-components-page](https://github.com/polymerelements/iron-component-page)
+
+See the [component page](https://www.polymer-project.org/0.5/docs/elements/core-component-page.html) for more information.
+
+Note: this is the vulcanized version of [`core-component-page-dev`](https://github.com/Polymer/core-component-page-dev) (the source).
diff --git a/bower_components/core-component-page/bower.json b/bower_components/core-component-page/bower.json
index fc263c3..df2d599 100644
--- a/bower_components/core-component-page/bower.json
+++ b/bower_components/core-component-page/bower.json
@@ -2,8 +2,8 @@
   "name": "core-component-page",
   "private": true,
   "dependencies": {
-    "platform": "Polymer/platform#0.2.3",
-    "core-action-icons": "Polymer/core-action-icons#0.2.3"
+    "webcomponentsjs": "Polymer/webcomponentsjs",
+    "polymer": "Polymer/polymer#^0.5"
   },
-  "version": "0.2.3"
+  "version": "0.5.6"
 }
\ No newline at end of file
diff --git a/bower_components/core-component-page/core-component-page.html b/bower_components/core-component-page/core-component-page.html
index 9cac836..82a87e7 100644
--- a/bower_components/core-component-page/core-component-page.html
+++ b/bower_components/core-component-page/core-component-page.html
@@ -1,6239 +1 @@
-<!--
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
--->
-
-<style>
-
-  body {
-    margin: 0;
-  }
-
-</style>
-
-<!--
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
--->
-
-<!--
-@group Polymer Core Elements
-
-The `core-layout` element is a helper for using
-[CSS3 Flexible Boxes](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Flexible_boxes).
-A `core-layout` element enables a set of css selectors for easy flexbox styling.
-
-Example:
-
-    <core-layout flow="h">
-      <div>Left</div>
-      <div core-flex>Main</div>
-      <div>Right</div>
-    </core-layout>
-
- Renders something like this:
-
-    ---------------------------------
-    |-------------------------------|
-    ||Left|       Main       |Right||
-    |-------------------------------|
-    ---------------------------------
-
-__Note__: the `core-layout` element applies layout to itself if it has children or to
-its parent element, if it does not. This feature allows you to apply layout to an
-arbitrary parent.
-
-Elements can flow (layout) horizontally, such that their items are stack
-left to right or vertically, such that their items stack top to bottom. The
-default is horizontal flow. Set flow to `h` or `v`.
-
-To make a particular child _flexible_, use the `core-flex` attribute.
-You can control flexibility from 1 to 5 by giving the attribute a
-corresponding value. For other values, apply the css manually.
-
-It's common in flexbox parlance to hear the terms _main axis_ and _cross axis_.
-For an `h` flow the main axis is horizontal and the cross axis is vertical.
-The axis are exchanged for a `v` flow.
-
-To effect alignment in the main axis, use the `justify` attribute. The 
-supported values are `start`, `center`, `end`, and `between`.
-
-To effect alignment in the cross axis, use the `align` attribute. The
-supported values are `start`, `center`, and `end`.
-
-Note, it's also possible to include the `core-layout.css` stylesheet separate
-from the `core-layout` element. Including the element automatically includes
-the stylesheet. To use the stylesheet independent of the element, the same
-attributes can be used but they should be prefixed with `core-`.
-
-More examples:
-
-    <core-layout flow="v">
-
-      <div>Header</div>
-      <div core-flex>Body</div>
-      <div>Footer</div>
-
-    </core-layout>
-
-    ----------
-    ||------||
-    ||Header||
-    ||------||
-    ||Body  ||
-    ||      ||
-    ||      ||
-    ||      ||
-    ||      ||
-    ||      ||
-    ||      ||
-    ||------||
-    ||Footer||
-    ||------||
-    ----------
-
-Justify:
-
-    <core-layout flow="h" justify="end">
-      <div core-flex>Left</div>
-      <div>Main</div>
-      <div>Right</div>
-    </core-layout>
-
-    ---------------------------------
-    |-------------------------------|
-    ||              Left|Main|Right||
-    |-------------------------------|
-    ---------------------------------
-
-Align:
-
-    <core-layout flow="h" align="center">
-      <div>Left</div>
-      <div core-flex>Main</div>
-      <div>Right</div>
-    </core-layout>
-
-    ---------------------------------
-    |-------------------------------|
-    ||    |                  |     ||
-    ||Left|       Main       |Right||
-    ||    |                  |     ||
-    |-------------------------------|
-    ---------------------------------
-
-
-To layout contents of a parent element, place a `core-layout` inside of it:
-
-    <some-element>
-      <core-layout flow="h"></core-layout>
-      <div>Left</div>
-      <div core-flex>Main</div>
-      <div>Right</div>
-    <some-element>
-
-    ---------------------------------
-    |-------------------------------|
-    ||Left|       Main       |Right||
-    |-------------------------------|
-    ---------------------------------
-
-You may also use the `core-layout` stylesheet directly:
-
-    <link rel="stylesheet" href="../core-layout/core-layout.css">
-    <div core-flow="h" core-justify="end">
-      <div core-flex>Left</div>
-      <div>Main</div>
-      <div>Right</div>  
-    </div>
-
-    ---------------------------------
-    |-------------------------------|
-    ||              Left|Main|Right||
-    |-------------------------------|
-    ---------------------------------
-
-@element core-layout
--->
-
-<link rel="import" href="../polymer/polymer.html">
-
-<polymer-element name="core-layout" attributes="flow justify align isContainer" assetpath="../core-layout/">
-<template>
-
-  <style no-shim="">/*
-Copyright 2013 The Polymer Authors. All rights reserved.
-Use of this source code is governed by a BSD-style
-license that can be found in the LICENSE file.
-*/
-
-[core-flow] {
-  display: -webkit-box !important;
-  display: -ms-flexbox !important;
-  display: -moz-flex !important;
-  display: -webkit-flex !important;
-  display: flex !important;
-}
-
-[core-flow=h] {
-  -webkit-box-orient: horizontal;
-  -ms-flex-direction: row;
-  -moz-flex-direction: row;
-  -webkit-flex-direction: row;
-  flex-direction: row;
-}
-
-[core-flow=h][core-reverse] {
-  -webkit-box-direction: reverse;
-  -ms-flex-direction: row-reverse;
-  -moz-flex-direction: row-reverse;
-  -webkit-flex-direction: row-reverse;
-  flex-direction: row-reverse;
-}
-
-[core-flow=v] {
-  -webkit-box-orient: vertical;
-  -ms-flex-direction: column;
-  -moz-flex-direction: column;
-  -webkit-flex-direction: column;
-  flex-direction: column;
-}
-
-[core-flow=v][core-reverse] {
-  -webkit-box-direction: reverse;
-  -ms-flex-direction: column-reverse;
-  -moz-flex-direction: column-reverse;
-  -webkit-flex-direction: column-reverse;
-  flex-direction: column-reverse;
-}
-
-[core-relative] {
-  position: relative;
-}
-
-[core-fit] {
-  position: absolute;
-  top: 0;
-  left: 0;
-  height: 100%;
-  width: 100%;
-}
-
-body[core-fit] {
-  margin: 0;
-}
-
-[core-flex] {
-  -webkit-box-flex: 1;
-  -ms-flex: 1;
-  -moz-flex: 1;
-  -webkit-flex: 1;
-  flex: 1;
-}
-
-[core-flex=1] {
-  -webkit-box-flex: 1;
-  -ms-flex: 1;
-  -moz-flex: 1;
-  -webkit-flex: 1;
-  flex: 1;
-}
-
-[core-flex=2] {
-  -webkit-box-flex: 2;
-  -ms-flex: 2;
-  -moz-flex: 2;
-  -webkit-flex: 2;
-  flex: 2;
-}
-
-[core-flex=3] {
-  -webkit-box-flex: 3;
-  -ms-flex: 3;
-  -moz-flex: 3;
-  -webkit-flex: 3;
-  flex: 3;
-}
-
-[core-flex=4] {
-  -webkit-box-flex: 4;
-  -ms-flex: 4;
-  -moz-flex: 4;
-  -webkit-flex: 4;
-  flex: 4;
-}
-
-[core-flex=5] {
-  -webkit-box-flex: 5;
-  -ms-flex: 5;
-  -moz-flex: 5;
-  -webkit-flex: 5;
-  flex: 5;
-}
-
-/* distributed elements */
-::content > [core-flex] {
-  -webkit-box-flex: 1;
-  -ms-flex: 1;
-  -moz-flex: 1;
-  -webkit-flex: 1;
-  flex: 1;
-}
-
-::content > [core-flex=1] {
-  -webkit-box-flex: 1;
-  -ms-flex: 1;
-  -moz-flex: 1;
-  -webkit-flex: 1;
-  flex: 1;
-}
-
-::content > [core-flex=2] {
-  -webkit-box-flex: 2;
-  -ms-flex: 2;
-  -moz-flex: 2;
-  -webkit-flex: 2;
-  flex: 2;
-}
-
-::content > [core-flex=3] {
-  -webkit-box-flex: 3;
-  -ms-flex: 3;
-  -moz-flex: 3;
-  -webkit-flex: 3;
-  flex: 3;
-}
-
-::content > [core-flex=4] {
-  -webkit-box-flex: 4;
-  -ms-flex: 4;
-  -moz-flex: 4;
-  -webkit-flex: 4;
-  flex: 4;
-}
-
-::content > [core-flex=5] {
-  -webkit-box-flex: 5;
-  -ms-flex: 5;
-  -moz-flex: 5;
-  -webkit-flex: 5;
-  flex: 5;
-}
-
-/* alignment in main axis */
-[justify=start] {
-  -webkit-box-pack: start;
-  -ms-flex-pack: start;
-  -moz-justify-content: flex-start;
-  -webkit-justify-content: flex-start;
-  justify-content: flex-start;
-}
-
-[core-justify=center] {
-  -webkit-box-pack: center;
-  -ms-flex-pack: center;
-  -moz-justify-content: center;
-  -webkit-justify-content: center;
-  justify-content: center;
-}
-
-[core-justify=end] {
-  -webkit-box-pack: end;
-  -ms-flex-pack: end;
-  -moz-justify-content: flex-end;
-  -webkit-justify-content: flex-end;
-  justify-content: flex-end;
-}
-
-[core-justify=between] {
-  -webkit-box-pack: justify;
-  -ms-flex-pack: justify;
-  -moz-justify-content: space-between;
-  -webkit-justify-content: space-between;
-  justify-content: space-between;
-}
-
-/* alignment in cross axis */
-[core-align=start] {
-  -webkit-box-align: start;
-  -ms-flex-align: start;
-  -moz-align-items: flex-start;
-  -webkit-align-items: flex-start;
-  align-items: flex-start;
-}
-
-[core-align=center] {
-  -webkit-box-align: center;
-  -ms-flex-align: center;
-  -moz-align-items: center;
-  -webkit-align-items: center;
-  align-items: center;
-}
-
-[core-align=end] {
-  -webkit-box-align: end;
-  -ms-flex-align: end;
-  -moz-align-items: flex-end;
-  -webkit-align-items: flex-end;
-  align-items: flex-end;
-}
-</style>
-  <style no-shim="">/*
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-*/
-
-:host {
-  display: -webkit-box !important;
-  display: -ms-flexbox !important;
-  display: -moz-flex !important;
-  display: -webkit-flex !important;
-  display: flex !important;
-}
-  
-:host([core-flow=h]) {
-  -webkit-box-orient: horizontal;
-  -ms-flex-direction: row;
-  -moz-flex-direction: row;
-  -webkit-flex-direction: row;
-  flex-direction: row;
-}
-  
-:host([core-flow=v]) {
-  -webkit-box-orient: vertical;
-  -ms-flex-direction: column;
-  -moz-flex-direction: column;
-  -webkit-flex-direction: column;
-  flex-direction: column;
-}
-
-:host([core-flow=h][core-reverse]) {
-  -webkit-box-direction: reverse;
-  -ms-flex-direction: row-reverse;
-  -moz-flex-direction: row-reverse;
-  -webkit-flex-direction: row-reverse;
-  flex-direction: row-reverse;
-}
-  
-:host([core-flow=v][core-reverse]) {
-  -webkit-box-direction: reverse;
-  -ms-flex-direction: column-reverse;
-  -moz-flex-direction: column-reverse;
-  -webkit-flex-direction: column-reverse;
-  flex-direction: column-reverse;
-}
-
-/* alignment in main axis */
-:host([core-justify=start]) {
-  -webkit-box-pack: start;
-  -ms-flex-pack: start;
-  -moz-justify-content: flex-start;
-  -webkit-justify-content: flex-start;
-  justify-content: flex-start;
-}
-
-:host([core-justify=center]) {
-  -webkit-box-pack: center;
-  -ms-flex-pack: center;
-  -moz-justify-content: center;
-  -webkit-justify-content: center;
-  justify-content: center;
-}
-
-:host([core-justify=end]) {
-  -webkit-box-pack: end;
-  -ms-flex-pack: end;
-  -moz-justify-content: flex-end;
-  -webkit-justify-content: flex-end;
-  justify-content: flex-end;
-}
-
-:host([core-justify=between]) {
-  -webkit-box-pack: justify;
-  -ms-flex-pack: justify;
-  -moz-justify-content: space-between;
-  -webkit-justify-content: space-between;
-  justify-content: space-between;
-}
-
-/* alignment in cross axis */
-:host([core-align=start]) {
-  -webkit-box-align: start;
-  -ms-flex-align: start;
-  -moz-align-items: flex-start;
-  -webkit-align-items: flex-start;
-  align-items: flex-start;
-}
-
-:host([core-align=center]) {
-  -webkit-box-align: center;
-  -ms-flex-align: center;
-  -moz-align-items: center;
-  -webkit-align-items: center;
-  align-items: center;
-}
-  
-:host([core-align=end]) {
-  -webkit-box-align: end;
-  -ms-flex-align: end;
-  -moz-align-items: flex-end;
-  -webkit-align-items: flex-end;
-  align-items: flex-end;
-}
-</style>
-
-</template>
-<script>
-
-  Polymer('core-layout', {
-    /**
-      * If true, the host element of the core-layout element becomes a 
-      * flexbox. Apply additional layout classes to the host element to customize
-      * its styling.
-      * 
-      * @attribute host
-      * @type boolean
-      * @default false
-      */
-
-    /**
-      * Controls how the element lays out or flows. Set to `h` for a 
-      * horizontal flow or `v` for a vertical flow. 
-      *
-      * @attribute flow
-      * @type string h|v
-      * @default ''
-      */
-    flow: '',
-
-    /**
-      * Controls how the items are aligned in the flow direction. For 
-      * example for a flow of `h`, this controls how each item is aligned
-      * horizontally.
-      *
-      * @attribute justify
-      * @type string start|center|end|between
-      * @default ''
-      */
-    justify: '',
-
-    /**
-      * Controls how the items are aligned in cross-flow direction. For 
-      * example for a flow of `h`, this controls how each item is aligned
-      * vertically.
-      *
-      * @attribute align
-      * @type string start|center|end
-      * @default ''
-      */
-    align: '',
-
-    /**
-      * Controls whether or not the items layout in reverse order.
-      *
-      * @attribute reverse
-      * @type boolean
-      * @default false
-      */
-    reverse: false,
-
-    isContainer: false,
-
-    layoutPrefix: 'core-',
-
-    // NOTE: include template so that styles are loaded, but remove
-    // so that we can decide dynamically what part to include
-    registerCallback: function(polymerElement) {
-      var template = polymerElement.querySelector('template');
-      this.styles = template.content.querySelectorAll('style').array();
-      this.styles.forEach(function(s) {
-        s.removeAttribute('no-shim');
-      })
-    },
-
-    fetchTemplate: function() {
-      return null;
-    },
-
-    attached: function() {
-      this.installScopeStyle(this.styles[0]);
-      if (this.children.length) {
-        this.isContainer = true;
-      }
-      var container = this.isContainer ? this : this.parentNode;  
-      // detect if laying out a shadowRoot host.
-      var forHost = container instanceof ShadowRoot;
-      if (forHost) {
-        this.installScopeStyle(this.styles[1], 'host');
-        container = container.host || document.body;
-      }
-      this.layoutContainer = container;
-    },
-
-    detached: function() {
-      this.layoutContainer = null;
-    },
-
-    layoutContainerChanged: function(old) {
-      this.style.display = this.layoutContainer === this ? null : 'none';
-      this.flowChanged();
-      this.alignChanged();
-      this.justifyChanged();
-    },
-
-    setLayoutAttribute: function(name, value) {
-      if (this.layoutContainer && name) {
-        if (value) {
-          this.layoutContainer.setAttribute(this.layoutPrefix + name, value);
-        } else {
-          this.layoutContainer.removeAttribute(name);
-        }
-      }
-    },
-
-    flowChanged: function() {
-      this.setLayoutAttribute('flow', this.flow || 'h');
-    },
-
-    alignChanged: function() {
-      this.setLayoutAttribute('align', this.align);
-    },
-
-    justifyChanged: function() {
-      this.setLayoutAttribute('justify', this.justify);
-    }
-
-  });
-
-</script>
-</polymer-element>
-
-
-<!--
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE
-The complete set of authors may be found at http://polymer.github.io/AUTHORS
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS
--->
-
-<!--
-`core-icon-button` is an icon with button behaviors.
-
-    <core-icon-button src="star.png"></core-icon-button>
-
-`core-icon-button` includes a default icon set.  Use `icon` to specify 
-which icon from the icon set to use.
-
-    <core-icon-button icon="menu"></core-icon-button>
-
-See <a href="core-iconset.html">core-iconset</a> for more information about 
-how to use a custom icon set.
-
-@group Polymer Core Elements
-@element core-icon-button
-@homepage github.io
--->
-
-<!--
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
--->
-<!--
-
-The `core-icon` element displays an icon using CSS background image. By default an icon renders as 24px square.
-
-Example using src:
-
-    <core-icon src="star.png"></core-icon>
-
-Example setting size to 32px x 32px:
-
-    <core-icon src="big_star.png" size="32"></core-icon>
-
-Example using icon from default iconset:
-
-    <core-icon icon="menu"></core-icon>
-
-Example using icon `cherry` from custom iconset `fruit`:
-
-    <core-icon icon="fruit:cherry"></core-icon>
-
-See <a href="#core-iconset">core-iconset</a> for more information about 
-how to use a custom iconset.
-
-The default set of includes these icons:
-
-<div theme="core-light-theme">
-  <core-icon icon="drawer"></core-icon> drawer,
-  <core-icon icon="menu"></core-icon> menu,
-  <core-icon icon="search"></core-icon> search,
-  <core-icon icon="dropdown"></core-icon> dropdown,
-  <core-icon icon="close"></core-icon> close,
-  <core-icon icon="add"></core-icon> add,
-  <core-icon icon="trash"></core-icon> trash,
-  <core-icon icon="refresh"></core-icon> refresh,
-  <core-icon icon="settings"></core-icon> settings,
-  <core-icon icon="dialoga"></core-icon> dialoga,
-  <core-icon icon="left"></core-icon> left,
-  <core-icon icon="right"></core-icon> right,
-  <core-icon icon="down"></core-icon> down,
-  <core-icon icon="up"></core-icon> up,
-  <core-icon icon="grid"></core-icon> grid,
-  <core-icon icon="contact"></core-icon> contact,
-  <core-icon icon="account"></core-icon> account,
-  <core-icon icon="plus"></core-icon> plus,
-  <core-icon icon="time"></core-icon> time,
-  <core-icon icon="marker"></core-icon> marker,
-  <core-icon icon="briefcase"></core-icon> briefcase,
-  <core-icon icon="array"></core-icon> array,
-  <core-icon icon="columns"></core-icon> columns,
-  <core-icon icon="list"></core-icon> list,
-  <core-icon icon="modules"></core-icon> modules,
-  <core-icon icon="quilt"></core-icon> quilt,
-  <core-icon icon="stream"></core-icon> stream,
-  <core-icon icon="maximize"></core-icon> maximize,
-  <core-icon icon="shrink"></core-icon> shrink,
-  <core-icon icon="sort"></core-icon> sort,
-  <core-icon icon="shortcut"></core-icon> shortcut,
-  <core-icon icon="dialog"></core-icon> dialog,
-  <core-icon icon="twitter"></core-icon> twitter,
-  <core-icon icon="facebook"></core-icon> facebook,
-  <core-icon icon="favorite"></core-icon> favorite,
-  <core-icon icon="gplus"></core-icon> gplus,
-  <core-icon icon="filter"></core-icon> filter,
-  <core-icon icon="tag"></core-icon> tag,
-  <core-icon icon="plusone"></core-icon> plusone,
-  <core-icon icon="dots"></core-icon> dots,
-</div>
-
-@group Polymer Core Elements
-@element core-icon
-@homepage github.io
--->
-
-<!--
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
--->
-
-<!--
-@group Polymer Core Elements
-
-The `core-theme-aware` element is a base element which can be 
-extended to create elements that can support theming. This element applies
-no styling itself; instead it allows the author to create styles that 
-apply known themes.
-
-The user of a theme-aware element can set a `theme` attribute anywhere 
-in the dom tree containing the element, ShadowDOM inclusive. The theme-aware
-element simply ensures that the element has the appropriate theme class. This
-theme class corresponds to the theme attribute.
-
-This means an author can create a set of elements that support a particular
-theme, and the user of that set can, for example, set a theme attribute
-on the body element to apply that theme inside the body element. The 
-`core-theme-aware` element also supports nested theming. For example,
-the body element might be given theme="standard" but a particuarly subtree
-could be given a theme="different".
-
-`core-theme-aware` uses the [Polymer.ThemeAware](#Polymer.ThemeAware) mixin.
-
-Example:
-
-    <body theme="pretty">
-
-      <core-theme-aware> 
-        auto-styled with class="pretty" as a result of the containing theme
-      <core-theme-aware>
-
-      <section theme="different">
-
-        <core-theme-aware> 
-          auto-styled with class="different" as a result of the containing theme
-        <core-theme-aware>
-
-      </section>
-
-    </body>
-
-@class core-theme-aware
-@status beta
-@homepage github.io
-
--->
-
-<!--
- // NOTE: Polymer.ThemeAware methods separately documented so they can be part
- // of core-theme-aware.
- /**
-   * When no theme is specified, the value `defaultTheme` will be applied
-   * as the theme class.
-   * This is not typically intended for a user to set but is 
-   * useful in an element that extends `core-theme-aware`.
-   * 
-   * @attribute defaultTheme
-   * @type string
-   * @default ''
-   */
-
-  /**
-   * The `activeTheme` property stores the current theme. When the activeTheme
-   * changes, the element's theme class is updated. An element can 
-   * implement the `activeThemeChanged` method to do processing when the
-   * theme changes.
-   *
-   * This is not typically intended for a user to set but is 
-   * useful in an element that extends `core-theme-aware`.
-   * 
-   * @attribute activeTheme
-   * @type string
-   * @default ''
-   */
-
-  /**
-   * The theme set by the user of the theme-aware element. The `theme`
-   * property will only be set if the user has specifically given the
-   * theme-aware element a theme attribute.
-   *
-   * @attribute theme
-   * @type string
-   * @default ''
-   */
--->
-
-
-<polymer-element name="core-theme-aware" attributes="theme" assetpath="../core-theme-aware/">
-
-  <script>
-    /**
-     * `Polymer.ThemeAware` is a helper class that can be used to mixin basic
-     * theme-aware capability to an element which cannot extend from 
-     * `core-theme-aware` because it extends from another element.
-     * The `Platform.mixin` method can be used to mixin theme aware capability
-     * into an element's prototype. Here's an example:
-     * 
-     *     Polymer('my-element', Platform.mixin({
-     *
-     *       // my-element's properties and methods
-     *       foo: 'foo',
-     *
-     *       // be sure to call the validateTheme method in the attached method
-     *       // to initialize the theme.
-     *       attached: function() {
-     *         this.validateTheme();
-     *       }
-     *
-     *     }, Polymer.ThemeAware));
-     *
-     * @class Polymer.ThemeAware
-     */
-    Polymer.ThemeAware = {
-
-      /**
-       * When no theme is specified, the value `defaultTheme` will be applied
-       * as the theme class.
-       * This is not typically intended for a user to set but is 
-       * useful in an element that extends `core-theme-aware`.
-       * 
-       * @attribute defaultTheme
-       * @type string
-       * @default ''
-       */
-      defaultTheme: '',
-
-      // TODO(sorvell): activeTheme exists so that we do not always serialize
-      // the theme property. This could be addressed instead via the serialize
-      // block (tbd) like this: serialize: {theme: false}. One issue with this
-      // approach, however, is that if Platform.mixin is used to supply 
-      // Polymer.ThemeAware, it will overwrite the existing serialize block.
-      // Perhaps Platform.mixin should also mixin sub-objects?
-      
-      /**
-       * The `activeTheme` property stores the current theme. When the activeTheme
-       * changes, the element's theme class is updated. An element can 
-       * implement the `activeThemeChanged` method to do processing when the
-       * theme changes.
-       *
-       * This is not typically intended for a user to set but is 
-       * useful in an element that extends `core-theme-aware`.
-       * 
-       * @attribute activeTheme
-       * @type string
-       * @default ''
-       */
-      activeTheme: '',
-
-      /**
-       * The theme set by the user of the theme-aware element. The `theme`
-       * property will only be set if the user has specifically given the
-       * theme-aware element a theme attribute.
-       *
-       * @attribute theme
-       * @type string
-       * @default ''
-       */
-      theme: '',
-
-      /**
-       * 
-       *
-       * @method validateTheme
-       */
-      validateTheme: function() {
-        var theme = this.theme;
-        var defaultTheme = this.defaultTheme;
-        if (!theme) {
-          var p = this;
-          while (p && !theme) {
-            theme = p.getAttribute && p.getAttribute('theme');
-            defaultTheme = defaultTheme || p.defaultTheme;
-            p = p.parentNode || p.host;
-          }
-        }
-        this.activeTheme = this.theme || theme || defaultTheme;
-      },
-
-      themeChanged: function() {
-        this.activeTheme = this.theme;
-      },
-
-      activeThemeChanged: function(old) {
-        this.classList.switch(old, this.activeTheme);
-      }
-      
-    };
-
-    Polymer('core-theme-aware', Platform.mixin({
-
-      attached: function() {
-        this.validateTheme();
-      }
-
-    }, Polymer.ThemeAware));
-
-  </script>
-
-</polymer-element>
-
-<!--
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
--->
-
-<!--
-/**
- * @group Polymer Core Elements
- *
- * The `core-iconset` element allows users to define their own icon sets. 
- * The `src` property specifies the url of the icon image. Multiple icons may
- * be included in this image and they may be organized into rows.
- * The `icons` property is a space separated list of names corresponding to the
- * icons. The names must be ordered as the icons are ordered in the icon image.
- * Icons are expected to be square and are the size specified by the `iconSize`
- * property. The `width` property corresponds to the width of the icon image 
- * and must be specified if icons are arranged into multiple rows in the image.
- *
- * All `core-iconset` elements are available for use by other `core-iconset`
- * elements via a database keyed by id. Typically, an element author that wants
- * to support a set of custom icons uses a `core-iconset` to retrieve 
- * and use another, user-defined iconset.
- *
- * Example:
- *
- *     <core-iconset id="my-icons" src="my-icons.png" width="96" iconSize="24"
- *         icons="location place starta stopb bus car train walk">
- *     </core-iconset>
- *
- * This will automatically register the icon set "my-icons" to the iconset
- * database.  To use these icons from within another element, make a 
- * `core-iconset` element and call the `byId` method to retrieve a
- * given iconset. To apply a particular icon to an element, use the 
- * `applyIcon` method. For example:
- *
- *     iconset.applyIcon(iconNode, 'car');
- *
- * Themed icon sets are also supported. The `core-iconset` can contain child
- * `property` elements that specify a theme with an offsetX and offsetY of the
- * theme within the icon resource. For example.
- *
- *     <core-iconset id="my-icons" src="my-icons.png" width="96" iconSize="24"
- *         icons="location place starta stopb bus car train walk">
- *       <property theme="special" offsetX="256" offsetY="24"></property>
- *     </core-iconset>
- *
- * Then a themed icon can be applied like this:
- *
- *     iconset.applyIcon(iconNode, 'car', 'special');
- *
- * @element core-iconset
- * @homepage github.io
- */
--->
-
-<!--
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
--->
-
-<!--
-`core-meta` provides a method of constructing a self-organizing database.
-It is useful to collate element meta-data for things like catalogs and for 
-designer.
-
-Example, an element folder has a `metadata.html` file in it, that contains a 
-`core-meta`, something like this:
-
-    <core-meta id="my-element" label="My Element">
-      <property name="color" value="blue"></property>
-    </core-meta>
-
-An application can import as many of these files as it wants, and then use 
-`core-meta` again to access the collected data.
-
-    <script>
-      var meta = document.createElement('core-meta');
-      console.log(meta.list); // dump a list of all meta-data elements that have been created
-    </script>
-
-Use `byId(id)` to retrive a specific core-meta.
-
-    <script>
-      var meta = document.createElement('core-meta');
-      console.log(meta.byId('my-element'));
-    </script>
-
-By default all meta-data are stored in a single databse.  If your meta-data 
-have different types and want them to be stored separately, use `type` to 
-differentiate them.
-
-Example:
-
-    <core-meta id="x-foo" type="xElt"></core-meta>
-    <core-meta id="x-bar" type="xElt"></core-meta>
-    <core-meta id="y-bar" type="yElt"></core-meta>
-
-    <script>
-      var meta = document.createElement('core-meta');
-      meta.type = 'xElt';
-      console.log(meta.list);
-    </script>
-
-@group Polymer Core Elements
-@element core-meta
-@homepage github.io
--->
-
-
-
-<polymer-element name="core-meta" attributes="list label type" assetpath="../core-meta/">
-<script>
-
-  (function() {
-    
-    var SKIP_ID = 'meta';
-    var metaData = {}, metaArray = {};
-
-    Polymer('core-meta', {
-      
-      /**
-       * The type of meta-data.  All meta-data with the same type with be
-       * stored together.
-       * 
-       * @attribute type
-       * @type string
-       * @default 'default'
-       */
-      type: 'default',
-      
-      alwaysPrepare: true,
-      
-      ready: function() {
-        this.register(this.id);
-      },
-      
-      get metaArray() {
-        var t = this.type;
-        if (!metaArray[t]) {
-          metaArray[t] = [];
-        }
-        return metaArray[t];
-      },
-      
-      get metaData() {
-        var t = this.type;
-        if (!metaData[t]) {
-          metaData[t] = {};
-        }
-        return metaData[t];
-      },
-      
-      register: function(id, old) {
-        if (id && id !== SKIP_ID) {
-          this.unregister(this, old);
-          this.metaData[id] = this;
-          this.metaArray.push(this);
-        }
-      },
-      
-      unregister: function(meta, id) {
-        delete this.metaData[id || meta.id];
-        var i = this.metaArray.indexOf(meta);
-        if (i >= 0) {
-          this.metaArray.splice(i, 1);
-        }
-      },
-      
-      /**
-       * Returns a list of all meta-data elements with the same type.
-       * 
-       * @attribute list
-       * @type array
-       * @default []
-       */
-      get list() {
-        return this.metaArray;
-      },
-      
-      /**
-       * Retrieves meta-data by ID.
-       *
-       * @method byId
-       * @param {String} id The ID of the meta-data to be returned.
-       * @returns Returns meta-data.
-       */
-      byId: function(id) {
-        return this.metaData[id];
-      }
-      
-    });
-    
-  })();
-  
-</script>
-</polymer-element>
-
-
-<polymer-element name="core-iconset" extends="core-meta" attributes="src width icons iconSize" assetpath="../core-iconset/">
-  
-  <script>
-  
-    Polymer('core-iconset', {
-  
-      /**
-       * The URL of the iconset image.
-       *
-       * @attribute src
-       * @type string
-       * @default ''
-       */
-      src: '',
-
-      /**
-       * The width of the iconset image. This must only be specified if the
-       * icons are arranged into separate rows inside the image.
-       *
-       * @attribute width
-       * @type string
-       * @default ''
-       */
-      width: 0,
-
-      /**
-       * A space separated list of names corresponding to icons in the iconset
-       * image file. This list must be ordered the same as the icon images
-       * in the image file.
-       *
-       * @attribute icons
-       * @type string
-       * @default ''
-       */
-      icons: '',
-
-      /**
-       * The size of an individual icon. Note that icons must be square.
-       *
-       * @attribute iconSize
-       * @type number
-       * @default 24
-       */
-      iconSize: 24,
-
-      /**
-       * The horizontal offset of the icon images in the inconset src image.
-       * This is typically used if the image resource contains additional images
-       * beside those intended for the iconset.
-       *
-       * @attribute offsetX
-       * @type number
-       * @default 0
-       */
-      offsetX: 0,
-      /**
-       * The vertical offset of the icon images in the inconset src image.
-       * This is typically used if the image resource contains additional images
-       * beside those intended for the iconset.
-       *
-       * @attribute offsetY
-       * @type number
-       * @default 0
-       */
-      offsetY: 0,
-      type: 'iconset',
-
-      created: function() {
-        this.iconMap = {};
-        this.iconNames = [];
-        this.themes = {};
-      },
-  
-      ready: function() {
-        // TODO(sorvell): ensure iconset's src is always relative to the main
-        // document
-        if (this.src && (this.ownerDocument !== document)) {
-          this.src = this.resolvePath(this.src, this.ownerDocument.baseURI);
-        }
-        this.super();
-        this.updateThemes();
-      },
-
-      iconsChanged: function() {
-        var ox = this.offsetX;
-        var oy = this.offsetY;
-        this.icons && this.icons.split(/\s+/g).forEach(function(name, i) {
-          this.iconNames.push(name);
-          this.iconMap[name] = {
-            offsetX: ox,
-            offsetY: oy
-          }
-          if (ox + this.iconSize < this.width) {
-            ox += this.iconSize;
-          } else {
-            ox = this.offsetX;
-            oy += this.iconSize;
-          }
-        }, this);
-      },
-
-      updateThemes: function() {
-        var ts = this.querySelectorAll('property[theme]');
-        ts && ts.array().forEach(function(t) {
-          this.themes[t.getAttribute('theme')] = {
-            offsetX: parseInt(t.getAttribute('offsetX')) || 0,
-            offsetY: parseInt(t.getAttribute('offsetY')) || 0
-          };
-        }, this);
-      },
-
-      // TODO(ffu): support retrived by index e.g. getOffset(10);
-      /**
-       * Returns an object containing `offsetX` and `offsetY` properties which
-       * specify the pixel locaion in the iconset's src file for the given
-       * `icon` and `theme`. It's uncommon to call this method. It is useful,
-       * for example, to manually position a css backgroundImage to the proper
-       * offset. It's more common to use the `applyIcon` method.
-       *
-       * @method getOffset
-       * @param {String|Number} icon The name of the icon or the index of the
-       * icon within in the icon image.
-       * @param {String} theme The name of the theme.
-       * @returns {Object} An object specifying the offset of the given icon 
-       * within the icon resource file; `offsetX` is the horizontal offset and
-       * `offsetY` is the vertical offset. Both values are in pixel units.
-       */
-      getOffset: function(icon, theme) {
-        var i = this.iconMap[icon];
-        if (!i) {
-          var n = this.iconNames[Number(icon)];
-          i = this.iconMap[n];
-        }
-        var t = this.themes[theme];
-        if (i && t) {
-          return {
-            offsetX: i.offsetX + t.offsetX,
-            offsetY: i.offsetY + t.offsetY
-          }
-        }
-        return i;
-      },
-
-      /**
-       * Applies an icon to the given element as a css background image. This
-       * method does not size the element, and it's often necessary to set 
-       * the element's height and width so that the background image is visible.
-       *
-       * @method applyIcon
-       * @param {Element} element The element to which the background is
-       * applied.
-       * @param {String|Number} icon The name or index of the icon to apply.
-       * @param {String} theme (optional) The name of the theme for the icon.
-       * @param {Number} scale (optional, defaults to 1) A scaling factor 
-       * with which the icon can be magnified.
-       */
-      applyIcon: function(element, icon, theme, scale) {
-         var offset = this.getOffset(icon, theme);
-         scale = scale || 1;
-         if (element && offset) {
-           element.style.backgroundImage = 'url(' + this.src + ')';
-           element.style.backgroundPosition = (-offset.offsetX * scale + 'px') + 
-              ' ' + (-offset.offsetY * scale + 'px');
-           element.style.backgroundSize = scale === 1 ? 'auto' :
-              this.width * scale + 'px';
-         }
-      }
-
-    });
-
-  </script>
-
-</polymer-element>
-
-<!--
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
--->
-
-<core-iconset id="core-icons" src="../core-action-icons/action-icons.png" width="24" iconsize="24" icons="drawer menu search dropdown close add trash refresh settings dialoga 
-           left right down up grid contact account plus time marker 
-           briefcase array columns list modules quilt stream maximize shrink sort 
-           shortcut dialog twitter facebook favorite gplus filter tag plusone dots">
-
-  <property theme="core-light-theme" offsetx="24"></property>
-  <property theme="core-dark-theme" offsetx="72"></property>
-</core-iconset>
-
-
-<polymer-element name="core-icon" extends="core-theme-aware" attributes="src size icon" assetpath="../core-icon/">
-
-  <template>
-
-    <style>/* Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt */
-
-:host {
-  display: inline-block;
-  vertical-align: middle;
-  cursor: pointer;
-  background-repeat: no-repeat;
-}
-</style>
-    <core-iconset id="meta"></core-iconset>
-    <content></content>
-
-  </template>
-
-  <script>
-
-    Polymer('core-icon', {
-
-      /**
-       * The URL of an image for the icon. If the src property is specified,
-       * the icon property should not be.
-       *
-       * @attribute src
-       * @type string
-       * @default ''
-       */
-      src: '',
-
-      /**
-       * Specifies the size of the icon in pixel units.
-       *
-       * @attribute size
-       * @type string
-       * @default 24
-       */
-      size: 24,
-
-      /**
-       * Specifies the icon name or index in the set of icons available in
-       * the icon's icon set. If the icon property is specified,
-       * the src property should not be.
-       *
-       * @attribute icon
-       * @type string
-       * @default ''
-       */
-      icon: '',
-
-      defaultIconset: 'core-icons',
-
-      observe: {
-        icon: 'updateIcon',
-        activeTheme: 'updateIcon'
-      },
-
-      ready: function() {
-        this.sizeChanged();
-      },
-
-      sizeChanged: function() {
-        this.style.width = this.style.height = this.size + 'px';
-      },
-
-      srcChanged: function() {
-        this.style.backgroundImage = 'url(' + this.src + ')';
-        this.style.backgroundPosition = 'center';
-        this.style.backgroundSize = this.size + 'px ' + this.size + 'px';
-      },
-
-      getIconset: function(name) {
-        return this.$.meta.byId(name || this.defaultIconset);
-      },
-
-      updateIcon: function() {
-        if (!(this.icon && typeof this.icon === 'string')) {
-          return;
-        }
-        var parts = this.icon.split(':');
-        var icon = parts.pop();
-        var set = this.getIconset(parts.pop());
-        if (set && icon) {
-          var scale = this.size / set.iconSize;
-          set.applyIcon(this, icon, this.activeTheme, scale);
-        }
-      }
-
-    });
-
-  </script>
-
-</polymer-element>
-
-
-<polymer-element name="core-icon-button" extends="core-theme-aware" attributes="src icon active" assetpath="../core-icon-button/">
-
-  <template>
-
-    <style>/*
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE
-The complete set of authors may be found at http://polymer.github.io/AUTHORS
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS
-*/
-
-:host {
-  display: inline-block;
-  box-sizing: border-box;
-  -moz-box-sizing: border-box;
-  width: 38px;
-  height: 38px;
-  background-image: none;
-  border-radius: 2px;
-  padding: 7px;
-  margin: 2px;
-  vertical-align: middle;
-  cursor: pointer;
-}
-
-:host(.outline) {
-  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.1);
-}
-
-:host(:hover) {
-  box-shadow: 0 1px 0 0 rgba(0, 0, 0, 0.12), 0 0 0 1px rgba(0, 0, 0, 0.1);
-}
-
-:host(.selected) {
-  background-color: rgba(0, 0, 0, 0.05);
-  box-shadow: inset 0 1px 0 0 rgba(0, 0, 0, 0.05), 0 0 0 1px rgba(0, 0, 0, 0.12);
-}
-
-:host(:active, .selected:active) {
-  background-color: rgba(0, 0, 0, 0.05);
-  box-shadow: inset 0 1px 0 0 rgba(0, 0, 0, 0.1), 0 0 0 1px rgba(0, 0, 0, 0.12);
-}
-
-:host(.core-dark-theme.outline) {
-  background-color: rgba(200, 200, 200, 0.05);
-  box-shadow: 0 0 0 1px rgba(200, 200, 200, 0.1);
-}
-
-:host(.core-dark-theme:hover) {
-  background-color: rgba(200, 200, 200, 0.05);
-  box-shadow: 0 1px 0 0 rgba(200, 200, 200, 0.12), 0 0 0 1px rgba(200, 200, 200, 0.1);
-}
-
-:host(.core-dark-theme.selected) {
-  background-color: rgba(220, 220, 220, 0.05);
-  box-shadow: inset 0 1px 0 0 rgba(200, 200, 200, 0.05), 0 0 0 1px rgba(200, 200, 200, 0.12);
-}
-
-:host(.core-dark-theme:active, .core-dark-theme.selected:active) {
-  background-color: rgba(200, 200, 200, 0.05);
-  box-shadow: inset 0 1px 0 0 rgba(200, 200, 200, 0.1), 0 0 0 1px rgba(200, 200, 200, 0.12);
-}
-
-core-icon {
-  display: block;
-  vertical-align: middle;
-}
-</style>
-
-    <core-icon src="{{src}}" icon="{{icon}}"><content></content></core-icon>
-
-  </template>
-
-  <script>
-
-    Polymer('core-icon-button', {
-
-      /**
-       * The URL of an image for the icon.  Should not use `icon` property
-       * if you are using this property.
-       *
-       * @attribute src
-       * @type string
-       * @default ''
-       */
-      src: '',
-
-      /**
-       * If true, border is placed around the button to indicate it's
-       * active state.
-       *
-       * @attribute active
-       * @type boolean
-       * @default false
-       */
-      active: false,
-
-      /**
-       * Specifies the icon name or index in the set of icons available in
-       * the icon set.  Should not use `src` property if you are using this
-       * property.
-       *
-       * @attribute icon
-       * @type string
-       * @default ''
-       */
-      icon: '',
-
-      activeChanged: function() {
-        this.classList.toggle('selected', this.active);
-      }
-
-    });
-
-  </script>
-
-</polymer-element>
-
-<!--
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
--->
-
-<!--
-`core-toolbar` is a horizontal bar containing elements that can be used for
-label, navigation, search and actions.
-
-    <core-toolbar>
-      <core-icon-button icon="menu" on-tap="{{menuAction}}"></core-icon-button>
-      <div core-flex>Title</div>
-      <core-icon-button icon="more" on-tap="{{moreAction}}"></core-icon-button>
-    </core-toolbar>
-
-`core-toolbar` has a standard height, but can be taller by setting `tall`
-class on the `core-toolbar`.
-
-    <core-toolbar class="tall">
-      <core-icon-button icon="menu"></core-icon-button>
-    </core-toolbar>
-    
-Apply `medium-tall` class to make the toolbar medium tall.
-
-    <core-toolbar class="medium-tall">
-      <core-icon-button icon="menu"></core-icon-button>
-    </core-toolbar>
-
-When taller, actions can pin to either the top (default), middle or bottom.
-
-    <core-toolbar class="tall">
-      <core-icon-button class="bottom" icon="menu"></core-icon-button>
-      <div class="middle">Toolbar</div>
-    </core-toolbar>
-
-Apply `seamed` class to remove the drop shadow.
-
-    <core-toolbar class="seamed">
-      <core-icon-button icon="menu"></core-icon-button>
-    </core-toolbar>
-
-@group Polymer Core Elements
-@element core-toolbar
-@homepage github.io
--->
-
-
-
-<polymer-element name="core-toolbar" extends="core-theme-aware" assetpath="../core-toolbar/">
-<template>
-
-  <style>/*
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-*/
-
-:host {
-  /* technical */
-  display: block;
-  position: relative;
-  box-sizing: border-box;
-  -moz-box-sizing: border-box;
-  /* size */
-  height: 64px;
-  /* typography */
-  font-size: 21px;
-  /* border/shadow */
-  box-shadow: 0px 4px 12px 0px rgba(0, 0, 0, 0.35);
-  /* transition */
-  transition: height ease-in 0.18s;
-}
-
-:host(.core-dark-theme) {
-  color: #eee;
-}
-
-:host(.medium-tall) {
-  height: 128px;
-}
-
-:host(.tall) {
-  height: 192px;
-}
-
-:host(.seamed) {
-  box-shadow: none;
-}
-
-.toolbar-tools, .toolbar-tools-middle, .toolbar-tools-bottom {
-  height: 64px;
-  padding: 0 9px;
-}
-
-.toolbar-tools-middle {
-  position: absolute;
-  top: calc(50% - 30px);
-  right: 0;
-  left: 0;
-  pointer-events: none;
-}
-
-.toolbar-tools-bottom {
-  position: absolute;
-  right: 0;
-  bottom: 0;
-  left: 0;
-  pointer-events: none;
-}
-
-/*@polyfill :host > .toolbar-tools-middle > *, :host > .toolbar-tools-bottom > * */
-::content[select=".middle"] > *, ::content[select=".bottom"] > * {
-  pointer-events: visible;
-}
-
-/*@polyfill :host > .toolbar-tools > *, :host > .toolbar-tools-middle > *, :host > .toolbar-tools-bottom > * */
-::content > * {
-  margin: 0px 8px 0 8px;
-}
-
-/*@polyfill :host .indent */
-::content > .indent {
-  margin-left: 60px;
-}
-</style>
-  <style>/*
-Copyright 2013 The Polymer Authors. All rights reserved.
-Use of this source code is governed by a BSD-style
-license that can be found in the LICENSE file.
-*/
-
-[core-flow] {
-  display: -webkit-box !important;
-  display: -ms-flexbox !important;
-  display: -moz-flex !important;
-  display: -webkit-flex !important;
-  display: flex !important;
-}
-
-[core-flow=h] {
-  -webkit-box-orient: horizontal;
-  -ms-flex-direction: row;
-  -moz-flex-direction: row;
-  -webkit-flex-direction: row;
-  flex-direction: row;
-}
-
-[core-flow=h][core-reverse] {
-  -webkit-box-direction: reverse;
-  -ms-flex-direction: row-reverse;
-  -moz-flex-direction: row-reverse;
-  -webkit-flex-direction: row-reverse;
-  flex-direction: row-reverse;
-}
-
-[core-flow=v] {
-  -webkit-box-orient: vertical;
-  -ms-flex-direction: column;
-  -moz-flex-direction: column;
-  -webkit-flex-direction: column;
-  flex-direction: column;
-}
-
-[core-flow=v][core-reverse] {
-  -webkit-box-direction: reverse;
-  -ms-flex-direction: column-reverse;
-  -moz-flex-direction: column-reverse;
-  -webkit-flex-direction: column-reverse;
-  flex-direction: column-reverse;
-}
-
-[core-relative] {
-  position: relative;
-}
-
-[core-fit] {
-  position: absolute;
-  top: 0;
-  left: 0;
-  height: 100%;
-  width: 100%;
-}
-
-body[core-fit] {
-  margin: 0;
-}
-
-[core-flex] {
-  -webkit-box-flex: 1;
-  -ms-flex: 1;
-  -moz-flex: 1;
-  -webkit-flex: 1;
-  flex: 1;
-}
-
-[core-flex=1] {
-  -webkit-box-flex: 1;
-  -ms-flex: 1;
-  -moz-flex: 1;
-  -webkit-flex: 1;
-  flex: 1;
-}
-
-[core-flex=2] {
-  -webkit-box-flex: 2;
-  -ms-flex: 2;
-  -moz-flex: 2;
-  -webkit-flex: 2;
-  flex: 2;
-}
-
-[core-flex=3] {
-  -webkit-box-flex: 3;
-  -ms-flex: 3;
-  -moz-flex: 3;
-  -webkit-flex: 3;
-  flex: 3;
-}
-
-[core-flex=4] {
-  -webkit-box-flex: 4;
-  -ms-flex: 4;
-  -moz-flex: 4;
-  -webkit-flex: 4;
-  flex: 4;
-}
-
-[core-flex=5] {
-  -webkit-box-flex: 5;
-  -ms-flex: 5;
-  -moz-flex: 5;
-  -webkit-flex: 5;
-  flex: 5;
-}
-
-/* distributed elements */
-::content > [core-flex] {
-  -webkit-box-flex: 1;
-  -ms-flex: 1;
-  -moz-flex: 1;
-  -webkit-flex: 1;
-  flex: 1;
-}
-
-::content > [core-flex=1] {
-  -webkit-box-flex: 1;
-  -ms-flex: 1;
-  -moz-flex: 1;
-  -webkit-flex: 1;
-  flex: 1;
-}
-
-::content > [core-flex=2] {
-  -webkit-box-flex: 2;
-  -ms-flex: 2;
-  -moz-flex: 2;
-  -webkit-flex: 2;
-  flex: 2;
-}
-
-::content > [core-flex=3] {
-  -webkit-box-flex: 3;
-  -ms-flex: 3;
-  -moz-flex: 3;
-  -webkit-flex: 3;
-  flex: 3;
-}
-
-::content > [core-flex=4] {
-  -webkit-box-flex: 4;
-  -ms-flex: 4;
-  -moz-flex: 4;
-  -webkit-flex: 4;
-  flex: 4;
-}
-
-::content > [core-flex=5] {
-  -webkit-box-flex: 5;
-  -ms-flex: 5;
-  -moz-flex: 5;
-  -webkit-flex: 5;
-  flex: 5;
-}
-
-/* alignment in main axis */
-[justify=start] {
-  -webkit-box-pack: start;
-  -ms-flex-pack: start;
-  -moz-justify-content: flex-start;
-  -webkit-justify-content: flex-start;
-  justify-content: flex-start;
-}
-
-[core-justify=center] {
-  -webkit-box-pack: center;
-  -ms-flex-pack: center;
-  -moz-justify-content: center;
-  -webkit-justify-content: center;
-  justify-content: center;
-}
-
-[core-justify=end] {
-  -webkit-box-pack: end;
-  -ms-flex-pack: end;
-  -moz-justify-content: flex-end;
-  -webkit-justify-content: flex-end;
-  justify-content: flex-end;
-}
-
-[core-justify=between] {
-  -webkit-box-pack: justify;
-  -ms-flex-pack: justify;
-  -moz-justify-content: space-between;
-  -webkit-justify-content: space-between;
-  justify-content: space-between;
-}
-
-/* alignment in cross axis */
-[core-align=start] {
-  -webkit-box-align: start;
-  -ms-flex-align: start;
-  -moz-align-items: flex-start;
-  -webkit-align-items: flex-start;
-  align-items: flex-start;
-}
-
-[core-align=center] {
-  -webkit-box-align: center;
-  -ms-flex-align: center;
-  -moz-align-items: center;
-  -webkit-align-items: center;
-  align-items: center;
-}
-
-[core-align=end] {
-  -webkit-box-align: end;
-  -ms-flex-align: end;
-  -moz-align-items: flex-end;
-  -webkit-align-items: flex-end;
-  align-items: flex-end;
-}
-</style>
-
-  <div class="toolbar-tools-bottom" core-flow="" core-align="center">
-    <content select=".bottom"></content>
-  </div>
-  
-  <div class="toolbar-tools-middle" core-flow="" core-align="center">
-    <content select=".middle"></content>
-  </div>
-
-  <div class="toolbar-tools" core-flow="" core-align="center">
-    <content></content>
-  </div>
-
-</template>
-<script>
-
-  Polymer('core-toolbar', {
-
-    defaultTheme: 'core-light-theme'
-
-  });
-
-</script>
-</polymer-element>
-
-<!--
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE
-The complete set of authors may be found at http://polymer.github.io/AUTHORS
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS
--->
-
-<!--
-`core-header-panel` contains a header section and a content section. Special
-support is provided for scrolling modes when one uses a core-toolbar or equivalent
-for the header section.
-
-Example:
-
-    <core-header-panel>
-      <core-toolbar>Header</core-toolbar>
-      <div>Content goes here...</div>
-    </core-header-panel>
-
-If you want to use other than `core-toolbar` for the header, add 
-`core-header` class to that element.
-
-Example:
-
-    <core-header-panel>
-      <div class="core-header">Header</div>
-      <div>Content goes here...</div>
-    </core-header-panel>
-
-There are five different modes of header and scrolling behaviors.
-
-`standard`: The header is a step above the panel. The header will consume the 
-panel at the point of entry, preventing it from passing through to the 
-opposite side.
-
-`waterfall`: Similar to standard mode, but header is initially presented as 
-seamed with panel, but then separates to form the step.
-
-`waterfall-tall`: The header is initially taller (`tall` class is added to 
-the header).  As the user scrolls, the header separates (forming an edge)
-while condensing (`tall` class is removed from the header).
-
-`scroll`: The header keeps its seam with the panel, and is pushed off screen.
-
-`cover`: The panel covers the whole `core-header-panel` including the
-header. This allows user to style the panel in such a way that the panel is
-partially covering the header.
- 
-    <core-header-panel mode="cover">
-      <core-appbar class="tall">
-        <core-icon-button icon="menu"></core-icon-button>
-      </core-appbar>
-      <div class="content" style="margin: 60px"></div>
-    </core-header-panel>
-
-@group Polymer Core Elements
-@element core-header-panel
-@homepage github.io
--->
-
-
-
-<polymer-element name="core-header-panel" attributes="mode" assetpath="../core-header-panel/">
-<template>
-
-  <style>/*
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-*/
-
-:host {
-  display: block;
-}
-
-.header-panel-container {
-  position: relative;
-  height: 100%;
-  overflow: auto;
-}
-
-#mainContainer {
-  /* position: relative; */
-  overflow: auto;
-}
-
-:host([mode=scroll]) #mainContainer {
-  overflow: visible;
-}
-
-:host([mode=cover]) #mainContainer {
-  position: absolute;
-  top: 0;
-  right: 0;
-  bottom: 0;
-  left: 0;
-  pointer-events: none;
-}
-
-/* @polyfill :host([mode=cover]) #mainContainer > * */
-:host([mode=cover]) ::content#mainContent > * {
-  pointer-events: visible;
-}
-
-/* @polyfill :host([mode=scroll]) #mainContainer > * */
-:host([mode=scroll]) ::content#mainContent > * {
-  overflow: hidden;
-}</style>
-  <style>/*
-Copyright 2013 The Polymer Authors. All rights reserved.
-Use of this source code is governed by a BSD-style
-license that can be found in the LICENSE file.
-*/
-
-[core-flow] {
-  display: -webkit-box !important;
-  display: -ms-flexbox !important;
-  display: -moz-flex !important;
-  display: -webkit-flex !important;
-  display: flex !important;
-}
-
-[core-flow=h] {
-  -webkit-box-orient: horizontal;
-  -ms-flex-direction: row;
-  -moz-flex-direction: row;
-  -webkit-flex-direction: row;
-  flex-direction: row;
-}
-
-[core-flow=h][core-reverse] {
-  -webkit-box-direction: reverse;
-  -ms-flex-direction: row-reverse;
-  -moz-flex-direction: row-reverse;
-  -webkit-flex-direction: row-reverse;
-  flex-direction: row-reverse;
-}
-
-[core-flow=v] {
-  -webkit-box-orient: vertical;
-  -ms-flex-direction: column;
-  -moz-flex-direction: column;
-  -webkit-flex-direction: column;
-  flex-direction: column;
-}
-
-[core-flow=v][core-reverse] {
-  -webkit-box-direction: reverse;
-  -ms-flex-direction: column-reverse;
-  -moz-flex-direction: column-reverse;
-  -webkit-flex-direction: column-reverse;
-  flex-direction: column-reverse;
-}
-
-[core-relative] {
-  position: relative;
-}
-
-[core-fit] {
-  position: absolute;
-  top: 0;
-  left: 0;
-  height: 100%;
-  width: 100%;
-}
-
-body[core-fit] {
-  margin: 0;
-}
-
-[core-flex] {
-  -webkit-box-flex: 1;
-  -ms-flex: 1;
-  -moz-flex: 1;
-  -webkit-flex: 1;
-  flex: 1;
-}
-
-[core-flex=1] {
-  -webkit-box-flex: 1;
-  -ms-flex: 1;
-  -moz-flex: 1;
-  -webkit-flex: 1;
-  flex: 1;
-}
-
-[core-flex=2] {
-  -webkit-box-flex: 2;
-  -ms-flex: 2;
-  -moz-flex: 2;
-  -webkit-flex: 2;
-  flex: 2;
-}
-
-[core-flex=3] {
-  -webkit-box-flex: 3;
-  -ms-flex: 3;
-  -moz-flex: 3;
-  -webkit-flex: 3;
-  flex: 3;
-}
-
-[core-flex=4] {
-  -webkit-box-flex: 4;
-  -ms-flex: 4;
-  -moz-flex: 4;
-  -webkit-flex: 4;
-  flex: 4;
-}
-
-[core-flex=5] {
-  -webkit-box-flex: 5;
-  -ms-flex: 5;
-  -moz-flex: 5;
-  -webkit-flex: 5;
-  flex: 5;
-}
-
-/* distributed elements */
-::content > [core-flex] {
-  -webkit-box-flex: 1;
-  -ms-flex: 1;
-  -moz-flex: 1;
-  -webkit-flex: 1;
-  flex: 1;
-}
-
-::content > [core-flex=1] {
-  -webkit-box-flex: 1;
-  -ms-flex: 1;
-  -moz-flex: 1;
-  -webkit-flex: 1;
-  flex: 1;
-}
-
-::content > [core-flex=2] {
-  -webkit-box-flex: 2;
-  -ms-flex: 2;
-  -moz-flex: 2;
-  -webkit-flex: 2;
-  flex: 2;
-}
-
-::content > [core-flex=3] {
-  -webkit-box-flex: 3;
-  -ms-flex: 3;
-  -moz-flex: 3;
-  -webkit-flex: 3;
-  flex: 3;
-}
-
-::content > [core-flex=4] {
-  -webkit-box-flex: 4;
-  -ms-flex: 4;
-  -moz-flex: 4;
-  -webkit-flex: 4;
-  flex: 4;
-}
-
-::content > [core-flex=5] {
-  -webkit-box-flex: 5;
-  -ms-flex: 5;
-  -moz-flex: 5;
-  -webkit-flex: 5;
-  flex: 5;
-}
-
-/* alignment in main axis */
-[justify=start] {
-  -webkit-box-pack: start;
-  -ms-flex-pack: start;
-  -moz-justify-content: flex-start;
-  -webkit-justify-content: flex-start;
-  justify-content: flex-start;
-}
-
-[core-justify=center] {
-  -webkit-box-pack: center;
-  -ms-flex-pack: center;
-  -moz-justify-content: center;
-  -webkit-justify-content: center;
-  justify-content: center;
-}
-
-[core-justify=end] {
-  -webkit-box-pack: end;
-  -ms-flex-pack: end;
-  -moz-justify-content: flex-end;
-  -webkit-justify-content: flex-end;
-  justify-content: flex-end;
-}
-
-[core-justify=between] {
-  -webkit-box-pack: justify;
-  -ms-flex-pack: justify;
-  -moz-justify-content: space-between;
-  -webkit-justify-content: space-between;
-  justify-content: space-between;
-}
-
-/* alignment in cross axis */
-[core-align=start] {
-  -webkit-box-align: start;
-  -ms-flex-align: start;
-  -moz-align-items: flex-start;
-  -webkit-align-items: flex-start;
-  align-items: flex-start;
-}
-
-[core-align=center] {
-  -webkit-box-align: center;
-  -ms-flex-align: center;
-  -moz-align-items: center;
-  -webkit-align-items: center;
-  align-items: center;
-}
-
-[core-align=end] {
-  -webkit-box-align: end;
-  -ms-flex-align: end;
-  -moz-align-items: flex-end;
-  -webkit-align-items: flex-end;
-  align-items: flex-end;
-}
-</style>
-  
-  <div class="header-panel-container" core-flow="v" on-scroll="{{scroll}}">
-
-    <content id="headerContent" select="core-toolbar, paper-toolbar, .core-header"></content>
-
-    <div id="mainContainer" core-flex="" on-scroll="{{scroll}}">
-      <content id="mainContent" select="*"></content>
-    </div>
-
-  </div>
-
-</template>
-<script>
-
-  Polymer('core-header-panel', {
-
-    /**
-     * Controls header and scrolling behavior. Options are
-     * `standard`, `waterfall`, `waterfall-tall`, `scroll` and `cover`.
-     * Default is `standard`.
-     *
-     * `standard`: The header is a step above the panel. The header will consume the 
-     * panel at the point of entry, preventing it from passing through to the 
-     * opposite side.
-     *
-     * `waterfall`: Similar to standard mode, but header is initially presented as 
-     * seamed with panel, but then separates to form the step.
-     *
-     * `waterfall-tall`: The header is initially taller (`tall` class is added to 
-     * the header).  As the user scrolls, the header separates (forming an edge)
-     * while condensing (`tall` class is removed from the header).
-     *
-     * `scroll`: The header keeps its seam with the panel, and is pushed off screen.
-     *
-     * `cover`: The panel covers the whole `core-header-panel` including the
-     * header. This allows user to style the panel in such a way that the panel is
-     * partially covering the header.
-     *
-     * @attribute mode
-     * @type string
-     * @default ''
-     */
-    mode: '',
-
-    ready: function() {
-      this.scroll();
-    },
-
-    modeChanged: function() {
-      this.scroll();
-    },
-
-    get header() {
-      return this.$.headerContent.getDistributedNodes()[0];
-    },
-
-    scroll: function() {
-      var seamedMode = {'waterfall': 1, 'waterfall-tall': 1, 'scroll': 1}; 
-      var tallMode = {'waterfall-tall': 1};
-      var atTop = (this.$.mainContainer.scrollTop === 0);
-      var header = this.header;
-      if (header) {
-        if (seamedMode[this.mode]) {
-          header.classList.toggle('seamed', atTop);
-        }
-        if (tallMode[this.mode]) {
-          header.classList.toggle('tall', atTop);
-        }
-      }
-    }
-
-  });
-
-</script>
-</polymer-element>
-
-<!--
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
--->
-
-
-<script>/**
- * marked - a markdown parser
- * Copyright (c) 2011-2014, Christopher Jeffrey. (MIT Licensed)
- * https://github.com/chjj/marked
- */
-
-;(function() {
-
-/**
- * Block-Level Grammar
- */
-
-var block = {
-  newline: /^\n+/,
-  code: /^( {4}[^\n]+\n*)+/,
-  fences: noop,
-  hr: /^( *[-*_]){3,} *(?:\n+|$)/,
-  heading: /^ *(#{1,6}) *([^\n]+?) *#* *(?:\n+|$)/,
-  nptable: noop,
-  lheading: /^([^\n]+)\n *(=|-){2,} *(?:\n+|$)/,
-  blockquote: /^( *>[^\n]+(\n(?!def)[^\n]+)*\n*)+/,
-  list: /^( *)(bull) [\s\S]+?(?:hr|def|\n{2,}(?! )(?!\1bull )\n*|\s*$)/,
-  html: /^ *(?:comment|closed|closing) *(?:\n{2,}|\s*$)/,
-  def: /^ *\[([^\]]+)\]: *<?([^\s>]+)>?(?: +["(]([^\n]+)[")])? *(?:\n+|$)/,
-  table: noop,
-  paragraph: /^((?:[^\n]+\n?(?!hr|heading|lheading|blockquote|tag|def))+)\n*/,
-  text: /^[^\n]+/
-};
-
-block.bullet = /(?:[*+-]|\d+\.)/;
-block.item = /^( *)(bull) [^\n]*(?:\n(?!\1bull )[^\n]*)*/;
-block.item = replace(block.item, 'gm')
-  (/bull/g, block.bullet)
-  ();
-
-block.list = replace(block.list)
-  (/bull/g, block.bullet)
-  ('hr', '\\n+(?=\\1?(?:[-*_] *){3,}(?:\\n+|$))')
-  ('def', '\\n+(?=' + block.def.source + ')')
-  ();
-
-block.blockquote = replace(block.blockquote)
-  ('def', block.def)
-  ();
-
-block._tag = '(?!(?:'
-  + 'a|em|strong|small|s|cite|q|dfn|abbr|data|time|code'
-  + '|var|samp|kbd|sub|sup|i|b|u|mark|ruby|rt|rp|bdi|bdo'
-  + '|span|br|wbr|ins|del|img)\\b)\\w+(?!:/|[^\\w\\s@]*@)\\b';
-
-block.html = replace(block.html)
-  ('comment', /<!--[\s\S]*?-->/)
-  ('closed', /<(tag)[\s\S]+?<\/\1>/)
-  ('closing', /<tag(?:"[^"]*"|'[^']*'|[^'">])*?>/)
-  (/tag/g, block._tag)
-  ();
-
-block.paragraph = replace(block.paragraph)
-  ('hr', block.hr)
-  ('heading', block.heading)
-  ('lheading', block.lheading)
-  ('blockquote', block.blockquote)
-  ('tag', '<' + block._tag)
-  ('def', block.def)
-  ();
-
-/**
- * Normal Block Grammar
- */
-
-block.normal = merge({}, block);
-
-/**
- * GFM Block Grammar
- */
-
-block.gfm = merge({}, block.normal, {
-  fences: /^ *(`{3,}|~{3,}) *(\S+)? *\n([\s\S]+?)\s*\1 *(?:\n+|$)/,
-  paragraph: /^/
-});
-
-block.gfm.paragraph = replace(block.paragraph)
-  ('(?!', '(?!'
-    + block.gfm.fences.source.replace('\\1', '\\2') + '|'
-    + block.list.source.replace('\\1', '\\3') + '|')
-  ();
-
-/**
- * GFM + Tables Block Grammar
- */
-
-block.tables = merge({}, block.gfm, {
-  nptable: /^ *(\S.*\|.*)\n *([-:]+ *\|[-| :]*)\n((?:.*\|.*(?:\n|$))*)\n*/,
-  table: /^ *\|(.+)\n *\|( *[-:]+[-| :]*)\n((?: *\|.*(?:\n|$))*)\n*/
-});
-
-/**
- * Block Lexer
- */
-
-function Lexer(options) {
-  this.tokens = [];
-  this.tokens.links = {};
-  this.options = options || marked.defaults;
-  this.rules = block.normal;
-
-  if (this.options.gfm) {
-    if (this.options.tables) {
-      this.rules = block.tables;
-    } else {
-      this.rules = block.gfm;
-    }
-  }
-}
-
-/**
- * Expose Block Rules
- */
-
-Lexer.rules = block;
-
-/**
- * Static Lex Method
- */
-
-Lexer.lex = function(src, options) {
-  var lexer = new Lexer(options);
-  return lexer.lex(src);
-};
-
-/**
- * Preprocessing
- */
-
-Lexer.prototype.lex = function(src) {
-  src = src
-    .replace(/\r\n|\r/g, '\n')
-    .replace(/\t/g, '    ')
-    .replace(/\u00a0/g, ' ')
-    .replace(/\u2424/g, '\n');
-
-  return this.token(src, true);
-};
-
-/**
- * Lexing
- */
-
-Lexer.prototype.token = function(src, top, bq) {
-  var src = src.replace(/^ +$/gm, '')
-    , next
-    , loose
-    , cap
-    , bull
-    , b
-    , item
-    , space
-    , i
-    , l;
-
-  while (src) {
-    // newline
-    if (cap = this.rules.newline.exec(src)) {
-      src = src.substring(cap[0].length);
-      if (cap[0].length > 1) {
-        this.tokens.push({
-          type: 'space'
-        });
-      }
-    }
-
-    // code
-    if (cap = this.rules.code.exec(src)) {
-      src = src.substring(cap[0].length);
-      cap = cap[0].replace(/^ {4}/gm, '');
-      this.tokens.push({
-        type: 'code',
-        text: !this.options.pedantic
-          ? cap.replace(/\n+$/, '')
-          : cap
-      });
-      continue;
-    }
-
-    // fences (gfm)
-    if (cap = this.rules.fences.exec(src)) {
-      src = src.substring(cap[0].length);
-      this.tokens.push({
-        type: 'code',
-        lang: cap[2],
-        text: cap[3]
-      });
-      continue;
-    }
-
-    // heading
-    if (cap = this.rules.heading.exec(src)) {
-      src = src.substring(cap[0].length);
-      this.tokens.push({
-        type: 'heading',
-        depth: cap[1].length,
-        text: cap[2]
-      });
-      continue;
-    }
-
-    // table no leading pipe (gfm)
-    if (top && (cap = this.rules.nptable.exec(src))) {
-      src = src.substring(cap[0].length);
-
-      item = {
-        type: 'table',
-        header: cap[1].replace(/^ *| *\| *$/g, '').split(/ *\| */),
-        align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
-        cells: cap[3].replace(/\n$/, '').split('\n')
-      };
-
-      for (i = 0; i < item.align.length; i++) {
-        if (/^ *-+: *$/.test(item.align[i])) {
-          item.align[i] = 'right';
-        } else if (/^ *:-+: *$/.test(item.align[i])) {
-          item.align[i] = 'center';
-        } else if (/^ *:-+ *$/.test(item.align[i])) {
-          item.align[i] = 'left';
-        } else {
-          item.align[i] = null;
-        }
-      }
-
-      for (i = 0; i < item.cells.length; i++) {
-        item.cells[i] = item.cells[i].split(/ *\| */);
-      }
-
-      this.tokens.push(item);
-
-      continue;
-    }
-
-    // lheading
-    if (cap = this.rules.lheading.exec(src)) {
-      src = src.substring(cap[0].length);
-      this.tokens.push({
-        type: 'heading',
-        depth: cap[2] === '=' ? 1 : 2,
-        text: cap[1]
-      });
-      continue;
-    }
-
-    // hr
-    if (cap = this.rules.hr.exec(src)) {
-      src = src.substring(cap[0].length);
-      this.tokens.push({
-        type: 'hr'
-      });
-      continue;
-    }
-
-    // blockquote
-    if (cap = this.rules.blockquote.exec(src)) {
-      src = src.substring(cap[0].length);
-
-      this.tokens.push({
-        type: 'blockquote_start'
-      });
-
-      cap = cap[0].replace(/^ *> ?/gm, '');
-
-      // Pass `top` to keep the current
-      // "toplevel" state. This is exactly
-      // how markdown.pl works.
-      this.token(cap, top, true);
-
-      this.tokens.push({
-        type: 'blockquote_end'
-      });
-
-      continue;
-    }
-
-    // list
-    if (cap = this.rules.list.exec(src)) {
-      src = src.substring(cap[0].length);
-      bull = cap[2];
-
-      this.tokens.push({
-        type: 'list_start',
-        ordered: bull.length > 1
-      });
-
-      // Get each top-level item.
-      cap = cap[0].match(this.rules.item);
-
-      next = false;
-      l = cap.length;
-      i = 0;
-
-      for (; i < l; i++) {
-        item = cap[i];
-
-        // Remove the list item's bullet
-        // so it is seen as the next token.
-        space = item.length;
-        item = item.replace(/^ *([*+-]|\d+\.) +/, '');
-
-        // Outdent whatever the
-        // list item contains. Hacky.
-        if (~item.indexOf('\n ')) {
-          space -= item.length;
-          item = !this.options.pedantic
-            ? item.replace(new RegExp('^ {1,' + space + '}', 'gm'), '')
-            : item.replace(/^ {1,4}/gm, '');
-        }
-
-        // Determine whether the next list item belongs here.
-        // Backpedal if it does not belong in this list.
-        if (this.options.smartLists && i !== l - 1) {
-          b = block.bullet.exec(cap[i + 1])[0];
-          if (bull !== b && !(bull.length > 1 && b.length > 1)) {
-            src = cap.slice(i + 1).join('\n') + src;
-            i = l - 1;
-          }
-        }
-
-        // Determine whether item is loose or not.
-        // Use: /(^|\n)(?! )[^\n]+\n\n(?!\s*$)/
-        // for discount behavior.
-        loose = next || /\n\n(?!\s*$)/.test(item);
-        if (i !== l - 1) {
-          next = item.charAt(item.length - 1) === '\n';
-          if (!loose) loose = next;
-        }
-
-        this.tokens.push({
-          type: loose
-            ? 'loose_item_start'
-            : 'list_item_start'
-        });
-
-        // Recurse.
-        this.token(item, false, bq);
-
-        this.tokens.push({
-          type: 'list_item_end'
-        });
-      }
-
-      this.tokens.push({
-        type: 'list_end'
-      });
-
-      continue;
-    }
-
-    // html
-    if (cap = this.rules.html.exec(src)) {
-      src = src.substring(cap[0].length);
-      this.tokens.push({
-        type: this.options.sanitize
-          ? 'paragraph'
-          : 'html',
-        pre: cap[1] === 'pre' || cap[1] === 'script' || cap[1] === 'style',
-        text: cap[0]
-      });
-      continue;
-    }
-
-    // def
-    if ((!bq && top) && (cap = this.rules.def.exec(src))) {
-      src = src.substring(cap[0].length);
-      this.tokens.links[cap[1].toLowerCase()] = {
-        href: cap[2],
-        title: cap[3]
-      };
-      continue;
-    }
-
-    // table (gfm)
-    if (top && (cap = this.rules.table.exec(src))) {
-      src = src.substring(cap[0].length);
-
-      item = {
-        type: 'table',
-        header: cap[1].replace(/^ *| *\| *$/g, '').split(/ *\| */),
-        align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
-        cells: cap[3].replace(/(?: *\| *)?\n$/, '').split('\n')
-      };
-
-      for (i = 0; i < item.align.length; i++) {
-        if (/^ *-+: *$/.test(item.align[i])) {
-          item.align[i] = 'right';
-        } else if (/^ *:-+: *$/.test(item.align[i])) {
-          item.align[i] = 'center';
-        } else if (/^ *:-+ *$/.test(item.align[i])) {
-          item.align[i] = 'left';
-        } else {
-          item.align[i] = null;
-        }
-      }
-
-      for (i = 0; i < item.cells.length; i++) {
-        item.cells[i] = item.cells[i]
-          .replace(/^ *\| *| *\| *$/g, '')
-          .split(/ *\| */);
-      }
-
-      this.tokens.push(item);
-
-      continue;
-    }
-
-    // top-level paragraph
-    if (top && (cap = this.rules.paragraph.exec(src))) {
-      src = src.substring(cap[0].length);
-      this.tokens.push({
-        type: 'paragraph',
-        text: cap[1].charAt(cap[1].length - 1) === '\n'
-          ? cap[1].slice(0, -1)
-          : cap[1]
-      });
-      continue;
-    }
-
-    // text
-    if (cap = this.rules.text.exec(src)) {
-      // Top-level should never reach here.
-      src = src.substring(cap[0].length);
-      this.tokens.push({
-        type: 'text',
-        text: cap[0]
-      });
-      continue;
-    }
-
-    if (src) {
-      throw new
-        Error('Infinite loop on byte: ' + src.charCodeAt(0));
-    }
-  }
-
-  return this.tokens;
-};
-
-/**
- * Inline-Level Grammar
- */
-
-var inline = {
-  escape: /^\\([\\`*{}\[\]()#+\-.!_>])/,
-  autolink: /^<([^ >]+(@|:\/)[^ >]+)>/,
-  url: noop,
-  tag: /^<!--[\s\S]*?-->|^<\/?\w+(?:"[^"]*"|'[^']*'|[^'">])*?>/,
-  link: /^!?\[(inside)\]\(href\)/,
-  reflink: /^!?\[(inside)\]\s*\[([^\]]*)\]/,
-  nolink: /^!?\[((?:\[[^\]]*\]|[^\[\]])*)\]/,
-  strong: /^__([\s\S]+?)__(?!_)|^\*\*([\s\S]+?)\*\*(?!\*)/,
-  em: /^\b_((?:__|[\s\S])+?)_\b|^\*((?:\*\*|[\s\S])+?)\*(?!\*)/,
-  code: /^(`+)\s*([\s\S]*?[^`])\s*\1(?!`)/,
-  br: /^ {2,}\n(?!\s*$)/,
-  del: noop,
-  text: /^[\s\S]+?(?=[\\<!\[_*`]| {2,}\n|$)/
-};
-
-inline._inside = /(?:\[[^\]]*\]|[^\[\]]|\](?=[^\[]*\]))*/;
-inline._href = /\s*<?([\s\S]*?)>?(?:\s+['"]([\s\S]*?)['"])?\s*/;
-
-inline.link = replace(inline.link)
-  ('inside', inline._inside)
-  ('href', inline._href)
-  ();
-
-inline.reflink = replace(inline.reflink)
-  ('inside', inline._inside)
-  ();
-
-/**
- * Normal Inline Grammar
- */
-
-inline.normal = merge({}, inline);
-
-/**
- * Pedantic Inline Grammar
- */
-
-inline.pedantic = merge({}, inline.normal, {
-  strong: /^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,
-  em: /^_(?=\S)([\s\S]*?\S)_(?!_)|^\*(?=\S)([\s\S]*?\S)\*(?!\*)/
-});
-
-/**
- * GFM Inline Grammar
- */
-
-inline.gfm = merge({}, inline.normal, {
-  escape: replace(inline.escape)('])', '~|])')(),
-  url: /^(https?:\/\/[^\s<]+[^<.,:;"')\]\s])/,
-  del: /^~~(?=\S)([\s\S]*?\S)~~/,
-  text: replace(inline.text)
-    (']|', '~]|')
-    ('|', '|https?://|')
-    ()
-});
-
-/**
- * GFM + Line Breaks Inline Grammar
- */
-
-inline.breaks = merge({}, inline.gfm, {
-  br: replace(inline.br)('{2,}', '*')(),
-  text: replace(inline.gfm.text)('{2,}', '*')()
-});
-
-/**
- * Inline Lexer & Compiler
- */
-
-function InlineLexer(links, options) {
-  this.options = options || marked.defaults;
-  this.links = links;
-  this.rules = inline.normal;
-  this.renderer = this.options.renderer || new Renderer;
-  this.renderer.options = this.options;
-
-  if (!this.links) {
-    throw new
-      Error('Tokens array requires a `links` property.');
-  }
-
-  if (this.options.gfm) {
-    if (this.options.breaks) {
-      this.rules = inline.breaks;
-    } else {
-      this.rules = inline.gfm;
-    }
-  } else if (this.options.pedantic) {
-    this.rules = inline.pedantic;
-  }
-}
-
-/**
- * Expose Inline Rules
- */
-
-InlineLexer.rules = inline;
-
-/**
- * Static Lexing/Compiling Method
- */
-
-InlineLexer.output = function(src, links, options) {
-  var inline = new InlineLexer(links, options);
-  return inline.output(src);
-};
-
-/**
- * Lexing/Compiling
- */
-
-InlineLexer.prototype.output = function(src) {
-  var out = ''
-    , link
-    , text
-    , href
-    , cap;
-
-  while (src) {
-    // escape
-    if (cap = this.rules.escape.exec(src)) {
-      src = src.substring(cap[0].length);
-      out += cap[1];
-      continue;
-    }
-
-    // autolink
-    if (cap = this.rules.autolink.exec(src)) {
-      src = src.substring(cap[0].length);
-      if (cap[2] === '@') {
-        text = cap[1].charAt(6) === ':'
-          ? this.mangle(cap[1].substring(7))
-          : this.mangle(cap[1]);
-        href = this.mangle('mailto:') + text;
-      } else {
-        text = escape(cap[1]);
-        href = text;
-      }
-      out += this.renderer.link(href, null, text);
-      continue;
-    }
-
-    // url (gfm)
-    if (!this.inLink && (cap = this.rules.url.exec(src))) {
-      src = src.substring(cap[0].length);
-      text = escape(cap[1]);
-      href = text;
-      out += this.renderer.link(href, null, text);
-      continue;
-    }
-
-    // tag
-    if (cap = this.rules.tag.exec(src)) {
-      if (!this.inLink && /^<a /i.test(cap[0])) {
-        this.inLink = true;
-      } else if (this.inLink && /^<\/a>/i.test(cap[0])) {
-        this.inLink = false;
-      }
-      src = src.substring(cap[0].length);
-      out += this.options.sanitize
-        ? escape(cap[0])
-        : cap[0];
-      continue;
-    }
-
-    // link
-    if (cap = this.rules.link.exec(src)) {
-      src = src.substring(cap[0].length);
-      this.inLink = true;
-      out += this.outputLink(cap, {
-        href: cap[2],
-        title: cap[3]
-      });
-      this.inLink = false;
-      continue;
-    }
-
-    // reflink, nolink
-    if ((cap = this.rules.reflink.exec(src))
-        || (cap = this.rules.nolink.exec(src))) {
-      src = src.substring(cap[0].length);
-      link = (cap[2] || cap[1]).replace(/\s+/g, ' ');
-      link = this.links[link.toLowerCase()];
-      if (!link || !link.href) {
-        out += cap[0].charAt(0);
-        src = cap[0].substring(1) + src;
-        continue;
-      }
-      this.inLink = true;
-      out += this.outputLink(cap, link);
-      this.inLink = false;
-      continue;
-    }
-
-    // strong
-    if (cap = this.rules.strong.exec(src)) {
-      src = src.substring(cap[0].length);
-      out += this.renderer.strong(this.output(cap[2] || cap[1]));
-      continue;
-    }
-
-    // em
-    if (cap = this.rules.em.exec(src)) {
-      src = src.substring(cap[0].length);
-      out += this.renderer.em(this.output(cap[2] || cap[1]));
-      continue;
-    }
-
-    // code
-    if (cap = this.rules.code.exec(src)) {
-      src = src.substring(cap[0].length);
-      out += this.renderer.codespan(escape(cap[2], true));
-      continue;
-    }
-
-    // br
-    if (cap = this.rules.br.exec(src)) {
-      src = src.substring(cap[0].length);
-      out += this.renderer.br();
-      continue;
-    }
-
-    // del (gfm)
-    if (cap = this.rules.del.exec(src)) {
-      src = src.substring(cap[0].length);
-      out += this.renderer.del(this.output(cap[1]));
-      continue;
-    }
-
-    // text
-    if (cap = this.rules.text.exec(src)) {
-      src = src.substring(cap[0].length);
-      out += escape(this.smartypants(cap[0]));
-      continue;
-    }
-
-    if (src) {
-      throw new
-        Error('Infinite loop on byte: ' + src.charCodeAt(0));
-    }
-  }
-
-  return out;
-};
-
-/**
- * Compile Link
- */
-
-InlineLexer.prototype.outputLink = function(cap, link) {
-  var href = escape(link.href)
-    , title = link.title ? escape(link.title) : null;
-
-  return cap[0].charAt(0) !== '!'
-    ? this.renderer.link(href, title, this.output(cap[1]))
-    : this.renderer.image(href, title, escape(cap[1]));
-};
-
-/**
- * Smartypants Transformations
- */
-
-InlineLexer.prototype.smartypants = function(text) {
-  if (!this.options.smartypants) return text;
-  return text
-    // em-dashes
-    .replace(/--/g, '\u2014')
-    // opening singles
-    .replace(/(^|[-\u2014/(\[{"\s])'/g, '$1\u2018')
-    // closing singles & apostrophes
-    .replace(/'/g, '\u2019')
-    // opening doubles
-    .replace(/(^|[-\u2014/(\[{\u2018\s])"/g, '$1\u201c')
-    // closing doubles
-    .replace(/"/g, '\u201d')
-    // ellipses
-    .replace(/\.{3}/g, '\u2026');
-};
-
-/**
- * Mangle Links
- */
-
-InlineLexer.prototype.mangle = function(text) {
-  var out = ''
-    , l = text.length
-    , i = 0
-    , ch;
-
-  for (; i < l; i++) {
-    ch = text.charCodeAt(i);
-    if (Math.random() > 0.5) {
-      ch = 'x' + ch.toString(16);
-    }
-    out += '&#' + ch + ';';
-  }
-
-  return out;
-};
-
-/**
- * Renderer
- */
-
-function Renderer(options) {
-  this.options = options || {};
-}
-
-Renderer.prototype.code = function(code, lang, escaped) {
-  if (this.options.highlight) {
-    var out = this.options.highlight(code, lang);
-    if (out != null && out !== code) {
-      escaped = true;
-      code = out;
-    }
-  }
-
-  if (!lang) {
-    return '<pre><code>'
-      + (escaped ? code : escape(code, true))
-      + '\n</code></pre>';
-  }
-
-  return '<pre><code class="'
-    + this.options.langPrefix
-    + escape(lang, true)
-    + '">'
-    + (escaped ? code : escape(code, true))
-    + '\n</code></pre>\n';
-};
-
-Renderer.prototype.blockquote = function(quote) {
-  return '<blockquote>\n' + quote + '</blockquote>\n';
-};
-
-Renderer.prototype.html = function(html) {
-  return html;
-};
-
-Renderer.prototype.heading = function(text, level, raw) {
-  return '<h'
-    + level
-    + ' id="'
-    + this.options.headerPrefix
-    + raw.toLowerCase().replace(/[^\w]+/g, '-')
-    + '">'
-    + text
-    + '</h'
-    + level
-    + '>\n';
-};
-
-Renderer.prototype.hr = function() {
-  return this.options.xhtml ? '<hr/>\n' : '<hr>\n';
-};
-
-Renderer.prototype.list = function(body, ordered) {
-  var type = ordered ? 'ol' : 'ul';
-  return '<' + type + '>\n' + body + '</' + type + '>\n';
-};
-
-Renderer.prototype.listitem = function(text) {
-  return '<li>' + text + '</li>\n';
-};
-
-Renderer.prototype.paragraph = function(text) {
-  return '<p>' + text + '</p>\n';
-};
-
-Renderer.prototype.table = function(header, body) {
-  return '<table>\n'
-    + '<thead>\n'
-    + header
-    + '</thead>\n'
-    + '<tbody>\n'
-    + body
-    + '</tbody>\n'
-    + '</table>\n';
-};
-
-Renderer.prototype.tablerow = function(content) {
-  return '<tr>\n' + content + '</tr>\n';
-};
-
-Renderer.prototype.tablecell = function(content, flags) {
-  var type = flags.header ? 'th' : 'td';
-  var tag = flags.align
-    ? '<' + type + ' style="text-align:' + flags.align + '">'
-    : '<' + type + '>';
-  return tag + content + '</' + type + '>\n';
-};
-
-// span level renderer
-Renderer.prototype.strong = function(text) {
-  return '<strong>' + text + '</strong>';
-};
-
-Renderer.prototype.em = function(text) {
-  return '<em>' + text + '</em>';
-};
-
-Renderer.prototype.codespan = function(text) {
-  return '<code>' + text + '</code>';
-};
-
-Renderer.prototype.br = function() {
-  return this.options.xhtml ? '<br/>' : '<br>';
-};
-
-Renderer.prototype.del = function(text) {
-  return '<del>' + text + '</del>';
-};
-
-Renderer.prototype.link = function(href, title, text) {
-  if (this.options.sanitize) {
-    try {
-      var prot = decodeURIComponent(unescape(href))
-        .replace(/[^\w:]/g, '')
-        .toLowerCase();
-    } catch (e) {
-      return '';
-    }
-    if (prot.indexOf('javascript:') === 0) {
-      return '';
-    }
-  }
-  var out = '<a href="' + href + '"';
-  if (title) {
-    out += ' title="' + title + '"';
-  }
-  out += '>' + text + '</a>';
-  return out;
-};
-
-Renderer.prototype.image = function(href, title, text) {
-  var out = '<img src="' + href + '" alt="' + text + '"';
-  if (title) {
-    out += ' title="' + title + '"';
-  }
-  out += this.options.xhtml ? '/>' : '>';
-  return out;
-};
-
-/**
- * Parsing & Compiling
- */
-
-function Parser(options) {
-  this.tokens = [];
-  this.token = null;
-  this.options = options || marked.defaults;
-  this.options.renderer = this.options.renderer || new Renderer;
-  this.renderer = this.options.renderer;
-  this.renderer.options = this.options;
-}
-
-/**
- * Static Parse Method
- */
-
-Parser.parse = function(src, options, renderer) {
-  var parser = new Parser(options, renderer);
-  return parser.parse(src);
-};
-
-/**
- * Parse Loop
- */
-
-Parser.prototype.parse = function(src) {
-  this.inline = new InlineLexer(src.links, this.options, this.renderer);
-  this.tokens = src.reverse();
-
-  var out = '';
-  while (this.next()) {
-    out += this.tok();
-  }
-
-  return out;
-};
-
-/**
- * Next Token
- */
-
-Parser.prototype.next = function() {
-  return this.token = this.tokens.pop();
-};
-
-/**
- * Preview Next Token
- */
-
-Parser.prototype.peek = function() {
-  return this.tokens[this.tokens.length - 1] || 0;
-};
-
-/**
- * Parse Text Tokens
- */
-
-Parser.prototype.parseText = function() {
-  var body = this.token.text;
-
-  while (this.peek().type === 'text') {
-    body += '\n' + this.next().text;
-  }
-
-  return this.inline.output(body);
-};
-
-/**
- * Parse Current Token
- */
-
-Parser.prototype.tok = function() {
-  switch (this.token.type) {
-    case 'space': {
-      return '';
-    }
-    case 'hr': {
-      return this.renderer.hr();
-    }
-    case 'heading': {
-      return this.renderer.heading(
-        this.inline.output(this.token.text),
-        this.token.depth,
-        this.token.text);
-    }
-    case 'code': {
-      return this.renderer.code(this.token.text,
-        this.token.lang,
-        this.token.escaped);
-    }
-    case 'table': {
-      var header = ''
-        , body = ''
-        , i
-        , row
-        , cell
-        , flags
-        , j;
-
-      // header
-      cell = '';
-      for (i = 0; i < this.token.header.length; i++) {
-        flags = { header: true, align: this.token.align[i] };
-        cell += this.renderer.tablecell(
-          this.inline.output(this.token.header[i]),
-          { header: true, align: this.token.align[i] }
-        );
-      }
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FontFamily FontForm FontName FontOpacity FontPostScriptName FontProperties FontReencoding FontSize FontSlant FontSubstitutions FontTracking FontVariations FontWeight For ForAll Format FormatRules FormatType FormatTypeAutoConvert FormatValues FormBox FormBoxOptions FortranForm Forward ForwardBackward Fourier FourierCoefficient FourierCosCoefficient FourierCosSeries FourierCosTransform FourierDCT FourierDCTFilter FourierDCTMatrix FourierDST FourierDSTMatrix FourierMatrix FourierParameters FourierSequenceTransform FourierSeries FourierSinCoefficient FourierSinSeries FourierSinTransform FourierTransform FourierTrigSeries FractionalBrownianMotionProcess FractionalPart FractionBox FractionBoxOptions FractionLine Frame FrameBox FrameBoxOptions Framed FrameInset FrameLabel Frameless FrameMargins FrameStyle FrameTicks FrameTicksStyle FRatioDistribution FrechetDistribution FreeQ FrequencySamplingFilterKernel FresnelC FresnelS Friday FrobeniusNumber FrobeniusSolve FromCharacterCode FromCoefficientRules FromContinuedFraction FromDate FromDigits FromDMS Front FrontEndDynamicExpression FrontEndEventActions FrontEndExecute FrontEndObject FrontEndResource FrontEndResourceString FrontEndStackSize FrontEndToken FrontEndTokenExecute FrontEndValueCache FrontEndVersion FrontFaceColor FrontFaceOpacity Full FullAxes FullDefinition FullForm FullGraphics FullOptions FullSimplify Function FunctionExpand FunctionInterpolation FunctionSpace FussellVeselyImportance GaborFilter GaborMatrix GaborWavelet GainMargins GainPhaseMargins Gamma GammaDistribution GammaRegularized GapPenalty Gather GatherBy GaugeFaceElementFunction GaugeFaceStyle GaugeFrameElementFunction GaugeFrameSize GaugeFrameStyle GaugeLabels GaugeMarkers GaugeStyle GaussianFilter GaussianIntegers GaussianMatrix GaussianWindow GCD GegenbauerC General GeneralizedLinearModelFit GenerateConditions GeneratedCell GeneratedParameters GeneratingFunction Generic GenericCylindricalDecomposition GenomeData GenomeLookup GeodesicClosing GeodesicDilation GeodesicErosion GeodesicOpening GeoDestination GeodesyData GeoDirection GeoDistance GeoGridPosition GeometricBrownianMotionProcess GeometricDistribution GeometricMean GeometricMeanFilter GeometricTransformation GeometricTransformation3DBox GeometricTransformation3DBoxOptions GeometricTransformationBox GeometricTransformationBoxOptions GeoPosition GeoPositionENU GeoPositionXYZ GeoProjectionData GestureHandler GestureHandlerTag Get GetBoundingBoxSizePacket GetContext GetEnvironment GetFileName GetFrontEndOptionsDataPacket GetLinebreakInformationPacket GetMenusPacket GetPageBreakInformationPacket Glaisher GlobalClusteringCoefficient GlobalPreferences GlobalSession Glow GoldenRatio GompertzMakehamDistribution GoodmanKruskalGamma GoodmanKruskalGammaTest Goto Grad Gradient GradientFilter GradientOrientationFilter Graph GraphAssortativity GraphCenter GraphComplement GraphData GraphDensity GraphDiameter GraphDifference GraphDisjointUnion GraphDistance GraphDistanceMatrix GraphElementData GraphEmbedding GraphHighlight GraphHighlightStyle GraphHub Graphics Graphics3D Graphics3DBox Graphics3DBoxOptions GraphicsArray GraphicsBaseline GraphicsBox GraphicsBoxOptions GraphicsColor GraphicsColumn GraphicsComplex GraphicsComplex3DBox GraphicsComplex3DBoxOptions GraphicsComplexBox GraphicsComplexBoxOptions GraphicsContents GraphicsData GraphicsGrid GraphicsGridBox GraphicsGroup GraphicsGroup3DBox GraphicsGroup3DBoxOptions GraphicsGroupBox GraphicsGroupBoxOptions GraphicsGrouping GraphicsHighlightColor GraphicsRow GraphicsSpacing GraphicsStyle GraphIntersection GraphLayout GraphLinkEfficiency GraphPeriphery GraphPlot GraphPlot3D GraphPower GraphPropertyDistribution GraphQ GraphRadius GraphReciprocity GraphRoot GraphStyle GraphUnion Gray GrayLevel GreatCircleDistance Greater GreaterEqual GreaterEqualLess GreaterFullEqual GreaterGreater GreaterLess GreaterSlantEqual GreaterTilde Green Grid GridBaseline GridBox GridBoxAlignment GridBoxBackground GridBoxDividers GridBoxFrame GridBoxItemSize GridBoxItemStyle GridBoxOptions GridBoxSpacings GridCreationSettings GridDefaultElement GridElementStyleOptions GridFrame GridFrameMargins GridGraph GridLines GridLinesStyle GroebnerBasis GroupActionBase GroupCentralizer GroupElementFromWord GroupElementPosition GroupElementQ GroupElements GroupElementToWord GroupGenerators GroupMultiplicationTable GroupOrbits GroupOrder GroupPageBreakWithin GroupSetwiseStabilizer GroupStabilizer GroupStabilizerChain Gudermannian GumbelDistribution HaarWavelet HadamardMatrix HalfNormalDistribution HamiltonianGraphQ HammingDistance HammingWindow HankelH1 HankelH2 HankelMatrix HannPoissonWindow HannWindow HaradaNortonGroupHN HararyGraph HarmonicMean HarmonicMeanFilter HarmonicNumber Hash HashTable Haversine HazardFunction Head HeadCompose Heads HeavisideLambda HeavisidePi HeavisideTheta HeldGroupHe HeldPart HelpBrowserLookup HelpBrowserNotebook HelpBrowserSettings HermiteDecomposition HermiteH HermitianMatrixQ HessenbergDecomposition Hessian HexadecimalCharacter Hexahedron HexahedronBox HexahedronBoxOptions HiddenSurface HighlightGraph HighlightImage HighpassFilter HigmanSimsGroupHS HilbertFilter HilbertMatrix Histogram Histogram3D HistogramDistribution HistogramList HistogramTransform HistogramTransformInterpolation HitMissTransform HITSCentrality HodgeDual HoeffdingD HoeffdingDTest Hold HoldAll HoldAllComplete HoldComplete HoldFirst HoldForm HoldPattern HoldRest HolidayCalendar HomeDirectory HomePage Horizontal HorizontalForm HorizontalGauge HorizontalScrollPosition HornerForm HotellingTSquareDistribution HoytDistribution HTMLSave Hue HumpDownHump HumpEqual HurwitzLerchPhi HurwitzZeta HyperbolicDistribution HypercubeGraph HyperexponentialDistribution Hyperfactorial Hypergeometric0F1 Hypergeometric0F1Regularized Hypergeometric1F1 Hypergeometric1F1Regularized Hypergeometric2F1 Hypergeometric2F1Regularized HypergeometricDistribution HypergeometricPFQ HypergeometricPFQRegularized HypergeometricU Hyperlink HyperlinkCreationSettings Hyphenation HyphenationOptions HypoexponentialDistribution HypothesisTestData I Identity IdentityMatrix If IgnoreCase Im Image Image3D Image3DSlices ImageAccumulate ImageAdd ImageAdjust ImageAlign ImageApply ImageAspectRatio ImageAssemble ImageCache ImageCacheValid ImageCapture ImageChannels ImageClip ImageColorSpace ImageCompose ImageConvolve ImageCooccurrence ImageCorners ImageCorrelate ImageCorrespondingPoints ImageCrop ImageData ImageDataPacket ImageDeconvolve ImageDemosaic ImageDifference ImageDimensions ImageDistance ImageEffect ImageFeatureTrack ImageFileApply ImageFileFilter ImageFileScan ImageFilter ImageForestingComponents ImageForwardTransformation ImageHistogram ImageKeypoints ImageLevels ImageLines ImageMargins ImageMarkers ImageMeasurements ImageMultiply ImageOffset ImagePad ImagePadding ImagePartition ImagePeriodogram ImagePerspectiveTransformation ImageQ ImageRangeCache ImageReflect ImageRegion ImageResize ImageResolution ImageRotate ImageRotated ImageScaled ImageScan ImageSize ImageSizeAction ImageSizeCache ImageSizeMultipliers ImageSizeRaw ImageSubtract ImageTake ImageTransformation ImageTrim ImageType ImageValue ImageValuePositions Implies Import ImportAutoReplacements ImportString ImprovementImportance In IncidenceGraph IncidenceList IncidenceMatrix IncludeConstantBasis IncludeFileExtension IncludePods IncludeSingularTerm Increment Indent IndentingNewlineSpacings IndentMaxFraction IndependenceTest IndependentEdgeSetQ IndependentUnit IndependentVertexSetQ Indeterminate IndexCreationOptions Indexed IndexGraph IndexTag Inequality InexactNumberQ InexactNumbers Infinity Infix Information Inherited InheritScope Initialization InitializationCell InitializationCellEvaluation InitializationCellWarning InlineCounterAssignments InlineCounterIncrements InlineRules Inner Inpaint Input InputAliases InputAssumptions InputAutoReplacements InputField InputFieldBox InputFieldBoxOptions InputForm InputGrouping InputNamePacket InputNotebook InputPacket InputSettings InputStream InputString InputStringPacket InputToBoxFormPacket Insert InsertionPointObject InsertResults Inset Inset3DBox Inset3DBoxOptions InsetBox InsetBoxOptions Install InstallService InString Integer IntegerDigits IntegerExponent IntegerLength IntegerPart IntegerPartitions IntegerQ Integers IntegerString Integral Integrate Interactive InteractiveTradingChart Interlaced Interleaving InternallyBalancedDecomposition InterpolatingFunction InterpolatingPolynomial Interpolation InterpolationOrder InterpolationPoints InterpolationPrecision Interpretation InterpretationBox InterpretationBoxOptions InterpretationFunction InterpretTemplate InterquartileRange Interrupt InterruptSettings Intersection Interval IntervalIntersection IntervalMemberQ IntervalUnion Inverse InverseBetaRegularized InverseCDF InverseChiSquareDistribution InverseContinuousWaveletTransform InverseDistanceTransform InverseEllipticNomeQ InverseErf InverseErfc InverseFourier InverseFourierCosTransform InverseFourierSequenceTransform InverseFourierSinTransform InverseFourierTransform InverseFunction InverseFunctions InverseGammaDistribution InverseGammaRegularized InverseGaussianDistribution InverseGudermannian InverseHaversine InverseJacobiCD InverseJacobiCN InverseJacobiCS InverseJacobiDC InverseJacobiDN InverseJacobiDS InverseJacobiNC InverseJacobiND InverseJacobiNS InverseJacobiSC InverseJacobiSD InverseJacobiSN InverseLaplaceTransform InversePermutation InverseRadon InverseSeries InverseSurvivalFunction InverseWaveletTransform InverseWeierstrassP InverseZTransform Invisible InvisibleApplication InvisibleTimes IrreduciblePolynomialQ IsolatingInterval IsomorphicGraphQ IsotopeData Italic Item ItemBox ItemBoxOptions ItemSize ItemStyle ItoProcess JaccardDissimilarity JacobiAmplitude Jacobian JacobiCD JacobiCN JacobiCS JacobiDC JacobiDN JacobiDS JacobiNC JacobiND JacobiNS JacobiP JacobiSC JacobiSD JacobiSN JacobiSymbol JacobiZeta JankoGroupJ1 JankoGroupJ2 JankoGroupJ3 JankoGroupJ4 JarqueBeraALMTest JohnsonDistribution Join Joined JoinedCurve JoinedCurveBox JoinForm JordanDecomposition JordanModelDecomposition K KagiChart KaiserBesselWindow KaiserWindow KalmanEstimator KalmanFilter KarhunenLoeveDecomposition KaryTree KatzCentrality KCoreComponents KDistribution KelvinBei KelvinBer KelvinKei KelvinKer KendallTau KendallTauTest KernelExecute KernelMixtureDistribution KernelObject Kernels Ket Khinchin KirchhoffGraph KirchhoffMatrix KleinInvariantJ KnightTourGraph KnotData KnownUnitQ KolmogorovSmirnovTest KroneckerDelta KroneckerModelDecomposition KroneckerProduct KroneckerSymbol KuiperTest KumaraswamyDistribution Kurtosis KuwaharaFilter Label Labeled LabeledSlider LabelingFunction LabelStyle LaguerreL LambdaComponents LambertW LanczosWindow LandauDistribution Language LanguageCategory LaplaceDistribution LaplaceTransform Laplacian LaplacianFilter LaplacianGaussianFilter Large Larger Last Latitude LatitudeLongitude LatticeData LatticeReduce Launch LaunchKernels LayeredGraphPlot LayerSizeFunction LayoutInformation LCM LeafCount LeapYearQ LeastSquares LeastSquaresFilterKernel Left LeftArrow LeftArrowBar LeftArrowRightArrow LeftDownTeeVector LeftDownVector LeftDownVectorBar LeftRightArrow LeftRightVector LeftTee LeftTeeArrow LeftTeeVector LeftTriangle LeftTriangleBar LeftTriangleEqual LeftUpDownVector LeftUpTeeVector LeftUpVector LeftUpVectorBar LeftVector LeftVectorBar LegendAppearance Legended LegendFunction LegendLabel LegendLayout LegendMargins LegendMarkers LegendMarkerSize LegendreP LegendreQ LegendreType Length LengthWhile LerchPhi Less LessEqual LessEqualGreater LessFullEqual LessGreater LessLess LessSlantEqual LessTilde LetterCharacter LetterQ Level LeveneTest LeviCivitaTensor LevyDistribution Lexicographic LibraryFunction LibraryFunctionError LibraryFunctionInformation LibraryFunctionLoad LibraryFunctionUnload LibraryLoad LibraryUnload LicenseID LiftingFilterData LiftingWaveletTransform LightBlue LightBrown LightCyan Lighter LightGray LightGreen Lighting LightingAngle LightMagenta LightOrange LightPink LightPurple LightRed LightSources LightYellow Likelihood Limit LimitsPositioning LimitsPositioningTokens LindleyDistribution Line Line3DBox LinearFilter LinearFractionalTransform LinearModelFit LinearOffsetFunction LinearProgramming LinearRecurrence LinearSolve LinearSolveFunction LineBox LineBreak LinebreakAdjustments LineBreakChart LineBreakWithin LineColor LineForm LineGraph LineIndent LineIndentMaxFraction LineIntegralConvolutionPlot LineIntegralConvolutionScale LineLegend LineOpacity LineSpacing LineWrapParts LinkActivate LinkClose LinkConnect LinkConnectedQ LinkCreate LinkError LinkFlush LinkFunction LinkHost LinkInterrupt LinkLaunch LinkMode LinkObject LinkOpen LinkOptions LinkPatterns LinkProtocol LinkRead LinkReadHeld LinkReadyQ Links LinkWrite LinkWriteHeld LiouvilleLambda List Listable ListAnimate ListContourPlot ListContourPlot3D ListConvolve ListCorrelate ListCurvePathPlot ListDeconvolve ListDensityPlot Listen ListFourierSequenceTransform ListInterpolation ListLineIntegralConvolutionPlot ListLinePlot ListLogLinearPlot ListLogLogPlot ListLogPlot ListPicker ListPickerBox ListPickerBoxBackground ListPickerBoxOptions ListPlay ListPlot ListPlot3D ListPointPlot3D ListPolarPlot ListQ ListStreamDensityPlot ListStreamPlot ListSurfacePlot3D ListVectorDensityPlot ListVectorPlot ListVectorPlot3D ListZTransform Literal LiteralSearch LocalClusteringCoefficient LocalizeVariables LocationEquivalenceTest LocationTest Locator LocatorAutoCreate LocatorBox LocatorBoxOptions LocatorCentering LocatorPane LocatorPaneBox LocatorPaneBoxOptions LocatorRegion Locked Log Log10 Log2 LogBarnesG LogGamma LogGammaDistribution LogicalExpand LogIntegral LogisticDistribution LogitModelFit LogLikelihood LogLinearPlot LogLogisticDistribution LogLogPlot LogMultinormalDistribution LogNormalDistribution LogPlot LogRankTest LogSeriesDistribution LongEqual Longest LongestAscendingSequence LongestCommonSequence LongestCommonSequencePositions LongestCommonSubsequence LongestCommonSubsequencePositions LongestMatch LongForm Longitude LongLeftArrow LongLeftRightArrow LongRightArrow Loopback LoopFreeGraphQ LowerCaseQ LowerLeftArrow LowerRightArrow LowerTriangularize LowpassFilter LQEstimatorGains LQGRegulator LQOutputRegulatorGains LQRegulatorGains LUBackSubstitution LucasL LuccioSamiComponents LUDecomposition LyapunovSolve LyonsGroupLy MachineID MachineName MachineNumberQ MachinePrecision MacintoshSystemPageSetup Magenta Magnification Magnify MainSolve MaintainDynamicCaches Majority MakeBoxes MakeExpression MakeRules MangoldtLambda ManhattanDistance Manipulate Manipulator MannWhitneyTest MantissaExponent Manual Map MapAll MapAt MapIndexed MAProcess MapThread MarcumQ MardiaCombinedTest MardiaKurtosisTest MardiaSkewnessTest MarginalDistribution MarkovProcessProperties Masking MatchingDissimilarity MatchLocalNameQ MatchLocalNames MatchQ Material MathematicaNotation MathieuC MathieuCharacteristicA MathieuCharacteristicB MathieuCharacteristicExponent MathieuCPrime MathieuGroupM11 MathieuGroupM12 MathieuGroupM22 MathieuGroupM23 MathieuGroupM24 MathieuS MathieuSPrime MathMLForm MathMLText Matrices MatrixExp MatrixForm MatrixFunction MatrixLog MatrixPlot MatrixPower MatrixQ MatrixRank Max MaxBend MaxDetect MaxExtraBandwidths MaxExtraConditions MaxFeatures MaxFilter Maximize MaxIterations MaxMemoryUsed MaxMixtureKernels MaxPlotPoints MaxPoints MaxRecursion MaxStableDistribution MaxStepFraction MaxSteps MaxStepSize MaxValue MaxwellDistribution McLaughlinGroupMcL Mean MeanClusteringCoefficient MeanDegreeConnectivity MeanDeviation MeanFilter MeanGraphDistance MeanNeighborDegree MeanShift MeanShiftFilter Median MedianDeviation MedianFilter Medium MeijerG MeixnerDistribution MemberQ MemoryConstrained MemoryInUse Menu MenuAppearance MenuCommandKey MenuEvaluator MenuItem MenuPacket MenuSortingValue MenuStyle MenuView MergeDifferences Mesh MeshFunctions MeshRange MeshShading MeshStyle Message MessageDialog MessageList MessageName MessageOptions MessagePacket Messages MessagesNotebook MetaCharacters MetaInformation Method MethodOptions MexicanHatWavelet MeyerWavelet Min MinDetect MinFilter MinimalPolynomial MinimalStateSpaceModel Minimize Minors MinRecursion MinSize MinStableDistribution Minus MinusPlus MinValue Missing MissingDataMethod MittagLefflerE MixedRadix MixedRadixQuantity MixtureDistribution Mod Modal Mode Modular ModularLambda Module Modulus MoebiusMu Moment Momentary MomentConvert MomentEvaluate MomentGeneratingFunction Monday Monitor MonomialList MonomialOrder MonsterGroupM MorletWavelet MorphologicalBinarize MorphologicalBranchPoints MorphologicalComponents MorphologicalEulerNumber MorphologicalGraph MorphologicalPerimeter MorphologicalTransform Most MouseAnnotation MouseAppearance MouseAppearanceTag MouseButtons Mouseover MousePointerNote MousePosition MovingAverage MovingMedian MoyalDistribution MultiedgeStyle MultilaunchWarning MultiLetterItalics MultiLetterStyle MultilineFunction Multinomial MultinomialDistribution MultinormalDistribution MultiplicativeOrder Multiplicity Multiselection MultivariateHypergeometricDistribution MultivariatePoissonDistribution MultivariateTDistribution N NakagamiDistribution NameQ Names NamespaceBox Nand NArgMax NArgMin NBernoulliB NCache NDSolve NDSolveValue Nearest NearestFunction NeedCurrentFrontEndPackagePacket NeedCurrentFrontEndSymbolsPacket NeedlemanWunschSimilarity Needs Negative NegativeBinomialDistribution NegativeMultinomialDistribution NeighborhoodGraph Nest NestedGreaterGreater NestedLessLess NestedScriptRules NestList NestWhile NestWhileList NevilleThetaC NevilleThetaD NevilleThetaN NevilleThetaS NewPrimitiveStyle NExpectation Next NextPrime NHoldAll NHoldFirst NHoldRest NicholsGridLines NicholsPlot NIntegrate NMaximize NMaxValue NMinimize NMinValue NominalVariables NonAssociative NoncentralBetaDistribution NoncentralChiSquareDistribution NoncentralFRatioDistribution NoncentralStudentTDistribution NonCommutativeMultiply NonConstants None NonlinearModelFit NonlocalMeansFilter NonNegative NonPositive Nor NorlundB Norm Normal NormalDistribution NormalGrouping Normalize NormalizedSquaredEuclideanDistance NormalsFunction NormFunction Not NotCongruent NotCupCap NotDoubleVerticalBar Notebook NotebookApply NotebookAutoSave NotebookClose NotebookConvertSettings NotebookCreate NotebookCreateReturnObject NotebookDefault NotebookDelete NotebookDirectory NotebookDynamicExpression NotebookEvaluate NotebookEventActions NotebookFileName NotebookFind NotebookFindReturnObject NotebookGet NotebookGetLayoutInformationPacket NotebookGetMisspellingsPacket NotebookInformation NotebookInterfaceObject NotebookLocate NotebookObject NotebookOpen NotebookOpenReturnObject NotebookPath NotebookPrint NotebookPut NotebookPutReturnObject NotebookRead NotebookResetGeneratedCells Notebooks NotebookSave NotebookSaveAs NotebookSelection NotebookSetupLayoutInformationPacket NotebooksMenu NotebookWrite NotElement NotEqualTilde NotExists NotGreater NotGreaterEqual NotGreaterFullEqual NotGreaterGreater NotGreaterLess NotGreaterSlantEqual NotGreaterTilde NotHumpDownHump NotHumpEqual NotLeftTriangle NotLeftTriangleBar NotLeftTriangleEqual NotLess NotLessEqual NotLessFullEqual NotLessGreater NotLessLess NotLessSlantEqual NotLessTilde NotNestedGreaterGreater NotNestedLessLess NotPrecedes NotPrecedesEqual NotPrecedesSlantEqual NotPrecedesTilde NotReverseElement NotRightTriangle NotRightTriangleBar NotRightTriangleEqual NotSquareSubset NotSquareSubsetEqual NotSquareSuperset NotSquareSupersetEqual NotSubset NotSubsetEqual NotSucceeds NotSucceedsEqual NotSucceedsSlantEqual NotSucceedsTilde NotSuperset NotSupersetEqual NotTilde NotTildeEqual NotTildeFullEqual NotTildeTilde NotVerticalBar NProbability NProduct NProductFactors NRoots NSolve NSum NSumTerms Null NullRecords NullSpace NullWords Number NumberFieldClassNumber NumberFieldDiscriminant NumberFieldFundamentalUnits NumberFieldIntegralBasis NumberFieldNormRepresentatives NumberFieldRegulator NumberFieldRootsOfUnity NumberFieldSignature NumberForm NumberFormat NumberMarks NumberMultiplier NumberPadding NumberPoint NumberQ NumberSeparator NumberSigns NumberString Numerator NumericFunction NumericQ NuttallWindow NValues NyquistGridLines NyquistPlot O ObservabilityGramian ObservabilityMatrix ObservableDecomposition ObservableModelQ OddQ Off Offset OLEData On ONanGroupON OneIdentity Opacity Open OpenAppend Opener OpenerBox OpenerBoxOptions OpenerView OpenFunctionInspectorPacket Opening OpenRead OpenSpecialOptions OpenTemporary OpenWrite Operate OperatingSystem OptimumFlowData Optional OptionInspectorSettings OptionQ Options OptionsPacket OptionsPattern OptionValue OptionValueBox OptionValueBoxOptions Or Orange Order OrderDistribution OrderedQ Ordering Orderless OrnsteinUhlenbeckProcess Orthogonalize Out Outer OutputAutoOverwrite OutputControllabilityMatrix OutputControllableModelQ OutputForm OutputFormData OutputGrouping OutputMathEditExpression OutputNamePacket OutputResponse OutputSizeLimit OutputStream Over OverBar OverDot Overflow OverHat Overlaps Overlay OverlayBox OverlayBoxOptions Overscript OverscriptBox OverscriptBoxOptions OverTilde OverVector OwenT OwnValues PackingMethod PaddedForm Padding PadeApproximant PadLeft PadRight PageBreakAbove PageBreakBelow PageBreakWithin PageFooterLines PageFooters PageHeaderLines PageHeaders PageHeight PageRankCentrality PageWidth PairedBarChart PairedHistogram PairedSmoothHistogram PairedTTest PairedZTest PaletteNotebook PalettePath Pane PaneBox PaneBoxOptions Panel PanelBox PanelBoxOptions Paneled PaneSelector PaneSelectorBox PaneSelectorBoxOptions PaperWidth ParabolicCylinderD ParagraphIndent ParagraphSpacing ParallelArray ParallelCombine ParallelDo ParallelEvaluate Parallelization Parallelize ParallelMap ParallelNeeds ParallelProduct ParallelSubmit ParallelSum ParallelTable ParallelTry Parameter ParameterEstimator ParameterMixtureDistribution ParameterVariables ParametricFunction ParametricNDSolve ParametricNDSolveValue ParametricPlot ParametricPlot3D ParentConnect ParentDirectory ParentForm Parenthesize ParentList ParetoDistribution Part PartialCorrelationFunction PartialD ParticleData Partition PartitionsP PartitionsQ ParzenWindow PascalDistribution PassEventsDown PassEventsUp Paste PasteBoxFormInlineCells PasteButton Path PathGraph PathGraphQ Pattern PatternSequence PatternTest PauliMatrix PaulWavelet Pause PausedTime PDF PearsonChiSquareTest PearsonCorrelationTest PearsonDistribution PerformanceGoal PeriodicInterpolation Periodogram PeriodogramArray PermutationCycles PermutationCyclesQ PermutationGroup PermutationLength PermutationList PermutationListQ PermutationMax PermutationMin PermutationOrder PermutationPower PermutationProduct PermutationReplace Permutations PermutationSupport Permute PeronaMalikFilter Perpendicular PERTDistribution PetersenGraph PhaseMargins Pi Pick PIDData PIDDerivativeFilter PIDFeedforward PIDTune Piecewise PiecewiseExpand PieChart PieChart3D PillaiTrace PillaiTraceTest Pink Pivoting PixelConstrained PixelValue PixelValuePositions Placed Placeholder PlaceholderReplace Plain PlanarGraphQ Play PlayRange Plot Plot3D Plot3Matrix PlotDivision PlotJoined PlotLabel PlotLayout PlotLegends PlotMarkers PlotPoints PlotRange PlotRangeClipping PlotRangePadding PlotRegion PlotStyle Plus PlusMinus Pochhammer PodStates PodWidth Point Point3DBox PointBox PointFigureChart PointForm PointLegend PointSize PoissonConsulDistribution PoissonDistribution PoissonProcess PoissonWindow PolarAxes PolarAxesOrigin PolarGridLines PolarPlot PolarTicks PoleZeroMarkers PolyaAeppliDistribution PolyGamma Polygon Polygon3DBox Polygon3DBoxOptions PolygonBox PolygonBoxOptions PolygonHoleScale PolygonIntersections PolygonScale PolyhedronData PolyLog PolynomialExtendedGCD PolynomialForm PolynomialGCD PolynomialLCM PolynomialMod PolynomialQ PolynomialQuotient PolynomialQuotientRemainder PolynomialReduce PolynomialRemainder Polynomials PopupMenu PopupMenuBox PopupMenuBoxOptions PopupView PopupWindow Position Positive PositiveDefiniteMatrixQ PossibleZeroQ Postfix PostScript Power PowerDistribution PowerExpand PowerMod PowerModList PowerSpectralDensity PowersRepresentations PowerSymmetricPolynomial Precedence PrecedenceForm Precedes PrecedesEqual PrecedesSlantEqual PrecedesTilde Precision PrecisionGoal PreDecrement PredictionRoot PreemptProtect PreferencesPath Prefix PreIncrement Prepend PrependTo PreserveImageOptions Previous PriceGraphDistribution PrimaryPlaceholder Prime PrimeNu PrimeOmega PrimePi PrimePowerQ PrimeQ Primes PrimeZetaP PrimitiveRoot PrincipalComponents PrincipalValue Print PrintAction PrintForm PrintingCopies PrintingOptions PrintingPageRange PrintingStartingPageNumber PrintingStyleEnvironment PrintPrecision PrintTemporary Prism PrismBox PrismBoxOptions PrivateCellOptions PrivateEvaluationOptions PrivateFontOptions PrivateFrontEndOptions PrivateNotebookOptions PrivatePaths Probability ProbabilityDistribution ProbabilityPlot ProbabilityPr ProbabilityScalePlot ProbitModelFit ProcessEstimator ProcessParameterAssumptions ProcessParameterQ ProcessStateDomain ProcessTimeDomain Product ProductDistribution ProductLog ProgressIndicator ProgressIndicatorBox ProgressIndicatorBoxOptions Projection Prolog PromptForm Properties Property PropertyList PropertyValue Proportion Proportional Protect Protected ProteinData Pruning PseudoInverse Purple Put PutAppend Pyramid PyramidBox PyramidBoxOptions QBinomial QFactorial QGamma QHypergeometricPFQ QPochhammer QPolyGamma QRDecomposition QuadraticIrrationalQ Quantile QuantilePlot Quantity QuantityForm QuantityMagnitude QuantityQ QuantityUnit Quartics QuartileDeviation Quartiles QuartileSkewness QueueingNetworkProcess QueueingProcess QueueProperties Quiet Quit Quotient QuotientRemainder RadialityCentrality RadicalBox RadicalBoxOptions RadioButton RadioButtonBar RadioButtonBox RadioButtonBoxOptions Radon RamanujanTau RamanujanTauL RamanujanTauTheta RamanujanTauZ Random RandomChoice RandomComplex RandomFunction RandomGraph RandomImage RandomInteger RandomPermutation RandomPrime RandomReal RandomSample RandomSeed RandomVariate RandomWalkProcess Range RangeFilter RangeSpecification RankedMax RankedMin Raster Raster3D Raster3DBox Raster3DBoxOptions RasterArray RasterBox RasterBoxOptions Rasterize RasterSize Rational RationalFunctions Rationalize Rationals Ratios Raw RawArray RawBoxes RawData RawMedium RayleighDistribution Re Read ReadList ReadProtected Real RealBlockDiagonalForm RealDigits RealExponent Reals Reap Record RecordLists RecordSeparators Rectangle RectangleBox RectangleBoxOptions RectangleChart RectangleChart3D RecurrenceFilter RecurrenceTable RecurringDigitsForm Red Reduce RefBox ReferenceLineStyle ReferenceMarkers ReferenceMarkerStyle Refine ReflectionMatrix ReflectionTransform Refresh RefreshRate RegionBinarize RegionFunction RegionPlot RegionPlot3D RegularExpression Regularization Reinstall Release ReleaseHold ReliabilityDistribution ReliefImage ReliefPlot Remove RemoveAlphaChannel RemoveAsynchronousTask Removed RemoveInputStreamMethod RemoveOutputStreamMethod RemoveProperty RemoveScheduledTask RenameDirectory RenameFile RenderAll RenderingOptions RenewalProcess RenkoChart Repeated RepeatedNull RepeatedString Replace ReplaceAll ReplaceHeldPart ReplaceImageValue ReplaceList ReplacePart ReplacePixelValue ReplaceRepeated Resampling Rescale RescalingTransform ResetDirectory ResetMenusPacket ResetScheduledTask Residue Resolve Rest Resultant ResumePacket Return ReturnExpressionPacket ReturnInputFormPacket ReturnPacket ReturnTextPacket Reverse ReverseBiorthogonalSplineWavelet ReverseElement ReverseEquilibrium ReverseGraph ReverseUpEquilibrium RevolutionAxis RevolutionPlot3D RGBColor RiccatiSolve RiceDistribution RidgeFilter RiemannR RiemannSiegelTheta RiemannSiegelZ Riffle Right RightArrow RightArrowBar RightArrowLeftArrow RightCosetRepresentative RightDownTeeVector RightDownVector RightDownVectorBar RightTee RightTeeArrow RightTeeVector RightTriangle RightTriangleBar RightTriangleEqual RightUpDownVector RightUpTeeVector RightUpVector RightUpVectorBar RightVector RightVectorBar RiskAchievementImportance RiskReductionImportance RogersTanimotoDissimilarity Root RootApproximant RootIntervals RootLocusPlot RootMeanSquare RootOfUnityQ RootReduce Roots RootSum Rotate RotateLabel RotateLeft RotateRight RotationAction RotationBox RotationBoxOptions RotationMatrix RotationTransform Round RoundImplies RoundingRadius Row RowAlignments RowBackgrounds RowBox RowHeights RowLines RowMinHeight RowReduce RowsEqual RowSpacings RSolve RudvalisGroupRu Rule RuleCondition RuleDelayed RuleForm RulerUnits Run RunScheduledTask RunThrough RuntimeAttributes RuntimeOptions RussellRaoDissimilarity SameQ SameTest SampleDepth SampledSoundFunction SampledSoundList SampleRate SamplingPeriod SARIMAProcess SARMAProcess SatisfiabilityCount SatisfiabilityInstances SatisfiableQ Saturday Save Saveable SaveAutoDelete SaveDefinitions SawtoothWave Scale Scaled ScaleDivisions ScaledMousePosition ScaleOrigin ScalePadding ScaleRanges ScaleRangeStyle ScalingFunctions ScalingMatrix ScalingTransform Scan ScheduledTaskActiveQ ScheduledTaskData ScheduledTaskObject ScheduledTasks SchurDecomposition ScientificForm ScreenRectangle ScreenStyleEnvironment ScriptBaselineShifts ScriptLevel ScriptMinSize ScriptRules ScriptSizeMultipliers Scrollbars ScrollingOptions ScrollPosition Sec Sech SechDistribution SectionGrouping SectorChart SectorChart3D SectorOrigin SectorSpacing SeedRandom Select Selectable SelectComponents SelectedCells SelectedNotebook Selection SelectionAnimate SelectionCell SelectionCellCreateCell SelectionCellDefaultStyle SelectionCellParentStyle SelectionCreateCell SelectionDebuggerTag SelectionDuplicateCell SelectionEvaluate SelectionEvaluateCreateCell SelectionMove SelectionPlaceholder SelectionSetStyle SelectWithContents SelfLoops SelfLoopStyle SemialgebraicComponentInstances SendMail Sequence SequenceAlignment SequenceForm SequenceHold SequenceLimit Series SeriesCoefficient SeriesData SessionTime Set SetAccuracy SetAlphaChannel SetAttributes Setbacks SetBoxFormNamesPacket SetDelayed SetDirectory SetEnvironment SetEvaluationNotebook SetFileDate SetFileLoadingContext SetNotebookStatusLine SetOptions SetOptionsPacket SetPrecision SetProperty SetSelectedNotebook SetSharedFunction SetSharedVariable SetSpeechParametersPacket SetStreamPosition SetSystemOptions Setter SetterBar SetterBox SetterBoxOptions Setting SetValue Shading Shallow ShannonWavelet ShapiroWilkTest Share Sharpen ShearingMatrix ShearingTransform ShenCastanMatrix Short ShortDownArrow Shortest ShortestMatch ShortestPathFunction ShortLeftArrow ShortRightArrow ShortUpArrow Show ShowAutoStyles ShowCellBracket ShowCellLabel ShowCellTags ShowClosedCellArea ShowContents ShowControls ShowCursorTracker ShowGroupOpenCloseIcon ShowGroupOpener ShowInvisibleCharacters ShowPageBreaks ShowPredictiveInterface ShowSelection ShowShortBoxForm ShowSpecialCharacters ShowStringCharacters ShowSyntaxStyles ShrinkingDelay ShrinkWrapBoundingBox SiegelTheta SiegelTukeyTest Sign Signature SignedRankTest SignificanceLevel SignPadding SignTest SimilarityRules SimpleGraph SimpleGraphQ Simplify Sin Sinc SinghMaddalaDistribution SingleEvaluation SingleLetterItalics SingleLetterStyle SingularValueDecomposition SingularValueList SingularValuePlot SingularValues Sinh SinhIntegral SinIntegral SixJSymbol Skeleton SkeletonTransform SkellamDistribution Skewness SkewNormalDistribution Skip SliceDistribution Slider Slider2D Slider2DBox Slider2DBoxOptions SliderBox SliderBoxOptions SlideView Slot SlotSequence Small SmallCircle Smaller SmithDelayCompensator SmithWatermanSimilarity SmoothDensityHistogram SmoothHistogram SmoothHistogram3D SmoothKernelDistribution SocialMediaData Socket SokalSneathDissimilarity Solve SolveAlways SolveDelayed Sort SortBy Sound SoundAndGraphics SoundNote SoundVolume Sow Space SpaceForm Spacer Spacings Span SpanAdjustments SpanCharacterRounding SpanFromAbove SpanFromBoth SpanFromLeft SpanLineThickness SpanMaxSize SpanMinSize SpanningCharacters SpanSymmetric SparseArray SpatialGraphDistribution Speak SpeakTextPacket SpearmanRankTest SpearmanRho Spectrogram SpectrogramArray Specularity SpellingCorrection SpellingDictionaries SpellingDictionariesPath SpellingOptions SpellingSuggestionsPacket Sphere SphereBox SphericalBesselJ SphericalBesselY SphericalHankelH1 SphericalHankelH2 SphericalHarmonicY SphericalPlot3D SphericalRegion SpheroidalEigenvalue SpheroidalJoiningFactor SpheroidalPS SpheroidalPSPrime SpheroidalQS SpheroidalQSPrime SpheroidalRadialFactor SpheroidalS1 SpheroidalS1Prime SpheroidalS2 SpheroidalS2Prime Splice SplicedDistribution SplineClosed SplineDegree SplineKnots SplineWeights Split SplitBy SpokenString Sqrt SqrtBox SqrtBoxOptions Square SquaredEuclideanDistance SquareFreeQ SquareIntersection SquaresR SquareSubset SquareSubsetEqual SquareSuperset SquareSupersetEqual SquareUnion SquareWave StabilityMargins StabilityMarginsStyle StableDistribution Stack StackBegin StackComplete StackInhibit StandardDeviation StandardDeviationFilter StandardForm Standardize StandbyDistribution Star StarGraph StartAsynchronousTask StartingStepSize StartOfLine StartOfString StartScheduledTask StartupSound StateDimensions StateFeedbackGains StateOutputEstimator StateResponse StateSpaceModel StateSpaceRealization StateSpaceTransform StationaryDistribution StationaryWaveletPacketTransform StationaryWaveletTransform StatusArea StatusCentrality StepMonitor StieltjesGamma StirlingS1 StirlingS2 StopAsynchronousTask StopScheduledTask StrataVariables StratonovichProcess StreamColorFunction StreamColorFunctionScaling StreamDensityPlot StreamPlot StreamPoints StreamPosition Streams StreamScale StreamStyle String StringBreak StringByteCount StringCases StringCount StringDrop StringExpression StringForm StringFormat StringFreeQ StringInsert StringJoin StringLength StringMatchQ StringPosition StringQ StringReplace StringReplaceList StringReplacePart StringReverse StringRotateLeft StringRotateRight StringSkeleton StringSplit StringTake StringToStream StringTrim StripBoxes StripOnInput StripWrapperBoxes StrokeForm StructuralImportance StructuredArray StructuredSelection StruveH StruveL Stub StudentTDistribution Style StyleBox StyleBoxAutoDelete StyleBoxOptions StyleData StyleDefinitions StyleForm StyleKeyMapping StyleMenuListing StyleNameDialogSettings StyleNames StylePrint StyleSheetPath Subfactorial Subgraph SubMinus SubPlus SubresultantPolynomialRemainders SubresultantPolynomials Subresultants Subscript SubscriptBox SubscriptBoxOptions Subscripted Subset SubsetEqual Subsets SubStar Subsuperscript SubsuperscriptBox SubsuperscriptBoxOptions Subtract SubtractFrom SubValues Succeeds SucceedsEqual SucceedsSlantEqual SucceedsTilde SuchThat Sum SumConvergence Sunday SuperDagger SuperMinus SuperPlus Superscript SuperscriptBox SuperscriptBoxOptions Superset SupersetEqual SuperStar Surd SurdForm SurfaceColor SurfaceGraphics SurvivalDistribution SurvivalFunction SurvivalModel SurvivalModelFit SuspendPacket SuzukiDistribution SuzukiGroupSuz SwatchLegend Switch Symbol SymbolName SymletWavelet Symmetric SymmetricGroup SymmetricMatrixQ SymmetricPolynomial SymmetricReduction Symmetrize SymmetrizedArray SymmetrizedArrayRules SymmetrizedDependentComponents SymmetrizedIndependentComponents SymmetrizedReplacePart SynchronousInitialization SynchronousUpdating Syntax SyntaxForm SyntaxInformation SyntaxLength SyntaxPacket SyntaxQ SystemDialogInput SystemException SystemHelpPath SystemInformation SystemInformationData SystemOpen SystemOptions SystemsModelDelay SystemsModelDelayApproximate SystemsModelDelete SystemsModelDimensions SystemsModelExtract SystemsModelFeedbackConnect SystemsModelLabels SystemsModelOrder SystemsModelParallelConnect SystemsModelSeriesConnect SystemsModelStateFeedbackConnect SystemStub Tab TabFilling Table TableAlignments TableDepth TableDirections TableForm TableHeadings TableSpacing TableView TableViewBox TabSpacings TabView TabViewBox TabViewBoxOptions TagBox TagBoxNote TagBoxOptions TaggingRules TagSet TagSetDelayed TagStyle TagUnset Take TakeWhile Tally Tan Tanh TargetFunctions TargetUnits TautologyQ TelegraphProcess TemplateBox TemplateBoxOptions TemplateSlotSequence TemporalData Temporary TemporaryVariable TensorContract TensorDimensions TensorExpand TensorProduct TensorQ TensorRank TensorReduce TensorSymmetry TensorTranspose TensorWedge Tetrahedron TetrahedronBox TetrahedronBoxOptions TeXForm TeXSave Text Text3DBox Text3DBoxOptions TextAlignment TextBand TextBoundingBox TextBox TextCell TextClipboardType TextData TextForm TextJustification TextLine TextPacket TextParagraph TextRecognize TextRendering TextStyle Texture TextureCoordinateFunction 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-/* https://github.com/jmblog/color-themes-for-highlightjs */
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-    Polymer('highlightjs-element', {
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-      ready: function() {
-        if (!this.text) {
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-
-<!--
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
--->
-
-<!--
-@group Polymer Core Elements
-
-The `core-ajax` element exposes `XMLHttpRequest` functionality.
-
-    <core-ajax
-        auto
-        url="http://gdata.youtube.com/feeds/api/videos/"
-        params='{"alt":"json", "q":"chrome"}'
-        handleAs="json"
-        on-core-response="{{handleResponse}}"></core-ajax>
- 
-With `auto` set to `true`, the element performs a request whenever
-its `url` or `params` properties are changed.
-
-Note: The `params` attribute must be double quoted JSON.
-
-You can trigger a request explicitly by calling `go` on the
-element.
-
-@element core-ajax
-@status beta
-@homepage github.io
--->
-
-<!--
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
--->
-<!--
-/**
- * @group Polymer Core Elements
- *
- * core-xhr can be used to perform XMLHttpRequests.
- *
- *     <core-xhr id="xhr"></core-xhr>
- *     ...
- *     this.$.xhr.request({url: url, params: params, callback: callback});
- *
- * @element core-xhr
- */
--->
-
-
-
-<polymer-element name="core-xhr" assetpath="../core-ajax/">
-
-  <template>
-
-    <style>
-      :host {
-        display: none;
-      }
-    </style>
-
-  </template>
-
-  <script>
-
-    Polymer('core-xhr', {
-
-      makeReadyStateHandler: function(xhr, callback) {
-        xhr.onreadystatechange = function() {
-          if (xhr.readyState == 4) {
-            callback && callback.call(null, xhr.response, xhr);
-          }
-        };
-      },
-
-      setRequestHeaders: function(xhr, headers) {
-        if (headers) {
-          for (var name in headers) {
-            xhr.setRequestHeader(name, headers[name]);
-          }
-        }
-      },
-
-      toQueryString: function(params) {
-        var r = [];
-        for (var n in params) {
-          var v = params[n];
-          n = encodeURIComponent(n);
-          r.push(v == null ? n : (n + '=' + encodeURIComponent(v)));
-        }
-        return r.join('&');
-      },
-
-      /**
-       * Sends a HTTP request to the server and returns the XHR object.
-       *
-       * @method request
-       * @param {Object} inOptions
-       *    @param {String} inOptions.url The url to which the request is sent.
-       *    @param {String} inOptions.method The HTTP method to use, default is GET.
-       *    @param {boolean} inOptions.sync By default, all requests are sent asynchronously. To send synchronous requests, set to true.
-       *    @param {Object} inOptions.params Data to be sent to the server.
-       *    @param {Object} inOptions.body The content for the request body for POST method.
-       *    @param {Object} inOptions.headers HTTP request headers.
-       *    @param {String} inOptions.responseType The response type. Default is 'text'.
-       *    @param {boolean} inOptions.withCredentials Whether or not to send credentials on the request. Default is false.
-       *    @param {Object} inOptions.callback Called when request is completed.
-       * @returns {Object} XHR object.
-       */
-      request: function(options) {
-        var xhr = new XMLHttpRequest();
-        var url = options.url;
-        var method = options.method || 'GET';
-        var async = !options.sync;
-        var params = this.toQueryString(options.params);
-        if (params && method == 'GET') {
-          url += (url.indexOf('?') > 0 ? '&' : '?') + params;
-        }
-        xhr.open(method, url, async);
-        if (options.responseType) {
-          xhr.responseType = options.responseType;
-        }
-        if (options.withCredentials) {
-          xhr.withCredentials = true;
-        }
-        this.makeReadyStateHandler(xhr, options.callback);
-        this.setRequestHeaders(xhr, options.headers);
-        xhr.send(method == 'POST' ? (options.body || params) : null);
-        if (!async) {
-          xhr.onreadystatechange(xhr);
-        }
-        return xhr;
-      }
-
-    });
-
-  </script>
-  
-</polymer-element>
-
-
-<polymer-element name="core-ajax" attributes="url handleAs auto params response method headers body contentType withCredentials" assetpath="../core-ajax/">
-
-  <script>
-
-    Polymer('core-ajax', {
-      /**
-       * Fired when a response is received.
-       * 
-       * @event core-response
-       */
- 
-      /**
-       * Fired when an error is received.
-       * 
-       * @event core-error
-       */
- 
-      /**
-       * Fired whenever a response or an error is received.
-       *
-       * @event core-complete
-       */
-
-      /**
-       * The URL target of the request.
-       * 
-       * @attribute url
-       * @type string
-       * @default ''
-       */
-      url: '',
-
-      /**
-       * Specifies what data to store in the `response` property, and
-       * to deliver as `event.response` in `response` events.
-       * 
-       * One of:
-       * 
-       *    `text`: uses `XHR.responseText`.
-       *    
-       *    `xml`: uses `XHR.responseXML`.
-       *    
-       *    `json`: uses `XHR.responseText` parsed as JSON.
-       *  
-       * @attribute handleAs
-       * @type string
-       * @default 'text'
-       */
-      handleAs: '',
-
-      /**
-       * If true, automatically performs an Ajax request when either `url` or `params` changes.
-       *
-       * @attribute auto
-       * @type boolean
-       * @default false
-       */
-      auto: false,
-
-      /**
-       * Parameters to send to the specified URL, as JSON.
-       *  
-       * @attribute params
-       * @type string (JSON)
-       * @default ''
-       */
-      params: '',
-
-      /**
-       * Returns the response object.
-       *
-       * @attribute response
-       * @type Object
-       * @default null
-       */
-      response: null,
-
-      /**
-       * The HTTP method to use such as 'GET', 'POST', 'PUT', or 'DELETE'.
-       * Default is 'GET'.
-       *
-       * @attribute method
-       * @type string
-       * @default ''
-       */
-      method: '',
-
-      /**
-       * HTTP request headers to send.
-       *
-       * Example:
-       *
-       *     <core-ajax 
-       *         auto
-       *         url="http://somesite.com"
-       *         headers='{"X-Requested-With": "XMLHttpRequest"}'
-       *         handleAs="json"
-       *         on-core-response="{{handleResponse}}"></core-ajax>
-       *  
-       * @attribute headers
-       * @type Object
-       * @default null
-       */
-      headers: null,
-
-      /**
-       * Optional raw body content to send when method === "POST".
-       *
-       * Example:
-       *
-       *     <core-ajax method="POST" auto url="http://somesite.com"
-       *         body='{"foo":1, "bar":2}'>
-       *     </core-ajax>
-       *  
-       * @attribute body
-       * @type Object
-       * @default null
-       */
-      body: null,
-
-      /**
-       * Content type to use when sending data.
-       *
-       * @attribute contentType
-       * @type string
-       * @default 'application/x-www-form-urlencoded'
-       */
-      contentType: 'application/x-www-form-urlencoded',
-
-      /**
-       * Set the withCredentials flag on the request.
-       * 
-       * @attribute withCredentials
-       * @type boolean
-       * @default false
-       */
-      withCredentials: false,
-      
-      ready: function() {
-        this.xhr = document.createElement('core-xhr');
-      },
-
-      receive: function(response, xhr) {
-        if (this.isSuccess(xhr)) {
-          this.processResponse(xhr);
-        } else {
-          this.error(xhr);
-        }
-        this.complete(xhr);
-      },
-
-      isSuccess: function(xhr) {
-        var status = xhr.status || 0;
-        return !status || (status >= 200 && status < 300);
-      },
-
-      processResponse: function(xhr) {
-        var response = this.evalResponse(xhr);
-        this.response = response;
-        this.fire('core-response', {response: response, xhr: xhr});
-      },
-
-      error: function(xhr) {
-        var response = xhr.status + ': ' + xhr.responseText;
-        this.fire('core-error', {response: response, xhr: xhr});
-      },
-
-      complete: function(xhr) {
-        this.fire('core-complete', {response: xhr.status, xhr: xhr});
-      },
-
-      evalResponse: function(xhr) {
-        return this[(this.handleAs || 'text') + 'Handler'](xhr);
-      },
-
-      xmlHandler: function(xhr) {
-        return xhr.responseXML;
-      },
-
-      textHandler: function(xhr) {
-        return xhr.responseText;
-      },
-
-      jsonHandler: function(xhr) {
-        var r = xhr.responseText;
-        try {
-          return JSON.parse(r);
-        } catch (x) {
-          return r;
-        }
-      },
-
-      urlChanged: function() {
-        if (!this.handleAs) {
-          var ext = String(this.url).split('.').pop();
-          switch (ext) {
-            case 'json':
-              this.handleAs = 'json';
-              break;
-          }
-        }
-        this.autoGo();
-      },
-
-      paramsChanged: function() {
-        this.autoGo();
-      },
-
-      autoChanged: function() {
-        this.autoGo();
-      },
-
-      // TODO(sorvell): multiple side-effects could call autoGo 
-      // during one micro-task, use a job to have only one action 
-      // occur
-      autoGo: function() {
-        if (this.auto) {
-          this.goJob = this.job(this.goJob, this.go, 0);
-        }
-      },
-
-      /**
-       * Performs an Ajax request to the specified URL.
-       *
-       * @method go
-       */
-      go: function() {
-        var args = this.xhrArgs || {};
-        // TODO(sjmiles): alternatively, we could force POST if body is set
-        if (this.method === 'POST') {
-          args.body = this.body || args.body;
-        }
-        args.params = this.params || args.params;
-        if (args.params && typeof(args.params) == 'string') {
-          args.params = JSON.parse(args.params);
-        }
-        args.headers = this.headers || args.headers || {};
-        if (args.headers && typeof(args.headers) == 'string') {
-          args.headers = JSON.parse(args.headers);
-        }
-        if (this.contentType) {
-          args.headers['content-type'] = this.contentType;
-        }
-        
-        args.withCredentials = this.withCredentials;
-        args.callback = this.receive.bind(this);
-        args.url = this.url;
-        args.method = this.method;
-        return args.url && this.xhr.request(args);
-      }
-
-    });
-
-  </script>
-
-</polymer-element>
-
-
-<polymer-element name="context-free-parser" attributes="url text data" assetpath="../core-doc-viewer/elements/">
-
-  <template>
-
-    <core-ajax url="{{url}}" response="{{text}}" auto=""></core-ajax>
-
-  </template>
-
-  <script id="test">
-
-    Polymer('context-free-parser', {
-
-      text: null,
-
-      textChanged: function() {
-
-        if (!this.text) {
-          return;
-        }
-
-        var text = this.text;
-        var top = {};
-        var classes = [];
-        var current = top;
-        var subCurrent = {};
-
-        var scriptDocCommentClause = '\\/\\*\\*([\\s\\S]*?)\\*\\/';
-        var htmlDocCommentClause = '<!--([\\s\\S]*?)-->';
-
-        // matches text between /** and */ inclusive and <!-- and --> inclusive
-        var docCommentRegex = new RegExp(scriptDocCommentClause + '|' + htmlDocCommentClause, 'g');
-
-        // acquire all script doc comments
-        var docComments = text.match(docCommentRegex) || [];
-
-        // each match represents a single block of doc comments
-        docComments.forEach(function(m) {
-          // unify line ends, remove all comment characters, split into individual lines
-          var lines = m.replace(/\r\n/g, '\n').replace(/^\s*\/\*\*|^\s*\*\/|^\s*\* ?|^\s*\<\!-\-|^s*\-\-\>/gm, '').split('\n');
-
-          // pragmas (@-rules) must occur on a line by themselves
-          var pragmas = [];
-          // filter lines whose first non-whitespace character is @ into the pragma list
-          // (and out of the `lines` array)
-          lines = lines.filter(function(l) {
-            var m = l.match(/\s*@([\w-]*) (.*)/);
-            if (!m) {
-              return true;
-            }
-            pragmas.push(m);
-          });
-
-          // collect all other text into a single block
-          var code = lines.join('\n');
-          
-          pragmas.forEach(function(m) {
-            var pragma = m[1], content = m[2];
-            switch (pragma) {
-
-              case 'class':
-              case 'element':
-                current = {
-                  name: content,
-                  description: code
-                };
-                classes.push(current);
-                break;
-              
-              case 'attribute':
-              case 'method':
-              case 'event':
-                subCurrent = {
-                  name: content,
-                  description: code
-                };
-                makePragma(current, pragma + 's', subCurrent);
-                break;
-
-              case 'default':
-              case 'type':
-                subCurrent[pragma] = content;
-                break;
-
-              default:
-                current[pragma] = content;
-                break;
-            }
-          });
-
-          // utility function, yay hoisting
-          function makePragma(object, pragma, content) {
-            var p$ = object;
-            var p = p$[pragma];
-            if (!p) {
-              p$[pragma] = p = [];
-            }
-            p.push(content);
-          }
-
-        });
-
-        if (classes.length === 0) {
-          classes.push({name: this.url.split('/').pop(), description: '**Undocumented**'});
-        }
-        this.data = { classes : classes };
-      },
-
-      dataChanged: function() {
-        this.fire('data-ready');
-      }
-
-    });
-
-  </script>
-
-</polymer-element>
-
-
-<!--
-
-Displays formatted source documentation scraped from input urls.
-
-@class core-doc-page
--->
-
-<polymer-element name="core-doc-page" attributes="data" assetpath="../core-doc-viewer/elements/">
-
-<!--
-
-Set url to add documentation from that location to the view.
-
-@attribute url
-@type String
--->
-
-  <template>
-
-    <style>/*
-
-Original style from softwaremaniacs.org (c) Ivan Sagalaev <Maniac@SoftwareManiacs.Org>
-
-*/
-
-.hljs {
-  display: block; padding: 0.5em;
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-      <div class="main" on-marked-js-highlight="{{hilight}}">
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-        <h1 style="font-size: 52px; color: #E91E63;">
-          {{data.name}}
-        </h1>
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-        <p>
-          <core-icon icon="tag" style="vertical-align: middle;"></core-icon>&nbsp;<a href="{{data | homepageFilter}}">Home Page</a>
-        </p>
-
-        <template if="{{data.description}}">
-          <section class="box top">
-            <div class="ntitle">Summary</div>
-            <marked-element text="{{data.description}}"></marked-element>
-          </section>
-        </template>
-
-        <template if="{{data.attributes.length}}">
-          <section class="box attribute-box">
-            <div class="ntitle" style="background-color: #FFAB40; color: white;">Attributes</div>
-            <template repeat="{{data.attributes}}">
-              <div class="details">
-                <div class="details-name">
-                  <p><code>{{name}}</code></p>
-                </div>
-                <div class="details-info">
-                  <p><code>{{type}}</code></p>
-                  <marked-element text="{{description}}"></marked-element>
-                </div>
-              </div>
-            </template>
-          </section>
-        </template>
-
-        <template if="{{data.events.length}}">
-          <section class="box event-box">
-            <div class="ntitle" style="color: white;">Events</div>
-            <template repeat="{{data.events}}">
-              <div class="details">
-                <div class="details-name">
-                  <p><code>{{name}}</code></p>
-                </div>
-                <div class="details-info">
-                  <marked-element text="{{description}}"></marked-element>
-                </div>
-              </div>
-            </template>
-          </section>
-        </template>
-
-        <template if="{{data.methods.length}}">
-          <section class="box method-box">
-            <div class="ntitle" style="color: white;">Methods</div>
-            <template repeat="{{data.methods}}">
-              <div class="details">
-                <div class="details-name">
-                  <p><code>{{name}}</code></p>
-                </div>
-                <div class="details-info">
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-                </div>
-              </div>
-            </template>
-          </section>
-        </template>
-
-      </div>
-
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-
-  </template>
-
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-
-    Polymer('core-doc-page', {
-
-      hilight: function(event, detail, sender) {
-        detail.code = hljs.highlightAuto(detail.code).value;
-      },
-
-      homepageFilter: function(data) {
-        if (!data) {
-          return '';
-        }
-        if (!data.homepage || data.homepage === 'github.io') {
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-
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-
-<!--
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
--->
-
-<!--
-`core-menu` is a selector which styles to looks like a menu.
-
-    <core-menu selected="0">
-      <core-item icon="settings" label="Settings"></core-item>
-      <core-item icon="dialog" label="Dialog"></core-item>
-      <core-item icon="search" label="Search"></core-item>
-    </core-menu>
-    
-When an item is selected the `core-selected` class is added to it.  The user can
-use the class to add more stylings to the selected item.
-
-    core-item.core-selected {
-      color: red;
-    }
-
-The `selectedItem` property references the selected item.
-
-    <core-menu selected="0" selectedItem="{{item}}">
-      <core-item icon="settings" label="Settings"></core-item>
-      <core-item icon="dialog" label="Dialog"></core-item>
-      <core-item icon="search" label="Search"></core-item>
-    </core-menu>
-
-    <div>selected label: {{item.label}}</div>
-
-The `core-select` event signals selection change.
-
-    <core-menu selected="0" on-core-select="{{selectAction}}">
-      <core-item icon="settings" label="Settings"></core-item>
-      <core-item icon="dialog" label="Dialog"></core-item>
-      <core-item icon="search" label="Search"></core-item>
-    </core-menu>
-
-    ...
-
-    selectAction: function(e, detail) {
-      if (detail.isSelected) {
-        var selectedItem = detail.item;
-        ...
-      }
-    }
-
-@group Polymer Core Elements
-@element core-menu
-@extends core-selector
--->
-
-<!--
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
--->
-<!--
-/**
- * @group Polymer Core Elements
- */
-/**
- * core-selector is used to manage a list of elements that can be selected.
- * The attribute "selected" indicates which item element is being selected.
- * The attribute "multi" indicates if multiple items can be selected at once.
- * Tapping on the item element would fire "core-activate" event. Use
- * "core-select" event to listen for selection changes.
- *
- * Example:
- *
- *     <core-selector selected="0">
- *       <div>Item 1</div>
- *       <div>Item 2</div>
- *       <div>Item 3</div>
- *     </core-selector>
- *
- * core-selector is not styled.  So one needs to use "core-selected" CSS
- * class to style the selected element.
- * 
- *     <style>
- *       .item.core-selected {
- *         background: #eee;
- *       }
- *     </style>
- *     ...
- *     <core-selector>
- *       <div class="item">Item 1</div>
- *       <div class="item">Item 2</div>
- *       <div class="item">Item 3</div>
- *     </core-selector>
- *
- * @element core-selector
- * @status stable
- * @homepage github.io
- */
-/**
- * Fired when an item's selection state is changed. This event is fired both
- * when an item is selected or deselected. The `isSelected` detail property
- * contains the selection state.
- * 
- * @event core-select
- * @param {Object} detail
- *   @param {boolean} detail.isSelected true for selection and false for deselection
- *   @param {Object} detail.item the item element
- */
-/**
- * Fired when an item element is tapped.
- * 
- * @event core-activate
- * @param {Object} detail
- *   @param {Object} detail.item the item element
- */
--->
-
-<!--
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
--->
-<!--
-/**
- * @group Polymer Core Elements
- *
- * The core-selection element is used to manage selection state. It has no
- * visual appearance and is typically used in conjuneciton with another element.
- * For example, <a href="core-selector.html">core-selector</a>
- * use a core-selection to manage selection.
- *
- * To mark an item as selected, call the select(item) method on 
- * core-selection. Notice that the item itself is an argument to this method.
- * The core-selection element manages selection state for any given set of
- * items. When an item is selected, the `core-select` event is fired.
- * The attribute "multi" indicates if multiple items can be selected at once.
- * 
- * Example:
- *
- *     <core-element name="selection-example">
- *        <template>
- *          <style>
- *            ::-webkit-distributed(> .selected) {
- *              font-weight: bold;
- *              font-style: italic;
- *            }
- *          </style>
- *          <ul on-tap="{{itemTapAction}}">
- *            <content></content>
- *          </ul>
- *          <core-selection id="selection" multi on-core-select="{{selectAction}}"></core-selection>
- *        </template>
- *        <script>
- *          Polymer('selection-example', {
- *            itemTapAction: function(e) {
- *              this.$.selection.select(e.target);
- *            },
- *            selectAction: function(e, detail) {
- *              detail.item.classList.toggle('selected', detail.isSelected);
- *            }
- *          });
- *        </script>
- *     </core-element>
- *
- *     <selection-example>
- *       <li>Red</li>
- *       <li>Green</li>
- *       <li>Blue</li>
- *     </selection-example>
- *
- * @element core-selection
- */
- /**
- * Fired when an item's selection state is changed. This event is fired both
- * when an item is selected or deselected. The `isSelected` detail property
- * contains the selection state.
- * 
- * @event core-select
- * @param {Object} detail
- *   @param {boolean} detail.isSelected true for selection and false for deselection
- *   @param {Object} detail.item the item element
- */
--->
-
-
-<polymer-element name="core-selection" attributes="multi" assetpath="../core-selection/">
-  <template>
-    <style>
-      :host {
-        display: none !important;
-      }
-    </style>
-  </template>
-  <script>
-    Polymer('core-selection', {
-      /**
-       * If true, multiple selections are allowed.
-       *
-       * @attribute multi
-       * @type boolean
-       * @default false
-       */
-      multi: false,
-      ready: function() {
-        this.clear();
-      },
-      clear: function() {
-        this.selection = [];
-      },
-      /**
-       * Retrieves the selected item(s).
-       * @method getSelection
-       * @returns Returns the selected item(s). If the multi property is true,
-       * getSelection will return an array, otherwise it will return 
-       * the selected item or undefined if there is no selection.
-      */
-      getSelection: function() {
-        return this.multi ? this.selection : this.selection[0];
-      },
-      /**
-       * Indicates if a given item is selected.
-       * @method isSelected
-       * @param {any} item The item whose selection state should be checked.
-       * @returns Returns true if `item` is selected.
-      */
-      isSelected: function(item) {
-        return this.selection.indexOf(item) >= 0;
-      },
-      setItemSelected: function(item, isSelected) {
-        if (item !== undefined && item !== null) {
-          if (isSelected) {
-            this.selection.push(item);
-          } else {
-            var i = this.selection.indexOf(item);
-            if (i >= 0) {
-              this.selection.splice(i, 1);
-            }
-          }
-          this.fire("core-select", {isSelected: isSelected, item: item});
-        }
-      },
-      /**
-       * Set the selection state for a given `item`. If the multi property
-       * is true, then the selected state of `item` will be toggled; otherwise
-       * the `item` will be selected.
-       * @method select
-       * @param {any} item: The item to select.
-      */
-      select: function(item) {
-        if (this.multi) {
-          this.toggle(item);
-        } else if (this.getSelection() !== item) {
-          this.setItemSelected(this.getSelection(), false);
-          this.setItemSelected(item, true);
-        }
-      },
-      /**
-       * Toggles the selection state for `item`.
-       * @method toggle
-       * @param {any} item: The item to toggle.
-      */
-      toggle: function(item) {
-        this.setItemSelected(item, !this.isSelected(item));
-      }
-    });
-  </script>
-</polymer-element>
-
-
-<polymer-element name="core-selector" attributes="selected multi valueattr selectedClass selectedProperty selectedAttribute selectedItem selectedModel selectedIndex notap target itemsSelector activateEvent" assetpath="../core-selector/">
-
-  <template>
-    <core-selection id="selection" multi="{{multi}}" on-core-select="{{selectionSelect}}"></core-selection>
-    <content id="items" select="*"></content>
-  </template>
-
-  <script>
-
-    Polymer('core-selector', {
-
-      /**
-       * Gets or sets the selected element.  Default to use the index
-       * of the item element.
-       *
-       * If you want a specific attribute value of the element to be
-       * used instead of index, set "valueattr" to that attribute name.
-       *
-       * Example:
-       *
-       *     <core-selector valueattr="label" selected="foo">
-       *       <div label="foo"></div>
-       *       <div label="bar"></div>
-       *       <div label="zot"></div>
-       *     </core-selector>
-       *
-       * In multi-selection this should be an array of values.
-       *
-       * Example:
-       *
-       *     <core-selector id="selector" valueattr="label" multi>
-       *       <div label="foo"></div>
-       *       <div label="bar"></div>
-       *       <div label="zot"></div>
-       *     </core-selector>
-       *
-       *     this.$.selector.selected = ['foo', 'zot'];
-       *
-       * @attribute selected
-       * @type Object
-       * @default null
-       */
-      selected: null,
-
-      /**
-       * If true, multiple selections are allowed.
-       *
-       * @attribute multi
-       * @type boolean
-       * @default false
-       */
-      multi: false,
-
-      /**
-       * Specifies the attribute to be used for "selected" attribute.
-       *
-       * @attribute valueattr
-       * @type string
-       * @default 'name'
-       */
-      valueattr: 'name',
-
-      /**
-       * Specifies the CSS class to be used to add to the selected element.
-       * 
-       * @attribute selectedClass
-       * @type string
-       * @default 'core-selected'
-       */
-      selectedClass: 'core-selected',
-
-      /**
-       * Specifies the property to be used to set on the selected element
-       * to indicate its active state.
-       *
-       * @attribute selectedProperty
-       * @type string
-       * @default ''
-       */
-      selectedProperty: '',
-
-      /**
-       * Specifies the property to be used to set on the selected element
-       * to indicate its active state.
-       *
-       * @attribute selectedProperty
-       * @type string
-       * @default 'active'
-       */
-      selectedAttribute: 'active',
-
-      /**
-       * Returns the currently selected element. In multi-selection this returns
-       * an array of selected elements.
-       * 
-       * @attribute selectedItem
-       * @type Object
-       * @default null
-       */
-      selectedItem: null,
-
-      /**
-       * In single selection, this returns the model associated with the
-       * selected element.
-       * 
-       * @attribute selectedModel
-       * @type Object
-       * @default null
-       */
-      selectedModel: null,
-
-      /**
-       * In single selection, this returns the selected index.
-       *
-       * @attribute selectedIndex
-       * @type number
-       * @default -1
-       */
-      selectedIndex: -1,
-
-      /**
-       * The target element that contains items.  If this is not set 
-       * core-selector is the container.
-       * 
-       * @attribute target
-       * @type Object
-       * @default null
-       */
-      target: null,
-
-      /**
-       * This can be used to query nodes from the target node to be used for 
-       * selection items.  Note this only works if the 'target' property is set.
-       *
-       * Example:
-       *
-       *     <core-selector target="{{$.myForm}}" itemsSelector="input[type=radio]"></core-selector>
-       *     <form id="myForm">
-       *       <label><input type="radio" name="color" value="red"> Red</label> <br>
-       *       <label><input type="radio" name="color" value="green"> Green</label> <br>
-       *       <label><input type="radio" name="color" value="blue"> Blue</label> <br>
-       *       <p>color = {{color}}</p>
-       *     </form>
-       * 
-       * @attribute itemSelector
-       * @type string
-       * @default ''
-       */
-      itemsSelector: '',
-
-      /**
-       * The event that would be fired from the item element to indicate
-       * it is being selected.
-       *
-       * @attribute activateEvent
-       * @type string
-       * @default 'tap'
-       */
-      activateEvent: 'tap',
-
-      /**
-       * Set this to true to disallow changing the selection via the
-       * `activateEvent`.
-       *
-       * @attribute notap
-       * @type boolean
-       * @default false
-       */
-      notap: false,
-
-      ready: function() {
-        this.activateListener = this.activateHandler.bind(this);
-        this.observer = new MutationObserver(this.updateSelected.bind(this));
-        if (!this.target) {
-          this.target = this;
-        }
-      },
-
-      get items() {
-        var nodes = this.target !== this ? (this.itemsSelector ? 
-            this.target.querySelectorAll(this.itemsSelector) : 
-                this.target.children) : this.$.items.getDistributedNodes();
-        return Array.prototype.filter.call(nodes || [], function(n) {
-          return n && n.localName !== 'template';
-        });
-      },
-
-      targetChanged: function(old) {
-        if (old) {
-          this.removeListener(old);
-          this.observer.disconnect();
-        }
-        if (this.target) {
-          this.addListener(this.target);
-          this.observer.observe(this.target, {childList: true});
-        }
-      },
-
-      addListener: function(node) {
-        node.addEventListener(this.activateEvent, this.activateListener);
-      },
-
-      removeListener: function(node) {
-        node.removeEventListener(this.activateEvent, this.activateListener);
-      },
-
-      get selection() {
-        return this.$.selection.getSelection();
-      },
-
-      selectedChanged: function() {
-        this.updateSelected();
-      },
-
-      updateSelected: function() {
-        this.validateSelected();
-        if (this.multi) {
-          this.clearSelection();
-          this.selected && this.selected.forEach(function(s) {
-            this.valueToSelection(s);
-          }, this);
-        } else {
-          this.valueToSelection(this.selected);
-        }
-      },
-
-      validateSelected: function() {
-        // convert to an array for multi-selection
-        if (this.multi && !Array.isArray(this.selected) && 
-            this.selected !== null && this.selected !== undefined) {
-          this.selected = [this.selected];
-        }
-      },
-
-      clearSelection: function() {
-        if (this.multi) {
-          this.selection.slice().forEach(function(s) {
-            this.$.selection.setItemSelected(s, false);
-          }, this);
-        } else {
-          this.$.selection.setItemSelected(this.selection, false);
-        }
-        this.selectedItem = null;
-        this.$.selection.clear();
-      },
-
-      valueToSelection: function(value) {
-        var item = (value === null || value === undefined) ? 
-            null : this.items[this.valueToIndex(value)];
-        this.$.selection.select(item);
-      },
-
-      updateSelectedItem: function() {
-        this.selectedItem = this.selection;
-      },
-
-      selectedItemChanged: function() {
-        if (this.selectedItem) {
-          var t = this.selectedItem.templateInstance;
-          this.selectedModel = t ? t.model : undefined;
-        } else {
-          this.selectedModel = null;
-        }
-        this.selectedIndex = this.selectedItem ? 
-            parseInt(this.valueToIndex(this.selected)) : -1;
-      },
-
-      valueToIndex: function(value) {
-        // find an item with value == value and return it's index
-        for (var i=0, items=this.items, c; (c=items[i]); i++) {
-          if (this.valueForNode(c) == value) {
-            return i;
-          }
-        }
-        // if no item found, the value itself is probably the index
-        return value;
-      },
-
-      valueForNode: function(node) {
-        return node[this.valueattr] || node.getAttribute(this.valueattr);
-      },
-
-      // events fired from <core-selection> object
-      selectionSelect: function(e, detail) {
-        this.updateSelectedItem();
-        if (detail.item) {
-          this.applySelection(detail.item, detail.isSelected);
-        }
-      },
-
-      applySelection: function(item, isSelected) {
-        if (this.selectedClass) {
-          item.classList.toggle(this.selectedClass, isSelected);
-        }
-        if (this.selectedProperty) {
-          item[this.selectedProperty] = isSelected;
-        }
-        if (this.selectedAttribute && item.setAttribute) {
-          if (isSelected) {
-            item.setAttribute(this.selectedAttribute, '');
-          } else {
-            item.removeAttribute(this.selectedAttribute);
-          }
-        }
-      },
-
-      // event fired from host
-      activateHandler: function(e) {
-        if (!this.notap) {
-          var i = this.findDistributedTarget(e.target, this.items);
-          if (i >= 0) {
-            var item = this.items[i];
-            var s = this.valueForNode(item) || i;
-            if (this.multi) {
-              if (this.selected) {
-                this.addRemoveSelected(s);
-              } else {
-                this.selected = [s];
-              }
-            } else {
-              this.selected = s;
-            }
-            this.asyncFire('core-activate', {item: item});
-          }
-        }
-      },
-
-      addRemoveSelected: function(value) {
-        var i = this.selected.indexOf(value);
-        if (i >= 0) {
-          this.selected.splice(i, 1);
-        } else {
-          this.selected.push(value);
-        }
-        this.valueToSelection(value);
-      },
-
-      findDistributedTarget: function(target, nodes) {
-        // find first ancestor of target (including itself) that
-        // is in nodes, if any
-        while (target && target != this) {
-          var i = Array.prototype.indexOf.call(nodes, target);
-          if (i >= 0) {
-            return i;
-          }
-          target = target.parentNode;
-        }
-      }
-    });
-  </script>
-</polymer-element>
-
-
-<polymer-element name="core-menu" extends="core-selector" noscript="" assetpath="../core-menu/">
-<template>
-
-  <style>/*
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-*/
-
-:host {
-  display: block;
-  margin: 12px;
-}
-</style>
-  
-  <shadow></shadow>
-
-</template>
-</polymer-element>
-
-<!--
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
--->
-
-<!--
-`core-item` is a simple line-item object: a label and/or an icon that can also 
-act as a link.
-
-Example:
-
-    <core-item icon="settings" label="Settings"></core-item>
-    
-To use as a link, set `href` property.
-
-Example:
-
-    <core-item icon="settings" label="Settings" href="/settings"></core-item>
-
-@group Polymer Core Elements
-@element core-item
-@homepage github.io
--->
-
-
-
-
-<polymer-element name="core-item" extends="core-theme-aware" attributes="label icon src href" assetpath="../core-item/">
-<template>
-
-  <style>/*
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-*/
-
-:host {
-  display: block;
-  height: 40px;
-  cursor: pointer;
-}
-
-:host(.core-dark-theme) {
-  color: #eee;
-}
-
-:host(.core-selected) {
-  font-weight: bold;
-}
-
-.item-container {
-  position: relative;
-  height: 100%;
-}
-
-.item-container > core-icon {
-  margin: 0 16px 0 4px;
-}
-
-/*@polyfill :host #label > a, #link */
-::content > a, #link {
-  position: absolute;
-  top: 0;
-  right: 0;
-  bottom: 0;
-  left: 0;
-}
-</style>
-  <style>/*
-Copyright 2013 The Polymer Authors. All rights reserved.
-Use of this source code is governed by a BSD-style
-license that can be found in the LICENSE file.
-*/
-
-[core-flow] {
-  display: -webkit-box !important;
-  display: -ms-flexbox !important;
-  display: -moz-flex !important;
-  display: -webkit-flex !important;
-  display: flex !important;
-}
-
-[core-flow=h] {
-  -webkit-box-orient: horizontal;
-  -ms-flex-direction: row;
-  -moz-flex-direction: row;
-  -webkit-flex-direction: row;
-  flex-direction: row;
-}
-
-[core-flow=h][core-reverse] {
-  -webkit-box-direction: reverse;
-  -ms-flex-direction: row-reverse;
-  -moz-flex-direction: row-reverse;
-  -webkit-flex-direction: row-reverse;
-  flex-direction: row-reverse;
-}
-
-[core-flow=v] {
-  -webkit-box-orient: vertical;
-  -ms-flex-direction: column;
-  -moz-flex-direction: column;
-  -webkit-flex-direction: column;
-  flex-direction: column;
-}
-
-[core-flow=v][core-reverse] {
-  -webkit-box-direction: reverse;
-  -ms-flex-direction: column-reverse;
-  -moz-flex-direction: column-reverse;
-  -webkit-flex-direction: column-reverse;
-  flex-direction: column-reverse;
-}
-
-[core-relative] {
-  position: relative;
-}
-
-[core-fit] {
-  position: absolute;
-  top: 0;
-  left: 0;
-  height: 100%;
-  width: 100%;
-}
-
-body[core-fit] {
-  margin: 0;
-}
-
-[core-flex] {
-  -webkit-box-flex: 1;
-  -ms-flex: 1;
-  -moz-flex: 1;
-  -webkit-flex: 1;
-  flex: 1;
-}
-
-[core-flex=1] {
-  -webkit-box-flex: 1;
-  -ms-flex: 1;
-  -moz-flex: 1;
-  -webkit-flex: 1;
-  flex: 1;
-}
-
-[core-flex=2] {
-  -webkit-box-flex: 2;
-  -ms-flex: 2;
-  -moz-flex: 2;
-  -webkit-flex: 2;
-  flex: 2;
-}
-
-[core-flex=3] {
-  -webkit-box-flex: 3;
-  -ms-flex: 3;
-  -moz-flex: 3;
-  -webkit-flex: 3;
-  flex: 3;
-}
-
-[core-flex=4] {
-  -webkit-box-flex: 4;
-  -ms-flex: 4;
-  -moz-flex: 4;
-  -webkit-flex: 4;
-  flex: 4;
-}
-
-[core-flex=5] {
-  -webkit-box-flex: 5;
-  -ms-flex: 5;
-  -moz-flex: 5;
-  -webkit-flex: 5;
-  flex: 5;
-}
-
-/* distributed elements */
-::content > [core-flex] {
-  -webkit-box-flex: 1;
-  -ms-flex: 1;
-  -moz-flex: 1;
-  -webkit-flex: 1;
-  flex: 1;
-}
-
-::content > [core-flex=1] {
-  -webkit-box-flex: 1;
-  -ms-flex: 1;
-  -moz-flex: 1;
-  -webkit-flex: 1;
-  flex: 1;
-}
-
-::content > [core-flex=2] {
-  -webkit-box-flex: 2;
-  -ms-flex: 2;
-  -moz-flex: 2;
-  -webkit-flex: 2;
-  flex: 2;
-}
-
-::content > [core-flex=3] {
-  -webkit-box-flex: 3;
-  -ms-flex: 3;
-  -moz-flex: 3;
-  -webkit-flex: 3;
-  flex: 3;
-}
-
-::content > [core-flex=4] {
-  -webkit-box-flex: 4;
-  -ms-flex: 4;
-  -moz-flex: 4;
-  -webkit-flex: 4;
-  flex: 4;
-}
-
-::content > [core-flex=5] {
-  -webkit-box-flex: 5;
-  -ms-flex: 5;
-  -moz-flex: 5;
-  -webkit-flex: 5;
-  flex: 5;
-}
-
-/* alignment in main axis */
-[justify=start] {
-  -webkit-box-pack: start;
-  -ms-flex-pack: start;
-  -moz-justify-content: flex-start;
-  -webkit-justify-content: flex-start;
-  justify-content: flex-start;
-}
-
-[core-justify=center] {
-  -webkit-box-pack: center;
-  -ms-flex-pack: center;
-  -moz-justify-content: center;
-  -webkit-justify-content: center;
-  justify-content: center;
-}
-
-[core-justify=end] {
-  -webkit-box-pack: end;
-  -ms-flex-pack: end;
-  -moz-justify-content: flex-end;
-  -webkit-justify-content: flex-end;
-  justify-content: flex-end;
-}
-
-[core-justify=between] {
-  -webkit-box-pack: justify;
-  -ms-flex-pack: justify;
-  -moz-justify-content: space-between;
-  -webkit-justify-content: space-between;
-  justify-content: space-between;
-}
-
-/* alignment in cross axis */
-[core-align=start] {
-  -webkit-box-align: start;
-  -ms-flex-align: start;
-  -moz-align-items: flex-start;
-  -webkit-align-items: flex-start;
-  align-items: flex-start;
-}
-
-[core-align=center] {
-  -webkit-box-align: center;
-  -ms-flex-align: center;
-  -moz-align-items: center;
-  -webkit-align-items: center;
-  align-items: center;
-}
-
-[core-align=end] {
-  -webkit-box-align: end;
-  -ms-flex-align: end;
-  -moz-align-items: flex-end;
-  -webkit-align-items: flex-end;
-  align-items: flex-end;
-}
-</style>
-  
-  <div class="item-container" core-flow="" core-align="center">
-  
-    <template if="{{icon || src}}">
-      <core-icon src="{{src}}" icon="{{icon}}"></core-icon>
-    </template>
-    
-    <span id="label" core-flex="" core-flow="" core-align="center">{{label}}<content></content></span>
-    
-    <template if="{{href}}">
-      <a id="link" href="{{href}}"></a>
-    </template>
-    
-  </div>
-
-</template>
-<script>
-
-  Polymer('core-item', {
-    
-    /**
-     * The URL of an image for the icon.
-     *
-     * @attribute src
-     * @type string
-     * @default ''
-     */
-
-    /**
-     * Specifies the icon from the Polymer icon set.
-     *
-     * @attribute icon
-     * @type string
-     * @default ''
-     */
-
-    /**
-     * Specifies a link target.
-     *
-     * Example:
-     *
-     *     <core-item icon="favorite" label="Favorite" href="http://www.polymer-project.org/"></core-item>
-     *
-     * If you want more control on the link, e.g. specify the target for where to
-     * open the linked document, you can put &lt;a> directly inside the item.
-     *
-     * Example:
-     *
-     *     <core-item icon="favorite" label="Favorite">
-     *       <a href="http://www.polymer-project.org/" target="_self"></a>
-     *     </core-item>
-     *
-     * @attribute href
-     * @type string
-     * @default ''
-     */
-
-    /**
-     * Specifies the label for the menu item.
-     *
-     * @attribute label
-     * @type string
-     * @default ''
-     */
-
-  });
-
-</script>
-</polymer-element>
-
-
-<!--
-@class core-doc-toc
--->
-
-<polymer-element name="core-doc-toc" attributes="data selected" assetpath="../core-doc-viewer/elements/">
-
-  <template>
-
-    <style>:host {
-  display: block;
-  border-right: 1px solid silver;
-}
-
-core-header-panel {
-  height: 100%;
-}
-
-core-toolbar {
-  background-color: #eeeeee;
-  /*
-  background-color: #E91E63;
-  color: white;
-  */
-}
-</style>
-
-    <core-header-panel mode="waterfall">
-
-      <core-toolbar theme="core-light-theme">
-        <core-icon-button icon="menu"></core-icon-button>
-        <span core-flex="">Topics</span>
-        <core-icon-button icon="search" on-tap="{{searchAction}}"></core-icon-button>
-      </core-toolbar>
-
-      <core-toolbar id="searchBar" style="background-color: #C2185B; position: absolute; top: 0; left: 0; right: 0; opacity: 0; display: none;" class="seamed" theme="core-dark-theme">
-        <core-icon-button icon="search"></core-icon-button>
-        <core-icon-button icon="close" on-tap="{{closeSearchAction}}"></core-icon-button>
-      </core-toolbar>
-
-      <core-menu selected="{{selected}}">
-        <template repeat="{{data}}">
-          <core-item><a href="#{{name}}">{{name}}</a></core-item>
-        </template>
-      </core-menu>
-
-    </core-header-panel>
-
-  </template>
-
-  <script>
-
-    Polymer('core-doc-toc', {
-
-      searchAction: function() {
-        this.$.searchBar.style.opacity = 1;
-        this.$.searchBar.style.display = '';
-      },
-
-      closeSearchAction: function() {
-        this.$.searchBar.style.opacity = 0;
-        this.$.searchBar.style.display = 'none';
-      }
-
-    });
-
-  </script>
-
-</polymer-element>
-
-
-
-<!--
-Displays formatted source documentation scraped from input urls.
-
-@class core-doc-viewer
--->
-
-<polymer-element name="core-doc-viewer" attributes="sources route url" assetpath="../core-doc-viewer/">
-
-  <template>
-
-    <style>
-
-      :host {
-        display: block;
-        position: relative;
-      }
-
-      core-doc-toc {
-        display: none;
-        width: 332px;
-        overflow-x: hidden;
-      }
-
-      core-doc-page {
-        height: 100%;
-      }
-
-    </style>
-
-    <context-free-parser url="{{url}}" on-data-ready="{{parserDataReady}}"></context-free-parser>
-
-    <template repeat="{{sources}}">
-      <context-free-parser url="{{}}" on-data-ready="{{parserDataReady}}"></context-free-parser>
-    </template>
-
-    <core-layout core-fit="">
-      <core-doc-toc id="toc" data="{{classes}}" selected="{{selected}}"></core-doc-toc>
-      <core-doc-page core-flex="" data="{{data}}"></core-doc-page>
-    </core-layout>
-
-  </template>
-
-  <script>
-
-    Polymer('core-doc-viewer', {
-
-      classes: [],
-      sources: [],
-
-      ready: function() {
-        window.addEventListener('hashchange', this.parseLocationHash.bind(this));
-        this.parseLocationHash();
-      },
-
-      parseLocationHash: function() {
-        this.route = window.location.hash.slice(1);
-      },
-
-      routeChanged: function() {
-        this.validateRoute();
-      },
-
-      validateRoute: function() {
-        if (this.route) {
-          this.classes.some(function(c) {
-            if (c.name === this.route) {
-              this.data = c;
-              this.route = '';
-              return;
-            }
-          }, this);
-        }
-      },
-
-      selectedChanged: function() { 
-        this.data = this.classes[this.selected];
-      },
-
-      parserDataReady: function(event) {
-        this.assimilateData(event.target.data);
-      },
-
-      assimilateData: function(data) {
-        this.classes = this.classes.concat(data.classes);
-        this.classes.sort(function(a, b) {
-          var na = a && a.name.toLowerCase(), nb = b && b.name.toLowerCase();
-          return (na < nb) ? -1 : (na == nb) ? 0 : 1;
-        });
-        if (!this.data && !this.route && this.classes.length) {
-          this.data = this.classes[0];
-        }
-        if (this.classes.length > 1) {
-          this.$.toc.style.display = 'block';
-        }
-        this.validateRoute();
-      }
-
-    });
-
-  </script>
-
-</polymer-element>
-
-
-<!--
-
-Implements the default landing page for Polymer components.
-
-`<core-component-page>` can render an information page for any component.
-Polymer components use this component in `index.html` to provide the standard landing page.
-
-`<core-component-page>` is _vulcanized_, which means it contains all it's dependencies baked in.
-Therefore, this component is intended to be used only by itself in a page.
-
-This *-dev package contains the raw source and the dependency manifest necessary
-to reconstruct `core-component-page\core-component-page.html` via vulcanize.
-
-`<core-component-page>` will set the page title automatically.
-
-@group Polymer Core Elements
-@element core-component-page
-
--->
-
-<polymer-element name="core-component-page" attributes="moduleName sources" assetpath="../core-component-page-dev/">
-
-  <template>
-
-    <style>/*
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-*/
-
-:host {
-  font-family: Arial, sans-serif;
-  height: 100vh;
-}
-
-h2 {
-  display: inline-block;
-  margin: 8px 6px;
-  vertical-align: middle;
-}
-
-.choiceB, .choiceC, .choiceD {
-  /* typography */
-  color: white;
-  /* font-size: 14px; */
-  font-size: 12px;
-  font-weight: bold;
-  text-decoration: none;
-  /* colors / effects */
-  background-color: #4285F4;
-  box-shadow: 0 1px 2px 0px rgba(0, 0, 0, 0.1);
-  box-shadow: 0 0 1px 0 rgba(0, 0, 0, 0.1);
-  border-radius: 2px;
-  cursor: pointer;
-  /* metrics */
-  display: inline-block;
-  padding: 4px 12px 5px 12px;
-  margin: 4px 0;
-}
-
-.appbar {
-  background-color: #E91E63;
-  color: white;
-}
-</style>
-
-    <core-layout flow="v"></core-layout>
-
-    <core-toolbar class="appbar">
-      <span>{{moduleName}}</span>
-      <a class="choiceC" target="_blank" href="../{{moduleName}}/demo.html">demo</a>
-    </core-toolbar>
-
-    <core-doc-viewer core-flex="" url="{{url}}" sources="{{sources}}"></core-doc-viewer>
-
-  </template>
-
-  <script>
-
-    Polymer('core-component-page', {
-
-      moduleName: '',
-      // TODO(sjmiles): needed this to force Object type for deserialization
-      sources: [],
-
-      ready: function() {
-        this.moduleName = this.moduleName || this.findModuleName();
-      },
-
-      moduleNameChanged: function() {
-        document.title = this.moduleName;
-        this.url = !this.sources.length && this.moduleName ? this.moduleName + '.html' : '';
-      },
-
-      findModuleName: function() {
-        var path = location.pathname.split('/');
-        var name = path.pop() || path.pop();
-        if (name.indexOf('.html') >= 0) {
-          name = path.pop();
-        }
-        return name || '';
-      }
-
-    });
-
-  </script>
-
-</polymer-element>
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\ No newline at end of file
diff --git a/bower_components/core-component-page/demo.html b/bower_components/core-component-page/demo.html
index 1f5a7b0..3c414d8 100644
--- a/bower_components/core-component-page/demo.html
+++ b/bower_components/core-component-page/demo.html
@@ -1,23 +1,23 @@
-<!doctype html>
-<!--
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE
-The complete set of authors may be found at http://polymer.github.io/AUTHORS
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS
--->
-<html>
-<head>
-
-  <script src="../platform/platform.js"></script>
-  <link rel="import" href="../polymer/polymer.html">
-  <link rel="import" href="core-component-page.html">
-
-</head>
-<body unresolved>
-
-  <core-component-page></core-component-page>
-
-</body>
-</html>
+<!doctype html>
+<!--
+Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE
+The complete set of authors may be found at http://polymer.github.io/AUTHORS
+The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS
+Code distributed by Google as part of the polymer project is also
+subject to an additional IP rights grant found at http://polymer.github.io/PATENTS
+-->
+<html>
+<head>
+
+  <script src="../webcomponentsjs/webcomponents.js"></script>
+  <link rel="import" href="../polymer/polymer.html">
+  <link rel="import" href="core-component-page.html">
+
+</head>
+<body unresolved>
+
+  <core-component-page></core-component-page>
+
+</body>
+</html>
diff --git a/bower_components/core-component-page/index.html b/bower_components/core-component-page/index.html
index 85106b5..294215a 100644
--- a/bower_components/core-component-page/index.html
+++ b/bower_components/core-component-page/index.html
@@ -10,8 +10,7 @@
 <html>
 <head>
 
-  <script src="../platform/platform.js"></script>
-  <link rel="import" href="../polymer/polymer.html">
+  <script src="../webcomponentsjs/webcomponents.js"></script>
   <link rel="import" href="../core-component-page/core-component-page.html">
 
 </head>
diff --git a/bower_components/cxx-html-doc-framework/.bower.json b/bower_components/cxx-html-doc-framework/.bower.json
index a9c4a8d..0eee4ff 100644
--- a/bower_components/cxx-html-doc-framework/.bower.json
+++ b/bower_components/cxx-html-doc-framework/.bower.json
@@ -1,6 +1,5 @@
 {
   "name": "cxx-html-doc-framework",
-  "version": "0.2.0",
   "description": "A set of custom HTML elements to make writing well-formatted C++ papers and ISO documents easier.",
   "main": "framework.html",
   "homepage": "https://github.com/cplusplus/html-doc-framework",
@@ -11,17 +10,18 @@
     "tests"
   ],
   "dependencies": {
-    "platform": "Polymer/platform#0.2.3",
-    "polymer": "Polymer/polymer#0.2.3",
-    "core-ajax": "Polymer/core-ajax#0.2.3"
+    "polymer": "Polymer/polymer#0.5.2",
+    "core-ajax": "Polymer/core-ajax#0.5.2"
   },
-  "_release": "0.2.0",
+  "version": "0.3.2",
+  "_release": "0.3.2",
   "_resolution": {
     "type": "version",
-    "tag": "0.2.0",
-    "commit": "65ef4d3372b41ee9f38dce9d3c3b50f153666e9d"
+    "tag": "0.3.2",
+    "commit": "9604bb1ff78b2f33fbcbcb941ea0fbae2e65d943"
   },
   "_source": "git://github.com/cplusplus/html-doc-framework.git",
-  "_target": "*",
-  "_originalSource": "cplusplus/html-doc-framework"
+  "_target": "^0.3.2",
+  "_originalSource": "cplusplus/html-doc-framework",
+  "_direct": true
 }
\ No newline at end of file
diff --git a/bower_components/cxx-html-doc-framework/README.md b/bower_components/cxx-html-doc-framework/README.md
index d8ef4c5..ec0d489 100644
--- a/bower_components/cxx-html-doc-framework/README.md
+++ b/bower_components/cxx-html-doc-framework/README.md
@@ -8,10 +8,14 @@ writing ISO C++ documents and papers.  To use it for your document, you should
 2. Install this package by running `bower install cplusplus/html-doc-framework` in the root directory of your document.
 3. Import this package into your main HTML file by adding two lines inside the `<head>` element:
 
-```HTML
-<script src="bower_components/platform/platform.js"></script>
-<link rel="import" href="bower_components/cxx-html-doc-framework/framework.html"/>
-```
+   ```HTML
+   <script src="bower_components/webcomponentsjs/webcomponents.js"></script>
+   <link rel="import" href="bower_components/cxx-html-doc-framework/framework.html"/>
+   ```
+
+4. Run an HTTP server (e.g. [`python3 -m http.server`](https://docs.python.org/3/library/http.server.html#http-server-cli) or [`http-server`](https://www.npmjs.org/package/http-server)) in the directory of your main HTML file, and preview through that instead of a `file:///` URL.
+
+I recommend the [Prince rendering engine](http://www.princexml.com/) for converting your HTML file to PDF. It has significantly better support for page-related features than any browser as of 2014.
 
 Before I can accept a contribution to this project, you'll need to sign the
 Contributor License Agreement at https://developers.google.com/open-source/cla/individual.
@@ -48,6 +52,10 @@ Wraps the title page of an ISO document. The title page takes a
 them) `CD`, `DTS`, `TS`, etc.  The title page recognizes several
 nested elements that describe the document.
 
+#### `<cxx-project-number>`
+
+The ISO project number for this TS or IS.  Find this on https://isocpp.org/std/status.
+
 #### `<cxx-docnum>`
 
 The D or N number for the document.
@@ -90,7 +98,8 @@ number, and formats and links the `id`.
 ### `<cxx-ednote>`
 
 An editor's note that won't appear in the final published document.
-This is formatted as a separate box on the side of the document.
+This is formatted as a separate box on the side of the document,
+unless it's marked with class="para", in which case it's formatted as a normal paragraph in a box.
 
 
 ### `<cxx-email>`
@@ -98,6 +107,11 @@ This is formatted as a separate box on the side of the document.
 Must contain an email address as text, and wraps it into an
 appropriate `mailto:` link.
 
+### `<w-br>`
+
+Introduces a soft line-break inside an otherwise-nowrap context. This works in
+Firefox and Prince, where <wbr> fails, in addition to other browsers.
+
 ### `<cxx-function>`
 
 Describes a C++ library function.  Several nested elements help
diff --git a/bower_components/cxx-html-doc-framework/base.css b/bower_components/cxx-html-doc-framework/base.css
index 6678344..8163372 100644
--- a/bower_components/cxx-html-doc-framework/base.css
+++ b/bower_components/cxx-html-doc-framework/base.css
@@ -15,19 +15,30 @@ limitations under the License.
 
 @page {
     margin: 10%;
-    @top-left { content: "© ISO/IEC"; font-size: 10pt; }
-    @top-right { content: string(docnum); font-weight: bold; font-size: 10pt; }
-    @bottom-left { content: string(current-section, last); font-size: 10pt; }
+}
+@page :left {
+    @top-left { content: string(docname); font-weight: bold; font-size: 10pt; }
+    @top-right { content: normal; }
+    @bottom-left { content: counter(page); font-size: 10pt; }
+    @bottom-right { content: "© ISO/IEC " string(pubyear) " — All rights reserved";
+                    font-size: 10pt; }
+}
+@page :right {
+    @top-left { content: normal; }
+    @top-right { content: string(docname); font-weight: bold; font-size: 10pt; }
+    @bottom-left { content: "© ISO/IEC " string(pubyear) " — All rights reserved";
+                   font-size: 10pt; }
     @bottom-right { content: counter(page); font-size: 10pt; }
 }
-cxx-titlepage { page: title; page-break-after: always; }
-@page title {
-    @top-left { content: "© ISO 2014 — All rights reserved"; }
+@page :first {
+    @top-left { content: normal; }
     @top-right { content: normal; }
     @bottom-left { content: normal; }
     @bottom-right { content: normal; }
 }
 
+body { margin: 0; }
+
 @media screen {
     body { max-width: 7in;
            /* Make room for paragraph numbers. */
@@ -36,22 +47,26 @@ cxx-titlepage { page: title; page-break-after: always; }
 
 @media print {
     html { font-size: 10pt; }
-    * /deep/ pre, * /deep/ code { font-size: 8pt; }
+    * /deep/ code { font-size: 80%; }
     /* Note that only Prince generates clickable links. */
     * /deep/ a[href] { text-decoration:none; }
 }
 
-/* Needed to make the <cxx-titlepage>'s vertical spacing work. */
-html, body {height: 100%}
+@media screen {
+    /* Needed to make the <cxx-titlepage>'s vertical spacing work.
+       For print see the <cxx-titlepage> definition. */
+    html, body {height: 100%}
+}
 
-cxx-docnum { string-set: docnum content(); }
+* /deep/ .docname { string-set: docname content(); }
+* /deep/ .pubyear { string-set: pubyear content(); }
 
-cxx-clause { page-break-before: always; }
+cxx-clause, cxx-foreword { page-break-before: always; }
 @media screen {
-    cxx-clause, cxx-toc { margin-top: 3em; }
+    cxx-clause, cxx-toc, cxx-foreword { margin-top: 3em; }
 }
 
-cxx-clause::shadow header { font-size: 150%; }
+cxx-clause::shadow header, cxx-foreword::shadow h1 { font-size: 150%; }
 cxx-toc::shadow h1 { font-size: 150%; }
 cxx-clause cxx-section::shadow header { font-size: 117%; }
 cxx-clause cxx-section cxx-section::shadow header { font-size: 100%; }
@@ -59,9 +74,11 @@ cxx-clause cxx-section cxx-section::shadow header { font-size: 100%; }
 [data-bookmark-label] { bookmark-label: attr(data-bookmark-label); }
 h1 { bookmark-level: 1; }
 cxx-toc::shadow h1 { bookmark-level: 2; }
-cxx-clause h1 { bookmark-level: 2; }
+cxx-clause h1, cxx-foreword h1 { bookmark-level: 2; }
 cxx-clause cxx-section h1 { bookmark-level: 3; }
 cxx-clause cxx-section cxx-section h1 { bookmark-level: 4; }
+/* The <h2> is a subtitle, which shouldn't get a PDF bookmark. */
+cxx-titlepage::shadow h2 { bookmark-level: none; }
 
 *::shadow .section-number { string-set: current-section "§ " content(); }
 
@@ -71,27 +88,58 @@ p:first-child, ul, ol {margin-top: 0}
 [para_num]::before { content: attr(para_num); float: left;
                      font-size: 70%; margin-left: -2.5em; width: 1.5em; text-align: right; }
 
-del {text-decoration: line-through; background-color: red; color: #8B0040;}
-ins {text-decoration: underline; background-color: yellow; color: #005100;}
+del {text-decoration: line-through; color: #8B0040;}
+ins {text-decoration: underline; color: #005100;}
 
 pre {
     margin-left: 1em;
     margin-top: .5em;
     margin-bottom: .5em;
 }
-pre > code { display: inline-block; }
 
+* /deep/ wbr::after {
+    white-space: normal;
+    content: '\200B';
+}
+* /deep/ code {
+    /* Make inline code avoid line wraps unless we override it with <wbr>. */
+    white-space: nowrap;
+}
+* /deep/ pre code {
+    /* Keep block-code wrapping according to its context. */
+    white-space: inherit;
+}
+
+* /deep/ table {
+    border-collapse: collapse;
+}
+* /deep/ td, th {
+    padding-left: .2em;
+    padding-right: .2em;
+    border: thin solid black;
+}
 
-/* Use an em-dash for the list bullet. */
-ul {
-    list-style: none;
-    /* Relative positioning on the 'ul' lets the absolutely-positioned
-       marker align relative to it.*/
-    position: relative;
+/* Use an em-dash for the list bullet.
+   'print' is a proxy for supporting ::marker. */
+@media screen {
+    ul {
+        list-style: none;
+        /* Relative positioning on the 'ul' lets the absolutely-positioned
+           marker align relative to it.*/
+        position: relative;
+    }
+    ul li:before {
+        content: "\2014";
+        position: absolute; left: 10px;
+    }
 }
-ul li:before {
-    content: "\2014";
-    position: absolute; left: 10px;
+@media print {
+    ul li::marker {
+        content: "\2014";
+    }
+    [is=cxx-table].list ul li::marker {
+        content: none;
+    }
 }
 
 /* This is here rather than inside elements/toc.html because browsers
diff --git a/bower_components/cxx-html-doc-framework/bower.json b/bower_components/cxx-html-doc-framework/bower.json
index f5dec24..084edd0 100644
--- a/bower_components/cxx-html-doc-framework/bower.json
+++ b/bower_components/cxx-html-doc-framework/bower.json
@@ -1,6 +1,5 @@
 {
   "name": "cxx-html-doc-framework",
-  "version": "0.2.0",
   "description": "A set of custom HTML elements to make writing well-formatted C++ papers and ISO documents easier.",
   "main": "framework.html",
   "homepage": "https://github.com/cplusplus/html-doc-framework",
@@ -11,8 +10,7 @@
     "tests"
   ],
   "dependencies": {
-    "platform": "Polymer/platform#0.2.3",
-    "polymer": "Polymer/polymer#0.2.3",
-    "core-ajax": "Polymer/core-ajax#0.2.3"
+    "polymer": "Polymer/polymer#0.5.2",
+    "core-ajax": "Polymer/core-ajax#0.5.2"
   }
 }
diff --git a/bower_components/cxx-html-doc-framework/clause.html b/bower_components/cxx-html-doc-framework/clause.html
index 4a44495..3fa7e8d 100644
--- a/bower_components/cxx-html-doc-framework/clause.html
+++ b/bower_components/cxx-html-doc-framework/clause.html
@@ -20,13 +20,26 @@
         this.super();
         var toc = document.querySelector('cxx-toc');
         if (toc) {
-          toc.clauses = document.querySelectorAll('cxx-clause');
+          toc.updateClauses();
         }
       }
       Polymer('cxx-clause', {
-        // Convenience function at the clause level, which gets called from <cxx-toc>.
+
+        // Convenience function at the clause level, which gets called
+        // from <cxx-toc>. If the clause is explicitly numbered, then
+        // this sets the clause_num to that value. Otherwise, the clause
+        // number is set to the argument clause_num. This returns
+        // 1 + the value set.
+        //
+        // Note that this will recursively set the section numbers for
+        // this clause.
         set_clause_num: function(clause_num) {
+          // If the author explicitly specified the clause number, don't
+          // use a different number.
+          if (this.number)
+            clause_num = Number(this.number)
           this.update_sec_nums(clause_num);
+          return clause_num + 1;
         },
 
         domReady: updateTocClauses,
diff --git a/bower_components/cxx-html-doc-framework/definition-section.html b/bower_components/cxx-html-doc-framework/definition-section.html
index 29158a1..a08dfcc 100644
--- a/bower_components/cxx-html-doc-framework/definition-section.html
+++ b/bower_components/cxx-html-doc-framework/definition-section.html
@@ -14,15 +14,17 @@
 -->
 
 <!--
-    Uses the HTML <table> content model, but automatically adds a number to
-    the <caption>.  Use this as <table is="cxx-table">, unlike the other custom
-    elements.
+    Use this as <dl is="cxx-definition-section"> to build the unusual "terms
+    and definitions" section that gets numbered as if each term is a section,
+    but doesn't make them show up in the table of contents.
 -->
 <polymer-element name="cxx-definition-section" extends="dl">
   <template>
     <style>
-      dt { font-weight: bold; }
-      dd { margin-left: 0; }
+      polyfill-next-selector { content: 'dt'; }
+      ::content dt { font-weight: bold; }
+      polyfill-next-selector { content: 'dd'; }
+      ::content dd { margin-left: 0; }
     </style>
 
     <content></content>
diff --git a/bower_components/cxx-html-doc-framework/definition-section.js b/bower_components/cxx-html-doc-framework/definition-section.js
index 917cb87..e56dc3f 100644
--- a/bower_components/cxx-html-doc-framework/definition-section.js
+++ b/bower_components/cxx-html-doc-framework/definition-section.js
@@ -43,7 +43,7 @@ limitations under the License.
                 dt.term_number = next_term_number++;
 
                 var template = importDocument.getElementById(
-                    'cxx-definition-section-term');
+                    'cxx-definition-section-term').cloneNode(true);
                 template.removeAttribute('id');
                 template.model = dt;
 
diff --git a/bower_components/cxx-html-doc-framework/ednote.html b/bower_components/cxx-html-doc-framework/ednote.html
index 04c4da8..dc348c2 100644
--- a/bower_components/cxx-html-doc-framework/ednote.html
+++ b/bower_components/cxx-html-doc-framework/ednote.html
@@ -16,12 +16,14 @@
 <polymer-element name="cxx-ednote" noscript>
   <template>
     <style>
-      :host { display: block; }
+      :host { display: none; }
+      :host-context(body.cxx-draft) { display: block; }
       aside { float: right; max-width: 40%;
               margin: 1ex;
               border: 1px dashed #888;
               padding: 1ex;
               background-color: #eee; }
+      :host(.para) aside { float: none; max-width: none; }
     </style>
     <aside><strong>Editor's note:</strong> <content></content></aside>
   </template>
diff --git a/bower_components/cxx-html-doc-framework/figure.html b/bower_components/cxx-html-doc-framework/figure.html
index ed9e51f..3d2dafb 100644
--- a/bower_components/cxx-html-doc-framework/figure.html
+++ b/bower_components/cxx-html-doc-framework/figure.html
@@ -22,7 +22,7 @@
     <style>
       :host { margin-left: auto; margin-right: auto; }
       figcaption { white-space: nowrap; text-align: center; }
-      /* @polyfill figcaption figcaption */
+      polyfill-next-selector { content: 'figcaption figcaption' }
       ::content figcaption { display: inline; }
 
     </style>
diff --git a/bower_components/cxx-html-doc-framework/footnote.html b/bower_components/cxx-html-doc-framework/footnote.html
index a2903e1..5d99677 100644
--- a/bower_components/cxx-html-doc-framework/footnote.html
+++ b/bower_components/cxx-html-doc-framework/footnote.html
@@ -30,13 +30,16 @@
   --><sup id="footnote-call-{{foot_num}}"><a href="#footnote-body-{{foot_num}}">{{foot_num}}</a></sup><aside class="footnote" id="footnote-body-{{foot_num}}"><span class="marker"><a href="#footnote-call-{{foot_num}}">{{foot_num}}</a>) </span><content/></aside></template>
 
   <script>
-(function() {
-    var footnote_count = 0;
-    Polymer('cxx-footnote', {
-        'created': function() {
-            this.foot_num = ++footnote_count;
-        },
-    })
-})();
+    (function() {
+      function renumberFootnotes() {
+        document.querySelectorAll('cxx-footnote').array().forEach(function(footnote, index) {
+          footnote.foot_num = index + 1;
+        });
+      }
+      Polymer('cxx-footnote', {
+        domReady: renumberFootnotes,
+        detached: renumberFootnotes,
+      });
+    })();
   </script>
 </polymer-element>
diff --git a/bower_components/cxx-html-doc-framework/foreword.html b/bower_components/cxx-html-doc-framework/foreword.html
new file mode 100644
index 0000000..18ec0b0
--- /dev/null
+++ b/bower_components/cxx-html-doc-framework/foreword.html
@@ -0,0 +1,85 @@
+<!-- Copyright 2015 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<!--
+This element is empty and auto-generates the necessary content.
+-->
+<polymer-element name="cxx-foreword">
+  <template>
+    <style>
+      :host { display: block; min-height: 100%; }
+      :host { page-break-before: always; page-break-after: always; min-height: 100vh; margin-bottom: 2em; }
+
+      :host-context(body.cxx-draft) :host { display: none; }
+    </style>
+    <section>
+      <h1>Foreword</h1>
+
+      <p>
+        ISO (the International Organization for Standardization) is a
+        worldwide federation of national standards bodies (ISO member
+        bodies). The work of preparing International Standards is
+        normally carried out through ISO technical committees. Each
+        member body interested in a subject for which a technical
+        committee has been established has the right to be represented
+        on that committee. International organizations, governmental
+        and non-governmental, in liaison with ISO, also take part in
+        the work. ISO collaborates closely with the International
+        Electrotechnical Commission (IEC) on all matters of
+        electrotechnical standardization.
+      </p>
+      <p>
+        The procedures used to develop this document and those
+        intended for its further maintenance are described in the
+        ISO/IEC Directives, Part 1. In particular the different
+        approval criteria needed for the different types of ISO
+        documents should be noted. This document was drafted in
+        accordance with the editorial rules of the ISO/IEC Directives,
+        Part 2.
+        <a href="http://www.iso.org/directives">www.iso.org/directives</a>
+      </p>
+      <p>
+        Attention is drawn to the possibility that some of the
+        elements of this document may be the subject of patent rights.
+        ISO shall not be held responsible for identifying any or all
+        such patent rights. Details of any patent rights identified
+        during the development of the document will be in the
+        Introduction and/or on the ISO list of patent declarations
+        received.
+        <a href="http://www.iso.org/patents">www.iso.org/patents</a>
+      </p>
+      <p>
+        Any trade name used in this document is information given for
+        the convenience of users and does not constitute an
+        endorsement.
+      </p>
+      <p>
+        For an explanation on the meaning of ISO specific terms and
+        expressions related to conformity assessment, as well as
+        information about ISO's adherence to the WTO principles in the
+        Technical Barriers to Trade (TBT) see the following URL:
+        <a href="http://www.iso.org/iso/home/standards_development/resources-for-technical-work/foreword.htm">Foreword - Supplementary information</a>
+      </p>
+      <p>
+        The committee responsible for this document is ISO/IEC JTC1.
+      </p>
+    </section>
+  </template>
+  <script>
+    Polymer({
+      title: "Foreword",
+    });
+  </script>
+</polymer-element>
diff --git a/bower_components/cxx-html-doc-framework/framework.html b/bower_components/cxx-html-doc-framework/framework.html
index e0a1f33..0e24d92 100644
--- a/bower_components/cxx-html-doc-framework/framework.html
+++ b/bower_components/cxx-html-doc-framework/framework.html
@@ -28,6 +28,7 @@
 <link rel="import" href="ref.html"/>
 <link rel="import" href="foreign-index.html"/>
 <link rel="import" href="titlepage.html"/>
+<link rel="import" href="foreword.html"/>
 <script src="include.js"></script>
 <link rel="import" href="email.html"/>
 <link rel="import" href="ednote.html"/>
@@ -39,3 +40,4 @@
 <link rel="import" href="range.html"/>
 <link rel="import" href="codeblock.html"/>
 <link rel="import" href="grammar.html"/>
+<link rel="import" href="weak-break.html"/>
diff --git a/bower_components/cxx-html-doc-framework/function.html b/bower_components/cxx-html-doc-framework/function.html
index 46f870a..62dc629 100644
--- a/bower_components/cxx-html-doc-framework/function.html
+++ b/bower_components/cxx-html-doc-framework/function.html
@@ -16,7 +16,7 @@
 <polymer-element name="cxx-function" constructor="CxxFunctionElement" noscript>
   <template>
     <style>
-      :host { display: block; }
+      :host { display: block; page-break-inside: avoid;}
       :host:not(:last-child) { margin-bottom: 3ex; }
       :host > dl { margin: 0; margin-left: 2em; }
       :host > pre { margin: 0; }
@@ -40,7 +40,7 @@
       :host {display:block; margin-top: .5em; margin-bottom: .5em;}
       dt { float: left; font-style: italic; font-weight: normal; padding-right: 1ex;}
       dd { margin-left: 0em; }
-      /* @polyfill dd > ul, dd > ol */
+      polyfill-next-selector { content: 'dd > ul, dd > ol' }
       ::content > ul, ::content > ol { clear: left; }
     </style>
     <dt>{{heading}}:</dt><dd><content></content></dd>
diff --git a/bower_components/cxx-html-doc-framework/publish.html b/bower_components/cxx-html-doc-framework/publish.html
index f49c995..8d0662a 100644
--- a/bower_components/cxx-html-doc-framework/publish.html
+++ b/bower_components/cxx-html-doc-framework/publish.html
@@ -13,10 +13,11 @@
 limitations under the License.
 -->
 
-<!-- This element creates a button that creates a standalone HTML version of
-     the current page in a new window so you can save it.
-     This will only work with the ShadowDOM polyfill, since you can't create
-     ShadowDOM without script.
+<!-- This element creates a button that creates a link to a standalone HTML
+     version of the current page.
+
+     This will only work with the ShadowDOM polyfill, but we'll eventually
+     implement support for native ShadowDOM.
 
      If the 'source' attribute is present, a "Sources at ..." comment
      will appear at the top of the result document.
@@ -26,7 +27,16 @@
     <style>
       :host {display: block;}
     </style>
-    <button on-click="{{publish}}">Publish to new window</button>
+    <template if="{{ !flattenedBlob }}">
+      <button on-click="{{publish}}" disabled?="{{ publishing }}">Publish</button>
+    </template>
+    <template if="{{ flattenedBlob }}">
+      <p>Published:</p>
+      <ul>
+        <li><a href="{{ flattenedBlob }}">Flattened document</a></li>
+        <li><a href="{{ sectionIndex }}">Section index, in json suitable for &lt;cxx-foreign-index></a></li>
+      </ul>
+    </template>
   </template>
   <script src="publish.js"></script>
 </polymer-element>
diff --git a/bower_components/cxx-html-doc-framework/publish.js b/bower_components/cxx-html-doc-framework/publish.js
index f27e6f9..74eb0cb 100644
--- a/bower_components/cxx-html-doc-framework/publish.js
+++ b/bower_components/cxx-html-doc-framework/publish.js
@@ -90,11 +90,14 @@ limitations under the License.
         inlineImages(doc.getElementsByTagName('img'));
 
         var copy = doc.cloneNode(true);
-        forEach(copy.querySelectorAll('cxx-publish-button'), function(node) {
-            node.remove();
-        });
-        forEach(copy.querySelectorAll('script'), function(node) {
-            node.remove();
+
+        // Remove elements that run code or don't contribute to the appearance
+        // of the page.
+        forEach(['cxx-publish-button', 'script', 'link[rel=import]'],
+                function(selector) {
+            forEach(copy.querySelectorAll(selector), function(node) {
+                node.remove();
+            });
         });
         forEach(copy.body.querySelectorAll('*'), function(node) {
             if (getComputedStyle(node).display === 'none') {
@@ -136,20 +139,47 @@ limitations under the License.
         });
     }
 
+    function buildSectionIndex(doc) {
+        var result = {};
+        doc.querySelectorAll('cxx-clause,cxx-section').array().forEach(function(section) {
+            if (!section.id) {
+                console.warn(section, 'is missing its id.');
+                return;
+            }
+            if (!section.sec_num || section.sec_num == '?') {
+                console.warn(section, 'is missing its number');
+                return;
+            }
+            result[section.id] = section.sec_num;
+        });
+        return result;
+    }
+
     Polymer('cxx-publish-button', {
+        publishing: false,
+        flattenedBlob: null,
         publish: function() {
+            if (this.publishing) {
+                return;
+            }
+            this.publishing = true;
             var copyPromise = cloneStaticAndInline(document);
             var source = '';
             if (this.source) {
-                var source = '<!-- Sources at ' + this.source + ' -->\n';
+                source = '<!-- Sources at ' + this.source + ' -->\n';
             }
+            var sectionIndex = buildSectionIndex(document);
             copyPromise.then(function(copy) {
                 var published = new Blob(['<!DOCTYPE html>\n',
                                           source,
                                           copy.documentElement.outerHTML],
                                          {type: 'text/html'});
-                window.open(URL.createObjectURL(published), '_blank');
-            });
-        }
+                this.flattenedBlob = URL.createObjectURL(published);
+                this.sectionIndex = encodeURI('data:application/json,' + JSON.stringify(sectionIndex));
+            }.bind(this)).catch(function(e) {
+                console.error(e);
+                this.publishing = false;
+            }.bind(this));
+        },
     });
 })();
diff --git a/bower_components/cxx-html-doc-framework/section.html b/bower_components/cxx-html-doc-framework/section.html
index 6309ef8..df23b70 100644
--- a/bower_components/cxx-html-doc-framework/section.html
+++ b/bower_components/cxx-html-doc-framework/section.html
@@ -14,18 +14,24 @@
 -->
 
 <!--
-    Recognizes attributes 'id' and 'title', but marking these as attributes
+    Sections auto-number themselves and their paragraphs. The chosen number can
+    be overridden by setting the 'number' attribute. A paragraph can also be
+    marked as a continuation of the previous paragraph (without its own number)
+    by giving it a 'cont' class.
+
+    Also recognizes attributes 'id' and 'title', but marking these as attributes
     cause problems for the ShadowDOM polyfill.
 -->
-<polymer-element name="cxx-section" constructor="CxxSectionElement">
+<polymer-element name="cxx-section" constructor="CxxSectionElement" attributes="number">
   <template>
     <style>
       :host { display: block; }
       :host:target {background-color: inherit;}
       :host:target > section > h1 {background-color: #fed;}
-      /* @polyfill header > h1 */
+      polyfill-next-selector { content: 'header > h1' }
       ::content h1 { display: inline; font-size: 100%; }
-      header { font-weight: bold; margin-top: 20px; margin-bottom: 20px; }
+      header { font-weight: bold; margin-top: 20px; margin-bottom: 20px;
+               page-break-inside: avoid; page-break-after: avoid; }
       header::after { clear:both; display: block; content: " "; height: 0 }
     </style>
 
diff --git a/bower_components/cxx-html-doc-framework/section.js b/bower_components/cxx-html-doc-framework/section.js
index 86efbef..2e7ecfd 100644
--- a/bower_components/cxx-html-doc-framework/section.js
+++ b/bower_components/cxx-html-doc-framework/section.js
@@ -30,7 +30,10 @@ limitations under the License.
             // Assume there aren't any elements between cxx-section levels.
             for (var child = this.firstChild; child; child = child.nextSibling) {
                 if (child instanceof CxxSectionElement) {
-                    child.update_sec_nums(this.sec_num + '.' + (child_index++));
+                    if (child.number)
+                        child_index = Number(child.number);
+                    child.update_sec_nums(this.sec_num + '.' + child_index);
+                    child_index++;
                 }
             }
         },
@@ -58,19 +61,22 @@ limitations under the License.
                  child = child.nextElementSibling) {
                 if (child instanceof CxxSectionElement)
                     return para_num;
-                else if (child instanceof HTMLParagraphElement &&
-                         !child.classList.contains('cont'))
-                    this.numberParagraph(para_num++, child);
+                else if (child instanceof HTMLParagraphElement && !child.classList.contains('cont'))
+                    para_num = this.numberParagraph(para_num, child);
                 else if (child instanceof CxxFunctionElement) {
-                    this.numberParagraph(para_num++, child);
+                    para_num = this.numberParagraph(para_num, child);
                     para_num = this.numberParagraphChildren(child, para_num);
                 } else if (child instanceof CxxFunctionAttributeElement)
-                    this.numberParagraph(para_num++, child);
+                    para_num = this.numberParagraph(para_num, child);
             }
             return para_num;
         },
 
         numberParagraph: function(number, element) {
+            // If the paragraph is explicitly numbered, use that number.
+            if (element.hasAttribute("number"))
+                number = Number(element.getAttribute("number"))
+
             var id = this.id + '.' + number;
             if (element.id) {
                 console.warn('Paragraph already has id:', element);
@@ -81,6 +87,7 @@ limitations under the License.
                 element.id = id;
             }
             element.setAttribute('para_num', number);
+            return number + 1
         }
     })
 })();
diff --git a/bower_components/cxx-html-doc-framework/table.html b/bower_components/cxx-html-doc-framework/table.html
index 48a34eb..7060b09 100644
--- a/bower_components/cxx-html-doc-framework/table.html
+++ b/bower_components/cxx-html-doc-framework/table.html
@@ -17,25 +17,46 @@
     Uses the HTML <table> content model, but automatically adds a number to
     the <caption>.  Use this as <table is="cxx-table">, unlike the other custom
     elements.
+
+    With class="list", the table represents a list, which will be organized
+    into the number of columns set by the [columns] attribute.
 -->
-<polymer-element name="cxx-table" extends="table" constructor="CxxTableElement">
+<polymer-element name="cxx-table" extends="table" constructor="CxxTableElement" attributes="columns">
   <template>
     <style>
       :host { margin-left: auto; margin-right: auto;
               border-collapse: collapse;
               border: thin solid black; }
       caption { white-space: nowrap; }
-      /* @polyfill caption caption */
+      polyfill-next-selector { content: 'caption caption' }
       ::content caption { display: inline; }
 
-      th, td { border-style: solid none; border-color: black;
-               border-width: thin;
-               padding: 0 0.25em; }
-      :host(.column-rules) th, :host(.column-rules) td {
-          border-left-style: solid; border-right-style: solid; }
-      th { border-bottom: double medium; }
-      :host(.center) td { text-align: center; }
-      :host(.list) td { border: none; }
+      polyfill-next-selector { content: 'th, td' }
+      ::content th, ::content td {
+        border-style: solid none; border-color: black;
+        border-width: thin;
+        padding: 0 0.25em; }
+
+      polyfill-next-selector { content: ':host(.column-rules) th, :host(.column-rules) td' }
+      :host(.column-rules) ::content th,
+      :host(.column-rules) ::content td {
+          border-left-style: solid;  border-right-style: solid;}
+
+      polyfill-next-selector { content: 'th' }
+      ::content th { border-bottom: double medium; }
+      polyfill-next-selector { content: ':host(.single-border) th' }
+      :host(.single-border) ::content th { border-bottom: solid thin; }
+
+      polyfill-next-selector { content: ':host(.center) td' }
+      :host(.center) ::content td { text-align: center; }
+
+      polyfill-next-selector { content: ':host(.list) td' }
+      :host(.list) ::content td { border: none; vertical-align: top; }
+
+      polyfill-next-selector { content: ':host(.list) ul' }
+      :host(.list) ::content ul { padding-left: 0; margin: 0;}
+      polyfill-next-selector { content: ':host(.list) ul li::before' }
+      :host(.list) ::content ul li::before { content: '';}
     </style>
 
     <caption>Table {{table_num}} — <wbr><content select="caption"></content></caption>
@@ -49,7 +70,39 @@
         });
       }
       Polymer('cxx-table', {
-        domReady: renumberTables,
+        arrangeColumns: function() {
+          // Balance list-tables so we don't have to do it manually.  I tried
+          // using CSS columns, but the appearance isn't as nice.
+          if (this.classList.contains('list')) {
+            // Set ARIA role so screenreaders go straight to the list.
+            this.setAttribute('role', 'presentation');
+
+            // Avoid messing with tables that are manually formatted.
+            if (this.rows.length == 1 &&
+                this.rows[0].cells.length == 1 &&
+                this.rows[0].cells[0].firstElementChild instanceof HTMLUListElement) {
+              var tr = this.rows[0];
+              var elems = tr.querySelectorAll('li').array();
+              tr.cells[0].remove();
+              var rows = Math.ceil(elems.length / this.columns);
+              for (var column = 0; column < this.columns; column++) {
+                var td = document.createElement('td');
+                tr.appendChild(td);
+                var ul = document.createElement('ul');
+                td.appendChild(ul);
+                for (var row = 0; row < rows; row++) {
+                  var index = column*rows + row;
+                  if (index < elems.length)
+                    ul.appendChild(elems[index]);
+                }
+              }
+            }
+          }
+        },
+        domReady: function() {
+          renumberTables.apply(this);
+          this.arrangeColumns();
+        },
         detached: renumberTables,
       });
     })();
diff --git a/bower_components/cxx-html-doc-framework/titlepage.html b/bower_components/cxx-html-doc-framework/titlepage.html
index 3931772..9ec7cf0 100644
--- a/bower_components/cxx-html-doc-framework/titlepage.html
+++ b/bower_components/cxx-html-doc-framework/titlepage.html
@@ -17,54 +17,168 @@
 Has children: cxx-docnum, time[pubdate], cxx-editor, cxx-revises,
 and <h1> for the title.
 
-The 'stage' attribute currently can only be "draft", but I'll extend this to
-support other TS and IS stages as we need them.
+The document stage can be set in two ways:
+  1. Add a 'cxx-draft', 'cxx-pdts', or `cxx-dts' class to the <body> element.
+  2. Set the <cxx-titlepage stage> attribute to 'draft', 'pdts', or `dts`.
+Each will be propagated to the other.
+We'll add more stages as our documents get to them.
 
 cxx-titlepage sets the document title based on its <h1> child.
 -->
 <polymer-element name="cxx-titlepage" attributes="stage">
   <template>
     <style>
-      :host { display: block; min-height: 100%; }
+      :host, .page { display: block; min-height: 100%; }
+      .page { page-break-before: always; page-break-after: always; min-height: 100vh; margin-bottom: 2em; }
+      @media print {
+        /* Using an exact height for printed documents works around a bug in
+           Prince that breaks footnotes when the html/body height is set to
+           100%. */
+        .page { height: 8.8in; }
+      }
 
       /* position:relative on :host makes position:absolute on its children work
          relative to :host's bounds. */
-      :host { position: relative; }
-      table { position: absolute; right: 0; top: 0; }
-      h1 { position: absolute; top: 40%; }
-      p.warning { position: absolute; bottom: 5%; }
+      .page { position: relative; }
+      table td, table th { border: none; }
 
-      h1 {text-align: center;}
+      :host-context(body.cxx-draft) .header { position: absolute; right: 0; top: 0; }
+      :host-context(body.cxx-draft) h1 { position: absolute; top: 40%; text-align: center; }
+      :host-context(body.cxx-draft) p.warning { position: absolute; bottom: 5%; }
+
+      :host-context(body.cxx-pdts, body.cxx-dts, body.cxx-ts) .header { position: absolute; right: 0; top: 0; text-align: right; }
+      :host-context(body.cxx-pdts, body.cxx-dts, body.cxx-ts) .header ::content cxx-docnum { font-size: 150%; }
+      :host-context(body.cxx-pdts, body.cxx-dts, body.cxx-ts) .header cxx-docnum { font-size: 150%; }
+      :host-context(body.cxx-pdts, body.cxx-dts, body.cxx-ts) hgroup { position: absolute; top: 30%; }
+      :host-context(body.cxx-pdts, body.cxx-dts, body.cxx-ts) hgroup * { margin: 0; }
+      :host-context(body.cxx-pdts, body.cxx-dts, body.cxx-ts) hgroup h1 { font-size: 150%; font-weight: bold; }
+      :host-context(body.cxx-pdts, body.cxx-dts, body.cxx-ts) hgroup h2 { font-size: 100%; font-weight: normal; }
+      :host-context(body.cxx-pdts, body.cxx-dts, body.cxx-ts) .footer { position: absolute; left: 0; bottom: 5%; }
+      :host-context(body.cxx-pdts, body.cxx-dts, body.cxx-ts) figure { border: #111 solid 1px; padding: 10px; margin-left: auto; margin-right: auto; }
+      :host-context(body.cxx-pdts, body.cxx-dts, body.cxx-ts) figcaption { text-align: center; font-weight: bold; }
+      :host-context(body.cxx-pdts, body.cxx-dts, body.cxx-ts) .warning { position: absolute; bottom: 20%; }
+      :host-context(body.cxx-pdts, body.cxx-dts, body.cxx-ts) .copyright address { font-style: normal; margin-left: 2em; }
+      :host-context(body.cxx-pdts, body.cxx-dts, body.cxx-ts) .copyright address a { color: inherit; text-decoration: inherit; }
 
       th { text-align: left; vertical-align: top; }
     </style>
-    <table>
-      <template if="{{docnum}}">
-        <tr><th>Document Number:</th><td><content select="cxx-docnum"/></td></tr>
-      </template>
-      <template if="{{pubdate}}">
-        <tr><th>Date:</th><td><content select="time[pubdate]"/></td></tr>
-      </template>
-      <template if="{{revises}}">
-        <tr><th>Revises:</th><td><content select="cxx-revises"/></td></tr>
-      </template>
-      <template if="{{editor}}">
-        <tr><th>Editor:</th><td><content select="cxx-editor"/></td></tr>
-      </template>
-    </table>
-    <h1>{{title_prefix}}, {{title}}</h1>
     <template if="{{stage == 'draft'}}">
-      <p class="warning"><strong>Note: this is an early draft. It’s known to be
-      incomplet and incorrekt, and it has lots of b<span
-      style="margin-left: -1.2pt; margin-right: 1pt">a</span>d<span
-      style="width:1.5em"> </span>for<span
-      style="margin-left:-3pt; margin-right:0.6pt">mat</span>ti<span
-      style="position:relative; top:-0.15ex">n</span>g.</strong></p>
+      <div class="page">
+        <table class="header">
+          <template if="{{docnum}}">
+            <tr><th>Document Number:</th><td><content select="cxx-docnum"></content></td></tr>
+          </template>
+          <template if="{{hasPubdate}}">
+            <tr><th>Date:</th><td><time pubdate><span class="pubyear">{{pubyear}}</span>-{{pubmonth}}-{{pubday}}</time></td></tr>
+          </template>
+          <template if="{{revises}}">
+            <tr><th>Revises:</th><td><content select="cxx-revises"></content></td></tr>
+          </template>
+          <template if="{{editor}}">
+            <tr><th>Editor:</th><td><content select="cxx-editor"></content></td></tr>
+          </template>
+        </table>
+        <h1>Working Draft, {{title}}</h1>
+        <p class="warning"><strong>Note: this is an early draft. It’s known to be
+        incomplet and incorrekt, and it has lots of b<span
+        style="margin-left: -1.2pt; margin-right: 1pt">a</span>d<span
+        style="width:1.5em"> </span>for<span
+        style="margin-left:-3pt; margin-right:0.6pt">mat</span>ti<span
+        style="position:relative; top:-0.15ex">n</span>g.</strong></p>
+      </div>
+    </template>
+
+    <template if="{{stage == 'pdts' || stage == 'dts' || stage == 'ts'}}">
+      <div class="page">
+        <div class="header">
+          <template if="{{stage == 'pdts' || stage == 'dts'}}">
+            <strong>ISO/IEC JTC1 SC22 WG21 <content select="cxx-docnum"/></content></strong><br/>
+            Date: <time pubdate><span class="pubyear">{{pubyear}}</span>-{{pubmonth}}-{{pubday}}</time><br/>
+            <template if="{{stage == 'pdts'}}">
+              ISO/IEC PDTS <content select="cxx-project-number"></content><br/>
+            </template>
+            <template if="{{stage == 'dts'}}">
+              ISO/IEC DTS <content select="cxx-project-number"></content><br/>
+            </template>
+          </template>
+          <template if="{{stage == 'ts'}}">
+            <strong class="docname">ISO/IEC <content select="cxx-project-number"></content>:<span class="pubyear">{{pubyear}}</span></strong><br/>
+          </template>
+          ISO/IEC JTC1 SC22 WG21<br/>
+          Secretariat: ANSI
+        </div>
+        <hgroup>
+          <h1>Programming Languages — {{title}}</h1>
+          <template if="{{title_fr}}">
+            <h2>Langages de programmation — {{title_fr}}</h2>
+          </template>
+        </hgroup>
+        <figure class="warning">
+          <figcaption>Warning</figcaption>
+          <p>This document is not an ISO International Standard. It is distributed for review and comment. It is
+          subject to change without notice and may not be referred to as an International Standard.
+          </p>
+          <p>Recipients of this draft are invited to submit, with their comments, notification of any relevant
+          patent rights of which they are aware and to provide supporting documentation.</p>
+        </figure>
+        <div class="footer">
+          <template if="{{stage == 'pdts'}}">
+            Document type: Proposed Draft Technical Specification<br/>
+            Document stage: (30) Committee<br/>
+          </template>
+          <template if="{{stage == 'dts'}}">
+            Document type: Draft Technical Specification<br/>
+            Document stage: (40) Enquiry<br/>
+          </template>
+          <template if="{{stage == 'ts'}}">
+            Document type: Technical Specification<br/>
+            Document stage: (60) Publication<br/>
+          </template>
+          Document language: E
+        </div>
+      </div>
+      <div class="page">
+        <figure class="copyright">
+          <p>© ISO {{pubyear}}</p>
+          <p>
+            All rights reserved. Unless otherwise specified, no part
+            of this publication may be reproduced or utilized
+            otherwise in any form or by any means, electronic or
+            mechanical, including photocopying, or posting on the
+            internet or an intranet, without prior written permission.
+            Permission can be requested from either ISO at the address
+            below or ISO's member body in the country of the requester.
+          </p>
+          <address>
+            ISO copyright office<br>
+            Case postale 56 · CH-1211 Geneva 20<br>
+            Tel. + 41 22 749 01 11<br>
+            Fax + 41 22 749 09 47<br>
+            E-mail <a href="mailto:copyright@iso.org">copyright@iso.org</a><br>
+            Web <a href="http://www.iso.org">www.iso.org</a>
+          </address>
+          <p>Published in Switzerland.</p>
+        </figure>
+      </div>
+    </template>
+
+    <template if="{{!completedDomReady}}">
+      <!--
+        Work around
+        https://github.com/webcomponents/webcomponentsjs/issues/112 by
+        making sure every child element is included in the shadow dom until
+        we've extracted its information.
+      -->
+      <content></content>
     </template>
   </template>
   <script src="titlepage.js"></script>
 </polymer-element>
-<polymer-element name="cxx-docnum" noscript>
+<polymer-element name="cxx-project-number" noscript>
+  <!-- Find your project number at https://isocpp.org/std/status. -->
+  <template><content></content></template>
+</polymer-element>
+<polymer-element name="cxx-docnum" noscript class="docname">
   <template><content></content></template>
 </polymer-element>
 <polymer-element name="cxx-editor" noscript>
diff --git a/bower_components/cxx-html-doc-framework/titlepage.js b/bower_components/cxx-html-doc-framework/titlepage.js
index e605aa1..e86a7c8 100644
--- a/bower_components/cxx-html-doc-framework/titlepage.js
+++ b/bower_components/cxx-html-doc-framework/titlepage.js
@@ -16,27 +16,90 @@ limitations under the License.
 (function() {
     Polymer('cxx-titlepage', {
         // Default properties
+        projectNumber: null,
         docnum: null,
-        pubdate: null,
+        hasPubdate: false,
         editor: null,
         revises: null,
         title: null,
+        stage: null,
 
-        created: function() {
+        computeStage: function() {
+            var stages = ['draft', 'pdts', 'dts', 'ts'];
+            var presentStages = stages.filter(function(stage) {
+                return document.body.classList.contains('cxx-' + stage);
+            });
+            if (presentStages.length == 0) {
+                if (!this.stage) {
+                    console.error('Couldn\'t find a document stage in body.classList:', document.body.classList);
+                } else if (stages.indexOf(this.stage) == -1) {
+                    console.error('Unexpected stage: ' + this.stage);
+                } else {
+                    document.body.classList.add('cxx-' + this.stage);
+                }
+            } else if (presentStages.length > 1) {
+                console.error('Found multiple document stages in body.classList:', presentStages);
+            } else {
+                if (this.stage) {
+                    console.warn('Document stage set on both <body> ("' + presentStages[0] +
+                                 '") and <cxx-titlepage> ("' + this.stage + '")');
+                }
+                this.stage = presentStages[0];
+            }
+        },
+
+        addISOSections: function() {
+                if (this.stage !== 'ts') {
+                    // Only include the ISO requirements in the
+                    // document sent for publication.
+                    return;
+                }
+                var toc = document.querySelector('cxx-toc');
+                if (toc) {
+                    var foreword = document.createElement('cxx-foreword');
+                    foreword.id = 'foreword';
+                    document.body.insertBefore(foreword, toc.nextSibling);
+                }
+        },
+
+        domReady: function() {
+            this.projectNumber = this.querySelector('cxx-project-number');
             this.docnum = this.querySelector('cxx-docnum');
-            this.pubdate = this.querySelector('time[pubdate]');
+            var pubdateElem = this.querySelector('time[pubdate]');
+            this.hasPubdate = !!pubdateElem;
+            if (pubdateElem) {
+                var pubdate = pubdateElem.textContent.split('-');
+                this.pubyear = pubdate[0];
+                this.pubmonth = pubdate[1];
+                this.pubday = pubdate[2];
+            }
             this.editor = this.querySelector('cxx-editor');
             this.revises = this.querySelector('cxx-revises');
-            this.title = this.querySelector('h1').textContent;
-            this.stage = this.getAttribute('stage');
+
+            var title = this.querySelector('h1:lang(en)') || this.querySelector('h1');
+            if (title) {
+                this.title = title.textContent;
+            }
+            this.title_fr = this.querySelector('h2:lang(fr)');
+            if (this.title_fr) {
+                this.title_fr = this.title_fr.textContent;
+            }
+
+            this.computeStage();
+            var stage_suffix = '';
             if (this.stage == 'draft') {
-                this.title_prefix = "Working Draft";
-            } else {
-                console.error('Unexpected stage: ' + this.stage);
+                stage_suffix = ", Working Draft";
+            } else if (this.stage == 'pdts') {
+                stage_suffix = ", PDTS"
+            } else if (this.stage == 'dts') {
+                stage_suffix = ", DTS"
             }
             if (this.title) {
-                document.title = this.title + ', ' + this.title_prefix;
+                document.title = this.title + stage_suffix;
             }
+
+            this.addISOSections();
+            this.completedDomReady = true;
         },
     })
 })();
diff --git a/bower_components/cxx-html-doc-framework/toc.html b/bower_components/cxx-html-doc-framework/toc.html
index 42dd377..bdd044a 100644
--- a/bower_components/cxx-html-doc-framework/toc.html
+++ b/bower_components/cxx-html-doc-framework/toc.html
@@ -40,7 +40,7 @@ <h1>Contents</h1>
         <template if="{{sections.length > 0}}">
           <ol>
             <template repeat="{{sections}}">
-              <li><span class="marker">{{elem.sec_num}}</span><a href="#{{elem.id}}">{{title.textContent}}</a><template bind="" ref="hierarchy"
+              <li><template if="{{elem.sec_num}}"><span class="marker">{{elem.sec_num}}</span></template><a href="#{{elem.id}}">{{title}}</a><template bind="" ref="hierarchy"
               ></template></li>
             </template>
           </ol>
diff --git a/bower_components/cxx-html-doc-framework/toc.js b/bower_components/cxx-html-doc-framework/toc.js
index 8f88d5f..3b094e0 100644
--- a/bower_components/cxx-html-doc-framework/toc.js
+++ b/bower_components/cxx-html-doc-framework/toc.js
@@ -30,20 +30,30 @@ limitations under the License.
                     continue;
                 sections.push(this.collectSections(child));
             }
+            var h1 = root.querySelector('h1');
             return {elem: root,
-                    title: root.querySelector('h1'),
+                    title: h1 ? h1.textContent : root.title,
                     sections: sections};
         },
 
+        updateClauses: function() {
+            this.clauses = document.querySelectorAll('cxx-foreword,cxx-clause');
+        },
+
         clausesChanged: function() {
-            this.sections = this.clauses.array().map(function(clause, index) {
-                clause.set_clause_num(index + 1);
+            var clause_num = 1;
+            this.sections = this.clauses.array().map(function(clause) {
+                if (clause.set_clause_num) {
+                    // Don't number things that can't accept numbers, indicated
+                    // by not having a set_clause_num method.
+                    clause_num = clause.set_clause_num(clause_num);
+                }
                 return this.collectSections(clause);
             }, this);
         },
 
         domReady: function() {
-            this.clauses = document.querySelectorAll('cxx-clause');
+            this.updateClauses();
         }
     })
 })();
diff --git a/bower_components/cxx-html-doc-framework/weak-break.html b/bower_components/cxx-html-doc-framework/weak-break.html
new file mode 100644
index 0000000..0928e02
--- /dev/null
+++ b/bower_components/cxx-html-doc-framework/weak-break.html
@@ -0,0 +1,25 @@
+<!-- Copyright 2014 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<!-- <wbr> doesn't work inside white-space:nowrap in Firefox, and
+     white-space:normal with a U+200B (zero-width space) doesn't work in Chrome.
+     So this element uses both. -->
+
+<polymer-element name="w-br" noscript>
+  <template><style>
+      :host { white-space: normal;}
+      :host::after { content: '\200b';}
+    </style><wbr></template>
+</polymer-element>
diff --git a/bower_components/platform/.bower.json b/bower_components/platform/.bower.json
deleted file mode 100644
index 6d372fd..0000000
--- a/bower_components/platform/.bower.json
+++ /dev/null
@@ -1,26 +0,0 @@
-{
-  "name": "platform",
-  "main": "platform.js",
-  "homepage": "https://github.com/Polymer/platform",
-  "authors": [
-    "The Polymer Authors"
-  ],
-  "description": "Integrate platform polyfills: load, build, test",
-  "keywords": [
-    "polymer",
-    "web",
-    "components"
-  ],
-  "license": "BSD",
-  "private": true,
-  "version": "0.2.3",
-  "_release": "0.2.3",
-  "_resolution": {
-    "type": "version",
-    "tag": "0.2.3",
-    "commit": "92249dd2d99febf89630674af94914829fbed8b9"
-  },
-  "_source": "git://github.com/Polymer/platform.git",
-  "_target": "0.2.3",
-  "_originalSource": "Polymer/platform"
-}
\ No newline at end of file
diff --git a/bower_components/platform/AUTHORS b/bower_components/platform/AUTHORS
deleted file mode 100644
index 0617765..0000000
--- a/bower_components/platform/AUTHORS
+++ /dev/null
@@ -1,9 +0,0 @@
-# Names should be added to this file with this pattern:
-#
-# For individuals:
-#   Name <email address>
-#
-# For organizations:
-#   Organization <fnmatch pattern>
-#
-Google Inc. <*@google.com>
diff --git a/bower_components/platform/CONTRIBUTING.md b/bower_components/platform/CONTRIBUTING.md
deleted file mode 100644
index 1de2f34..0000000
--- a/bower_components/platform/CONTRIBUTING.md
+++ /dev/null
@@ -1,73 +0,0 @@
-# Contributing
-
-Want to contribute to Polymer? Great!
-
-We are more than happy to accept external contributions to the project in the form of [feedback](https://groups.google.com/forum/?fromgroups=#!forum/polymer-dev), [bug reports](../../issues), and pull requests.
-
-## Contributor License Agreement
-
-Before we can accept patches, there's a quick web form you need to fill out.
-
-- If you're contributing as an individual (e.g. you own the intellectual property), fill out [this form](http://code.google.com/legal/individual-cla-v1.0.html).
-- If you're contributing under a company, fill out [this form](http://code.google.com/legal/corporate-cla-v1.0.html) instead.
-
-This CLA asserts that contributions are owned by you and that we can license all work under our [license](LICENSE).
-
-Other projects require a similar agreement: jQuery, Firefox, Apache, Node, and many more.
-
-[More about CLAs](https://www.google.com/search?q=Contributor%20License%20Agreement)
-
-## Initial setup
-
-Here's an easy guide that should get you up and running:
-
-1. Setup Grunt: `sudo npm install -g grunt-cli`
-1. Fork the project on github and pull down your copy.
-   > replace the {{ username }} with your username and {{ repository }} with the repository name
-
-        git clone git@github.com:{{ username }}/{{ repository }}.git --recursive
-
-    Note the `--recursive`. This is necessary for submodules to initialize properly. If you don't do a recursive clone, you'll have to init them manually:
-
-        git submodule init
-        git submodule update
-
-    Download and run the `pull-all.sh` script to install the sibling dependencies.
-
-        git clone git://github.com/Polymer/tools.git && tools/bin/pull-all.sh
-
-1. Test your change
-   > in the repo you've made changes to, run the tests:
-
-        cd $REPO
-        npm install
-        grunt test
-
-1. Commit your code and make a pull request.
-
-That's it for the one time setup. Now you're ready to make a change.
-
-## Submitting a pull request
-
-We iterate fast! To avoid potential merge conflicts, it's a good idea to pull from the main project before making a change and submitting a pull request. The easiest way to do this is setup a remote called `upstream` and do a pull before working on a change:
-
-    git remote add upstream git://github.com/Polymer/{{ repository }}.git
-
-Then before making a change, do a pull from the upstream `master` branch:
-
-    git pull upstream master
-
-To make life easier, add a "pull upstream" alias in your `.gitconfig`:
-
-    [alias]
-      pu = !"git fetch origin -v; git fetch upstream -v; git merge upstream/master"
-
-That will pull in changes from your forked repo, the main (upstream) repo, and merge the two. Then it's just a matter of running `git pu` before a change and pushing to your repo:
-
-    git checkout master
-    git pu
-    # make change
-    git commit -a -m 'Awesome things.'
-    git push
-
-Lastly, don't forget to submit the pull request.
diff --git a/bower_components/platform/LICENSE b/bower_components/platform/LICENSE
deleted file mode 100644
index 92d60b0..0000000
--- a/bower_components/platform/LICENSE
+++ /dev/null
@@ -1,27 +0,0 @@
-// Copyright (c) 2012 The Polymer Authors. All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//    * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//    * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//    * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/bower_components/platform/PATENTS b/bower_components/platform/PATENTS
deleted file mode 100644
index e120963..0000000
--- a/bower_components/platform/PATENTS
+++ /dev/null
@@ -1,23 +0,0 @@
-Additional IP Rights Grant (Patents)
-
-"This implementation" means the copyrightable works distributed by
-Google as part of the Polymer project.
-
-Google hereby grants to You a perpetual, worldwide, non-exclusive,
-no-charge, royalty-free, irrevocable (except as stated in this section)
-patent license to make, have made, use, offer to sell, sell, import,
-transfer and otherwise run, modify and propagate the contents of this
-implementation of Polymer, where such license applies only to those
-patent claims, both currently owned or controlled by Google and acquired
-in the future, licensable by Google that are necessarily infringed by
-this implementation of Polymer.  This grant does not include claims
-that would be infringed only as a consequence of further modification of
-this implementation.  If you or your agent or exclusive licensee
-institute or order or agree to the institution of patent litigation
-against any entity (including a cross-claim or counterclaim in a
-lawsuit) alleging that this implementation of Polymer or any code
-incorporated within this implementation of Polymer constitutes
-direct or contributory patent infringement, or inducement of patent
-infringement, then any patent rights granted to you under this License
-for this implementation of Polymer shall terminate as of the date
-such litigation is filed.
diff --git a/bower_components/platform/README.md b/bower_components/platform/README.md
deleted file mode 100644
index 65b661e..0000000
--- a/bower_components/platform/README.md
+++ /dev/null
@@ -1,6 +0,0 @@
-Platform
-========
-
-Aggregated polyfills the Polymer platform. 
-
-[![Analytics](https://ga-beacon.appspot.com/UA-39334307-2/Polymer/platform/README)](https://github.com/igrigorik/ga-beacon)
diff --git a/bower_components/platform/bower.json b/bower_components/platform/bower.json
deleted file mode 100644
index b8bcbb5..0000000
--- a/bower_components/platform/bower.json
+++ /dev/null
@@ -1,17 +0,0 @@
-{
-  "name": "platform",
-  "main": "platform.js",
-  "homepage": "https://github.com/Polymer/platform",
-  "authors": [
-    "The Polymer Authors"
-  ],
-  "description": "Integrate platform polyfills: load, build, test",
-  "keywords": [
-    "polymer",
-    "web",
-    "components"
-  ],
-  "license": "BSD",
-  "private": true,
-  "version": "0.2.3"
-}
\ No newline at end of file
diff --git a/bower_components/platform/build.log b/bower_components/platform/build.log
deleted file mode 100644
index ea9e9a9..0000000
--- a/bower_components/platform/build.log
+++ /dev/null
@@ -1,40 +0,0 @@
-BUILD LOG
----------
-Build Time: 2014-04-18T13:25:05
-
-NODEJS INFORMATION
-==================
-nodejs: v0.10.26
-grunt: 0.4.4
-grunt-audit: 0.0.3
-grunt-concat-sourcemap: 0.4.1
-grunt-contrib-concat: 0.4.0
-grunt-contrib-uglify: 0.4.0
-grunt-contrib-yuidoc: 0.5.2
-grunt-karma: 0.8.2
-karma: 0.12.2
-chai: 1.9.1
-karma-chrome-launcher: 0.0.2
-karma-mocha: 0.1.3
-karma-ie-launcher: 0.1.5
-karma-crbot-reporter: 0.0.4
-karma-script-launcher: 0.1.0
-mocha: 1.18.2
-karma-safari-launcher: 0.1.1
-karma-firefox-launcher: 0.1.3
-Platform: 0.2.3
-
-REPO REVISIONS
-==============
-CustomElements: 9b997ca97533147f5f17bd666c06e5fa1a13219e
-HTMLImports: 1c796ecc75d8895f50e65160c53f00a875cb9d2b
-NodeBind: c47bc1b40d1cf0123b29620820a7111471e83ff3
-ShadowDOM: ea4371633cd54dc8f65245d3c65268028bc3e2aa
-TemplateBinding: 1cee027fe67680c93ff2b6b070d32708226f6a83
-WeakMap: a0947a9a0f58f5733f464755c3b86de624b00a5d
-observe-js: c57f0e04f857fee6889468d959ab8233df1d5b31
-platform-dev: c90023a27c38f0e62123e07bdc0639b5336396ee
-
-BUILD HASHES
-============
-build/platform.js: 1238c0a208ca35d679efbf22cd0ad1d1b266464d
\ No newline at end of file
diff --git a/bower_components/platform/platform.js b/bower_components/platform/platform.js
deleted file mode 100644
index 8448813..0000000
--- a/bower_components/platform/platform.js
+++ /dev/null
@@ -1,17 +0,0 @@
-/**
- * @license
- * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
- * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
- * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
- * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
- * Code distributed by Google as part of the polymer project is also
- * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
- */
-// @version: 0.2.3
-
-window.Platform=window.Platform||{},window.logFlags=window.logFlags||{},function(a){var b=a.flags||{};location.search.slice(1).split("&").forEach(function(a){a=a.split("="),a[0]&&(b[a[0]]=a[1]||!0)});var c=document.currentScript||document.querySelector('script[src*="platform.js"]');if(c)for(var d,e=c.attributes,f=0;f<e.length;f++)d=e[f],"src"!==d.name&&(b[d.name]=d.value||!0);b.log&&b.log.split(",").forEach(function(a){window.logFlags[a]=!0}),b.shadow=b.shadow||b.shadowdom||b.polyfill,b.shadow="native"===b.shadow?!1:b.shadow||!HTMLElement.prototype.createShadowRoot,b.shadow&&document.querySelectorAll("script").length>1&&console.warn("platform.js is not the first script on the page. See http://www.polymer-project.org/docs/start/platform.html#setup for details."),b.register&&(window.CustomElements=window.CustomElements||{flags:{}},window.CustomElements.flags.register=b.register),b.imports&&(window.HTMLImports=window.HTMLImports||{flags:{}},window.HTMLImports.flags.imports=b.imports),a.flags=b}(Platform),"undefined"==typeof WeakMap&&!function(){var a=Object.defineProperty,b=Date.now()%1e9,c=function(){this.name="__st"+(1e9*Math.random()>>>0)+(b++ +"__")};c.prototype={set:function(b,c){var d=b[this.name];d&&d[0]===b?d[1]=c:a(b,this.name,{value:[b,c],writable:!0})},get:function(a){var b;return(b=a[this.name])&&b[0]===a?b[1]:void 0},"delete":function(a){this.set(a,void 0)}},window.WeakMap=c}(),function(global){"use strict";function detectObjectObserve(){function a(a){b=a}if("function"!=typeof Object.observe||"function"!=typeof Array.observe)return!1;var b=[],c={},d=[];return Object.observe(c,a),Array.observe(d,a),c.id=1,c.id=2,delete 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* Copyright (c) 2014 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n */\n\nwindow.Platform = window.Platform || {};\n// prepopulate window.logFlags if necessary\nwindow.logFlags = window.logFlags || {};\n// process flags\n(function(scope){\n  // import\n  var flags = scope.flags || {};\n  // populate flags from location\n  location.search.slice(1).split('&').forEach(function(o) {\n    o = o.split('=');\n    o[0] && (flags[o[0]] = o[1] || true);\n  });\n  var entryPoint = document.currentScript ||\n      document.querySelector('script[src*=\"platform.js\"]');\n  if (entryPoint) {\n    var a = entryPoint.attributes;\n    for (var i = 0, n; i < a.length; i++) {\n      n = a[i];\n      if (n.name !== 'src') {\n        flags[n.name] = n.value || true;\n      }\n    }\n  }\n  if (flags.log) {\n    flags.log.split(',').forEach(function(f) {\n      window.logFlags[f] = true;\n    });\n  }\n  // If any of these flags match 'native', then force native ShadowDOM; any\n  // other truthy value, or failure to detect native\n  // ShadowDOM, results in polyfill\n  flags.shadow = flags.shadow || flags.shadowdom || flags.polyfill;\n  if (flags.shadow === 'native') {\n    flags.shadow = false;\n  } else {\n    flags.shadow = flags.shadow || !HTMLElement.prototype.createShadowRoot;\n  }\n\n  if (flags.shadow && document.querySelectorAll('script').length > 1) {\n    console.warn('platform.js is not the first script on the page. ' +\n        'See http://www.polymer-project.org/docs/start/platform.html#setup ' +\n        'for details.');\n  }\n\n  // CustomElements polyfill flag\n  if (flags.register) {\n    window.CustomElements = window.CustomElements || {flags: {}};\n    window.CustomElements.flags.register = flags.register;\n  }\n\n  if (flags.imports) {\n    window.HTMLImports = window.HTMLImports || {flags: {}};\n    window.HTMLImports.flags.imports = flags.imports;\n  }\n\n  // export\n  scope.flags = flags;\n})(Platform);\n","/*\n * Copyright 2012 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\nif (typeof WeakMap === 'undefined') {\n  (function() {\n    var defineProperty = Object.defineProperty;\n    var counter = Date.now() % 1e9;\n\n    var WeakMap = function() {\n      this.name = '__st' + (Math.random() * 1e9 >>> 0) + (counter++ + '__');\n    };\n\n    WeakMap.prototype = {\n      set: function(key, value) {\n        var entry = key[this.name];\n        if (entry && entry[0] === key)\n          entry[1] = value;\n        else\n          defineProperty(key, this.name, {value: [key, value], writable: true});\n      },\n      get: function(key) {\n        var entry;\n        return (entry = key[this.name]) && entry[0] === key ?\n            entry[1] : undefined;\n      },\n      delete: function(key) {\n        this.set(key, undefined);\n      }\n    };\n\n    window.WeakMap = WeakMap;\n  })();\n}\n","// Copyright 2012 Google Inc.\n//\n// Licensed under the Apache License, Version 2.0 (the \"License\");\n// you may not use this file except in compliance with the License.\n// You may obtain a copy of the License at\n//\n//     http://www.apache.org/licenses/LICENSE-2.0\n//\n// Unless required by applicable law or agreed to in writing, software\n// distributed under the License is distributed on an \"AS IS\" BASIS,\n// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n// See the License for the specific language governing permissions and\n// limitations under the License.\n\n(function(global) {\n  'use strict';\n\n  // Detect and do basic sanity checking on Object/Array.observe.\n  function detectObjectObserve() {\n    if (typeof Object.observe !== 'function' ||\n        typeof Array.observe !== 'function') {\n      return false;\n    }\n\n    var records = [];\n\n    function callback(recs) {\n      records = recs;\n    }\n\n    var test = {};\n    var arr = [];\n    Object.observe(test, callback);\n    Array.observe(arr, callback);\n    test.id = 1;\n    test.id = 2;\n    delete test.id;\n    arr.push(1, 2);\n    arr.length = 0;\n\n    Object.deliverChangeRecords(callback);\n    if (records.length !== 5)\n      return false;\n\n    if (records[0].type != 'add' ||\n        records[1].type != 'update' ||\n        records[2].type != 'delete' ||\n        records[3].type != 'splice' ||\n        records[4].type != 'splice') {\n      return false;\n    }\n\n    Object.unobserve(test, callback);\n    Array.unobserve(arr, callback);\n\n    return true;\n  }\n\n  var hasObserve = detectObjectObserve();\n\n  function detectEval() {\n    // don't test for eval if document has CSP securityPolicy object and we can see that\n    // eval is not supported. This avoids an error message in console even when the exception\n    // is caught\n    if (global.document &&\n        'securityPolicy' in global.document &&\n        !global.document.securityPolicy.allowsEval) {\n      return false;\n    }\n\n    // Don't test for eval if we're running in a Chrome App environment.\n    // We check for APIs set that only exist in a Chrome App context.\n    if (typeof chrome !== 'undefined' && chrome.app && chrome.app.runtime) {\n      return false;\n    }\n\n    try {\n      var f = new Function('', 'return true;');\n      return f();\n    } catch (ex) {\n      return false;\n    }\n  }\n\n  var hasEval = detectEval();\n\n  function isIndex(s) {\n    return +s === s >>> 0;\n  }\n\n  function toNumber(s) {\n    return +s;\n  }\n\n  function isObject(obj) {\n    return obj === Object(obj);\n  }\n\n  var numberIsNaN = global.Number.isNaN || function isNaN(value) {\n    return typeof value === 'number' && global.isNaN(value);\n  }\n\n  function areSameValue(left, right) {\n    if (left === right)\n      return left !== 0 || 1 / left === 1 / right;\n    if (numberIsNaN(left) && numberIsNaN(right))\n      return true;\n\n    return left !== left && right !== right;\n  }\n\n  var createObject = ('__proto__' in {}) ?\n    function(obj) { return obj; } :\n    function(obj) {\n      var proto = obj.__proto__;\n      if (!proto)\n        return obj;\n      var newObject = Object.create(proto);\n      Object.getOwnPropertyNames(obj).forEach(function(name) {\n        Object.defineProperty(newObject, name,\n                             Object.getOwnPropertyDescriptor(obj, name));\n      });\n      return newObject;\n    };\n\n  var identStart = '[\\$_a-zA-Z]';\n  var identPart = '[\\$_a-zA-Z0-9]';\n  var ident = identStart + '+' + identPart + '*';\n  var elementIndex = '(?:[0-9]|[1-9]+[0-9]+)';\n  var identOrElementIndex = '(?:' + ident + '|' + elementIndex + ')';\n  var path = '(?:' + identOrElementIndex + ')(?:\\\\s*\\\\.\\\\s*' + identOrElementIndex + ')*';\n  var pathRegExp = new RegExp('^' + path + '$');\n\n  function isPathValid(s) {\n    if (typeof s != 'string')\n      return false;\n    s = s.trim();\n\n    if (s == '')\n      return true;\n\n    if (s[0] == '.')\n      return false;\n\n    return pathRegExp.test(s);\n  }\n\n  var constructorIsPrivate = {};\n\n  function Path(s, privateToken) {\n    if (privateToken !== constructorIsPrivate)\n      throw Error('Use Path.get to retrieve path objects');\n\n    if (s.trim() == '')\n      return this;\n\n    if (isIndex(s)) {\n      this.push(s);\n      return this;\n    }\n\n    s.split(/\\s*\\.\\s*/).filter(function(part) {\n      return part;\n    }).forEach(function(part) {\n      this.push(part);\n    }, this);\n\n    if (hasEval && this.length) {\n      this.getValueFrom = this.compiledGetValueFromFn();\n    }\n  }\n\n  // TODO(rafaelw): Make simple LRU cache\n  var pathCache = {};\n\n  function getPath(pathString) {\n    if (pathString instanceof Path)\n      return pathString;\n\n    if (pathString == null)\n      pathString = '';\n\n    if (typeof pathString !== 'string')\n      pathString = String(pathString);\n\n    var path = pathCache[pathString];\n    if (path)\n      return path;\n    if (!isPathValid(pathString))\n      return invalidPath;\n    var path = new Path(pathString, constructorIsPrivate);\n    pathCache[pathString] = path;\n    return path;\n  }\n\n  Path.get = getPath;\n\n  Path.prototype = createObject({\n    __proto__: [],\n    valid: true,\n\n    toString: function() {\n      return this.join('.');\n    },\n\n    getValueFrom: function(obj, directObserver) {\n      for (var i = 0; i < this.length; i++) {\n        if (obj == null)\n          return;\n        obj = obj[this[i]];\n      }\n      return obj;\n    },\n\n    iterateObjects: function(obj, observe) {\n      for (var i = 0; i < this.length; i++) {\n        if (i)\n          obj = obj[this[i - 1]];\n        if (!isObject(obj))\n          return;\n        observe(obj, this[0]);\n      }\n    },\n\n    compiledGetValueFromFn: function() {\n      var accessors = this.map(function(ident) {\n        return isIndex(ident) ? '[\"' + ident + '\"]' : '.' + ident;\n      });\n\n      var str = '';\n      var pathString = 'obj';\n      str += 'if (obj != null';\n      var i = 0;\n      for (; i < (this.length - 1); i++) {\n        var ident = this[i];\n        pathString += accessors[i];\n        str += ' &&\\n     ' + pathString + ' != null';\n      }\n      str += ')\\n';\n\n      pathString += accessors[i];\n\n      str += '  return ' + pathString + ';\\nelse\\n  return undefined;';\n      return new Function('obj', str);\n    },\n\n    setValueFrom: function(obj, value) {\n      if (!this.length)\n        return false;\n\n      for (var i = 0; i < this.length - 1; i++) {\n        if (!isObject(obj))\n          return false;\n        obj = obj[this[i]];\n      }\n\n      if (!isObject(obj))\n        return false;\n\n      obj[this[i]] = value;\n      return true;\n    }\n  });\n\n  var invalidPath = new Path('', constructorIsPrivate);\n  invalidPath.valid = false;\n  invalidPath.getValueFrom = invalidPath.setValueFrom = function() {};\n\n  var MAX_DIRTY_CHECK_CYCLES = 1000;\n\n  function dirtyCheck(observer) {\n    var cycles = 0;\n    while (cycles < MAX_DIRTY_CHECK_CYCLES && observer.check_()) {\n      cycles++;\n    }\n    if (global.testingExposeCycleCount)\n      global.dirtyCheckCycleCount = cycles;\n\n    return cycles > 0;\n  }\n\n  function objectIsEmpty(object) {\n    for (var prop in object)\n      return false;\n    return true;\n  }\n\n  function diffIsEmpty(diff) {\n    return objectIsEmpty(diff.added) &&\n           objectIsEmpty(diff.removed) &&\n           objectIsEmpty(diff.changed);\n  }\n\n  function diffObjectFromOldObject(object, oldObject) {\n    var added = {};\n    var removed = {};\n    var changed = {};\n\n    for (var prop in oldObject) {\n      var newValue = object[prop];\n\n      if (newValue !== undefined && newValue === oldObject[prop])\n        continue;\n\n      if (!(prop in object)) {\n        removed[prop] = undefined;\n        continue;\n      }\n\n      if (newValue !== oldObject[prop])\n        changed[prop] = newValue;\n    }\n\n    for (var prop in object) {\n      if (prop in oldObject)\n        continue;\n\n      added[prop] = object[prop];\n    }\n\n    if (Array.isArray(object) && object.length !== oldObject.length)\n      changed.length = object.length;\n\n    return {\n      added: added,\n      removed: removed,\n      changed: changed\n    };\n  }\n\n  var eomTasks = [];\n  function runEOMTasks() {\n    if (!eomTasks.length)\n      return false;\n\n    for (var i = 0; i < eomTasks.length; i++) {\n      eomTasks[i]();\n    }\n    eomTasks.length = 0;\n    return true;\n  }\n\n  var runEOM = hasObserve ? (function(){\n    var eomObj = { pingPong: true };\n    var eomRunScheduled = false;\n\n    Object.observe(eomObj, function() {\n      runEOMTasks();\n      eomRunScheduled = false;\n    });\n\n    return function(fn) {\n      eomTasks.push(fn);\n      if (!eomRunScheduled) {\n        eomRunScheduled = true;\n        eomObj.pingPong = !eomObj.pingPong;\n      }\n    };\n  })() :\n  (function() {\n    return function(fn) {\n      eomTasks.push(fn);\n    };\n  })();\n\n  var observedObjectCache = [];\n\n  function newObservedObject() {\n    var observer;\n    var object;\n    var discardRecords = false;\n    var first = true;\n\n    function callback(records) {\n      if (observer && observer.state_ === OPENED && !discardRecords)\n        observer.check_(records);\n    }\n\n    return {\n      open: function(obs) {\n        if (observer)\n          throw Error('ObservedObject in use');\n\n        if (!first)\n          Object.deliverChangeRecords(callback);\n\n        observer = obs;\n        first = false;\n      },\n      observe: function(obj, arrayObserve) {\n        object = obj;\n        if (arrayObserve)\n          Array.observe(object, callback);\n        else\n          Object.observe(object, callback);\n      },\n      deliver: function(discard) {\n        discardRecords = discard;\n        Object.deliverChangeRecords(callback);\n        discardRecords = false;\n      },\n      close: function() {\n        observer = undefined;\n        Object.unobserve(object, callback);\n        observedObjectCache.push(this);\n      }\n    };\n  }\n\n  /*\n   * The observedSet abstraction is a perf optimization which reduces the total\n   * number of Object.observe observations of a set of objects. The idea is that\n   * groups of Observers will have some object dependencies in common and this\n   * observed set ensures that each object in the transitive closure of\n   * dependencies is only observed once. The observedSet acts as a write barrier\n   * such that whenever any change comes through, all Observers are checked for\n   * changed values.\n   *\n   * Note that this optimization is explicitly moving work from setup-time to\n   * change-time.\n   *\n   * TODO(rafaelw): Implement \"garbage collection\". In order to move work off\n   * the critical path, when Observers are closed, their observed objects are\n   * not Object.unobserve(d). As a result, it's possible that if the observedSet\n   * is kept open, but some Observers have been closed, it could cause \"leaks\"\n   * (prevent otherwise collectable objects from being collected). At some\n   * point, we should implement incremental \"gc\" which keeps a list of\n   * observedSets which may need clean-up and does small amounts of cleanup on a\n   * timeout until all is clean.\n   */\n\n  function getObservedObject(observer, object, arrayObserve) {\n    var dir = observedObjectCache.pop() || newObservedObject();\n    dir.open(observer);\n    dir.observe(object, arrayObserve);\n    return dir;\n  }\n\n  var observedSetCache = [];\n\n  function newObservedSet() {\n    var observerCount = 0;\n    var observers = [];\n    var objects = [];\n    var rootObj;\n    var rootObjProps;\n\n    function observe(obj, prop) {\n      if (!obj)\n        return;\n\n      if (obj === rootObj)\n        rootObjProps[prop] = true;\n\n      if (objects.indexOf(obj) < 0) {\n        objects.push(obj);\n        Object.observe(obj, callback);\n      }\n\n      observe(Object.getPrototypeOf(obj), prop);\n    }\n\n    function allRootObjNonObservedProps(recs) {\n      for (var i = 0; i < recs.length; i++) {\n        var rec = recs[i];\n        if (rec.object !== rootObj ||\n            rootObjProps[rec.name] ||\n            rec.type === 'setPrototype') {\n          return false;\n        }\n      }\n      return true;\n    }\n\n    function callback(recs) {\n      if (allRootObjNonObservedProps(recs))\n        return;\n\n      var observer;\n      for (var i = 0; i < observers.length; i++) {\n        observer = observers[i];\n        if (observer.state_ == OPENED) {\n          observer.iterateObjects_(observe);\n        }\n      }\n\n      for (var i = 0; i < observers.length; i++) {\n        observer = observers[i];\n        if (observer.state_ == OPENED) {\n          observer.check_();\n        }\n      }\n    }\n\n    var record = {\n      object: undefined,\n      objects: objects,\n      open: function(obs, object) {\n        if (!rootObj) {\n          rootObj = object;\n          rootObjProps = {};\n        }\n\n        observers.push(obs);\n        observerCount++;\n        obs.iterateObjects_(observe);\n      },\n      close: function(obs) {\n        observerCount--;\n        if (observerCount > 0) {\n          return;\n        }\n\n        for (var i = 0; i < objects.length; i++) {\n          Object.unobserve(objects[i], callback);\n          Observer.unobservedCount++;\n        }\n\n        observers.length = 0;\n        objects.length = 0;\n        rootObj = undefined;\n        rootObjProps = undefined;\n        observedSetCache.push(this);\n      }\n    };\n\n    return record;\n  }\n\n  var lastObservedSet;\n\n  function getObservedSet(observer, obj) {\n    if (!lastObservedSet || lastObservedSet.object !== obj) {\n      lastObservedSet = observedSetCache.pop() || newObservedSet();\n      lastObservedSet.object = obj;\n    }\n    lastObservedSet.open(observer, obj);\n    return lastObservedSet;\n  }\n\n  var UNOPENED = 0;\n  var OPENED = 1;\n  var CLOSED = 2;\n  var RESETTING = 3;\n\n  var nextObserverId = 1;\n\n  function Observer() {\n    this.state_ = UNOPENED;\n    this.callback_ = undefined;\n    this.target_ = undefined; // TODO(rafaelw): Should be WeakRef\n    this.directObserver_ = undefined;\n    this.value_ = undefined;\n    this.id_ = nextObserverId++;\n  }\n\n  Observer.prototype = {\n    open: function(callback, target) {\n      if (this.state_ != UNOPENED)\n        throw Error('Observer has already been opened.');\n\n      addToAll(this);\n      this.callback_ = callback;\n      this.target_ = target;\n      this.connect_();\n      this.state_ = OPENED;\n      return this.value_;\n    },\n\n    close: function() {\n      if (this.state_ != OPENED)\n        return;\n\n      removeFromAll(this);\n      this.disconnect_();\n      this.value_ = undefined;\n      this.callback_ = undefined;\n      this.target_ = undefined;\n      this.state_ = CLOSED;\n    },\n\n    deliver: function() {\n      if (this.state_ != OPENED)\n        return;\n\n      dirtyCheck(this);\n    },\n\n    report_: function(changes) {\n      try {\n        this.callback_.apply(this.target_, changes);\n      } catch (ex) {\n        Observer._errorThrownDuringCallback = true;\n        console.error('Exception caught during observer callback: ' +\n                       (ex.stack || ex));\n      }\n    },\n\n    discardChanges: function() {\n      this.check_(undefined, true);\n      return this.value_;\n    }\n  }\n\n  var collectObservers = !hasObserve;\n  var allObservers;\n  Observer._allObserversCount = 0;\n\n  if (collectObservers) {\n    allObservers = [];\n  }\n\n  function addToAll(observer) {\n    Observer._allObserversCount++;\n    if (!collectObservers)\n      return;\n\n    allObservers.push(observer);\n  }\n\n  function removeFromAll(observer) {\n    Observer._allObserversCount--;\n  }\n\n  var runningMicrotaskCheckpoint = false;\n\n  var hasDebugForceFullDelivery = hasObserve && (function() {\n    try {\n      eval('%RunMicrotasks()');\n      return true;\n    } catch (ex) {\n      return false;\n    }\n  })();\n\n  global.Platform = global.Platform || {};\n\n  global.Platform.performMicrotaskCheckpoint = function() {\n    if (runningMicrotaskCheckpoint)\n      return;\n\n    if (hasDebugForceFullDelivery) {\n      eval('%RunMicrotasks()');\n      return;\n    }\n\n    if (!collectObservers)\n      return;\n\n    runningMicrotaskCheckpoint = true;\n\n    var cycles = 0;\n    var anyChanged, toCheck;\n\n    do {\n      cycles++;\n      toCheck = allObservers;\n      allObservers = [];\n      anyChanged = false;\n\n      for (var i = 0; i < toCheck.length; i++) {\n        var observer = toCheck[i];\n        if (observer.state_ != OPENED)\n          continue;\n\n        if (observer.check_())\n          anyChanged = true;\n\n        allObservers.push(observer);\n      }\n      if (runEOMTasks())\n        anyChanged = true;\n    } while (cycles < MAX_DIRTY_CHECK_CYCLES && anyChanged);\n\n    if (global.testingExposeCycleCount)\n      global.dirtyCheckCycleCount = cycles;\n\n    runningMicrotaskCheckpoint = false;\n  };\n\n  if (collectObservers) {\n    global.Platform.clearObservers = function() {\n      allObservers = [];\n    };\n  }\n\n  function ObjectObserver(object) {\n    Observer.call(this);\n    this.value_ = object;\n    this.oldObject_ = undefined;\n  }\n\n  ObjectObserver.prototype = createObject({\n    __proto__: Observer.prototype,\n\n    arrayObserve: false,\n\n    connect_: function(callback, target) {\n      if (hasObserve) {\n        this.directObserver_ = getObservedObject(this, this.value_,\n                                                 this.arrayObserve);\n      } else {\n        this.oldObject_ = this.copyObject(this.value_);\n      }\n\n    },\n\n    copyObject: function(object) {\n      var copy = Array.isArray(object) ? [] : {};\n      for (var prop in object) {\n        copy[prop] = object[prop];\n      };\n      if (Array.isArray(object))\n        copy.length = object.length;\n      return copy;\n    },\n\n    check_: function(changeRecords, skipChanges) {\n      var diff;\n      var oldValues;\n      if (hasObserve) {\n        if (!changeRecords)\n          return false;\n\n        oldValues = {};\n        diff = diffObjectFromChangeRecords(this.value_, changeRecords,\n                                           oldValues);\n      } else {\n        oldValues = this.oldObject_;\n        diff = diffObjectFromOldObject(this.value_, this.oldObject_);\n      }\n\n      if (diffIsEmpty(diff))\n        return false;\n\n      if (!hasObserve)\n        this.oldObject_ = this.copyObject(this.value_);\n\n      this.report_([\n        diff.added || {},\n        diff.removed || {},\n        diff.changed || {},\n        function(property) {\n          return oldValues[property];\n        }\n      ]);\n\n      return true;\n    },\n\n    disconnect_: function() {\n      if (hasObserve) {\n        this.directObserver_.close();\n        this.directObserver_ = undefined;\n      } else {\n        this.oldObject_ = undefined;\n      }\n    },\n\n    deliver: function() {\n      if (this.state_ != OPENED)\n        return;\n\n      if (hasObserve)\n        this.directObserver_.deliver(false);\n      else\n        dirtyCheck(this);\n    },\n\n    discardChanges: function() {\n      if (this.directObserver_)\n        this.directObserver_.deliver(true);\n      else\n        this.oldObject_ = this.copyObject(this.value_);\n\n      return this.value_;\n    }\n  });\n\n  function ArrayObserver(array) {\n    if (!Array.isArray(array))\n      throw Error('Provided object is not an Array');\n    ObjectObserver.call(this, array);\n  }\n\n  ArrayObserver.prototype = createObject({\n\n    __proto__: ObjectObserver.prototype,\n\n    arrayObserve: true,\n\n    copyObject: function(arr) {\n      return arr.slice();\n    },\n\n    check_: function(changeRecords) {\n      var splices;\n      if (hasObserve) {\n        if (!changeRecords)\n          return false;\n        splices = projectArraySplices(this.value_, changeRecords);\n      } else {\n        splices = calcSplices(this.value_, 0, this.value_.length,\n                              this.oldObject_, 0, this.oldObject_.length);\n      }\n\n      if (!splices || !splices.length)\n        return false;\n\n      if (!hasObserve)\n        this.oldObject_ = this.copyObject(this.value_);\n\n      this.report_([splices]);\n      return true;\n    }\n  });\n\n  ArrayObserver.applySplices = function(previous, current, splices) {\n    splices.forEach(function(splice) {\n      var spliceArgs = [splice.index, splice.removed.length];\n      var addIndex = splice.index;\n      while (addIndex < splice.index + splice.addedCount) {\n        spliceArgs.push(current[addIndex]);\n        addIndex++;\n      }\n\n      Array.prototype.splice.apply(previous, spliceArgs);\n    });\n  };\n\n  function PathObserver(object, path) {\n    Observer.call(this);\n\n    this.object_ = object;\n    this.path_ = getPath(path);\n    this.directObserver_ = undefined;\n  }\n\n  PathObserver.prototype = createObject({\n    __proto__: Observer.prototype,\n\n    connect_: function() {\n      if (hasObserve)\n        this.directObserver_ = getObservedSet(this, this.object_);\n\n      this.check_(undefined, true);\n    },\n\n    disconnect_: function() {\n      this.value_ = undefined;\n\n      if (this.directObserver_) {\n        this.directObserver_.close(this);\n        this.directObserver_ = undefined;\n      }\n    },\n\n    iterateObjects_: function(observe) {\n      this.path_.iterateObjects(this.object_, observe);\n    },\n\n    check_: function(changeRecords, skipChanges) {\n      var oldValue = this.value_;\n      this.value_ = this.path_.getValueFrom(this.object_);\n      if (skipChanges || areSameValue(this.value_, oldValue))\n        return false;\n\n      this.report_([this.value_, oldValue]);\n      return true;\n    },\n\n    setValue: function(newValue) {\n      if (this.path_)\n        this.path_.setValueFrom(this.object_, newValue);\n    }\n  });\n\n  function CompoundObserver(reportChangesOnOpen) {\n    Observer.call(this);\n\n    this.reportChangesOnOpen_ = reportChangesOnOpen;\n    this.value_ = [];\n    this.directObserver_ = undefined;\n    this.observed_ = [];\n  }\n\n  var observerSentinel = {};\n\n  CompoundObserver.prototype = createObject({\n    __proto__: Observer.prototype,\n\n    connect_: function() {\n      if (hasObserve) {\n        var object;\n        var needsDirectObserver = false;\n        for (var i = 0; i < this.observed_.length; i += 2) {\n          object = this.observed_[i]\n          if (object !== observerSentinel) {\n            needsDirectObserver = true;\n            break;\n          }\n        }\n\n        if (needsDirectObserver)\n          this.directObserver_ = getObservedSet(this, object);\n      }\n\n      this.check_(undefined, !this.reportChangesOnOpen_);\n    },\n\n    disconnect_: function() {\n      for (var i = 0; i < this.observed_.length; i += 2) {\n        if (this.observed_[i] === observerSentinel)\n          this.observed_[i + 1].close();\n      }\n      this.observed_.length = 0;\n      this.value_.length = 0;\n\n      if (this.directObserver_) {\n        this.directObserver_.close(this);\n        this.directObserver_ = undefined;\n      }\n    },\n\n    addPath: function(object, path) {\n      if (this.state_ != UNOPENED && this.state_ != RESETTING)\n        throw Error('Cannot add paths once started.');\n\n      var path = getPath(path);\n      this.observed_.push(object, path);\n      if (!this.reportChangesOnOpen_)\n        return;\n      var index = this.observed_.length / 2 - 1;\n      this.value_[index] = path.getValueFrom(object);\n    },\n\n    addObserver: function(observer) {\n      if (this.state_ != UNOPENED && this.state_ != RESETTING)\n        throw Error('Cannot add observers once started.');\n\n      this.observed_.push(observerSentinel, observer);\n      if (!this.reportChangesOnOpen_)\n        return;\n      var index = this.observed_.length / 2 - 1;\n      this.value_[index] = observer.open(this.deliver, this);\n    },\n\n    startReset: function() {\n      if (this.state_ != OPENED)\n        throw Error('Can only reset while open');\n\n      this.state_ = RESETTING;\n      this.disconnect_();\n    },\n\n    finishReset: function() {\n      if (this.state_ != RESETTING)\n        throw Error('Can only finishReset after startReset');\n      this.state_ = OPENED;\n      this.connect_();\n\n      return this.value_;\n    },\n\n    iterateObjects_: function(observe) {\n      var object;\n      for (var i = 0; i < this.observed_.length; i += 2) {\n        object = this.observed_[i]\n        if (object !== observerSentinel)\n          this.observed_[i + 1].iterateObjects(object, observe)\n      }\n    },\n\n    check_: function(changeRecords, skipChanges) {\n      var oldValues;\n      for (var i = 0; i < this.observed_.length; i += 2) {\n        var object = this.observed_[i];\n        var path = this.observed_[i+1];\n        var value;\n        if (object === observerSentinel) {\n          var observable = path;\n          value = this.state_ === UNOPENED ?\n              observable.open(this.deliver, this) :\n              observable.discardChanges();\n        } else {\n          value = path.getValueFrom(object);\n        }\n\n        if (skipChanges) {\n          this.value_[i / 2] = value;\n          continue;\n        }\n\n        if (areSameValue(value, this.value_[i / 2]))\n          continue;\n\n        oldValues = oldValues || [];\n        oldValues[i / 2] = this.value_[i / 2];\n        this.value_[i / 2] = value;\n      }\n\n      if (!oldValues)\n        return false;\n\n      // TODO(rafaelw): Having observed_ as the third callback arg here is\n      // pretty lame API. Fix.\n      this.report_([this.value_, oldValues, this.observed_]);\n      return true;\n    }\n  });\n\n  function identFn(value) { return value; }\n\n  function ObserverTransform(observable, getValueFn, setValueFn,\n                             dontPassThroughSet) {\n    this.callback_ = undefined;\n    this.target_ = undefined;\n    this.value_ = undefined;\n    this.observable_ = observable;\n    this.getValueFn_ = getValueFn || identFn;\n    this.setValueFn_ = setValueFn || identFn;\n    // TODO(rafaelw): This is a temporary hack. PolymerExpressions needs this\n    // at the moment because of a bug in it's dependency tracking.\n    this.dontPassThroughSet_ = dontPassThroughSet;\n  }\n\n  ObserverTransform.prototype = {\n    open: function(callback, target) {\n      this.callback_ = callback;\n      this.target_ = target;\n      this.value_ =\n          this.getValueFn_(this.observable_.open(this.observedCallback_, this));\n      return this.value_;\n    },\n\n    observedCallback_: function(value) {\n      value = this.getValueFn_(value);\n      if (areSameValue(value, this.value_))\n        return;\n      var oldValue = this.value_;\n      this.value_ = value;\n      this.callback_.call(this.target_, this.value_, oldValue);\n    },\n\n    discardChanges: function() {\n      this.value_ = this.getValueFn_(this.observable_.discardChanges());\n      return this.value_;\n    },\n\n    deliver: function() {\n      return this.observable_.deliver();\n    },\n\n    setValue: function(value) {\n      value = this.setValueFn_(value);\n      if (!this.dontPassThroughSet_ && this.observable_.setValue)\n        return this.observable_.setValue(value);\n    },\n\n    close: function() {\n      if (this.observable_)\n        this.observable_.close();\n      this.callback_ = undefined;\n      this.target_ = undefined;\n      this.observable_ = undefined;\n      this.value_ = undefined;\n      this.getValueFn_ = undefined;\n      this.setValueFn_ = undefined;\n    }\n  }\n\n  var expectedRecordTypes = {\n    add: true,\n    update: true,\n    delete: true\n  };\n\n var updateRecord = {\n    object: undefined,\n    type: 'update',\n    name: undefined,\n    oldValue: undefined\n  };\n\n  function notify(object, name, value, oldValue) {\n    if (areSameValue(value, oldValue))\n      return;\n\n    // TODO(rafaelw): Hack hack hack. This entire code really needs to move\n    // out of observe-js into polymer.\n    if (typeof object.propertyChanged_ == 'function')\n      object.propertyChanged_(name, value, oldValue);\n\n    if (!hasObserve)\n      return;\n\n    var notifier = object.notifier_;\n    if (!notifier)\n      notifier = object.notifier_ = Object.getNotifier(object);\n\n    updateRecord.object = object;\n    updateRecord.name = name;\n    updateRecord.oldValue = oldValue;\n\n    notifier.notify(updateRecord);\n  }\n\n  Observer.createBindablePrototypeAccessor = function(proto, name) {\n    var privateName = name + '_';\n    var privateObservable  = name + 'Observable_';\n\n    proto[privateName] = proto[name];\n\n    Object.defineProperty(proto, name, {\n      get: function() {\n        var observable = this[privateObservable];\n        if (observable)\n          observable.deliver();\n\n        return this[privateName];\n      },\n      set: function(value) {\n        var observable = this[privateObservable];\n        if (observable) {\n          observable.setValue(value);\n          return;\n        }\n\n        var oldValue = this[privateName];\n        this[privateName] = value;\n        notify(this, name, value, oldValue);\n\n        return value;\n      },\n      configurable: true\n    });\n  }\n\n  Observer.bindToInstance = function(instance, name, observable, resolveFn) {\n    var privateName = name + '_';\n    var privateObservable  = name + 'Observable_';\n\n    instance[privateObservable] = observable;\n    var oldValue = instance[privateName];\n    var value = observable.open(function(value, oldValue) {\n      instance[privateName] = value;\n      notify(instance, name, value, oldValue);\n    });\n\n    if (resolveFn && !areSameValue(oldValue, value)) {\n      var resolvedValue = resolveFn(oldValue, value);\n      if (!areSameValue(value, resolvedValue)) {\n        value = resolvedValue;\n        if (observable.setValue)\n          observable.setValue(value);\n      }\n    }\n\n    instance[privateName] = value;\n    notify(instance, name, value, oldValue);\n\n    return {\n      close: function() {\n        observable.close();\n        instance[privateObservable] = undefined;\n      }\n    };\n  }\n\n  function diffObjectFromChangeRecords(object, changeRecords, oldValues) {\n    var added = {};\n    var removed = {};\n\n    for (var i = 0; i < changeRecords.length; i++) {\n      var record = changeRecords[i];\n      if (!expectedRecordTypes[record.type]) {\n        console.error('Unknown changeRecord type: ' + record.type);\n        console.error(record);\n        continue;\n      }\n\n      if (!(record.name in oldValues))\n        oldValues[record.name] = record.oldValue;\n\n      if (record.type == 'update')\n        continue;\n\n      if (record.type == 'add') {\n        if (record.name in removed)\n          delete removed[record.name];\n        else\n          added[record.name] = true;\n\n        continue;\n      }\n\n      // type = 'delete'\n      if (record.name in added) {\n        delete added[record.name];\n        delete oldValues[record.name];\n      } else {\n        removed[record.name] = true;\n      }\n    }\n\n    for (var prop in added)\n      added[prop] = object[prop];\n\n    for (var prop in removed)\n      removed[prop] = undefined;\n\n    var changed = {};\n    for (var prop in oldValues) {\n      if (prop in added || prop in removed)\n        continue;\n\n      var newValue = object[prop];\n      if (oldValues[prop] !== newValue)\n        changed[prop] = newValue;\n    }\n\n    return {\n      added: added,\n      removed: removed,\n      changed: changed\n    };\n  }\n\n  function newSplice(index, removed, addedCount) {\n    return {\n      index: index,\n      removed: removed,\n      addedCount: addedCount\n    };\n  }\n\n  var EDIT_LEAVE = 0;\n  var EDIT_UPDATE = 1;\n  var EDIT_ADD = 2;\n  var EDIT_DELETE = 3;\n\n  function ArraySplice() {}\n\n  ArraySplice.prototype = {\n\n    // Note: This function is *based* on the computation of the Levenshtein\n    // \"edit\" distance. The one change is that \"updates\" are treated as two\n    // edits - not one. With Array splices, an update is really a delete\n    // followed by an add. By retaining this, we optimize for \"keeping\" the\n    // maximum array items in the original array. For example:\n    //\n    //   'xxxx123' -> '123yyyy'\n    //\n    // With 1-edit updates, the shortest path would be just to update all seven\n    // characters. With 2-edit updates, we delete 4, leave 3, and add 4. This\n    // leaves the substring '123' intact.\n    calcEditDistances: function(current, currentStart, currentEnd,\n                                old, oldStart, oldEnd) {\n      // \"Deletion\" columns\n      var rowCount = oldEnd - oldStart + 1;\n      var columnCount = currentEnd - currentStart + 1;\n      var distances = new Array(rowCount);\n\n      // \"Addition\" rows. Initialize null column.\n      for (var i = 0; i < rowCount; i++) {\n        distances[i] = new Array(columnCount);\n        distances[i][0] = i;\n      }\n\n      // Initialize null row\n      for (var j = 0; j < columnCount; j++)\n        distances[0][j] = j;\n\n      for (var i = 1; i < rowCount; i++) {\n        for (var j = 1; j < columnCount; j++) {\n          if (this.equals(current[currentStart + j - 1], old[oldStart + i - 1]))\n            distances[i][j] = distances[i - 1][j - 1];\n          else {\n            var north = distances[i - 1][j] + 1;\n            var west = distances[i][j - 1] + 1;\n            distances[i][j] = north < west ? north : west;\n          }\n        }\n      }\n\n      return distances;\n    },\n\n    // This starts at the final weight, and walks \"backward\" by finding\n    // the minimum previous weight recursively until the origin of the weight\n    // matrix.\n    spliceOperationsFromEditDistances: function(distances) {\n      var i = distances.length - 1;\n      var j = distances[0].length - 1;\n      var current = distances[i][j];\n      var edits = [];\n      while (i > 0 || j > 0) {\n        if (i == 0) {\n          edits.push(EDIT_ADD);\n          j--;\n          continue;\n        }\n        if (j == 0) {\n          edits.push(EDIT_DELETE);\n          i--;\n          continue;\n        }\n        var northWest = distances[i - 1][j - 1];\n        var west = distances[i - 1][j];\n        var north = distances[i][j - 1];\n\n        var min;\n        if (west < north)\n          min = west < northWest ? west : northWest;\n        else\n          min = north < northWest ? north : northWest;\n\n        if (min == northWest) {\n          if (northWest == current) {\n            edits.push(EDIT_LEAVE);\n          } else {\n            edits.push(EDIT_UPDATE);\n            current = northWest;\n          }\n          i--;\n          j--;\n        } else if (min == west) {\n          edits.push(EDIT_DELETE);\n          i--;\n          current = west;\n        } else {\n          edits.push(EDIT_ADD);\n          j--;\n          current = north;\n        }\n      }\n\n      edits.reverse();\n      return edits;\n    },\n\n    /**\n     * Splice Projection functions:\n     *\n     * A splice map is a representation of how a previous array of items\n     * was transformed into a new array of items. Conceptually it is a list of\n     * tuples of\n     *\n     *   <index, removed, addedCount>\n     *\n     * which are kept in ascending index order of. The tuple represents that at\n     * the |index|, |removed| sequence of items were removed, and counting forward\n     * from |index|, |addedCount| items were added.\n     */\n\n    /**\n     * Lacking individual splice mutation information, the minimal set of\n     * splices can be synthesized given the previous state and final state of an\n     * array. The basic approach is to calculate the edit distance matrix and\n     * choose the shortest path through it.\n     *\n     * Complexity: O(l * p)\n     *   l: The length of the current array\n     *   p: The length of the old array\n     */\n    calcSplices: function(current, currentStart, currentEnd,\n                          old, oldStart, oldEnd) {\n      var prefixCount = 0;\n      var suffixCount = 0;\n\n      var minLength = Math.min(currentEnd - currentStart, oldEnd - oldStart);\n      if (currentStart == 0 && oldStart == 0)\n        prefixCount = this.sharedPrefix(current, old, minLength);\n\n      if (currentEnd == current.length && oldEnd == old.length)\n        suffixCount = this.sharedSuffix(current, old, minLength - prefixCount);\n\n      currentStart += prefixCount;\n      oldStart += prefixCount;\n      currentEnd -= suffixCount;\n      oldEnd -= suffixCount;\n\n      if (currentEnd - currentStart == 0 && oldEnd - oldStart == 0)\n        return [];\n\n      if (currentStart == currentEnd) {\n        var splice = newSplice(currentStart, [], 0);\n        while (oldStart < oldEnd)\n          splice.removed.push(old[oldStart++]);\n\n        return [ splice ];\n      } else if (oldStart == oldEnd)\n        return [ newSplice(currentStart, [], currentEnd - currentStart) ];\n\n      var ops = this.spliceOperationsFromEditDistances(\n          this.calcEditDistances(current, currentStart, currentEnd,\n                                 old, oldStart, oldEnd));\n\n      var splice = undefined;\n      var splices = [];\n      var index = currentStart;\n      var oldIndex = oldStart;\n      for (var i = 0; i < ops.length; i++) {\n        switch(ops[i]) {\n          case EDIT_LEAVE:\n            if (splice) {\n              splices.push(splice);\n              splice = undefined;\n            }\n\n            index++;\n            oldIndex++;\n            break;\n          case EDIT_UPDATE:\n            if (!splice)\n              splice = newSplice(index, [], 0);\n\n            splice.addedCount++;\n            index++;\n\n            splice.removed.push(old[oldIndex]);\n            oldIndex++;\n            break;\n          case EDIT_ADD:\n            if (!splice)\n              splice = newSplice(index, [], 0);\n\n            splice.addedCount++;\n            index++;\n            break;\n          case EDIT_DELETE:\n            if (!splice)\n              splice = newSplice(index, [], 0);\n\n            splice.removed.push(old[oldIndex]);\n            oldIndex++;\n            break;\n        }\n      }\n\n      if (splice) {\n        splices.push(splice);\n      }\n      return splices;\n    },\n\n    sharedPrefix: function(current, old, searchLength) {\n      for (var i = 0; i < searchLength; i++)\n        if (!this.equals(current[i], old[i]))\n          return i;\n      return searchLength;\n    },\n\n    sharedSuffix: function(current, old, searchLength) {\n      var index1 = current.length;\n      var index2 = old.length;\n      var count = 0;\n      while (count < searchLength && this.equals(current[--index1], old[--index2]))\n        count++;\n\n      return count;\n    },\n\n    calculateSplices: function(current, previous) {\n      return this.calcSplices(current, 0, current.length, previous, 0,\n                              previous.length);\n    },\n\n    equals: function(currentValue, previousValue) {\n      return currentValue === previousValue;\n    }\n  };\n\n  var arraySplice = new ArraySplice();\n\n  function calcSplices(current, currentStart, currentEnd,\n                       old, oldStart, oldEnd) {\n    return arraySplice.calcSplices(current, currentStart, currentEnd,\n                                   old, oldStart, oldEnd);\n  }\n\n  function intersect(start1, end1, start2, end2) {\n    // Disjoint\n    if (end1 < start2 || end2 < start1)\n      return -1;\n\n    // Adjacent\n    if (end1 == start2 || end2 == start1)\n      return 0;\n\n    // Non-zero intersect, span1 first\n    if (start1 < start2) {\n      if (end1 < end2)\n        return end1 - start2; // Overlap\n      else\n        return end2 - start2; // Contained\n    } else {\n      // Non-zero intersect, span2 first\n      if (end2 < end1)\n        return end2 - start1; // Overlap\n      else\n        return end1 - start1; // Contained\n    }\n  }\n\n  function mergeSplice(splices, index, removed, addedCount) {\n\n    var splice = newSplice(index, removed, addedCount);\n\n    var inserted = false;\n    var insertionOffset = 0;\n\n    for (var i = 0; i < splices.length; i++) {\n      var current = splices[i];\n      current.index += insertionOffset;\n\n      if (inserted)\n        continue;\n\n      var intersectCount = intersect(splice.index,\n                                     splice.index + splice.removed.length,\n                                     current.index,\n                                     current.index + current.addedCount);\n\n      if (intersectCount >= 0) {\n        // Merge the two splices\n\n        splices.splice(i, 1);\n        i--;\n\n        insertionOffset -= current.addedCount - current.removed.length;\n\n        splice.addedCount += current.addedCount - intersectCount;\n        var deleteCount = splice.removed.length +\n                          current.removed.length - intersectCount;\n\n        if (!splice.addedCount && !deleteCount) {\n          // merged splice is a noop. discard.\n          inserted = true;\n        } else {\n          var removed = current.removed;\n\n          if (splice.index < current.index) {\n            // some prefix of splice.removed is prepended to current.removed.\n            var prepend = splice.removed.slice(0, current.index - splice.index);\n            Array.prototype.push.apply(prepend, removed);\n            removed = prepend;\n          }\n\n          if (splice.index + splice.removed.length > current.index + current.addedCount) {\n            // some suffix of splice.removed is appended to current.removed.\n            var append = splice.removed.slice(current.index + current.addedCount - splice.index);\n            Array.prototype.push.apply(removed, append);\n          }\n\n          splice.removed = removed;\n          if (current.index < splice.index) {\n            splice.index = current.index;\n          }\n        }\n      } else if (splice.index < current.index) {\n        // Insert splice here.\n\n        inserted = true;\n\n        splices.splice(i, 0, splice);\n        i++;\n\n        var offset = splice.addedCount - splice.removed.length\n        current.index += offset;\n        insertionOffset += offset;\n      }\n    }\n\n    if (!inserted)\n      splices.push(splice);\n  }\n\n  function createInitialSplices(array, changeRecords) {\n    var splices = [];\n\n    for (var i = 0; i < changeRecords.length; i++) {\n      var record = changeRecords[i];\n      switch(record.type) {\n        case 'splice':\n          mergeSplice(splices, record.index, record.removed.slice(), record.addedCount);\n          break;\n        case 'add':\n        case 'update':\n        case 'delete':\n          if (!isIndex(record.name))\n            continue;\n          var index = toNumber(record.name);\n          if (index < 0)\n            continue;\n          mergeSplice(splices, index, [record.oldValue], 1);\n          break;\n        default:\n          console.error('Unexpected record type: ' + JSON.stringify(record));\n          break;\n      }\n    }\n\n    return splices;\n  }\n\n  function projectArraySplices(array, changeRecords) {\n    var splices = [];\n\n    createInitialSplices(array, changeRecords).forEach(function(splice) {\n      if (splice.addedCount == 1 && splice.removed.length == 1) {\n        if (splice.removed[0] !== array[splice.index])\n          splices.push(splice);\n\n        return\n      };\n\n      splices = splices.concat(calcSplices(array, splice.index, splice.index + splice.addedCount,\n                                           splice.removed, 0, splice.removed.length));\n    });\n\n    return splices;\n  }\n\n  global.Observer = Observer;\n  global.Observer.runEOM_ = runEOM;\n  global.Observer.observerSentinel_ = observerSentinel; // for testing.\n  global.Observer.hasObjectObserve = hasObserve;\n  global.ArrayObserver = ArrayObserver;\n  global.ArrayObserver.calculateSplices = function(current, previous) {\n    return arraySplice.calculateSplices(current, previous);\n  };\n\n  global.ArraySplice = ArraySplice;\n  global.ObjectObserver = ObjectObserver;\n  global.PathObserver = PathObserver;\n  global.CompoundObserver = CompoundObserver;\n  global.Path = Path;\n  global.ObserverTransform = ObserverTransform;\n})(typeof global !== 'undefined' && global && typeof module !== 'undefined' && module ? global : this || window);\n","// select ShadowDOM impl\r\nif (Platform.flags.shadow) {\r\n","// Copyright 2012 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\nwindow.ShadowDOMPolyfill = {};\n\n(function(scope) {\n  'use strict';\n\n  var constructorTable = new WeakMap();\n  var nativePrototypeTable = new WeakMap();\n  var wrappers = Object.create(null);\n\n  // Don't test for eval if document has CSP securityPolicy object and we can\n  // see that eval is not supported. This avoids an error message in console\n  // even when the exception is caught\n  var hasEval = !('securityPolicy' in document) ||\n      document.securityPolicy.allowsEval;\n\n  if (typeof chrome !== 'undefined' && chrome.app && chrome.app.runtime) {\n    hasEval = false;\n  }\n\n  if (hasEval) {\n    try {\n      var f = new Function('', 'return true;');\n      hasEval = f();\n    } catch (ex) {\n      hasEval = false;\n    }\n  }\n\n  function assert(b) {\n    if (!b)\n      throw new Error('Assertion failed');\n  };\n\n  var defineProperty = Object.defineProperty;\n  var getOwnPropertyNames = Object.getOwnPropertyNames;\n  var getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\n\n  function mixin(to, from) {\n    var names = getOwnPropertyNames(from);\n    for (var i = 0; i < names.length; i++) {\n      var name = names[i];\n      defineProperty(to, name, getOwnPropertyDescriptor(from, name));\n    }\n    return to;\n  };\n\n  function mixinStatics(to, from) {\n    var names = getOwnPropertyNames(from);\n    for (var i = 0; i < names.length; i++) {\n      var name = names[i];\n      switch (name) {\n        case 'arguments':\n        case 'caller':\n        case 'length':\n        case 'name':\n        case 'prototype':\n        case 'toString':\n          continue;\n      }\n      defineProperty(to, name, getOwnPropertyDescriptor(from, name));\n    }\n    return to;\n  };\n\n  function oneOf(object, propertyNames) {\n    for (var i = 0; i < propertyNames.length; i++) {\n      if (propertyNames[i] in object)\n        return propertyNames[i];\n    }\n  }\n\n  var nonEnumerableDataDescriptor = {\n    value: undefined,\n    configurable: true,\n    enumerable: false,\n    writable: true\n  };\n\n  function defineNonEnumerableDataProperty(object, name, value) {\n    nonEnumerableDataDescriptor.value = value;\n    defineProperty(object, name, nonEnumerableDataDescriptor);\n  }\n\n  // Mozilla's old DOM bindings are bretty busted:\n  // https://bugzilla.mozilla.org/show_bug.cgi?id=855844\n  // Make sure they are create before we start modifying things.\n  getOwnPropertyNames(window);\n\n  function getWrapperConstructor(node) {\n    var nativePrototype = node.__proto__ || Object.getPrototypeOf(node);\n    var wrapperConstructor = constructorTable.get(nativePrototype);\n    if (wrapperConstructor)\n      return wrapperConstructor;\n\n    var parentWrapperConstructor = getWrapperConstructor(nativePrototype);\n\n    var GeneratedWrapper = createWrapperConstructor(parentWrapperConstructor);\n    registerInternal(nativePrototype, GeneratedWrapper, node);\n\n    return GeneratedWrapper;\n  }\n\n  function addForwardingProperties(nativePrototype, wrapperPrototype) {\n    installProperty(nativePrototype, wrapperPrototype, true);\n  }\n\n  function registerInstanceProperties(wrapperPrototype, instanceObject) {\n    installProperty(instanceObject, wrapperPrototype, false);\n  }\n\n  var isFirefox = /Firefox/.test(navigator.userAgent);\n\n  // This is used as a fallback when getting the descriptor fails in\n  // installProperty.\n  var dummyDescriptor = {\n    get: function() {},\n    set: function(v) {},\n    configurable: true,\n    enumerable: true\n  };\n\n  function isEventHandlerName(name) {\n    return /^on[a-z]+$/.test(name);\n  }\n\n  function isIdentifierName(name) {\n    return /^\\w[a-zA-Z_0-9]*$/.test(name);\n  }\n\n  function getGetter(name) {\n    return hasEval && isIdentifierName(name) ?\n        new Function('return this.impl.' + name) :\n        function() { return this.impl[name]; };\n  }\n\n  function getSetter(name) {\n    return hasEval && isIdentifierName(name) ?\n        new Function('v', 'this.impl.' + name + ' = v') :\n        function(v) { this.impl[name] = v; };\n  }\n\n  function getMethod(name) {\n    return hasEval && isIdentifierName(name) ?\n        new Function('return this.impl.' + name +\n                     '.apply(this.impl, arguments)') :\n        function() { return this.impl[name].apply(this.impl, arguments); };\n  }\n\n  function getDescriptor(source, name) {\n    try {\n      return Object.getOwnPropertyDescriptor(source, name);\n    } catch (ex) {\n      // JSC and V8 both use data properties instead of accessors which can\n      // cause getting the property desciptor to throw an exception.\n      // https://bugs.webkit.org/show_bug.cgi?id=49739\n      return dummyDescriptor;\n    }\n  }\n\n  function installProperty(source, target, allowMethod, opt_blacklist) {\n    var names = getOwnPropertyNames(source);\n    for (var i = 0; i < names.length; i++) {\n      var name = names[i];\n      if (name === 'polymerBlackList_')\n        continue;\n\n      if (name in target)\n        continue;\n\n      if (source.polymerBlackList_ && source.polymerBlackList_[name])\n        continue;\n\n      if (isFirefox) {\n        // Tickle Firefox's old bindings.\n        source.__lookupGetter__(name);\n      }\n      var descriptor = getDescriptor(source, name);\n      var getter, setter;\n      if (allowMethod && typeof descriptor.value === 'function') {\n        target[name] = getMethod(name);\n        continue;\n      }\n\n      var isEvent = isEventHandlerName(name);\n      if (isEvent)\n        getter = scope.getEventHandlerGetter(name);\n      else\n        getter = getGetter(name);\n\n      if (descriptor.writable || descriptor.set) {\n        if (isEvent)\n          setter = scope.getEventHandlerSetter(name);\n        else\n          setter = getSetter(name);\n      }\n\n      defineProperty(target, name, {\n        get: getter,\n        set: setter,\n        configurable: descriptor.configurable,\n        enumerable: descriptor.enumerable\n      });\n    }\n  }\n\n  /**\n   * @param {Function} nativeConstructor\n   * @param {Function} wrapperConstructor\n   * @param {Object=} opt_instance If present, this is used to extract\n   *     properties from an instance object.\n   */\n  function register(nativeConstructor, wrapperConstructor, opt_instance) {\n    var nativePrototype = nativeConstructor.prototype;\n    registerInternal(nativePrototype, wrapperConstructor, opt_instance);\n    mixinStatics(wrapperConstructor, nativeConstructor);\n  }\n\n  function registerInternal(nativePrototype, wrapperConstructor, opt_instance) {\n    var wrapperPrototype = wrapperConstructor.prototype;\n    assert(constructorTable.get(nativePrototype) === undefined);\n\n    constructorTable.set(nativePrototype, wrapperConstructor);\n    nativePrototypeTable.set(wrapperPrototype, nativePrototype);\n\n    addForwardingProperties(nativePrototype, wrapperPrototype);\n    if (opt_instance)\n      registerInstanceProperties(wrapperPrototype, opt_instance);\n\n    defineNonEnumerableDataProperty(\n        wrapperPrototype, 'constructor', wrapperConstructor);\n    // Set it again. Some VMs optimizes objects that are used as prototypes.\n    wrapperConstructor.prototype = wrapperPrototype;\n  }\n\n  function isWrapperFor(wrapperConstructor, nativeConstructor) {\n    return constructorTable.get(nativeConstructor.prototype) ===\n        wrapperConstructor;\n  }\n\n  /**\n   * Creates a generic wrapper constructor based on |object| and its\n   * constructor.\n   * @param {Node} object\n   * @return {Function} The generated constructor.\n   */\n  function registerObject(object) {\n    var nativePrototype = Object.getPrototypeOf(object);\n\n    var superWrapperConstructor = getWrapperConstructor(nativePrototype);\n    var GeneratedWrapper = createWrapperConstructor(superWrapperConstructor);\n    registerInternal(nativePrototype, GeneratedWrapper, object);\n\n    return GeneratedWrapper;\n  }\n\n  function createWrapperConstructor(superWrapperConstructor) {\n    function GeneratedWrapper(node) {\n      superWrapperConstructor.call(this, node);\n    }\n    var p = Object.create(superWrapperConstructor.prototype);\n    p.constructor = GeneratedWrapper;\n    GeneratedWrapper.prototype = p;\n\n    return GeneratedWrapper;\n  }\n\n  var OriginalDOMImplementation = window.DOMImplementation;\n  var OriginalEventTarget = window.EventTarget;\n  var OriginalEvent = window.Event;\n  var OriginalNode = window.Node;\n  var OriginalWindow = window.Window;\n  var OriginalRange = window.Range;\n  var OriginalCanvasRenderingContext2D = window.CanvasRenderingContext2D;\n  var OriginalWebGLRenderingContext = window.WebGLRenderingContext;\n  var OriginalSVGElementInstance = window.SVGElementInstance;\n\n  function isWrapper(object) {\n    return object instanceof wrappers.EventTarget ||\n           object instanceof wrappers.Event ||\n           object instanceof wrappers.Range ||\n           object instanceof wrappers.DOMImplementation ||\n           object instanceof wrappers.CanvasRenderingContext2D ||\n           wrappers.WebGLRenderingContext &&\n               object instanceof wrappers.WebGLRenderingContext;\n  }\n\n  function isNative(object) {\n    return OriginalEventTarget && object instanceof OriginalEventTarget ||\n           object instanceof OriginalNode ||\n           object instanceof OriginalEvent ||\n           object instanceof OriginalWindow ||\n           object instanceof OriginalRange ||\n           object instanceof OriginalDOMImplementation ||\n           object instanceof OriginalCanvasRenderingContext2D ||\n           OriginalWebGLRenderingContext &&\n               object instanceof OriginalWebGLRenderingContext ||\n           OriginalSVGElementInstance &&\n               object instanceof OriginalSVGElementInstance;\n  }\n\n  /**\n   * Wraps a node in a WrapperNode. If there already exists a wrapper for the\n   * |node| that wrapper is returned instead.\n   * @param {Node} node\n   * @return {WrapperNode}\n   */\n  function wrap(impl) {\n    if (impl === null)\n      return null;\n\n    assert(isNative(impl));\n    return impl.polymerWrapper_ ||\n        (impl.polymerWrapper_ = new (getWrapperConstructor(impl))(impl));\n  }\n\n  /**\n   * Unwraps a wrapper and returns the node it is wrapping.\n   * @param {WrapperNode} wrapper\n   * @return {Node}\n   */\n  function unwrap(wrapper) {\n    if (wrapper === null)\n      return null;\n    assert(isWrapper(wrapper));\n    return wrapper.impl;\n  }\n\n  /**\n   * Unwraps object if it is a wrapper.\n   * @param {Object} object\n   * @return {Object} The native implementation object.\n   */\n  function unwrapIfNeeded(object) {\n    return object && isWrapper(object) ? unwrap(object) : object;\n  }\n\n  /**\n   * Wraps object if it is not a wrapper.\n   * @param {Object} object\n   * @return {Object} The wrapper for object.\n   */\n  function wrapIfNeeded(object) {\n    return object && !isWrapper(object) ? wrap(object) : object;\n  }\n\n  /**\n   * Overrides the current wrapper (if any) for node.\n   * @param {Node} node\n   * @param {WrapperNode=} wrapper If left out the wrapper will be created as\n   *     needed next time someone wraps the node.\n   */\n  function rewrap(node, wrapper) {\n    if (wrapper === null)\n      return;\n    assert(isNative(node));\n    assert(wrapper === undefined || isWrapper(wrapper));\n    node.polymerWrapper_ = wrapper;\n  }\n\n  var getterDescriptor = {\n    get: undefined,\n    configurable: true,\n    enumerable: true\n  };\n\n  function defineGetter(constructor, name, getter) {\n    getterDescriptor.get = getter;\n    defineProperty(constructor.prototype, name, getterDescriptor);\n  }\n\n  function defineWrapGetter(constructor, name) {\n    defineGetter(constructor, name, function() {\n      return wrap(this.impl[name]);\n    });\n  }\n\n  /**\n   * Forwards existing methods on the native object to the wrapper methods.\n   * This does not wrap any of the arguments or the return value since the\n   * wrapper implementation already takes care of that.\n   * @param {Array.<Function>} constructors\n   * @parem {Array.<string>} names\n   */\n  function forwardMethodsToWrapper(constructors, names) {\n    constructors.forEach(function(constructor) {\n      names.forEach(function(name) {\n        constructor.prototype[name] = function() {\n          var w = wrapIfNeeded(this);\n          return w[name].apply(w, arguments);\n        };\n      });\n    });\n  }\n\n  scope.assert = assert;\n  scope.constructorTable = constructorTable;\n  scope.defineGetter = defineGetter;\n  scope.defineWrapGetter = defineWrapGetter;\n  scope.forwardMethodsToWrapper = forwardMethodsToWrapper;\n  scope.isWrapper = isWrapper;\n  scope.isWrapperFor = isWrapperFor;\n  scope.mixin = mixin;\n  scope.nativePrototypeTable = nativePrototypeTable;\n  scope.oneOf = oneOf;\n  scope.registerObject = registerObject;\n  scope.registerWrapper = register;\n  scope.rewrap = rewrap;\n  scope.unwrap = unwrap;\n  scope.unwrapIfNeeded = unwrapIfNeeded;\n  scope.wrap = wrap;\n  scope.wrapIfNeeded = wrapIfNeeded;\n  scope.wrappers = wrappers;\n\n})(window.ShadowDOMPolyfill);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is goverened by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(context) {\n  'use strict';\n\n  var OriginalMutationObserver = window.MutationObserver;\n  var callbacks = [];\n  var pending = false;\n  var timerFunc;\n\n  function handle() {\n    pending = false;\n    var copies = callbacks.slice(0);\n    callbacks = [];\n    for (var i = 0; i < copies.length; i++) {\n      (0, copies[i])();\n    }\n  }\n\n  if (OriginalMutationObserver) {\n    var counter = 1;\n    var observer = new OriginalMutationObserver(handle);\n    var textNode = document.createTextNode(counter);\n    observer.observe(textNode, {characterData: true});\n\n    timerFunc = function() {\n      counter = (counter + 1) % 2;\n      textNode.data = counter;\n    };\n\n  } else {\n    timerFunc = window.setImmediate || window.setTimeout;\n  }\n\n  function setEndOfMicrotask(func) {\n    callbacks.push(func);\n    if (pending)\n      return;\n    pending = true;\n    timerFunc(handle, 0);\n  }\n\n  context.setEndOfMicrotask = setEndOfMicrotask;\n\n})(window.ShadowDOMPolyfill);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is goverened by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(scope) {\n  'use strict';\n\n  var setEndOfMicrotask = scope.setEndOfMicrotask\n  var wrapIfNeeded = scope.wrapIfNeeded\n  var wrappers = scope.wrappers;\n\n  var registrationsTable = new WeakMap();\n  var globalMutationObservers = [];\n  var isScheduled = false;\n\n  function scheduleCallback(observer) {\n    if (isScheduled)\n      return;\n    setEndOfMicrotask(notifyObservers);\n    isScheduled = true;\n  }\n\n  // http://dom.spec.whatwg.org/#mutation-observers\n  function notifyObservers() {\n    isScheduled = false;\n\n    do {\n      var notifyList = globalMutationObservers.slice();\n      var anyNonEmpty = false;\n      for (var i = 0; i < notifyList.length; i++) {\n        var mo = notifyList[i];\n        var queue = mo.takeRecords();\n        removeTransientObserversFor(mo);\n        if (queue.length) {\n          mo.callback_(queue, mo);\n          anyNonEmpty = true;\n        }\n      }\n    } while (anyNonEmpty);\n  }\n\n  /**\n   * @param {string} type\n   * @param {Node} target\n   * @constructor\n   */\n  function MutationRecord(type, target) {\n    this.type = type;\n    this.target = target;\n    this.addedNodes = new wrappers.NodeList();\n    this.removedNodes = new wrappers.NodeList();\n    this.previousSibling = null;\n    this.nextSibling = null;\n    this.attributeName = null;\n    this.attributeNamespace = null;\n    this.oldValue = null;\n  }\n\n  /**\n   * Registers transient observers to ancestor and its ancesors for the node\n   * which was removed.\n   * @param {!Node} ancestor\n   * @param {!Node} node\n   */\n  function registerTransientObservers(ancestor, node) {\n    for (; ancestor; ancestor = ancestor.parentNode) {\n      var registrations = registrationsTable.get(ancestor);\n      if (!registrations)\n        continue;\n      for (var i = 0; i < registrations.length; i++) {\n        var registration = registrations[i];\n        if (registration.options.subtree)\n          registration.addTransientObserver(node);\n      }\n    }\n  }\n\n  function removeTransientObserversFor(observer) {\n    for (var i = 0; i < observer.nodes_.length; i++) {\n      var node = observer.nodes_[i];\n      var registrations = registrationsTable.get(node);\n      if (!registrations)\n        return;\n      for (var j = 0; j < registrations.length; j++) {\n        var registration = registrations[j];\n        if (registration.observer === observer)\n          registration.removeTransientObservers();\n      }\n    }\n  }\n\n  // http://dom.spec.whatwg.org/#queue-a-mutation-record\n  function enqueueMutation(target, type, data) {\n    // 1.\n    var interestedObservers = Object.create(null);\n    var associatedStrings = Object.create(null);\n\n    // 2.\n    for (var node = target; node; node = node.parentNode) {\n      // 3.\n      var registrations = registrationsTable.get(node);\n      if (!registrations)\n        continue;\n      for (var j = 0; j < registrations.length; j++) {\n        var registration = registrations[j];\n        var options = registration.options;\n        // 1.\n        if (node !== target && !options.subtree)\n          continue;\n\n        // 2.\n        if (type === 'attributes' && !options.attributes)\n          continue;\n\n        // 3. If type is \"attributes\", options's attributeFilter is present, and\n        // either options's attributeFilter does not contain name or namespace\n        // is non-null, continue.\n        if (type === 'attributes' && options.attributeFilter &&\n            (data.namespace !== null ||\n             options.attributeFilter.indexOf(data.name) === -1)) {\n          continue;\n        }\n\n        // 4.\n        if (type === 'characterData' && !options.characterData)\n          continue;\n\n        // 5.\n        if (type === 'childList' && !options.childList)\n          continue;\n\n        // 6.\n        var observer = registration.observer;\n        interestedObservers[observer.uid_] = observer;\n\n        // 7. If either type is \"attributes\" and options's attributeOldValue is\n        // true, or type is \"characterData\" and options's characterDataOldValue\n        // is true, set the paired string of registered observer's observer in\n        // interested observers to oldValue.\n        if (type === 'attributes' && options.attributeOldValue ||\n            type === 'characterData' && options.characterDataOldValue) {\n          associatedStrings[observer.uid_] = data.oldValue;\n        }\n      }\n    }\n\n    var anyRecordsEnqueued = false;\n\n    // 4.\n    for (var uid in interestedObservers) {\n      var observer = interestedObservers[uid];\n      var record = new MutationRecord(type, target);\n\n      // 2.\n      if ('name' in data && 'namespace' in data) {\n        record.attributeName = data.name;\n        record.attributeNamespace = data.namespace;\n      }\n\n      // 3.\n      if (data.addedNodes)\n        record.addedNodes = data.addedNodes;\n\n      // 4.\n      if (data.removedNodes)\n        record.removedNodes = data.removedNodes;\n\n      // 5.\n      if (data.previousSibling)\n        record.previousSibling = data.previousSibling;\n\n      // 6.\n      if (data.nextSibling)\n        record.nextSibling = data.nextSibling;\n\n      // 7.\n      if (associatedStrings[uid] !== undefined)\n        record.oldValue = associatedStrings[uid];\n\n      // 8.\n      observer.records_.push(record);\n\n      anyRecordsEnqueued = true;\n    }\n\n    if (anyRecordsEnqueued)\n      scheduleCallback();\n  }\n\n  var slice = Array.prototype.slice;\n\n  /**\n   * @param {!Object} options\n   * @constructor\n   */\n  function MutationObserverOptions(options) {\n    this.childList = !!options.childList;\n    this.subtree = !!options.subtree;\n\n    // 1. If either options' attributeOldValue or attributeFilter is present\n    // and options' attributes is omitted, set options' attributes to true.\n    if (!('attributes' in options) &&\n        ('attributeOldValue' in options || 'attributeFilter' in options)) {\n      this.attributes = true;\n    } else {\n      this.attributes = !!options.attributes;\n    }\n\n    // 2. If options' characterDataOldValue is present and options'\n    // characterData is omitted, set options' characterData to true.\n    if ('characterDataOldValue' in options && !('characterData' in options))\n      this.characterData = true;\n    else\n      this.characterData = !!options.characterData;\n\n    // 3. & 4.\n    if (!this.attributes &&\n        (options.attributeOldValue || 'attributeFilter' in options) ||\n        // 5.\n        !this.characterData && options.characterDataOldValue) {\n      throw new TypeError();\n    }\n\n    this.characterData = !!options.characterData;\n    this.attributeOldValue = !!options.attributeOldValue;\n    this.characterDataOldValue = !!options.characterDataOldValue;\n    if ('attributeFilter' in options) {\n      if (options.attributeFilter == null ||\n          typeof options.attributeFilter !== 'object') {\n        throw new TypeError();\n      }\n      this.attributeFilter = slice.call(options.attributeFilter);\n    } else {\n      this.attributeFilter = null;\n    }\n  }\n\n  var uidCounter = 0;\n\n  /**\n   * The class that maps to the DOM MutationObserver interface.\n   * @param {Function} callback.\n   * @constructor\n   */\n  function MutationObserver(callback) {\n    this.callback_ = callback;\n    this.nodes_ = [];\n    this.records_ = [];\n    this.uid_ = ++uidCounter;\n\n    // This will leak. There is no way to implement this without WeakRefs :'(\n    globalMutationObservers.push(this);\n  }\n\n  MutationObserver.prototype = {\n    // http://dom.spec.whatwg.org/#dom-mutationobserver-observe\n    observe: function(target, options) {\n      target = wrapIfNeeded(target);\n\n      var newOptions = new MutationObserverOptions(options);\n\n      // 6.\n      var registration;\n      var registrations = registrationsTable.get(target);\n      if (!registrations)\n        registrationsTable.set(target, registrations = []);\n\n      for (var i = 0; i < registrations.length; i++) {\n        if (registrations[i].observer === this) {\n          registration = registrations[i];\n          // 6.1.\n          registration.removeTransientObservers();\n          // 6.2.\n          registration.options = newOptions;\n        }\n      }\n\n      // 7.\n      if (!registration) {\n        registration = new Registration(this, target, newOptions);\n        registrations.push(registration);\n        this.nodes_.push(target);\n      }\n    },\n\n    // http://dom.spec.whatwg.org/#dom-mutationobserver-disconnect\n    disconnect: function() {\n      this.nodes_.forEach(function(node) {\n        var registrations = registrationsTable.get(node);\n        for (var i = 0; i < registrations.length; i++) {\n          var registration = registrations[i];\n          if (registration.observer === this) {\n            registrations.splice(i, 1);\n            // Each node can only have one registered observer associated with\n            // this observer.\n            break;\n          }\n        }\n      }, this);\n      this.records_ = [];\n    },\n\n    takeRecords: function() {\n      var copyOfRecords = this.records_;\n      this.records_ = [];\n      return copyOfRecords;\n    }\n  };\n\n  /**\n   * Class used to represent a registered observer.\n   * @param {MutationObserver} observer\n   * @param {Node} target\n   * @param {MutationObserverOptions} options\n   * @constructor\n   */\n  function Registration(observer, target, options) {\n    this.observer = observer;\n    this.target = target;\n    this.options = options;\n    this.transientObservedNodes = [];\n  }\n\n  Registration.prototype = {\n    /**\n     * Adds a transient observer on node. The transient observer gets removed\n     * next time we deliver the change records.\n     * @param {Node} node\n     */\n    addTransientObserver: function(node) {\n      // Don't add transient observers on the target itself. We already have all\n      // the required listeners set up on the target.\n      if (node === this.target)\n        return;\n\n      this.transientObservedNodes.push(node);\n      var registrations = registrationsTable.get(node);\n      if (!registrations)\n        registrationsTable.set(node, registrations = []);\n\n      // We know that registrations does not contain this because we already\n      // checked if node === this.target.\n      registrations.push(this);\n    },\n\n    removeTransientObservers: function() {\n      var transientObservedNodes = this.transientObservedNodes;\n      this.transientObservedNodes = [];\n\n      for (var i = 0; i < transientObservedNodes.length; i++) {\n        var node = transientObservedNodes[i];\n        var registrations = registrationsTable.get(node);\n        for (var j = 0; j < registrations.length; j++) {\n          if (registrations[j] === this) {\n            registrations.splice(j, 1);\n            // Each node can only have one registered observer associated with\n            // this observer.\n            break;\n          }\n        }\n      }\n    }\n  };\n\n  scope.enqueueMutation = enqueueMutation;\n  scope.registerTransientObservers = registerTransientObservers;\n  scope.wrappers.MutationObserver = MutationObserver;\n  scope.wrappers.MutationRecord = MutationRecord;\n\n})(window.ShadowDOMPolyfill);\n","/**\n * Copyright 2014 The Polymer Authors. All rights reserved.\n * Use of this source code is goverened by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(scope) {\n  'use strict';\n\n  /**\n   * A tree scope represents the root of a tree. All nodes in a tree point to\n   * the same TreeScope object. The tree scope of a node get set the first time\n   * it is accessed or when a node is added or remove to a tree.\n   * @constructor\n   */\n  function TreeScope(root, parent) {\n    this.root = root;\n    this.parent = parent;\n  }\n\n  TreeScope.prototype = {\n    get renderer() {\n      if (this.root instanceof scope.wrappers.ShadowRoot) {\n        return scope.getRendererForHost(this.root.host);\n      }\n      return null;\n    },\n\n    contains: function(treeScope) {\n      for (; treeScope; treeScope = treeScope.parent) {\n        if (treeScope === this)\n          return true;\n      }\n      return false;\n    }\n  };\n\n  function setTreeScope(node, treeScope) {\n    if (node.treeScope_ !== treeScope) {\n      node.treeScope_ = treeScope;\n      for (var sr = node.shadowRoot; sr; sr = sr.olderShadowRoot) {\n        sr.treeScope_.parent = treeScope;\n      }\n      for (var child = node.firstChild; child; child = child.nextSibling) {\n        setTreeScope(child, treeScope);\n      }\n    }\n  }\n\n  function getTreeScope(node) {\n    if (node.treeScope_)\n      return node.treeScope_;\n    var parent = node.parentNode;\n    var treeScope;\n    if (parent)\n      treeScope = getTreeScope(parent);\n    else\n      treeScope = new TreeScope(node, null);\n    return node.treeScope_ = treeScope;\n  }\n\n  scope.TreeScope = TreeScope;\n  scope.getTreeScope = getTreeScope;\n  scope.setTreeScope = setTreeScope;\n\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var forwardMethodsToWrapper = scope.forwardMethodsToWrapper;\n  var getTreeScope = scope.getTreeScope;\n  var mixin = scope.mixin;\n  var registerWrapper = scope.registerWrapper;\n  var unwrap = scope.unwrap;\n  var wrap = scope.wrap;\n  var wrappers = scope.wrappers;\n\n  var wrappedFuns = new WeakMap();\n  var listenersTable = new WeakMap();\n  var handledEventsTable = new WeakMap();\n  var currentlyDispatchingEvents = new WeakMap();\n  var targetTable = new WeakMap();\n  var currentTargetTable = new WeakMap();\n  var relatedTargetTable = new WeakMap();\n  var eventPhaseTable = new WeakMap();\n  var stopPropagationTable = new WeakMap();\n  var stopImmediatePropagationTable = new WeakMap();\n  var eventHandlersTable = new WeakMap();\n  var eventPathTable = new WeakMap();\n\n  function isShadowRoot(node) {\n    return node instanceof wrappers.ShadowRoot;\n  }\n\n  function isInsertionPoint(node) {\n    var localName = node.localName;\n    return localName === 'content' || localName === 'shadow';\n  }\n\n  function isShadowHost(node) {\n    return !!node.shadowRoot;\n  }\n\n  function getEventParent(node) {\n    var dv;\n    return node.parentNode || (dv = node.defaultView) && wrap(dv) || null;\n  }\n\n  // https://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#dfn-adjusted-parent\n  function calculateParents(node, context, ancestors) {\n    if (ancestors.length)\n      return ancestors.shift();\n\n    // 1.\n    if (isShadowRoot(node))\n      return getInsertionParent(node) || node.host;\n\n    // 2.\n    var eventParents = scope.eventParentsTable.get(node);\n    if (eventParents) {\n      // Copy over the remaining event parents for next iteration.\n      for (var i = 1; i < eventParents.length; i++) {\n        ancestors[i - 1] = eventParents[i];\n      }\n      return eventParents[0];\n    }\n\n    // 3.\n    if (context && isInsertionPoint(node)) {\n      var parentNode = node.parentNode;\n      if (parentNode && isShadowHost(parentNode)) {\n        var trees = scope.getShadowTrees(parentNode);\n        var p = getInsertionParent(context);\n        for (var i = 0; i < trees.length; i++) {\n          if (trees[i].contains(p))\n            return p;\n        }\n      }\n    }\n\n    return getEventParent(node);\n  }\n\n  // https://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#event-retargeting\n  function retarget(node) {\n    var stack = [];  // 1.\n    var ancestor = node;  // 2.\n    var targets = [];\n    var ancestors = [];\n    while (ancestor) {  // 3.\n      var context = null;  // 3.2.\n      // TODO(arv): Change order of these. If the stack is empty we always end\n      // up pushing ancestor, no matter what.\n      if (isInsertionPoint(ancestor)) {  // 3.1.\n        context = topMostNotInsertionPoint(stack);  // 3.1.1.\n        var top = stack[stack.length - 1] || ancestor;  // 3.1.2.\n        stack.push(top);\n      } else if (!stack.length) {\n        stack.push(ancestor);  // 3.3.\n      }\n      var target = stack[stack.length - 1];  // 3.4.\n      targets.push({target: target, currentTarget: ancestor});  // 3.5.\n      if (isShadowRoot(ancestor))  // 3.6.\n        stack.pop();  // 3.6.1.\n\n      ancestor = calculateParents(ancestor, context, ancestors);  // 3.7.\n    }\n    return targets;\n  }\n\n  function topMostNotInsertionPoint(stack) {\n    for (var i = stack.length - 1; i >= 0; i--) {\n      if (!isInsertionPoint(stack[i]))\n        return stack[i];\n    }\n    return null;\n  }\n\n  // https://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#dfn-adjusted-related-target\n  function adjustRelatedTarget(target, related) {\n    var ancestors = [];\n    while (target) {  // 3.\n      var stack = [];  // 3.1.\n      var ancestor = related;  // 3.2.\n      var last = undefined;  // 3.3. Needs to be reset every iteration.\n      while (ancestor) {\n        var context = null;\n        if (!stack.length) {\n          stack.push(ancestor);\n        } else {\n          if (isInsertionPoint(ancestor)) {  // 3.4.3.\n            context = topMostNotInsertionPoint(stack);\n            // isDistributed is more general than checking whether last is\n            // assigned into ancestor.\n            if (isDistributed(last)) {  // 3.4.3.2.\n              var head = stack[stack.length - 1];\n              stack.push(head);\n            }\n          }\n        }\n\n        if (inSameTree(ancestor, target))  // 3.4.4.\n          return stack[stack.length - 1];\n\n        if (isShadowRoot(ancestor))  // 3.4.5.\n          stack.pop();\n\n        last = ancestor;  // 3.4.6.\n        ancestor = calculateParents(ancestor, context, ancestors);  // 3.4.7.\n      }\n      if (isShadowRoot(target))  // 3.5.\n        target = target.host;\n      else\n        target = target.parentNode;  // 3.6.\n    }\n  }\n\n  function getInsertionParent(node) {\n    return scope.insertionParentTable.get(node);\n  }\n\n  function isDistributed(node) {\n    return getInsertionParent(node);\n  }\n\n  function inSameTree(a, b) {\n    return getTreeScope(a) === getTreeScope(b);\n  }\n\n  // pendingError is used to rethrow the first error we got during an event\n  // dispatch. The browser actually reports all errors but to do that we would\n  // need to rethrow the error asynchronously.\n  var pendingError;\n\n  function dispatchOriginalEvent(originalEvent) {\n    // Make sure this event is only dispatched once.\n    if (handledEventsTable.get(originalEvent))\n      return;\n    handledEventsTable.set(originalEvent, true);\n    dispatchEvent(wrap(originalEvent), wrap(originalEvent.target));\n    if (pendingError) {\n      var err = pendingError;\n      pendingError = null;\n      throw err;\n    }\n  }\n\n  function isLoadLikeEvent(event) {\n    switch (event.type) {\n      case 'beforeunload':\n      case 'load':\n      case 'unload':\n        return true;\n    }\n    return false;\n  }\n\n  function dispatchEvent(event, originalWrapperTarget) {\n    if (currentlyDispatchingEvents.get(event))\n      throw new Error('InvalidStateError')\n    currentlyDispatchingEvents.set(event, true);\n\n    // Render to ensure that the event path is correct.\n    scope.renderAllPending();\n    var eventPath = retarget(originalWrapperTarget);\n\n    // For window \"load\" events the \"load\" event is dispatched at the window but\n    // the target is set to the document.\n    //\n    // http://www.whatwg.org/specs/web-apps/current-work/multipage/the-end.html#the-end\n    //\n    // TODO(arv): Find a less hacky way to do this.\n    if (eventPath.length === 2 &&\n        eventPath[0].target instanceof wrappers.Document &&\n        isLoadLikeEvent(event)) {\n      eventPath.shift();\n    }\n\n    eventPathTable.set(event, eventPath);\n\n    if (dispatchCapturing(event, eventPath)) {\n      if (dispatchAtTarget(event, eventPath)) {\n        dispatchBubbling(event, eventPath);\n      }\n    }\n\n    eventPhaseTable.set(event, Event.NONE);\n    currentTargetTable.delete(event, null);\n    currentlyDispatchingEvents.delete(event);\n\n    return event.defaultPrevented;\n  }\n\n  function dispatchCapturing(event, eventPath) {\n    var phase;\n\n    for (var i = eventPath.length - 1; i > 0; i--) {\n      var target = eventPath[i].target;\n      var currentTarget = eventPath[i].currentTarget;\n      if (target === currentTarget)\n        continue;\n\n      phase = Event.CAPTURING_PHASE;\n      if (!invoke(eventPath[i], event, phase))\n        return false;\n    }\n\n    return true;\n  }\n\n  function dispatchAtTarget(event, eventPath) {\n    var phase = Event.AT_TARGET;\n    return invoke(eventPath[0], event, phase);\n  }\n\n  function dispatchBubbling(event, eventPath) {\n    var bubbles = event.bubbles;\n    var phase;\n\n    for (var i = 1; i < eventPath.length; i++) {\n      var target = eventPath[i].target;\n      var currentTarget = eventPath[i].currentTarget;\n      if (target === currentTarget)\n        phase = Event.AT_TARGET;\n      else if (bubbles && !stopImmediatePropagationTable.get(event))\n        phase = Event.BUBBLING_PHASE;\n      else\n        continue;\n\n      if (!invoke(eventPath[i], event, phase))\n        return;\n    }\n  }\n\n  function invoke(tuple, event, phase) {\n    var target = tuple.target;\n    var currentTarget = tuple.currentTarget;\n\n    var listeners = listenersTable.get(currentTarget);\n    if (!listeners)\n      return true;\n\n    if ('relatedTarget' in event) {\n      var originalEvent = unwrap(event);\n      var unwrappedRelatedTarget = originalEvent.relatedTarget;\n\n      // X-Tag sets relatedTarget on a CustomEvent. If they do that there is no\n      // way to have relatedTarget return the adjusted target but worse is that\n      // the originalEvent might not have a relatedTarget so we hit an assert\n      // when we try to wrap it.\n      if (unwrappedRelatedTarget) {\n        // In IE we can get objects that are not EventTargets at this point.\n        // Safari does not have an EventTarget interface so revert to checking\n        // for addEventListener as an approximation.\n        if (unwrappedRelatedTarget instanceof Object &&\n            unwrappedRelatedTarget.addEventListener) {\n          var relatedTarget = wrap(unwrappedRelatedTarget);\n\n          var adjusted = adjustRelatedTarget(currentTarget, relatedTarget);\n          if (adjusted === target)\n            return true;\n        } else {\n          adjusted = null;\n        }\n        relatedTargetTable.set(event, adjusted);\n      }\n    }\n\n    eventPhaseTable.set(event, phase);\n    var type = event.type;\n\n    var anyRemoved = false;\n    targetTable.set(event, target);\n    currentTargetTable.set(event, currentTarget);\n\n    for (var i = 0; i < listeners.length; i++) {\n      var listener = listeners[i];\n      if (listener.removed) {\n        anyRemoved = true;\n        continue;\n      }\n\n      if (listener.type !== type ||\n          !listener.capture && phase === Event.CAPTURING_PHASE ||\n          listener.capture && phase === Event.BUBBLING_PHASE) {\n        continue;\n      }\n\n      try {\n        if (typeof listener.handler === 'function')\n          listener.handler.call(currentTarget, event);\n        else\n          listener.handler.handleEvent(event);\n\n        if (stopImmediatePropagationTable.get(event))\n          return false;\n\n      } catch (ex) {\n        if (!pendingError)\n          pendingError = ex;\n      }\n    }\n\n    if (anyRemoved) {\n      var copy = listeners.slice();\n      listeners.length = 0;\n      for (var i = 0; i < copy.length; i++) {\n        if (!copy[i].removed)\n          listeners.push(copy[i]);\n      }\n    }\n\n    return !stopPropagationTable.get(event);\n  }\n\n  function Listener(type, handler, capture) {\n    this.type = type;\n    this.handler = handler;\n    this.capture = Boolean(capture);\n  }\n  Listener.prototype = {\n    equals: function(that) {\n      return this.handler === that.handler && this.type === that.type &&\n          this.capture === that.capture;\n    },\n    get removed() {\n      return this.handler === null;\n    },\n    remove: function() {\n      this.handler = null;\n    }\n  };\n\n  var OriginalEvent = window.Event;\n  OriginalEvent.prototype.polymerBlackList_ = {\n    returnValue: true,\n    // TODO(arv): keyLocation is part of KeyboardEvent but Firefox does not\n    // support constructable KeyboardEvent so we keep it here for now.\n    keyLocation: true\n  };\n\n  /**\n   * Creates a new Event wrapper or wraps an existin native Event object.\n   * @param {string|Event} type\n   * @param {Object=} options\n   * @constructor\n   */\n  function Event(type, options) {\n    if (type instanceof OriginalEvent) {\n      var impl = type;\n      if (!OriginalBeforeUnloadEvent && impl.type === 'beforeunload')\n        return new BeforeUnloadEvent(impl);\n      this.impl = impl;\n    } else {\n      return wrap(constructEvent(OriginalEvent, 'Event', type, options));\n    }\n  }\n  Event.prototype = {\n    get target() {\n      return targetTable.get(this);\n    },\n    get currentTarget() {\n      return currentTargetTable.get(this);\n    },\n    get eventPhase() {\n      return eventPhaseTable.get(this);\n    },\n    get path() {\n      var nodeList = new wrappers.NodeList();\n      var eventPath = eventPathTable.get(this);\n      if (eventPath) {\n        var index = 0;\n        var lastIndex = eventPath.length - 1;\n        var baseRoot = getTreeScope(currentTargetTable.get(this));\n\n        for (var i = 0; i <= lastIndex; i++) {\n          var currentTarget = eventPath[i].currentTarget;\n          var currentRoot = getTreeScope(currentTarget);\n          if (currentRoot.contains(baseRoot) &&\n              // Make sure we do not add Window to the path.\n              (i !== lastIndex || currentTarget instanceof wrappers.Node)) {\n            nodeList[index++] = currentTarget;\n          }\n        }\n        nodeList.length = index;\n      }\n      return nodeList;\n    },\n    stopPropagation: function() {\n      stopPropagationTable.set(this, true);\n    },\n    stopImmediatePropagation: function() {\n      stopPropagationTable.set(this, true);\n      stopImmediatePropagationTable.set(this, true);\n    }\n  };\n  registerWrapper(OriginalEvent, Event, document.createEvent('Event'));\n\n  function unwrapOptions(options) {\n    if (!options || !options.relatedTarget)\n      return options;\n    return Object.create(options, {\n      relatedTarget: {value: unwrap(options.relatedTarget)}\n    });\n  }\n\n  function registerGenericEvent(name, SuperEvent, prototype) {\n    var OriginalEvent = window[name];\n    var GenericEvent = function(type, options) {\n      if (type instanceof OriginalEvent)\n        this.impl = type;\n      else\n        return wrap(constructEvent(OriginalEvent, name, type, options));\n    };\n    GenericEvent.prototype = Object.create(SuperEvent.prototype);\n    if (prototype)\n      mixin(GenericEvent.prototype, prototype);\n    if (OriginalEvent) {\n      // - Old versions of Safari fails on new FocusEvent (and others?).\n      // - IE does not support event constructors.\n      // - createEvent('FocusEvent') throws in Firefox.\n      // => Try the best practice solution first and fallback to the old way\n      // if needed.\n      try {\n        registerWrapper(OriginalEvent, GenericEvent, new OriginalEvent('temp'));\n      } catch (ex) {\n        registerWrapper(OriginalEvent, GenericEvent,\n                        document.createEvent(name));\n      }\n    }\n    return GenericEvent;\n  }\n\n  var UIEvent = registerGenericEvent('UIEvent', Event);\n  var CustomEvent = registerGenericEvent('CustomEvent', Event);\n\n  var relatedTargetProto = {\n    get relatedTarget() {\n      var relatedTarget = relatedTargetTable.get(this);\n      // relatedTarget can be null.\n      if (relatedTarget !== undefined)\n        return relatedTarget;\n      return wrap(unwrap(this).relatedTarget);\n    }\n  };\n\n  function getInitFunction(name, relatedTargetIndex) {\n    return function() {\n      arguments[relatedTargetIndex] = unwrap(arguments[relatedTargetIndex]);\n      var impl = unwrap(this);\n      impl[name].apply(impl, arguments);\n    };\n  }\n\n  var mouseEventProto = mixin({\n    initMouseEvent: getInitFunction('initMouseEvent', 14)\n  }, relatedTargetProto);\n\n  var focusEventProto = mixin({\n    initFocusEvent: getInitFunction('initFocusEvent', 5)\n  }, relatedTargetProto);\n\n  var MouseEvent = registerGenericEvent('MouseEvent', UIEvent, mouseEventProto);\n  var FocusEvent = registerGenericEvent('FocusEvent', UIEvent, focusEventProto);\n\n  // In case the browser does not support event constructors we polyfill that\n  // by calling `createEvent('Foo')` and `initFooEvent` where the arguments to\n  // `initFooEvent` are derived from the registered default event init dict.\n  var defaultInitDicts = Object.create(null);\n\n  var supportsEventConstructors = (function() {\n    try {\n      new window.FocusEvent('focus');\n    } catch (ex) {\n      return false;\n    }\n    return true;\n  })();\n\n  /**\n   * Constructs a new native event.\n   */\n  function constructEvent(OriginalEvent, name, type, options) {\n    if (supportsEventConstructors)\n      return new OriginalEvent(type, unwrapOptions(options));\n\n    // Create the arguments from the default dictionary.\n    var event = unwrap(document.createEvent(name));\n    var defaultDict = defaultInitDicts[name];\n    var args = [type];\n    Object.keys(defaultDict).forEach(function(key) {\n      var v = options != null && key in options ?\n          options[key] : defaultDict[key];\n      if (key === 'relatedTarget')\n        v = unwrap(v);\n      args.push(v);\n    });\n    event['init' + name].apply(event, args);\n    return event;\n  }\n\n  if (!supportsEventConstructors) {\n    var configureEventConstructor = function(name, initDict, superName) {\n      if (superName) {\n        var superDict = defaultInitDicts[superName];\n        initDict = mixin(mixin({}, superDict), initDict);\n      }\n\n      defaultInitDicts[name] = initDict;\n    };\n\n    // The order of the default event init dictionary keys is important, the\n    // arguments to initFooEvent is derived from that.\n    configureEventConstructor('Event', {bubbles: false, cancelable: false});\n    configureEventConstructor('CustomEvent', {detail: null}, 'Event');\n    configureEventConstructor('UIEvent', {view: null, detail: 0}, 'Event');\n    configureEventConstructor('MouseEvent', {\n      screenX: 0,\n      screenY: 0,\n      clientX: 0,\n      clientY: 0,\n      ctrlKey: false,\n      altKey: false,\n      shiftKey: false,\n      metaKey: false,\n      button: 0,\n      relatedTarget: null\n    }, 'UIEvent');\n    configureEventConstructor('FocusEvent', {relatedTarget: null}, 'UIEvent');\n  }\n\n  // Safari 7 does not yet have BeforeUnloadEvent.\n  // https://bugs.webkit.org/show_bug.cgi?id=120849\n  var OriginalBeforeUnloadEvent = window.BeforeUnloadEvent;\n\n  function BeforeUnloadEvent(impl) {\n    Event.call(this, impl);\n  }\n  BeforeUnloadEvent.prototype = Object.create(Event.prototype);\n  mixin(BeforeUnloadEvent.prototype, {\n    get returnValue() {\n      return this.impl.returnValue;\n    },\n    set returnValue(v) {\n      this.impl.returnValue = v;\n    }\n  });\n\n  if (OriginalBeforeUnloadEvent)\n    registerWrapper(OriginalBeforeUnloadEvent, BeforeUnloadEvent);\n\n  function isValidListener(fun) {\n    if (typeof fun === 'function')\n      return true;\n    return fun && fun.handleEvent;\n  }\n\n  function isMutationEvent(type) {\n    switch (type) {\n      case 'DOMAttrModified':\n      case 'DOMAttributeNameChanged':\n      case 'DOMCharacterDataModified':\n      case 'DOMElementNameChanged':\n      case 'DOMNodeInserted':\n      case 'DOMNodeInsertedIntoDocument':\n      case 'DOMNodeRemoved':\n      case 'DOMNodeRemovedFromDocument':\n      case 'DOMSubtreeModified':\n        return true;\n    }\n    return false;\n  }\n\n  var OriginalEventTarget = window.EventTarget;\n\n  /**\n   * This represents a wrapper for an EventTarget.\n   * @param {!EventTarget} impl The original event target.\n   * @constructor\n   */\n  function EventTarget(impl) {\n    this.impl = impl;\n  }\n\n  // Node and Window have different internal type checks in WebKit so we cannot\n  // use the same method as the original function.\n  var methodNames = [\n    'addEventListener',\n    'removeEventListener',\n    'dispatchEvent'\n  ];\n\n  [Node, Window].forEach(function(constructor) {\n    var p = constructor.prototype;\n    methodNames.forEach(function(name) {\n      Object.defineProperty(p, name + '_', {value: p[name]});\n    });\n  });\n\n  function getTargetToListenAt(wrapper) {\n    if (wrapper instanceof wrappers.ShadowRoot)\n      wrapper = wrapper.host;\n    return unwrap(wrapper);\n  }\n\n  EventTarget.prototype = {\n    addEventListener: function(type, fun, capture) {\n      if (!isValidListener(fun) || isMutationEvent(type))\n        return;\n\n      var listener = new Listener(type, fun, capture);\n      var listeners = listenersTable.get(this);\n      if (!listeners) {\n        listeners = [];\n        listenersTable.set(this, listeners);\n      } else {\n        // Might have a duplicate.\n        for (var i = 0; i < listeners.length; i++) {\n          if (listener.equals(listeners[i]))\n            return;\n        }\n      }\n\n      listeners.push(listener);\n\n      var target = getTargetToListenAt(this);\n      target.addEventListener_(type, dispatchOriginalEvent, true);\n    },\n    removeEventListener: function(type, fun, capture) {\n      capture = Boolean(capture);\n      var listeners = listenersTable.get(this);\n      if (!listeners)\n        return;\n      var count = 0, found = false;\n      for (var i = 0; i < listeners.length; i++) {\n        if (listeners[i].type === type && listeners[i].capture === capture) {\n          count++;\n          if (listeners[i].handler === fun) {\n            found = true;\n            listeners[i].remove();\n          }\n        }\n      }\n\n      if (found && count === 1) {\n        var target = getTargetToListenAt(this);\n        target.removeEventListener_(type, dispatchOriginalEvent, true);\n      }\n    },\n    dispatchEvent: function(event) {\n      // We want to use the native dispatchEvent because it triggers the default\n      // actions (like checking a checkbox). However, if there are no listeners\n      // in the composed tree then there are no events that will trigger and\n      // listeners in the non composed tree that are part of the event path are\n      // not notified.\n      //\n      // If we find out that there are no listeners in the composed tree we add\n      // a temporary listener to the target which makes us get called back even\n      // in that case.\n\n      var nativeEvent = unwrap(event);\n      var eventType = nativeEvent.type;\n\n      // Allow dispatching the same event again. This is safe because if user\n      // code calls this during an existing dispatch of the same event the\n      // native dispatchEvent throws (that is required by the spec).\n      handledEventsTable.set(nativeEvent, false);\n\n      // Force rendering since we prefer native dispatch and that works on the\n      // composed tree.\n      scope.renderAllPending();\n\n      var tempListener;\n      if (!hasListenerInAncestors(this, eventType)) {\n        tempListener = function() {};\n        this.addEventListener(eventType, tempListener, true);\n      }\n\n      try {\n        return unwrap(this).dispatchEvent_(nativeEvent);\n      } finally {\n        if (tempListener)\n          this.removeEventListener(eventType, tempListener, true);\n      }\n    }\n  };\n\n  function hasListener(node, type) {\n    var listeners = listenersTable.get(node);\n    if (listeners) {\n      for (var i = 0; i < listeners.length; i++) {\n        if (!listeners[i].removed && listeners[i].type === type)\n          return true;\n      }\n    }\n    return false;\n  }\n\n  function hasListenerInAncestors(target, type) {\n    for (var node = unwrap(target); node; node = node.parentNode) {\n      if (hasListener(wrap(node), type))\n        return true;\n    }\n    return false;\n  }\n\n  if (OriginalEventTarget)\n    registerWrapper(OriginalEventTarget, EventTarget);\n\n  function wrapEventTargetMethods(constructors) {\n    forwardMethodsToWrapper(constructors, methodNames);\n  }\n\n  var originalElementFromPoint = document.elementFromPoint;\n\n  function elementFromPoint(self, document, x, y) {\n    scope.renderAllPending();\n\n    var element = wrap(originalElementFromPoint.call(document.impl, x, y));\n    var targets = retarget(element, this)\n    for (var i = 0; i < targets.length; i++) {\n      var target = targets[i];\n      if (target.currentTarget === self)\n        return target.target;\n    }\n    return null;\n  }\n\n  /**\n   * Returns a function that is to be used as a getter for `onfoo` properties.\n   * @param {string} name\n   * @return {Function}\n   */\n  function getEventHandlerGetter(name) {\n    return function() {\n      var inlineEventHandlers = eventHandlersTable.get(this);\n      return inlineEventHandlers && inlineEventHandlers[name] &&\n          inlineEventHandlers[name].value || null;\n     };\n  }\n\n  /**\n   * Returns a function that is to be used as a setter for `onfoo` properties.\n   * @param {string} name\n   * @return {Function}\n   */\n  function getEventHandlerSetter(name) {\n    var eventType = name.slice(2);\n    return function(value) {\n      var inlineEventHandlers = eventHandlersTable.get(this);\n      if (!inlineEventHandlers) {\n        inlineEventHandlers = Object.create(null);\n        eventHandlersTable.set(this, inlineEventHandlers);\n      }\n\n      var old = inlineEventHandlers[name];\n      if (old)\n        this.removeEventListener(eventType, old.wrapped, false);\n\n      if (typeof value === 'function') {\n        var wrapped = function(e) {\n          var rv = value.call(this, e);\n          if (rv === false)\n            e.preventDefault();\n          else if (name === 'onbeforeunload' && typeof rv === 'string')\n            e.returnValue = rv;\n          // mouseover uses true for preventDefault but preventDefault for\n          // mouseover is ignored by browsers these day.\n        };\n\n        this.addEventListener(eventType, wrapped, false);\n        inlineEventHandlers[name] = {\n          value: value,\n          wrapped: wrapped\n        };\n      }\n    };\n  }\n\n  scope.adjustRelatedTarget = adjustRelatedTarget;\n  scope.elementFromPoint = elementFromPoint;\n  scope.getEventHandlerGetter = getEventHandlerGetter;\n  scope.getEventHandlerSetter = getEventHandlerSetter;\n  scope.wrapEventTargetMethods = wrapEventTargetMethods;\n  scope.wrappers.BeforeUnloadEvent = BeforeUnloadEvent;\n  scope.wrappers.CustomEvent = CustomEvent;\n  scope.wrappers.Event = Event;\n  scope.wrappers.EventTarget = EventTarget;\n  scope.wrappers.FocusEvent = FocusEvent;\n  scope.wrappers.MouseEvent = MouseEvent;\n  scope.wrappers.UIEvent = UIEvent;\n\n})(window.ShadowDOMPolyfill);\n","// Copyright 2012 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var wrap = scope.wrap;\n\n  var nonEnumDescriptor = {enumerable: false};\n\n  function nonEnum(obj, prop) {\n    Object.defineProperty(obj, prop, nonEnumDescriptor);\n  }\n\n  function NodeList() {\n    this.length = 0;\n    nonEnum(this, 'length');\n  }\n  NodeList.prototype = {\n    item: function(index) {\n      return this[index];\n    }\n  };\n  nonEnum(NodeList.prototype, 'item');\n\n  function wrapNodeList(list) {\n    if (list == null)\n      return list;\n    var wrapperList = new NodeList();\n    for (var i = 0, length = list.length; i < length; i++) {\n      wrapperList[i] = wrap(list[i]);\n    }\n    wrapperList.length = length;\n    return wrapperList;\n  }\n\n  function addWrapNodeListMethod(wrapperConstructor, name) {\n    wrapperConstructor.prototype[name] = function() {\n      return wrapNodeList(this.impl[name].apply(this.impl, arguments));\n    };\n  }\n\n  scope.wrappers.NodeList = NodeList;\n  scope.addWrapNodeListMethod = addWrapNodeListMethod;\n  scope.wrapNodeList = wrapNodeList;\n\n})(window.ShadowDOMPolyfill);\n","/*\n * Copyright 2014 The Polymer Authors. All rights reserved.\n * Use of this source code is goverened by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(scope) {\n  'use strict';\n\n  // TODO(arv): Implement.\n\n  scope.wrapHTMLCollection = scope.wrapNodeList;\n  scope.wrappers.HTMLCollection = scope.wrappers.NodeList;\n\n})(window.ShadowDOMPolyfill);\n","/**\n * Copyright 2012 The Polymer Authors. All rights reserved.\n * Use of this source code is goverened by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(scope) {\n  'use strict';\n\n  var EventTarget = scope.wrappers.EventTarget;\n  var NodeList = scope.wrappers.NodeList;\n  var TreeScope = scope.TreeScope;\n  var assert = scope.assert;\n  var defineWrapGetter = scope.defineWrapGetter;\n  var enqueueMutation = scope.enqueueMutation;\n  var getTreeScope = scope.getTreeScope;\n  var isWrapper = scope.isWrapper;\n  var mixin = scope.mixin;\n  var registerTransientObservers = scope.registerTransientObservers;\n  var registerWrapper = scope.registerWrapper;\n  var setTreeScope = scope.setTreeScope;\n  var unwrap = scope.unwrap;\n  var unwrapIfNeeded = scope.unwrapIfNeeded;\n  var wrap = scope.wrap;\n  var wrapIfNeeded = scope.wrapIfNeeded;\n  var wrappers = scope.wrappers;\n\n  function assertIsNodeWrapper(node) {\n    assert(node instanceof Node);\n  }\n\n  function createOneElementNodeList(node) {\n    var nodes = new NodeList();\n    nodes[0] = node;\n    nodes.length = 1;\n    return nodes;\n  }\n\n  var surpressMutations = false;\n\n  /**\n   * Called before node is inserted into a node to enqueue its removal from its\n   * old parent.\n   * @param {!Node} node The node that is about to be removed.\n   * @param {!Node} parent The parent node that the node is being removed from.\n   * @param {!NodeList} nodes The collected nodes.\n   */\n  function enqueueRemovalForInsertedNodes(node, parent, nodes) {\n    enqueueMutation(parent, 'childList', {\n      removedNodes: nodes,\n      previousSibling: node.previousSibling,\n      nextSibling: node.nextSibling\n    });\n  }\n\n  function enqueueRemovalForInsertedDocumentFragment(df, nodes) {\n    enqueueMutation(df, 'childList', {\n      removedNodes: nodes\n    });\n  }\n\n  /**\n   * Collects nodes from a DocumentFragment or a Node for removal followed\n   * by an insertion.\n   *\n   * This updates the internal pointers for node, previousNode and nextNode.\n   */\n  function collectNodes(node, parentNode, previousNode, nextNode) {\n    if (node instanceof DocumentFragment) {\n      var nodes = collectNodesForDocumentFragment(node);\n\n      // The extra loop is to work around bugs with DocumentFragments in IE.\n      surpressMutations = true;\n      for (var i = nodes.length - 1; i >= 0; i--) {\n        node.removeChild(nodes[i]);\n        nodes[i].parentNode_ = parentNode;\n      }\n      surpressMutations = false;\n\n      for (var i = 0; i < nodes.length; i++) {\n        nodes[i].previousSibling_ = nodes[i - 1] || previousNode;\n        nodes[i].nextSibling_ = nodes[i + 1] || nextNode;\n      }\n\n      if (previousNode)\n        previousNode.nextSibling_ = nodes[0];\n      if (nextNode)\n        nextNode.previousSibling_ = nodes[nodes.length - 1];\n\n      return nodes;\n    }\n\n    var nodes = createOneElementNodeList(node);\n    var oldParent = node.parentNode;\n    if (oldParent) {\n      // This will enqueue the mutation record for the removal as needed.\n      oldParent.removeChild(node);\n    }\n\n    node.parentNode_ = parentNode;\n    node.previousSibling_ = previousNode;\n    node.nextSibling_ = nextNode;\n    if (previousNode)\n      previousNode.nextSibling_ = node;\n    if (nextNode)\n      nextNode.previousSibling_ = node;\n\n    return nodes;\n  }\n\n  function collectNodesNative(node) {\n    if (node instanceof DocumentFragment)\n      return collectNodesForDocumentFragment(node);\n\n    var nodes = createOneElementNodeList(node);\n    var oldParent = node.parentNode;\n    if (oldParent)\n      enqueueRemovalForInsertedNodes(node, oldParent, nodes);\n    return nodes;\n  }\n\n  function collectNodesForDocumentFragment(node) {\n    var nodes = new NodeList();\n    var i = 0;\n    for (var child = node.firstChild; child; child = child.nextSibling) {\n      nodes[i++] = child;\n    }\n    nodes.length = i;\n    enqueueRemovalForInsertedDocumentFragment(node, nodes);\n    return nodes;\n  }\n\n  function snapshotNodeList(nodeList) {\n    // NodeLists are not live at the moment so just return the same object.\n    return nodeList;\n  }\n\n  // http://dom.spec.whatwg.org/#node-is-inserted\n  function nodeWasAdded(node, treeScope) {\n    setTreeScope(node, treeScope);\n    node.nodeIsInserted_();\n  }\n\n  function nodesWereAdded(nodes, parent) {\n    var treeScope = getTreeScope(parent);\n    for (var i = 0; i < nodes.length; i++) {\n      nodeWasAdded(nodes[i], treeScope);\n    }\n  }\n\n  // http://dom.spec.whatwg.org/#node-is-removed\n  function nodeWasRemoved(node) {\n    setTreeScope(node, new TreeScope(node, null));\n  }\n\n  function nodesWereRemoved(nodes) {\n    for (var i = 0; i < nodes.length; i++) {\n      nodeWasRemoved(nodes[i]);\n    }\n  }\n\n  function ensureSameOwnerDocument(parent, child) {\n    var ownerDoc = parent.nodeType === Node.DOCUMENT_NODE ?\n        parent : parent.ownerDocument;\n    if (ownerDoc !== child.ownerDocument)\n      ownerDoc.adoptNode(child);\n  }\n\n  function adoptNodesIfNeeded(owner, nodes) {\n    if (!nodes.length)\n      return;\n\n    var ownerDoc = owner.ownerDocument;\n\n    // All nodes have the same ownerDocument when we get here.\n    if (ownerDoc === nodes[0].ownerDocument)\n      return;\n\n    for (var i = 0; i < nodes.length; i++) {\n      scope.adoptNodeNoRemove(nodes[i], ownerDoc);\n    }\n  }\n\n  function unwrapNodesForInsertion(owner, nodes) {\n    adoptNodesIfNeeded(owner, nodes);\n    var length = nodes.length;\n\n    if (length === 1)\n      return unwrap(nodes[0]);\n\n    var df = unwrap(owner.ownerDocument.createDocumentFragment());\n    for (var i = 0; i < length; i++) {\n      df.appendChild(unwrap(nodes[i]));\n    }\n    return df;\n  }\n\n  function clearChildNodes(wrapper) {\n    if (wrapper.firstChild_ !== undefined) {\n      var child = wrapper.firstChild_;\n      while (child) {\n        var tmp = child;\n        child = child.nextSibling_;\n        tmp.parentNode_ = tmp.previousSibling_ = tmp.nextSibling_ = undefined;\n      }\n    }\n    wrapper.firstChild_ = wrapper.lastChild_ = undefined;\n  }\n\n  function removeAllChildNodes(wrapper) {\n    if (wrapper.invalidateShadowRenderer()) {\n      var childWrapper = wrapper.firstChild;\n      while (childWrapper) {\n        assert(childWrapper.parentNode === wrapper);\n        var nextSibling = childWrapper.nextSibling;\n        var childNode = unwrap(childWrapper);\n        var parentNode = childNode.parentNode;\n        if (parentNode)\n          originalRemoveChild.call(parentNode, childNode);\n        childWrapper.previousSibling_ = childWrapper.nextSibling_ =\n            childWrapper.parentNode_ = null;\n        childWrapper = nextSibling;\n      }\n      wrapper.firstChild_ = wrapper.lastChild_ = null;\n    } else {\n      var node = unwrap(wrapper);\n      var child = node.firstChild;\n      var nextSibling;\n      while (child) {\n        nextSibling = child.nextSibling;\n        originalRemoveChild.call(node, child);\n        child = nextSibling;\n      }\n    }\n  }\n\n  function invalidateParent(node) {\n    var p = node.parentNode;\n    return p && p.invalidateShadowRenderer();\n  }\n\n  function cleanupNodes(nodes) {\n    for (var i = 0, n; i < nodes.length; i++) {\n      n = nodes[i];\n      n.parentNode.removeChild(n);\n    }\n  }\n\n  var originalImportNode = document.importNode;\n  var originalCloneNode = window.Node.prototype.cloneNode;\n\n  function cloneNode(node, deep, opt_doc) {\n    var clone;\n    if (opt_doc)\n      clone = wrap(originalImportNode.call(opt_doc, node.impl, false));\n    else\n      clone = wrap(originalCloneNode.call(node.impl, false));\n\n    if (deep) {\n      for (var child = node.firstChild; child; child = child.nextSibling) {\n        clone.appendChild(cloneNode(child, true, opt_doc));\n      }\n\n      if (node instanceof wrappers.HTMLTemplateElement) {\n        var cloneContent = clone.content;\n        for (var child = node.content.firstChild;\n             child;\n             child = child.nextSibling) {\n         cloneContent.appendChild(cloneNode(child, true, opt_doc));\n        }\n      }\n    }\n    // TODO(arv): Some HTML elements also clone other data like value.\n    return clone;\n  }\n\n  function contains(self, child) {\n    if (!child || getTreeScope(self) !== getTreeScope(child))\n      return false;\n\n    for (var node = child; node; node = node.parentNode) {\n      if (node === self)\n        return true;\n    }\n    return false;\n  }\n\n  var OriginalNode = window.Node;\n\n  /**\n   * This represents a wrapper of a native DOM node.\n   * @param {!Node} original The original DOM node, aka, the visual DOM node.\n   * @constructor\n   * @extends {EventTarget}\n   */\n  function Node(original) {\n    assert(original instanceof OriginalNode);\n\n    EventTarget.call(this, original);\n\n    // These properties are used to override the visual references with the\n    // logical ones. If the value is undefined it means that the logical is the\n    // same as the visual.\n\n    /**\n     * @type {Node|undefined}\n     * @private\n     */\n    this.parentNode_ = undefined;\n\n    /**\n     * @type {Node|undefined}\n     * @private\n     */\n    this.firstChild_ = undefined;\n\n    /**\n     * @type {Node|undefined}\n     * @private\n     */\n    this.lastChild_ = undefined;\n\n    /**\n     * @type {Node|undefined}\n     * @private\n     */\n    this.nextSibling_ = undefined;\n\n    /**\n     * @type {Node|undefined}\n     * @private\n     */\n    this.previousSibling_ = undefined;\n\n    this.treeScope_ = undefined;\n  }\n\n  var OriginalDocumentFragment = window.DocumentFragment;\n  var originalAppendChild = OriginalNode.prototype.appendChild;\n  var originalCompareDocumentPosition =\n      OriginalNode.prototype.compareDocumentPosition;\n  var originalInsertBefore = OriginalNode.prototype.insertBefore;\n  var originalRemoveChild = OriginalNode.prototype.removeChild;\n  var originalReplaceChild = OriginalNode.prototype.replaceChild;\n\n  var isIe = /Trident/.test(navigator.userAgent);\n\n  var removeChildOriginalHelper = isIe ?\n      function(parent, child) {\n        try {\n          originalRemoveChild.call(parent, child);\n        } catch (ex) {\n          if (!(parent instanceof OriginalDocumentFragment))\n            throw ex;\n        }\n      } :\n      function(parent, child) {\n        originalRemoveChild.call(parent, child);\n      };\n\n  Node.prototype = Object.create(EventTarget.prototype);\n  mixin(Node.prototype, {\n    appendChild: function(childWrapper) {\n      return this.insertBefore(childWrapper, null);\n    },\n\n    insertBefore: function(childWrapper, refWrapper) {\n      assertIsNodeWrapper(childWrapper);\n\n      var refNode;\n      if (refWrapper) {\n        if (isWrapper(refWrapper)) {\n          refNode = unwrap(refWrapper);\n        } else {\n          refNode = refWrapper;\n          refWrapper = wrap(refNode);\n        }\n      } else {\n        refWrapper = null;\n        refNode = null;\n      }\n\n      refWrapper && assert(refWrapper.parentNode === this);\n\n      var nodes;\n      var previousNode =\n          refWrapper ? refWrapper.previousSibling : this.lastChild;\n\n      var useNative = !this.invalidateShadowRenderer() &&\n                      !invalidateParent(childWrapper);\n\n      if (useNative)\n        nodes = collectNodesNative(childWrapper);\n      else\n        nodes = collectNodes(childWrapper, this, previousNode, refWrapper);\n\n      if (useNative) {\n        ensureSameOwnerDocument(this, childWrapper);\n        clearChildNodes(this);\n        originalInsertBefore.call(this.impl, unwrap(childWrapper), refNode);\n      } else {\n        if (!previousNode)\n          this.firstChild_ = nodes[0];\n        if (!refWrapper)\n          this.lastChild_ = nodes[nodes.length - 1];\n\n        var parentNode = refNode ? refNode.parentNode : this.impl;\n\n        // insertBefore refWrapper no matter what the parent is?\n        if (parentNode) {\n          originalInsertBefore.call(parentNode,\n              unwrapNodesForInsertion(this, nodes), refNode);\n        } else {\n          adoptNodesIfNeeded(this, nodes);\n        }\n      }\n\n      enqueueMutation(this, 'childList', {\n        addedNodes: nodes,\n        nextSibling: refWrapper,\n        previousSibling: previousNode\n      });\n\n      nodesWereAdded(nodes, this);\n\n      return childWrapper;\n    },\n\n    removeChild: function(childWrapper) {\n      assertIsNodeWrapper(childWrapper);\n      if (childWrapper.parentNode !== this) {\n        // IE has invalid DOM trees at times.\n        var found = false;\n        var childNodes = this.childNodes;\n        for (var ieChild = this.firstChild; ieChild;\n             ieChild = ieChild.nextSibling) {\n          if (ieChild === childWrapper) {\n            found = true;\n            break;\n          }\n        }\n        if (!found) {\n          // TODO(arv): DOMException\n          throw new Error('NotFoundError');\n        }\n      }\n\n      var childNode = unwrap(childWrapper);\n      var childWrapperNextSibling = childWrapper.nextSibling;\n      var childWrapperPreviousSibling = childWrapper.previousSibling;\n\n      if (this.invalidateShadowRenderer()) {\n        // We need to remove the real node from the DOM before updating the\n        // pointers. This is so that that mutation event is dispatched before\n        // the pointers have changed.\n        var thisFirstChild = this.firstChild;\n        var thisLastChild = this.lastChild;\n\n        var parentNode = childNode.parentNode;\n        if (parentNode)\n          removeChildOriginalHelper(parentNode, childNode);\n\n        if (thisFirstChild === childWrapper)\n          this.firstChild_ = childWrapperNextSibling;\n        if (thisLastChild === childWrapper)\n          this.lastChild_ = childWrapperPreviousSibling;\n        if (childWrapperPreviousSibling)\n          childWrapperPreviousSibling.nextSibling_ = childWrapperNextSibling;\n        if (childWrapperNextSibling) {\n          childWrapperNextSibling.previousSibling_ =\n              childWrapperPreviousSibling;\n        }\n\n        childWrapper.previousSibling_ = childWrapper.nextSibling_ =\n            childWrapper.parentNode_ = undefined;\n      } else {\n        clearChildNodes(this);\n        removeChildOriginalHelper(this.impl, childNode);\n      }\n\n      if (!surpressMutations) {\n        enqueueMutation(this, 'childList', {\n          removedNodes: createOneElementNodeList(childWrapper),\n          nextSibling: childWrapperNextSibling,\n          previousSibling: childWrapperPreviousSibling\n        });\n      }\n\n      registerTransientObservers(this, childWrapper);\n\n      return childWrapper;\n    },\n\n    replaceChild: function(newChildWrapper, oldChildWrapper) {\n      assertIsNodeWrapper(newChildWrapper);\n\n      var oldChildNode;\n      if (isWrapper(oldChildWrapper)) {\n        oldChildNode = unwrap(oldChildWrapper);\n      } else {\n        oldChildNode = oldChildWrapper;\n        oldChildWrapper = wrap(oldChildNode);\n      }\n\n      if (oldChildWrapper.parentNode !== this) {\n        // TODO(arv): DOMException\n        throw new Error('NotFoundError');\n      }\n\n      var nextNode = oldChildWrapper.nextSibling;\n      var previousNode = oldChildWrapper.previousSibling;\n      var nodes;\n\n      var useNative = !this.invalidateShadowRenderer() &&\n                      !invalidateParent(newChildWrapper);\n\n      if (useNative) {\n        nodes = collectNodesNative(newChildWrapper);\n      } else {\n        if (nextNode === newChildWrapper)\n          nextNode = newChildWrapper.nextSibling;\n        nodes = collectNodes(newChildWrapper, this, previousNode, nextNode);\n      }\n\n      if (!useNative) {\n        if (this.firstChild === oldChildWrapper)\n          this.firstChild_ = nodes[0];\n        if (this.lastChild === oldChildWrapper)\n          this.lastChild_ = nodes[nodes.length - 1];\n\n        oldChildWrapper.previousSibling_ = oldChildWrapper.nextSibling_ =\n            oldChildWrapper.parentNode_ = undefined;\n\n        // replaceChild no matter what the parent is?\n        if (oldChildNode.parentNode) {\n          originalReplaceChild.call(\n              oldChildNode.parentNode,\n              unwrapNodesForInsertion(this, nodes),\n              oldChildNode);\n        }\n      } else {\n        ensureSameOwnerDocument(this, newChildWrapper);\n        clearChildNodes(this);\n        originalReplaceChild.call(this.impl, unwrap(newChildWrapper),\n                                  oldChildNode);\n      }\n\n      enqueueMutation(this, 'childList', {\n        addedNodes: nodes,\n        removedNodes: createOneElementNodeList(oldChildWrapper),\n        nextSibling: nextNode,\n        previousSibling: previousNode\n      });\n\n      nodeWasRemoved(oldChildWrapper);\n      nodesWereAdded(nodes, this);\n\n      return oldChildWrapper;\n    },\n\n    /**\n     * Called after a node was inserted. Subclasses override this to invalidate\n     * the renderer as needed.\n     * @private\n     */\n    nodeIsInserted_: function() {\n      for (var child = this.firstChild; child; child = child.nextSibling) {\n        child.nodeIsInserted_();\n      }\n    },\n\n    hasChildNodes: function() {\n      return this.firstChild !== null;\n    },\n\n    /** @type {Node} */\n    get parentNode() {\n      // If the parentNode has not been overridden, use the original parentNode.\n      return this.parentNode_ !== undefined ?\n          this.parentNode_ : wrap(this.impl.parentNode);\n    },\n\n    /** @type {Node} */\n    get firstChild() {\n      return this.firstChild_ !== undefined ?\n          this.firstChild_ : wrap(this.impl.firstChild);\n    },\n\n    /** @type {Node} */\n    get lastChild() {\n      return this.lastChild_ !== undefined ?\n          this.lastChild_ : wrap(this.impl.lastChild);\n    },\n\n    /** @type {Node} */\n    get nextSibling() {\n      return this.nextSibling_ !== undefined ?\n          this.nextSibling_ : wrap(this.impl.nextSibling);\n    },\n\n    /** @type {Node} */\n    get previousSibling() {\n      return this.previousSibling_ !== undefined ?\n          this.previousSibling_ : wrap(this.impl.previousSibling);\n    },\n\n    get parentElement() {\n      var p = this.parentNode;\n      while (p && p.nodeType !== Node.ELEMENT_NODE) {\n        p = p.parentNode;\n      }\n      return p;\n    },\n\n    get textContent() {\n      // TODO(arv): This should fallback to this.impl.textContent if there\n      // are no shadow trees below or above the context node.\n      var s = '';\n      for (var child = this.firstChild; child; child = child.nextSibling) {\n        if (child.nodeType != Node.COMMENT_NODE) {\n          s += child.textContent;\n        }\n      }\n      return s;\n    },\n    set textContent(textContent) {\n      var removedNodes = snapshotNodeList(this.childNodes);\n\n      if (this.invalidateShadowRenderer()) {\n        removeAllChildNodes(this);\n        if (textContent !== '') {\n          var textNode = this.impl.ownerDocument.createTextNode(textContent);\n          this.appendChild(textNode);\n        }\n      } else {\n        clearChildNodes(this);\n        this.impl.textContent = textContent;\n      }\n\n      var addedNodes = snapshotNodeList(this.childNodes);\n\n      enqueueMutation(this, 'childList', {\n        addedNodes: addedNodes,\n        removedNodes: removedNodes\n      });\n\n      nodesWereRemoved(removedNodes);\n      nodesWereAdded(addedNodes, this);\n    },\n\n    get childNodes() {\n      var wrapperList = new NodeList();\n      var i = 0;\n      for (var child = this.firstChild; child; child = child.nextSibling) {\n        wrapperList[i++] = child;\n      }\n      wrapperList.length = i;\n      return wrapperList;\n    },\n\n    cloneNode: function(deep) {\n      return cloneNode(this, deep);\n    },\n\n    contains: function(child) {\n      return contains(this, wrapIfNeeded(child));\n    },\n\n    compareDocumentPosition: function(otherNode) {\n      // This only wraps, it therefore only operates on the composed DOM and not\n      // the logical DOM.\n      return originalCompareDocumentPosition.call(this.impl,\n                                                  unwrapIfNeeded(otherNode));\n    },\n\n    normalize: function() {\n      var nodes = snapshotNodeList(this.childNodes);\n      var remNodes = [];\n      var s = '';\n      var modNode;\n\n      for (var i = 0, n; i < nodes.length; i++) {\n        n = nodes[i];\n        if (n.nodeType === Node.TEXT_NODE) {\n          if (!modNode && !n.data.length)\n            this.removeNode(n);\n          else if (!modNode)\n            modNode = n;\n          else {\n            s += n.data;\n            remNodes.push(n);\n          }\n        } else {\n          if (modNode && remNodes.length) {\n            modNode.data += s;\n            cleanUpNodes(remNodes);\n          }\n          remNodes = [];\n          s = '';\n          modNode = null;\n          if (n.childNodes.length)\n            n.normalize();\n        }\n      }\n\n      // handle case where >1 text nodes are the last children\n      if (modNode && remNodes.length) {\n        modNode.data += s;\n        cleanupNodes(remNodes);\n      }\n    }\n  });\n\n  defineWrapGetter(Node, 'ownerDocument');\n\n  // We use a DocumentFragment as a base and then delete the properties of\n  // DocumentFragment.prototype from the wrapper Node. Since delete makes\n  // objects slow in some JS engines we recreate the prototype object.\n  registerWrapper(OriginalNode, Node, document.createDocumentFragment());\n  delete Node.prototype.querySelector;\n  delete Node.prototype.querySelectorAll;\n  Node.prototype = mixin(Object.create(EventTarget.prototype), Node.prototype);\n\n  scope.cloneNode = cloneNode;\n  scope.nodeWasAdded = nodeWasAdded;\n  scope.nodeWasRemoved = nodeWasRemoved;\n  scope.nodesWereAdded = nodesWereAdded;\n  scope.nodesWereRemoved = nodesWereRemoved;\n  scope.snapshotNodeList = snapshotNodeList;\n  scope.wrappers.Node = Node;\n\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is governed by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var HTMLCollection = scope.wrappers.HTMLCollection;\n  var NodeList = scope.wrappers.NodeList;\n\n  function findOne(node, selector) {\n    var m, el = node.firstElementChild;\n    while (el) {\n      if (el.matches(selector))\n        return el;\n      m = findOne(el, selector);\n      if (m)\n        return m;\n      el = el.nextElementSibling;\n    }\n    return null;\n  }\n\n  function matchesSelector(el, selector) {\n    return el.matches(selector);\n  }\n\n  var XHTML_NS = 'http://www.w3.org/1999/xhtml';\n\n  function matchesTagName(el, localName, localNameLowerCase) {\n    var ln = el.localName;\n    return ln === localName ||\n        ln === localNameLowerCase && el.namespaceURI === XHTML_NS;\n  }\n\n  function matchesEveryThing() {\n    return true;\n  }\n\n  function matchesLocalName(el, localName) {\n    return el.localName === localName;\n  }\n\n  function matchesNameSpace(el, ns) {\n    return el.namespaceURI === ns;\n  }\n\n  function matchesLocalNameNS(el, ns, localName) {\n    return el.namespaceURI === ns && el.localName === localName;\n  }\n\n  function findElements(node, result, p, arg0, arg1) {\n    var el = node.firstElementChild;\n    while (el) {\n      if (p(el, arg0, arg1))\n        result[result.length++] = el;\n      findElements(el, result, p, arg0, arg1);\n      el = el.nextElementSibling;\n    }\n    return result;\n  }\n\n  // find and findAll will only match Simple Selectors,\n  // Structural Pseudo Classes are not guarenteed to be correct\n  // http://www.w3.org/TR/css3-selectors/#simple-selectors\n\n  var SelectorsInterface = {\n    querySelector: function(selector) {\n      return findOne(this, selector);\n    },\n    querySelectorAll: function(selector) {\n      return findElements(this, new NodeList(), matchesSelector, selector);\n    }\n  };\n\n  var GetElementsByInterface = {\n    getElementsByTagName: function(localName) {\n      var result = new HTMLCollection();\n      if (localName === '*')\n        return findElements(this, result, matchesEveryThing);\n\n      return findElements(this, result,\n          matchesTagName,\n          localName,\n          localName.toLowerCase());\n    },\n\n    getElementsByClassName: function(className) {\n      // TODO(arv): Check className?\n      return this.querySelectorAll('.' + className);\n    },\n\n    getElementsByTagNameNS: function(ns, localName) {\n      var result = new HTMLCollection();\n\n      if (ns === '') {\n        ns = null;\n      } else if (ns === '*') {\n        if (localName === '*')\n          return findElements(this, result, matchesEveryThing);\n        return findElements(this, result, matchesLocalName, localName);\n      }\n\n      if (localName === '*')\n        return findElements(this, result, matchesNameSpace, ns);\n\n      return findElements(this, result, matchesLocalNameNS, ns, localName);\n    }\n  };\n\n  scope.GetElementsByInterface = GetElementsByInterface;\n  scope.SelectorsInterface = SelectorsInterface;\n\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var NodeList = scope.wrappers.NodeList;\n\n  function forwardElement(node) {\n    while (node && node.nodeType !== Node.ELEMENT_NODE) {\n      node = node.nextSibling;\n    }\n    return node;\n  }\n\n  function backwardsElement(node) {\n    while (node && node.nodeType !== Node.ELEMENT_NODE) {\n      node = node.previousSibling;\n    }\n    return node;\n  }\n\n  var ParentNodeInterface = {\n    get firstElementChild() {\n      return forwardElement(this.firstChild);\n    },\n\n    get lastElementChild() {\n      return backwardsElement(this.lastChild);\n    },\n\n    get childElementCount() {\n      var count = 0;\n      for (var child = this.firstElementChild;\n           child;\n           child = child.nextElementSibling) {\n        count++;\n      }\n      return count;\n    },\n\n    get children() {\n      var wrapperList = new NodeList();\n      var i = 0;\n      for (var child = this.firstElementChild;\n           child;\n           child = child.nextElementSibling) {\n        wrapperList[i++] = child;\n      }\n      wrapperList.length = i;\n      return wrapperList;\n    },\n\n    remove: function() {\n      var p = this.parentNode;\n      if (p)\n        p.removeChild(this);\n    }\n  };\n\n  var ChildNodeInterface = {\n    get nextElementSibling() {\n      return forwardElement(this.nextSibling);\n    },\n\n    get previousElementSibling() {\n      return backwardsElement(this.previousSibling);\n    }\n  };\n\n  scope.ChildNodeInterface = ChildNodeInterface;\n  scope.ParentNodeInterface = ParentNodeInterface;\n\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var ChildNodeInterface = scope.ChildNodeInterface;\n  var Node = scope.wrappers.Node;\n  var enqueueMutation = scope.enqueueMutation;\n  var mixin = scope.mixin;\n  var registerWrapper = scope.registerWrapper;\n\n  var OriginalCharacterData = window.CharacterData;\n\n  function CharacterData(node) {\n    Node.call(this, node);\n  }\n  CharacterData.prototype = Object.create(Node.prototype);\n  mixin(CharacterData.prototype, {\n    get textContent() {\n      return this.data;\n    },\n    set textContent(value) {\n      this.data = value;\n    },\n    get data() {\n      return this.impl.data;\n    },\n    set data(value) {\n      var oldValue = this.impl.data;\n      enqueueMutation(this, 'characterData', {\n        oldValue: oldValue\n      });\n      this.impl.data = value;\n    }\n  });\n\n  mixin(CharacterData.prototype, ChildNodeInterface);\n\n  registerWrapper(OriginalCharacterData, CharacterData,\n                  document.createTextNode(''));\n\n  scope.wrappers.CharacterData = CharacterData;\n})(window.ShadowDOMPolyfill);\n","// Copyright 2014 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var CharacterData = scope.wrappers.CharacterData;\n  var enqueueMutation = scope.enqueueMutation;\n  var mixin = scope.mixin;\n  var registerWrapper = scope.registerWrapper;\n\n  function toUInt32(x) {\n    return x >>> 0;\n  }\n\n  var OriginalText = window.Text;\n\n  function Text(node) {\n    CharacterData.call(this, node);\n  }\n  Text.prototype = Object.create(CharacterData.prototype);\n  mixin(Text.prototype, {\n    splitText: function(offset) {\n      offset = toUInt32(offset);\n      var s = this.data;\n      if (offset > s.length)\n        throw new Error('IndexSizeError');\n      var head = s.slice(0, offset);\n      var tail = s.slice(offset);\n      this.data = head;\n      var newTextNode = this.ownerDocument.createTextNode(tail);\n      if (this.parentNode)\n        this.parentNode.insertBefore(newTextNode, this.nextSibling);\n      return newTextNode;\n    }\n  });\n\n  registerWrapper(OriginalText, Text, document.createTextNode(''));\n\n  scope.wrappers.Text = Text;\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var ChildNodeInterface = scope.ChildNodeInterface;\n  var GetElementsByInterface = scope.GetElementsByInterface;\n  var Node = scope.wrappers.Node;\n  var ParentNodeInterface = scope.ParentNodeInterface;\n  var SelectorsInterface = scope.SelectorsInterface;\n  var addWrapNodeListMethod = scope.addWrapNodeListMethod;\n  var enqueueMutation = scope.enqueueMutation;\n  var mixin = scope.mixin;\n  var oneOf = scope.oneOf;\n  var registerWrapper = scope.registerWrapper;\n  var wrappers = scope.wrappers;\n\n  var OriginalElement = window.Element;\n\n  var matchesNames = [\n    'matches',  // needs to come first.\n    'mozMatchesSelector',\n    'msMatchesSelector',\n    'webkitMatchesSelector',\n  ].filter(function(name) {\n    return OriginalElement.prototype[name];\n  });\n\n  var matchesName = matchesNames[0];\n\n  var originalMatches = OriginalElement.prototype[matchesName];\n\n  function invalidateRendererBasedOnAttribute(element, name) {\n    // Only invalidate if parent node is a shadow host.\n    var p = element.parentNode;\n    if (!p || !p.shadowRoot)\n      return;\n\n    var renderer = scope.getRendererForHost(p);\n    if (renderer.dependsOnAttribute(name))\n      renderer.invalidate();\n  }\n\n  function enqueAttributeChange(element, name, oldValue) {\n    // This is not fully spec compliant. We should use localName (which might\n    // have a different case than name) and the namespace (which requires us\n    // to get the Attr object).\n    enqueueMutation(element, 'attributes', {\n      name: name,\n      namespace: null,\n      oldValue: oldValue\n    });\n  }\n\n  function Element(node) {\n    Node.call(this, node);\n  }\n  Element.prototype = Object.create(Node.prototype);\n  mixin(Element.prototype, {\n    createShadowRoot: function() {\n      var newShadowRoot = new wrappers.ShadowRoot(this);\n      this.impl.polymerShadowRoot_ = newShadowRoot;\n\n      var renderer = scope.getRendererForHost(this);\n      renderer.invalidate();\n\n      return newShadowRoot;\n    },\n\n    get shadowRoot() {\n      return this.impl.polymerShadowRoot_ || null;\n    },\n\n    setAttribute: function(name, value) {\n      var oldValue = this.impl.getAttribute(name);\n      this.impl.setAttribute(name, value);\n      enqueAttributeChange(this, name, oldValue);\n      invalidateRendererBasedOnAttribute(this, name);\n    },\n\n    removeAttribute: function(name) {\n      var oldValue = this.impl.getAttribute(name);\n      this.impl.removeAttribute(name);\n      enqueAttributeChange(this, name, oldValue);\n      invalidateRendererBasedOnAttribute(this, name);\n    },\n\n    matches: function(selector) {\n      return originalMatches.call(this.impl, selector);\n    }\n  });\n\n  matchesNames.forEach(function(name) {\n    if (name !== 'matches') {\n      Element.prototype[name] = function(selector) {\n        return this.matches(selector);\n      };\n    }\n  });\n\n  if (OriginalElement.prototype.webkitCreateShadowRoot) {\n    Element.prototype.webkitCreateShadowRoot =\n        Element.prototype.createShadowRoot;\n  }\n\n  /**\n   * Useful for generating the accessor pair for a property that reflects an\n   * attribute.\n   */\n  function setterDirtiesAttribute(prototype, propertyName, opt_attrName) {\n    var attrName = opt_attrName || propertyName;\n    Object.defineProperty(prototype, propertyName, {\n      get: function() {\n        return this.impl[propertyName];\n      },\n      set: function(v) {\n        this.impl[propertyName] = v;\n        invalidateRendererBasedOnAttribute(this, attrName);\n      },\n      configurable: true,\n      enumerable: true\n    });\n  }\n\n  setterDirtiesAttribute(Element.prototype, 'id');\n  setterDirtiesAttribute(Element.prototype, 'className', 'class');\n\n  mixin(Element.prototype, ChildNodeInterface);\n  mixin(Element.prototype, GetElementsByInterface);\n  mixin(Element.prototype, ParentNodeInterface);\n  mixin(Element.prototype, SelectorsInterface);\n\n  registerWrapper(OriginalElement, Element,\n                  document.createElementNS(null, 'x'));\n\n  // TODO(arv): Export setterDirtiesAttribute and apply it to more bindings\n  // that reflect attributes.\n  scope.matchesNames = matchesNames;\n  scope.wrappers.Element = Element;\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var Element = scope.wrappers.Element;\n  var defineGetter = scope.defineGetter;\n  var enqueueMutation = scope.enqueueMutation;\n  var mixin = scope.mixin;\n  var nodesWereAdded = scope.nodesWereAdded;\n  var nodesWereRemoved = scope.nodesWereRemoved;\n  var registerWrapper = scope.registerWrapper;\n  var snapshotNodeList = scope.snapshotNodeList;\n  var unwrap = scope.unwrap;\n  var wrap = scope.wrap;\n  var wrappers = scope.wrappers;\n\n  /////////////////////////////////////////////////////////////////////////////\n  // innerHTML and outerHTML\n\n  // http://www.whatwg.org/specs/web-apps/current-work/multipage/the-end.html#escapingString\n  var escapeAttrRegExp = /[&\\u00A0\"]/g;\n  var escapeDataRegExp = /[&\\u00A0<>]/g;\n\n  function escapeReplace(c) {\n    switch (c) {\n      case '&':\n        return '&amp;';\n      case '<':\n        return '&lt;';\n      case '>':\n        return '&gt;';\n      case '\"':\n        return '&quot;'\n      case '\\u00A0':\n        return '&nbsp;';\n    }\n  }\n\n  function escapeAttr(s) {\n    return s.replace(escapeAttrRegExp, escapeReplace);\n  }\n\n  function escapeData(s) {\n    return s.replace(escapeDataRegExp, escapeReplace);\n  }\n\n  function makeSet(arr) {\n    var set = {};\n    for (var i = 0; i < arr.length; i++) {\n      set[arr[i]] = true;\n    }\n    return set;\n  }\n\n  // http://www.whatwg.org/specs/web-apps/current-work/#void-elements\n  var voidElements = makeSet([\n    'area',\n    'base',\n    'br',\n    'col',\n    'command',\n    'embed',\n    'hr',\n    'img',\n    'input',\n    'keygen',\n    'link',\n    'meta',\n    'param',\n    'source',\n    'track',\n    'wbr'\n  ]);\n\n  var plaintextParents = makeSet([\n    'style',\n    'script',\n    'xmp',\n    'iframe',\n    'noembed',\n    'noframes',\n    'plaintext',\n    'noscript'\n  ]);\n\n  function getOuterHTML(node, parentNode) {\n    switch (node.nodeType) {\n      case Node.ELEMENT_NODE:\n        var tagName = node.tagName.toLowerCase();\n        var s = '<' + tagName;\n        var attrs = node.attributes;\n        for (var i = 0, attr; attr = attrs[i]; i++) {\n          s += ' ' + attr.name + '=\"' + escapeAttr(attr.value) + '\"';\n        }\n        s += '>';\n        if (voidElements[tagName])\n          return s;\n\n        return s + getInnerHTML(node) + '</' + tagName + '>';\n\n      case Node.TEXT_NODE:\n        var data = node.data;\n        if (parentNode && plaintextParents[parentNode.localName])\n          return data;\n        return escapeData(data);\n\n      case Node.COMMENT_NODE:\n        return '<!--' + node.data + '-->';\n\n      default:\n        console.error(node);\n        throw new Error('not implemented');\n    }\n  }\n\n  function getInnerHTML(node) {\n    if (node instanceof wrappers.HTMLTemplateElement)\n      node = node.content;\n\n    var s = '';\n    for (var child = node.firstChild; child; child = child.nextSibling) {\n      s += getOuterHTML(child, node);\n    }\n    return s;\n  }\n\n  function setInnerHTML(node, value, opt_tagName) {\n    var tagName = opt_tagName || 'div';\n    node.textContent = '';\n    var tempElement = unwrap(node.ownerDocument.createElement(tagName));\n    tempElement.innerHTML = value;\n    var firstChild;\n    while (firstChild = tempElement.firstChild) {\n      node.appendChild(wrap(firstChild));\n    }\n  }\n\n  // IE11 does not have MSIE in the user agent string.\n  var oldIe = /MSIE/.test(navigator.userAgent);\n\n  var OriginalHTMLElement = window.HTMLElement;\n  var OriginalHTMLTemplateElement = window.HTMLTemplateElement;\n\n  function HTMLElement(node) {\n    Element.call(this, node);\n  }\n  HTMLElement.prototype = Object.create(Element.prototype);\n  mixin(HTMLElement.prototype, {\n    get innerHTML() {\n      return getInnerHTML(this);\n    },\n    set innerHTML(value) {\n      // IE9 does not handle set innerHTML correctly on plaintextParents. It\n      // creates element children. For example\n      //\n      //   scriptElement.innerHTML = '<a>test</a>'\n      //\n      // Creates a single HTMLAnchorElement child.\n      if (oldIe && plaintextParents[this.localName]) {\n        this.textContent = value;\n        return;\n      }\n\n      var removedNodes = snapshotNodeList(this.childNodes);\n\n      if (this.invalidateShadowRenderer()) {\n        if (this instanceof wrappers.HTMLTemplateElement)\n          setInnerHTML(this.content, value);\n        else\n          setInnerHTML(this, value, this.tagName);\n\n      // If we have a non native template element we need to handle this\n      // manually since setting impl.innerHTML would add the html as direct\n      // children and not be moved over to the content fragment.\n      } else if (!OriginalHTMLTemplateElement &&\n                 this instanceof wrappers.HTMLTemplateElement) {\n        setInnerHTML(this.content, value);\n      } else {\n        this.impl.innerHTML = value;\n      }\n\n      var addedNodes = snapshotNodeList(this.childNodes);\n\n      enqueueMutation(this, 'childList', {\n        addedNodes: addedNodes,\n        removedNodes: removedNodes\n      });\n\n      nodesWereRemoved(removedNodes);\n      nodesWereAdded(addedNodes, this);\n    },\n\n    get outerHTML() {\n      return getOuterHTML(this, this.parentNode);\n    },\n    set outerHTML(value) {\n      var p = this.parentNode;\n      if (p) {\n        p.invalidateShadowRenderer();\n        var df = frag(p, value);\n        p.replaceChild(df, this);\n      }\n    },\n\n    insertAdjacentHTML: function(position, text) {\n      var contextElement, refNode;\n      switch (String(position).toLowerCase()) {\n        case 'beforebegin':\n          contextElement = this.parentNode;\n          refNode = this;\n          break;\n        case 'afterend':\n          contextElement = this.parentNode;\n          refNode = this.nextSibling;\n          break;\n        case 'afterbegin':\n          contextElement = this;\n          refNode = this.firstChild;\n          break;\n        case 'beforeend':\n          contextElement = this;\n          refNode = null;\n          break;\n        default:\n          return;\n      }\n\n      var df = frag(contextElement, text);\n      contextElement.insertBefore(df, refNode);\n    }\n  });\n\n  function frag(contextElement, html) {\n    // TODO(arv): This does not work with SVG and other non HTML elements.\n    var p = unwrap(contextElement.cloneNode(false));\n    p.innerHTML = html;\n    var df = unwrap(document.createDocumentFragment());\n    var c;\n    while (c = p.firstChild) {\n      df.appendChild(c);\n    }\n    return wrap(df);\n  }\n\n  function getter(name) {\n    return function() {\n      scope.renderAllPending();\n      return this.impl[name];\n    };\n  }\n\n  function getterRequiresRendering(name) {\n    defineGetter(HTMLElement, name, getter(name));\n  }\n\n  [\n    'clientHeight',\n    'clientLeft',\n    'clientTop',\n    'clientWidth',\n    'offsetHeight',\n    'offsetLeft',\n    'offsetTop',\n    'offsetWidth',\n    'scrollHeight',\n    'scrollWidth',\n  ].forEach(getterRequiresRendering);\n\n  function getterAndSetterRequiresRendering(name) {\n    Object.defineProperty(HTMLElement.prototype, name, {\n      get: getter(name),\n      set: function(v) {\n        scope.renderAllPending();\n        this.impl[name] = v;\n      },\n      configurable: true,\n      enumerable: true\n    });\n  }\n\n  [\n    'scrollLeft',\n    'scrollTop',\n  ].forEach(getterAndSetterRequiresRendering);\n\n  function methodRequiresRendering(name) {\n    Object.defineProperty(HTMLElement.prototype, name, {\n      value: function() {\n        scope.renderAllPending();\n        return this.impl[name].apply(this.impl, arguments);\n      },\n      configurable: true,\n      enumerable: true\n    });\n  }\n\n  [\n    'getBoundingClientRect',\n    'getClientRects',\n    'scrollIntoView'\n  ].forEach(methodRequiresRendering);\n\n  // HTMLElement is abstract so we use a subclass that has no members.\n  registerWrapper(OriginalHTMLElement, HTMLElement,\n                  document.createElement('b'));\n\n  scope.wrappers.HTMLElement = HTMLElement;\n\n  // TODO: Find a better way to share these two with WrapperShadowRoot.\n  scope.getInnerHTML = getInnerHTML;\n  scope.setInnerHTML = setInnerHTML\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var HTMLElement = scope.wrappers.HTMLElement;\n  var mixin = scope.mixin;\n  var registerWrapper = scope.registerWrapper;\n  var wrap = scope.wrap;\n\n  var OriginalHTMLCanvasElement = window.HTMLCanvasElement;\n\n  function HTMLCanvasElement(node) {\n    HTMLElement.call(this, node);\n  }\n  HTMLCanvasElement.prototype = Object.create(HTMLElement.prototype);\n\n  mixin(HTMLCanvasElement.prototype, {\n    getContext: function() {\n      var context = this.impl.getContext.apply(this.impl, arguments);\n      return context && wrap(context);\n    }\n  });\n\n  registerWrapper(OriginalHTMLCanvasElement, HTMLCanvasElement,\n                  document.createElement('canvas'));\n\n  scope.wrappers.HTMLCanvasElement = HTMLCanvasElement;\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var HTMLElement = scope.wrappers.HTMLElement;\n  var mixin = scope.mixin;\n  var registerWrapper = scope.registerWrapper;\n\n  var OriginalHTMLContentElement = window.HTMLContentElement;\n\n  function HTMLContentElement(node) {\n    HTMLElement.call(this, node);\n  }\n  HTMLContentElement.prototype = Object.create(HTMLElement.prototype);\n  mixin(HTMLContentElement.prototype, {\n    get select() {\n      return this.getAttribute('select');\n    },\n    set select(value) {\n      this.setAttribute('select', value);\n    },\n\n    setAttribute: function(n, v) {\n      HTMLElement.prototype.setAttribute.call(this, n, v);\n      if (String(n).toLowerCase() === 'select')\n        this.invalidateShadowRenderer(true);\n    }\n\n    // getDistributedNodes is added in ShadowRenderer\n\n    // TODO: attribute boolean resetStyleInheritance;\n  });\n\n  if (OriginalHTMLContentElement)\n    registerWrapper(OriginalHTMLContentElement, HTMLContentElement);\n\n  scope.wrappers.HTMLContentElement = HTMLContentElement;\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var HTMLElement = scope.wrappers.HTMLElement;\n  var registerWrapper = scope.registerWrapper;\n  var unwrap = scope.unwrap;\n  var rewrap = scope.rewrap;\n\n  var OriginalHTMLImageElement = window.HTMLImageElement;\n\n  function HTMLImageElement(node) {\n    HTMLElement.call(this, node);\n  }\n  HTMLImageElement.prototype = Object.create(HTMLElement.prototype);\n\n  registerWrapper(OriginalHTMLImageElement, HTMLImageElement,\n                  document.createElement('img'));\n\n  function Image(width, height) {\n    if (!(this instanceof Image)) {\n      throw new TypeError(\n          'DOM object constructor cannot be called as a function.');\n    }\n\n    var node = unwrap(document.createElement('img'));\n    HTMLElement.call(this, node);\n    rewrap(node, this);\n\n    if (width !== undefined)\n      node.width = width;\n    if (height !== undefined)\n      node.height = height;\n  }\n\n  Image.prototype = HTMLImageElement.prototype;\n\n  scope.wrappers.HTMLImageElement = HTMLImageElement;\n  scope.wrappers.Image = Image;\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var HTMLElement = scope.wrappers.HTMLElement;\n  var mixin = scope.mixin;\n  var registerWrapper = scope.registerWrapper;\n\n  var OriginalHTMLShadowElement = window.HTMLShadowElement;\n\n  function HTMLShadowElement(node) {\n    HTMLElement.call(this, node);\n  }\n  HTMLShadowElement.prototype = Object.create(HTMLElement.prototype);\n  mixin(HTMLShadowElement.prototype, {\n    // TODO: attribute boolean resetStyleInheritance;\n  });\n\n  if (OriginalHTMLShadowElement)\n    registerWrapper(OriginalHTMLShadowElement, HTMLShadowElement);\n\n  scope.wrappers.HTMLShadowElement = HTMLShadowElement;\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var HTMLElement = scope.wrappers.HTMLElement;\n  var mixin = scope.mixin;\n  var registerWrapper = scope.registerWrapper;\n  var unwrap = scope.unwrap;\n  var wrap = scope.wrap;\n\n  var contentTable = new WeakMap();\n  var templateContentsOwnerTable = new WeakMap();\n\n  // http://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/templates/index.html#dfn-template-contents-owner\n  function getTemplateContentsOwner(doc) {\n    if (!doc.defaultView)\n      return doc;\n    var d = templateContentsOwnerTable.get(doc);\n    if (!d) {\n      // TODO(arv): This should either be a Document or HTMLDocument depending\n      // on doc.\n      d = doc.implementation.createHTMLDocument('');\n      while (d.lastChild) {\n        d.removeChild(d.lastChild);\n      }\n      templateContentsOwnerTable.set(doc, d);\n    }\n    return d;\n  }\n\n  function extractContent(templateElement) {\n    // templateElement is not a wrapper here.\n    var doc = getTemplateContentsOwner(templateElement.ownerDocument);\n    var df = unwrap(doc.createDocumentFragment());\n    var child;\n    while (child = templateElement.firstChild) {\n      df.appendChild(child);\n    }\n    return df;\n  }\n\n  var OriginalHTMLTemplateElement = window.HTMLTemplateElement;\n\n  function HTMLTemplateElement(node) {\n    HTMLElement.call(this, node);\n    if (!OriginalHTMLTemplateElement) {\n      var content = extractContent(node);\n      contentTable.set(this, wrap(content));\n    }\n  }\n  HTMLTemplateElement.prototype = Object.create(HTMLElement.prototype);\n\n  mixin(HTMLTemplateElement.prototype, {\n    get content() {\n      if (OriginalHTMLTemplateElement)\n        return wrap(this.impl.content);\n      return contentTable.get(this);\n    },\n\n    // TODO(arv): cloneNode needs to clone content.\n\n  });\n\n  if (OriginalHTMLTemplateElement)\n    registerWrapper(OriginalHTMLTemplateElement, HTMLTemplateElement);\n\n  scope.wrappers.HTMLTemplateElement = HTMLTemplateElement;\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var HTMLElement = scope.wrappers.HTMLElement;\n  var registerWrapper = scope.registerWrapper;\n\n  var OriginalHTMLMediaElement = window.HTMLMediaElement;\n\n  function HTMLMediaElement(node) {\n    HTMLElement.call(this, node);\n  }\n  HTMLMediaElement.prototype = Object.create(HTMLElement.prototype);\n\n  registerWrapper(OriginalHTMLMediaElement, HTMLMediaElement,\n                  document.createElement('audio'));\n\n  scope.wrappers.HTMLMediaElement = HTMLMediaElement;\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var HTMLMediaElement = scope.wrappers.HTMLMediaElement;\n  var registerWrapper = scope.registerWrapper;\n  var unwrap = scope.unwrap;\n  var rewrap = scope.rewrap;\n\n  var OriginalHTMLAudioElement = window.HTMLAudioElement;\n\n  function HTMLAudioElement(node) {\n    HTMLMediaElement.call(this, node);\n  }\n  HTMLAudioElement.prototype = Object.create(HTMLMediaElement.prototype);\n\n  registerWrapper(OriginalHTMLAudioElement, HTMLAudioElement,\n                  document.createElement('audio'));\n\n  function Audio(src) {\n    if (!(this instanceof Audio)) {\n      throw new TypeError(\n          'DOM object constructor cannot be called as a function.');\n    }\n\n    var node = unwrap(document.createElement('audio'));\n    HTMLMediaElement.call(this, node);\n    rewrap(node, this);\n\n    node.setAttribute('preload', 'auto');\n    if (src !== undefined)\n      node.setAttribute('src', src);\n  }\n\n  Audio.prototype = HTMLAudioElement.prototype;\n\n  scope.wrappers.HTMLAudioElement = HTMLAudioElement;\n  scope.wrappers.Audio = Audio;\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var HTMLElement = scope.wrappers.HTMLElement;\n  var mixin = scope.mixin;\n  var registerWrapper = scope.registerWrapper;\n  var rewrap = scope.rewrap;\n  var unwrap = scope.unwrap;\n  var wrap = scope.wrap;\n\n  var OriginalHTMLOptionElement = window.HTMLOptionElement;\n\n  function trimText(s) {\n    return s.replace(/\\s+/g, ' ').trim();\n  }\n\n  function HTMLOptionElement(node) {\n    HTMLElement.call(this, node);\n  }\n  HTMLOptionElement.prototype = Object.create(HTMLElement.prototype);\n  mixin(HTMLOptionElement.prototype, {\n    get text() {\n      return trimText(this.textContent);\n    },\n    set text(value) {\n      this.textContent = trimText(String(value));\n    },\n    get form() {\n      return wrap(unwrap(this).form);\n    }\n  });\n\n  registerWrapper(OriginalHTMLOptionElement, HTMLOptionElement,\n                  document.createElement('option'));\n\n  function Option(text, value, defaultSelected, selected) {\n    if (!(this instanceof Option)) {\n      throw new TypeError(\n          'DOM object constructor cannot be called as a function.');\n    }\n\n    var node = unwrap(document.createElement('option'));\n    HTMLElement.call(this, node);\n    rewrap(node, this);\n\n    if (text !== undefined)\n      node.text = text;\n    if (value !== undefined)\n      node.setAttribute('value', value);\n    if (defaultSelected === true)\n      node.setAttribute('selected', '');\n    node.selected = selected === true;\n  }\n\n  Option.prototype = HTMLOptionElement.prototype;\n\n  scope.wrappers.HTMLOptionElement = HTMLOptionElement;\n  scope.wrappers.Option = Option;\n})(window.ShadowDOMPolyfill);\n","// Copyright 2014 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var HTMLElement = scope.wrappers.HTMLElement;\n  var mixin = scope.mixin;\n  var registerWrapper = scope.registerWrapper;\n  var unwrap = scope.unwrap;\n  var wrap = scope.wrap;\n\n  var OriginalHTMLSelectElement = window.HTMLSelectElement;\n\n  function HTMLSelectElement(node) {\n    HTMLElement.call(this, node);\n  }\n  HTMLSelectElement.prototype = Object.create(HTMLElement.prototype);\n  mixin(HTMLSelectElement.prototype, {\n    add: function(element, before) {\n      if (typeof before === 'object')  // also includes null\n        before = unwrap(before);\n      unwrap(this).add(unwrap(element), before);\n    },\n\n    remove: function(indexOrNode) {\n      // Spec only allows index but implementations allow index or node.\n      // remove() is also allowed which is same as remove(undefined)\n      if (indexOrNode === undefined) {\n        HTMLElement.prototype.remove.call(this);\n        return;\n      }\n\n      if (typeof indexOrNode === 'object')\n        indexOrNode = unwrap(indexOrNode);\n\n      unwrap(this).remove(indexOrNode);\n    },\n\n    get form() {\n      return wrap(unwrap(this).form);\n    }\n  });\n\n  registerWrapper(OriginalHTMLSelectElement, HTMLSelectElement,\n                  document.createElement('select'));\n\n  scope.wrappers.HTMLSelectElement = HTMLSelectElement;\n})(window.ShadowDOMPolyfill);\n","/*\n * Copyright 2014 The Polymer Authors. All rights reserved.\n * Use of this source code is goverened by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(scope) {\n  'use strict';\n\n  var HTMLElement = scope.wrappers.HTMLElement;\n  var mixin = scope.mixin;\n  var registerWrapper = scope.registerWrapper;\n  var unwrap = scope.unwrap;\n  var wrap = scope.wrap;\n  var wrapHTMLCollection = scope.wrapHTMLCollection;\n\n  var OriginalHTMLTableElement = window.HTMLTableElement;\n\n  function HTMLTableElement(node) {\n    HTMLElement.call(this, node);\n  }\n  HTMLTableElement.prototype = Object.create(HTMLElement.prototype);\n  mixin(HTMLTableElement.prototype, {\n    get caption() {\n      return wrap(unwrap(this).caption);\n    },\n    createCaption: function() {\n      return wrap(unwrap(this).createCaption());\n    },\n\n    get tHead() {\n      return wrap(unwrap(this).tHead);\n    },\n    createTHead: function() {\n      return wrap(unwrap(this).createTHead());\n    },\n\n    createTFoot: function() {\n      return wrap(unwrap(this).createTFoot());\n    },\n    get tFoot() {\n      return wrap(unwrap(this).tFoot);\n    },\n\n    get tBodies() {\n      return wrapHTMLCollection(unwrap(this).tBodies);\n    },\n    createTBody: function() {\n      return wrap(unwrap(this).createTBody());\n    },\n\n    get rows() {\n      return wrapHTMLCollection(unwrap(this).rows);\n    },\n    insertRow: function(index) {\n      return wrap(unwrap(this).insertRow(index));\n    }\n  });\n\n  registerWrapper(OriginalHTMLTableElement, HTMLTableElement,\n                  document.createElement('table'));\n\n  scope.wrappers.HTMLTableElement = HTMLTableElement;\n})(window.ShadowDOMPolyfill);\n","/*\n * Copyright 2014 The Polymer Authors. All rights reserved.\n * Use of this source code is goverened by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(scope) {\n  'use strict';\n\n  var HTMLElement = scope.wrappers.HTMLElement;\n  var mixin = scope.mixin;\n  var registerWrapper = scope.registerWrapper;\n  var wrapHTMLCollection = scope.wrapHTMLCollection;\n  var unwrap = scope.unwrap;\n  var wrap = scope.wrap;\n\n  var OriginalHTMLTableSectionElement = window.HTMLTableSectionElement;\n\n  function HTMLTableSectionElement(node) {\n    HTMLElement.call(this, node);\n  }\n  HTMLTableSectionElement.prototype = Object.create(HTMLElement.prototype);\n  mixin(HTMLTableSectionElement.prototype, {\n    get rows() {\n      return wrapHTMLCollection(unwrap(this).rows);\n    },\n    insertRow: function(index) {\n      return wrap(unwrap(this).insertRow(index));\n    }\n  });\n\n  registerWrapper(OriginalHTMLTableSectionElement, HTMLTableSectionElement,\n                  document.createElement('thead'));\n\n  scope.wrappers.HTMLTableSectionElement = HTMLTableSectionElement;\n})(window.ShadowDOMPolyfill);\n","/*\n * Copyright 2014 The Polymer Authors. All rights reserved.\n * Use of this source code is goverened by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(scope) {\n  'use strict';\n\n  var HTMLElement = scope.wrappers.HTMLElement;\n  var mixin = scope.mixin;\n  var registerWrapper = scope.registerWrapper;\n  var wrapHTMLCollection = scope.wrapHTMLCollection;\n  var unwrap = scope.unwrap;\n  var wrap = scope.wrap;\n\n  var OriginalHTMLTableRowElement = window.HTMLTableRowElement;\n\n  function HTMLTableRowElement(node) {\n    HTMLElement.call(this, node);\n  }\n  HTMLTableRowElement.prototype = Object.create(HTMLElement.prototype);\n  mixin(HTMLTableRowElement.prototype, {\n    get cells() {\n      return wrapHTMLCollection(unwrap(this).cells);\n    },\n\n    insertCell: function(index) {\n      return wrap(unwrap(this).insertCell(index));\n    }\n  });\n\n  registerWrapper(OriginalHTMLTableRowElement, HTMLTableRowElement,\n                  document.createElement('tr'));\n\n  scope.wrappers.HTMLTableRowElement = HTMLTableRowElement;\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var HTMLContentElement = scope.wrappers.HTMLContentElement;\n  var HTMLElement = scope.wrappers.HTMLElement;\n  var HTMLShadowElement = scope.wrappers.HTMLShadowElement;\n  var HTMLTemplateElement = scope.wrappers.HTMLTemplateElement;\n  var mixin = scope.mixin;\n  var registerWrapper = scope.registerWrapper;\n\n  var OriginalHTMLUnknownElement = window.HTMLUnknownElement;\n\n  function HTMLUnknownElement(node) {\n    switch (node.localName) {\n      case 'content':\n        return new HTMLContentElement(node);\n      case 'shadow':\n        return new HTMLShadowElement(node);\n      case 'template':\n        return new HTMLTemplateElement(node);\n    }\n    HTMLElement.call(this, node);\n  }\n  HTMLUnknownElement.prototype = Object.create(HTMLElement.prototype);\n  registerWrapper(OriginalHTMLUnknownElement, HTMLUnknownElement);\n  scope.wrappers.HTMLUnknownElement = HTMLUnknownElement;\n})(window.ShadowDOMPolyfill);\n","// Copyright 2014 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var registerObject = scope.registerObject;\n\n  var SVG_NS = 'http://www.w3.org/2000/svg';\n  var svgTitleElement = document.createElementNS(SVG_NS, 'title');\n  var SVGTitleElement = registerObject(svgTitleElement);\n  var SVGElement = Object.getPrototypeOf(SVGTitleElement.prototype).constructor;\n\n  scope.wrappers.SVGElement = SVGElement;\n})(window.ShadowDOMPolyfill);\n","// Copyright 2014 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var mixin = scope.mixin;\n  var registerWrapper = scope.registerWrapper;\n  var unwrap = scope.unwrap;\n  var wrap = scope.wrap;\n\n  var OriginalSVGUseElement = window.SVGUseElement;\n\n  // IE uses SVGElement as parent interface, SVG2 (Blink & Gecko) uses\n  // SVGGraphicsElement. Use the <g> element to get the right prototype.\n\n  var SVG_NS = 'http://www.w3.org/2000/svg';\n  var gWrapper = wrap(document.createElementNS(SVG_NS, 'g'));\n  var useElement = document.createElementNS(SVG_NS, 'use');\n  var SVGGElement = gWrapper.constructor;\n  var parentInterfacePrototype = Object.getPrototypeOf(SVGGElement.prototype);\n  var parentInterface = parentInterfacePrototype.constructor;\n\n  function SVGUseElement(impl) {\n    parentInterface.call(this, impl);\n  }\n\n  SVGUseElement.prototype = Object.create(parentInterfacePrototype);\n\n  // Firefox does not expose instanceRoot.\n  if ('instanceRoot' in useElement) {\n    mixin(SVGUseElement.prototype, {\n      get instanceRoot() {\n        return wrap(unwrap(this).instanceRoot);\n      },\n      get animatedInstanceRoot() {\n        return wrap(unwrap(this).animatedInstanceRoot);\n      },\n    });\n  }\n\n  registerWrapper(OriginalSVGUseElement, SVGUseElement, useElement);\n\n  scope.wrappers.SVGUseElement = SVGUseElement;\n})(window.ShadowDOMPolyfill);\n","// Copyright 2014 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var EventTarget = scope.wrappers.EventTarget;\n  var mixin = scope.mixin;\n  var registerWrapper = scope.registerWrapper;\n  var wrap = scope.wrap;\n\n  var OriginalSVGElementInstance = window.SVGElementInstance;\n  if (!OriginalSVGElementInstance)\n    return;\n\n  function SVGElementInstance(impl) {\n    EventTarget.call(this, impl);\n  }\n\n  SVGElementInstance.prototype = Object.create(EventTarget.prototype);\n  mixin(SVGElementInstance.prototype, {\n    /** @type {SVGElement} */\n    get correspondingElement() {\n      return wrap(this.impl.correspondingElement);\n    },\n\n    /** @type {SVGUseElement} */\n    get correspondingUseElement() {\n      return wrap(this.impl.correspondingUseElement);\n    },\n\n    /** @type {SVGElementInstance} */\n    get parentNode() {\n      return wrap(this.impl.parentNode);\n    },\n\n    /** @type {SVGElementInstanceList} */\n    get childNodes() {\n      throw new Error('Not implemented');\n    },\n\n    /** @type {SVGElementInstance} */\n    get firstChild() {\n      return wrap(this.impl.firstChild);\n    },\n\n    /** @type {SVGElementInstance} */\n    get lastChild() {\n      return wrap(this.impl.lastChild);\n    },\n\n    /** @type {SVGElementInstance} */\n    get previousSibling() {\n      return wrap(this.impl.previousSibling);\n    },\n\n    /** @type {SVGElementInstance} */\n    get nextSibling() {\n      return wrap(this.impl.nextSibling);\n    }\n  });\n\n  registerWrapper(OriginalSVGElementInstance, SVGElementInstance);\n\n  scope.wrappers.SVGElementInstance = SVGElementInstance;\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var mixin = scope.mixin;\n  var registerWrapper = scope.registerWrapper;\n  var unwrap = scope.unwrap;\n  var unwrapIfNeeded = scope.unwrapIfNeeded;\n  var wrap = scope.wrap;\n\n  var OriginalCanvasRenderingContext2D = window.CanvasRenderingContext2D;\n\n  function CanvasRenderingContext2D(impl) {\n    this.impl = impl;\n  }\n\n  mixin(CanvasRenderingContext2D.prototype, {\n    get canvas() {\n      return wrap(this.impl.canvas);\n    },\n\n    drawImage: function() {\n      arguments[0] = unwrapIfNeeded(arguments[0]);\n      this.impl.drawImage.apply(this.impl, arguments);\n    },\n\n    createPattern: function() {\n      arguments[0] = unwrap(arguments[0]);\n      return this.impl.createPattern.apply(this.impl, arguments);\n    }\n  });\n\n  registerWrapper(OriginalCanvasRenderingContext2D, CanvasRenderingContext2D,\n                  document.createElement('canvas').getContext('2d'));\n\n  scope.wrappers.CanvasRenderingContext2D = CanvasRenderingContext2D;\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var mixin = scope.mixin;\n  var registerWrapper = scope.registerWrapper;\n  var unwrapIfNeeded = scope.unwrapIfNeeded;\n  var wrap = scope.wrap;\n\n  var OriginalWebGLRenderingContext = window.WebGLRenderingContext;\n\n  // IE10 does not have WebGL.\n  if (!OriginalWebGLRenderingContext)\n    return;\n\n  function WebGLRenderingContext(impl) {\n    this.impl = impl;\n  }\n\n  mixin(WebGLRenderingContext.prototype, {\n    get canvas() {\n      return wrap(this.impl.canvas);\n    },\n\n    texImage2D: function() {\n      arguments[5] = unwrapIfNeeded(arguments[5]);\n      this.impl.texImage2D.apply(this.impl, arguments);\n    },\n\n    texSubImage2D: function() {\n      arguments[6] = unwrapIfNeeded(arguments[6]);\n      this.impl.texSubImage2D.apply(this.impl, arguments);\n    }\n  });\n\n  // Blink/WebKit has broken DOM bindings. Usually we would create an instance\n  // of the object and pass it into registerWrapper as a \"blueprint\" but\n  // creating WebGL contexts is expensive and might fail so we use a dummy\n  // object with dummy instance properties for these broken browsers.\n  var instanceProperties = /WebKit/.test(navigator.userAgent) ?\n      {drawingBufferHeight: null, drawingBufferWidth: null} : {};\n\n  registerWrapper(OriginalWebGLRenderingContext, WebGLRenderingContext,\n      instanceProperties);\n\n  scope.wrappers.WebGLRenderingContext = WebGLRenderingContext;\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var registerWrapper = scope.registerWrapper;\n  var unwrap = scope.unwrap;\n  var unwrapIfNeeded = scope.unwrapIfNeeded;\n  var wrap = scope.wrap;\n\n  var OriginalRange = window.Range;\n\n  function Range(impl) {\n    this.impl = impl;\n  }\n  Range.prototype = {\n    get startContainer() {\n      return wrap(this.impl.startContainer);\n    },\n    get endContainer() {\n      return wrap(this.impl.endContainer);\n    },\n    get commonAncestorContainer() {\n      return wrap(this.impl.commonAncestorContainer);\n    },\n    setStart: function(refNode,offset) {\n      this.impl.setStart(unwrapIfNeeded(refNode), offset);\n    },\n    setEnd: function(refNode,offset) {\n      this.impl.setEnd(unwrapIfNeeded(refNode), offset);\n    },\n    setStartBefore: function(refNode) {\n      this.impl.setStartBefore(unwrapIfNeeded(refNode));\n    },\n    setStartAfter: function(refNode) {\n      this.impl.setStartAfter(unwrapIfNeeded(refNode));\n    },\n    setEndBefore: function(refNode) {\n      this.impl.setEndBefore(unwrapIfNeeded(refNode));\n    },\n    setEndAfter: function(refNode) {\n      this.impl.setEndAfter(unwrapIfNeeded(refNode));\n    },\n    selectNode: function(refNode) {\n      this.impl.selectNode(unwrapIfNeeded(refNode));\n    },\n    selectNodeContents: function(refNode) {\n      this.impl.selectNodeContents(unwrapIfNeeded(refNode));\n    },\n    compareBoundaryPoints: function(how, sourceRange) {\n      return this.impl.compareBoundaryPoints(how, unwrap(sourceRange));\n    },\n    extractContents: function() {\n      return wrap(this.impl.extractContents());\n    },\n    cloneContents: function() {\n      return wrap(this.impl.cloneContents());\n    },\n    insertNode: function(node) {\n      this.impl.insertNode(unwrapIfNeeded(node));\n    },\n    surroundContents: function(newParent) {\n      this.impl.surroundContents(unwrapIfNeeded(newParent));\n    },\n    cloneRange: function() {\n      return wrap(this.impl.cloneRange());\n    },\n    isPointInRange: function(node, offset) {\n      return this.impl.isPointInRange(unwrapIfNeeded(node), offset);\n    },\n    comparePoint: function(node, offset) {\n      return this.impl.comparePoint(unwrapIfNeeded(node), offset);\n    },\n    intersectsNode: function(node) {\n      return this.impl.intersectsNode(unwrapIfNeeded(node));\n    },\n    toString: function() {\n      return this.impl.toString();\n    }\n  };\n\n  // IE9 does not have createContextualFragment.\n  if (OriginalRange.prototype.createContextualFragment) {\n    Range.prototype.createContextualFragment = function(html) {\n      return wrap(this.impl.createContextualFragment(html));\n    };\n  }\n\n  registerWrapper(window.Range, Range, document.createRange());\n\n  scope.wrappers.Range = Range;\n\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var GetElementsByInterface = scope.GetElementsByInterface;\n  var ParentNodeInterface = scope.ParentNodeInterface;\n  var SelectorsInterface = scope.SelectorsInterface;\n  var mixin = scope.mixin;\n  var registerObject = scope.registerObject;\n\n  var DocumentFragment = registerObject(document.createDocumentFragment());\n  mixin(DocumentFragment.prototype, ParentNodeInterface);\n  mixin(DocumentFragment.prototype, SelectorsInterface);\n  mixin(DocumentFragment.prototype, GetElementsByInterface);\n\n  var Comment = registerObject(document.createComment(''));\n\n  scope.wrappers.Comment = Comment;\n  scope.wrappers.DocumentFragment = DocumentFragment;\n\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var DocumentFragment = scope.wrappers.DocumentFragment;\n  var TreeScope = scope.TreeScope;\n  var elementFromPoint = scope.elementFromPoint;\n  var getInnerHTML = scope.getInnerHTML;\n  var getTreeScope = scope.getTreeScope;\n  var mixin = scope.mixin;\n  var rewrap = scope.rewrap;\n  var setInnerHTML = scope.setInnerHTML;\n  var unwrap = scope.unwrap;\n\n  var shadowHostTable = new WeakMap();\n  var nextOlderShadowTreeTable = new WeakMap();\n\n  var spaceCharRe = /[ \\t\\n\\r\\f]/;\n\n  function ShadowRoot(hostWrapper) {\n    var node = unwrap(hostWrapper.impl.ownerDocument.createDocumentFragment());\n    DocumentFragment.call(this, node);\n\n    // createDocumentFragment associates the node with a wrapper\n    // DocumentFragment instance. Override that.\n    rewrap(node, this);\n\n    this.treeScope_ = new TreeScope(this, getTreeScope(hostWrapper));\n\n    var oldShadowRoot = hostWrapper.shadowRoot;\n    nextOlderShadowTreeTable.set(this, oldShadowRoot);\n\n    shadowHostTable.set(this, hostWrapper);\n  }\n  ShadowRoot.prototype = Object.create(DocumentFragment.prototype);\n  mixin(ShadowRoot.prototype, {\n    get innerHTML() {\n      return getInnerHTML(this);\n    },\n    set innerHTML(value) {\n      setInnerHTML(this, value);\n      this.invalidateShadowRenderer();\n    },\n\n    get olderShadowRoot() {\n      return nextOlderShadowTreeTable.get(this) || null;\n    },\n\n    get host() {\n      return shadowHostTable.get(this) || null;\n    },\n\n    invalidateShadowRenderer: function() {\n      return shadowHostTable.get(this).invalidateShadowRenderer();\n    },\n\n    elementFromPoint: function(x, y) {\n      return elementFromPoint(this, this.ownerDocument, x, y);\n    },\n\n    getElementById: function(id) {\n      if (spaceCharRe.test(id))\n        return null;\n      return this.querySelector('[id=\"' + id + '\"]');\n    }\n  });\n\n  scope.wrappers.ShadowRoot = ShadowRoot;\n\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is governed by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var Element = scope.wrappers.Element;\n  var HTMLContentElement = scope.wrappers.HTMLContentElement;\n  var HTMLShadowElement = scope.wrappers.HTMLShadowElement;\n  var Node = scope.wrappers.Node;\n  var ShadowRoot = scope.wrappers.ShadowRoot;\n  var assert = scope.assert;\n  var getTreeScope = scope.getTreeScope;\n  var mixin = scope.mixin;\n  var oneOf = scope.oneOf;\n  var unwrap = scope.unwrap;\n  var wrap = scope.wrap;\n\n  /**\n   * Updates the fields of a wrapper to a snapshot of the logical DOM as needed.\n   * Up means parentNode\n   * Sideways means previous and next sibling.\n   * @param {!Node} wrapper\n   */\n  function updateWrapperUpAndSideways(wrapper) {\n    wrapper.previousSibling_ = wrapper.previousSibling;\n    wrapper.nextSibling_ = wrapper.nextSibling;\n    wrapper.parentNode_ = wrapper.parentNode;\n  }\n\n  /**\n   * Updates the fields of a wrapper to a snapshot of the logical DOM as needed.\n   * Down means first and last child\n   * @param {!Node} wrapper\n   */\n  function updateWrapperDown(wrapper) {\n    wrapper.firstChild_ = wrapper.firstChild;\n    wrapper.lastChild_ = wrapper.lastChild;\n  }\n\n  function updateAllChildNodes(parentNodeWrapper) {\n    assert(parentNodeWrapper instanceof Node);\n    for (var childWrapper = parentNodeWrapper.firstChild;\n         childWrapper;\n         childWrapper = childWrapper.nextSibling) {\n      updateWrapperUpAndSideways(childWrapper);\n    }\n    updateWrapperDown(parentNodeWrapper);\n  }\n\n  function insertBefore(parentNodeWrapper, newChildWrapper, refChildWrapper) {\n    var parentNode = unwrap(parentNodeWrapper);\n    var newChild = unwrap(newChildWrapper);\n    var refChild = refChildWrapper ? unwrap(refChildWrapper) : null;\n\n    remove(newChildWrapper);\n    updateWrapperUpAndSideways(newChildWrapper);\n\n    if (!refChildWrapper) {\n      parentNodeWrapper.lastChild_ = parentNodeWrapper.lastChild;\n      if (parentNodeWrapper.lastChild === parentNodeWrapper.firstChild)\n        parentNodeWrapper.firstChild_ = parentNodeWrapper.firstChild;\n\n      var lastChildWrapper = wrap(parentNode.lastChild);\n      if (lastChildWrapper)\n        lastChildWrapper.nextSibling_ = lastChildWrapper.nextSibling;\n    } else {\n      if (parentNodeWrapper.firstChild === refChildWrapper)\n        parentNodeWrapper.firstChild_ = refChildWrapper;\n\n      refChildWrapper.previousSibling_ = refChildWrapper.previousSibling;\n    }\n\n    parentNode.insertBefore(newChild, refChild);\n  }\n\n  function remove(nodeWrapper) {\n    var node = unwrap(nodeWrapper)\n    var parentNode = node.parentNode;\n    if (!parentNode)\n      return;\n\n    var parentNodeWrapper = wrap(parentNode);\n    updateWrapperUpAndSideways(nodeWrapper);\n\n    if (nodeWrapper.previousSibling)\n      nodeWrapper.previousSibling.nextSibling_ = nodeWrapper;\n    if (nodeWrapper.nextSibling)\n      nodeWrapper.nextSibling.previousSibling_ = nodeWrapper;\n\n    if (parentNodeWrapper.lastChild === nodeWrapper)\n      parentNodeWrapper.lastChild_ = nodeWrapper;\n    if (parentNodeWrapper.firstChild === nodeWrapper)\n      parentNodeWrapper.firstChild_ = nodeWrapper;\n\n    parentNode.removeChild(node);\n  }\n\n  var distributedChildNodesTable = new WeakMap();\n  var eventParentsTable = new WeakMap();\n  var insertionParentTable = new WeakMap();\n  var rendererForHostTable = new WeakMap();\n\n  function distributeChildToInsertionPoint(child, insertionPoint) {\n    getDistributedChildNodes(insertionPoint).push(child);\n    assignToInsertionPoint(child, insertionPoint);\n\n    var eventParents = eventParentsTable.get(child);\n    if (!eventParents)\n      eventParentsTable.set(child, eventParents = []);\n    eventParents.push(insertionPoint);\n  }\n\n  function resetDistributedChildNodes(insertionPoint) {\n    distributedChildNodesTable.set(insertionPoint, []);\n  }\n\n  function getDistributedChildNodes(insertionPoint) {\n    var rv = distributedChildNodesTable.get(insertionPoint);\n    if (!rv)\n      distributedChildNodesTable.set(insertionPoint, rv = []);\n    return rv;\n  }\n\n  function getChildNodesSnapshot(node) {\n    var result = [], i = 0;\n    for (var child = node.firstChild; child; child = child.nextSibling) {\n      result[i++] = child;\n    }\n    return result;\n  }\n\n  /**\n   * Visits all nodes in the tree that fulfils the |predicate|. If the |visitor|\n   * function returns |false| the traversal is aborted.\n   * @param {!Node} tree\n   * @param {function(!Node) : boolean} predicate\n   * @param {function(!Node) : *} visitor\n   */\n  function visit(tree, predicate, visitor) {\n    // This operates on logical DOM.\n    for (var node = tree.firstChild; node; node = node.nextSibling) {\n      if (predicate(node)) {\n        if (visitor(node) === false)\n          return;\n      } else {\n        visit(node, predicate, visitor);\n      }\n    }\n  }\n\n  // Matching Insertion Points\n  // http://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#matching-insertion-points\n\n  // TODO(arv): Verify this... I don't remember why I picked this regexp.\n  var selectorMatchRegExp = /^[*.:#[a-zA-Z_|]/;\n\n  var allowedPseudoRegExp = new RegExp('^:(' + [\n    'link',\n    'visited',\n    'target',\n    'enabled',\n    'disabled',\n    'checked',\n    'indeterminate',\n    'nth-child',\n    'nth-last-child',\n    'nth-of-type',\n    'nth-last-of-type',\n    'first-child',\n    'last-child',\n    'first-of-type',\n    'last-of-type',\n    'only-of-type',\n  ].join('|') + ')');\n\n\n  /**\n   * @param {Element} node\n   * @oaram {Element} point The insertion point element.\n   * @return {boolean} Whether the node matches the insertion point.\n   */\n  function matchesCriteria(node, point) {\n    var select = point.getAttribute('select');\n    if (!select)\n      return true;\n\n    // Here we know the select attribute is a non empty string.\n    select = select.trim();\n    if (!select)\n      return true;\n\n    if (!(node instanceof Element))\n      return false;\n\n    // The native matches function in IE9 does not correctly work with elements\n    // that are not in the document.\n    // TODO(arv): Implement matching in JS.\n    // https://github.com/Polymer/ShadowDOM/issues/361\n    if (select === '*' || select === node.localName)\n      return true;\n\n    // TODO(arv): This does not seem right. Need to check for a simple selector.\n    if (!selectorMatchRegExp.test(select))\n      return false;\n\n    // TODO(arv): This no longer matches the spec.\n    if (select[0] === ':' && !allowedPseudoRegExp.test(select))\n      return false;\n\n    try {\n      return node.matches(select);\n    } catch (ex) {\n      // Invalid selector.\n      return false;\n    }\n  }\n\n  var request = oneOf(window, [\n    'requestAnimationFrame',\n    'mozRequestAnimationFrame',\n    'webkitRequestAnimationFrame',\n    'setTimeout'\n  ]);\n\n  var pendingDirtyRenderers = [];\n  var renderTimer;\n\n  function renderAllPending() {\n    // TODO(arv): Order these in document order. That way we do not have to\n    // render something twice.\n    for (var i = 0; i < pendingDirtyRenderers.length; i++) {\n      var renderer = pendingDirtyRenderers[i];\n      var parentRenderer = renderer.parentRenderer;\n      if (parentRenderer && parentRenderer.dirty)\n        continue;\n      renderer.render();\n    }\n\n    pendingDirtyRenderers = [];\n  }\n\n  function handleRequestAnimationFrame() {\n    renderTimer = null;\n    renderAllPending();\n  }\n\n  /**\n   * Returns existing shadow renderer for a host or creates it if it is needed.\n   * @params {!Element} host\n   * @return {!ShadowRenderer}\n   */\n  function getRendererForHost(host) {\n    var renderer = rendererForHostTable.get(host);\n    if (!renderer) {\n      renderer = new ShadowRenderer(host);\n      rendererForHostTable.set(host, renderer);\n    }\n    return renderer;\n  }\n\n  function getShadowRootAncestor(node) {\n    var root = getTreeScope(node).root;\n    if (root instanceof ShadowRoot)\n      return root;\n    return null;\n  }\n\n  function getRendererForShadowRoot(shadowRoot) {\n    return getRendererForHost(shadowRoot.host);\n  }\n\n  var spliceDiff = new ArraySplice();\n  spliceDiff.equals = function(renderNode, rawNode) {\n    return unwrap(renderNode.node) === rawNode;\n  };\n\n  /**\n   * RenderNode is used as an in memory \"render tree\". When we render the\n   * composed tree we create a tree of RenderNodes, then we diff this against\n   * the real DOM tree and make minimal changes as needed.\n   */\n  function RenderNode(node) {\n    this.skip = false;\n    this.node = node;\n    this.childNodes = [];\n  }\n\n  RenderNode.prototype = {\n    append: function(node) {\n      var rv = new RenderNode(node);\n      this.childNodes.push(rv);\n      return rv;\n    },\n\n    sync: function(opt_added) {\n      if (this.skip)\n        return;\n\n      var nodeWrapper = this.node;\n      // plain array of RenderNodes\n      var newChildren = this.childNodes;\n      // plain array of real nodes.\n      var oldChildren = getChildNodesSnapshot(unwrap(nodeWrapper));\n      var added = opt_added || new WeakMap();\n\n      var splices = spliceDiff.calculateSplices(newChildren, oldChildren);\n\n      var newIndex = 0, oldIndex = 0;\n      var lastIndex = 0;\n      for (var i = 0; i < splices.length; i++) {\n        var splice = splices[i];\n        for (; lastIndex < splice.index; lastIndex++) {\n          oldIndex++;\n          newChildren[newIndex++].sync(added);\n        }\n\n        var removedCount = splice.removed.length;\n        for (var j = 0; j < removedCount; j++) {\n          var wrapper = wrap(oldChildren[oldIndex++]);\n          if (!added.get(wrapper))\n            remove(wrapper);\n        }\n\n        var addedCount = splice.addedCount;\n        var refNode = oldChildren[oldIndex] && wrap(oldChildren[oldIndex]);\n        for (var j = 0; j < addedCount; j++) {\n          var newChildRenderNode = newChildren[newIndex++];\n          var newChildWrapper = newChildRenderNode.node;\n          insertBefore(nodeWrapper, newChildWrapper, refNode);\n\n          // Keep track of added so that we do not remove the node after it\n          // has been added.\n          added.set(newChildWrapper, true);\n\n          newChildRenderNode.sync(added);\n        }\n\n        lastIndex += addedCount;\n      }\n\n      for (var i = lastIndex; i < newChildren.length; i++) {\n        newChildren[i].sync(added);\n      }\n    }\n  };\n\n  function ShadowRenderer(host) {\n    this.host = host;\n    this.dirty = false;\n    this.invalidateAttributes();\n    this.associateNode(host);\n  }\n\n  ShadowRenderer.prototype = {\n\n    // http://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#rendering-shadow-trees\n    render: function(opt_renderNode) {\n      if (!this.dirty)\n        return;\n\n      this.invalidateAttributes();\n      this.treeComposition();\n\n      var host = this.host;\n      var shadowRoot = host.shadowRoot;\n\n      this.associateNode(host);\n      var topMostRenderer = !renderNode;\n      var renderNode = opt_renderNode || new RenderNode(host);\n\n      for (var node = shadowRoot.firstChild; node; node = node.nextSibling) {\n        this.renderNode(shadowRoot, renderNode, node, false);\n      }\n\n      if (topMostRenderer)\n        renderNode.sync();\n\n      this.dirty = false;\n    },\n\n    get parentRenderer() {\n      return getTreeScope(this.host).renderer;\n    },\n\n    invalidate: function() {\n      if (!this.dirty) {\n        this.dirty = true;\n        pendingDirtyRenderers.push(this);\n        if (renderTimer)\n          return;\n        renderTimer = window[request](handleRequestAnimationFrame, 0);\n      }\n    },\n\n    renderNode: function(shadowRoot, renderNode, node, isNested) {\n      if (isShadowHost(node)) {\n        renderNode = renderNode.append(node);\n        var renderer = getRendererForHost(node);\n        renderer.dirty = true;  // Need to rerender due to reprojection.\n        renderer.render(renderNode);\n      } else if (isInsertionPoint(node)) {\n        this.renderInsertionPoint(shadowRoot, renderNode, node, isNested);\n      } else if (isShadowInsertionPoint(node)) {\n        this.renderShadowInsertionPoint(shadowRoot, renderNode, node);\n      } else {\n        this.renderAsAnyDomTree(shadowRoot, renderNode, node, isNested);\n      }\n    },\n\n    renderAsAnyDomTree: function(shadowRoot, renderNode, node, isNested) {\n      renderNode = renderNode.append(node);\n\n      if (isShadowHost(node)) {\n        var renderer = getRendererForHost(node);\n        renderNode.skip = !renderer.dirty;\n        renderer.render(renderNode);\n      } else {\n        for (var child = node.firstChild; child; child = child.nextSibling) {\n          this.renderNode(shadowRoot, renderNode, child, isNested);\n        }\n      }\n    },\n\n    renderInsertionPoint: function(shadowRoot, renderNode, insertionPoint,\n                                   isNested) {\n      var distributedChildNodes = getDistributedChildNodes(insertionPoint);\n      if (distributedChildNodes.length) {\n        this.associateNode(insertionPoint);\n\n        for (var i = 0; i < distributedChildNodes.length; i++) {\n          var child = distributedChildNodes[i];\n          if (isInsertionPoint(child) && isNested)\n            this.renderInsertionPoint(shadowRoot, renderNode, child, isNested);\n          else\n            this.renderAsAnyDomTree(shadowRoot, renderNode, child, isNested);\n        }\n      } else {\n        this.renderFallbackContent(shadowRoot, renderNode, insertionPoint);\n      }\n      this.associateNode(insertionPoint.parentNode);\n    },\n\n    renderShadowInsertionPoint: function(shadowRoot, renderNode,\n                                         shadowInsertionPoint) {\n      var nextOlderTree = shadowRoot.olderShadowRoot;\n      if (nextOlderTree) {\n        assignToInsertionPoint(nextOlderTree, shadowInsertionPoint);\n        this.associateNode(shadowInsertionPoint.parentNode);\n        for (var node = nextOlderTree.firstChild;\n             node;\n             node = node.nextSibling) {\n          this.renderNode(nextOlderTree, renderNode, node, true);\n        }\n      } else {\n        this.renderFallbackContent(shadowRoot, renderNode,\n                                   shadowInsertionPoint);\n      }\n    },\n\n    renderFallbackContent: function(shadowRoot, renderNode, fallbackHost) {\n      this.associateNode(fallbackHost);\n      this.associateNode(fallbackHost.parentNode);\n      for (var node = fallbackHost.firstChild; node; node = node.nextSibling) {\n        this.renderAsAnyDomTree(shadowRoot, renderNode, node, false);\n      }\n    },\n\n    /**\n     * Invalidates the attributes used to keep track of which attributes may\n     * cause the renderer to be invalidated.\n     */\n    invalidateAttributes: function() {\n      this.attributes = Object.create(null);\n    },\n\n    /**\n     * Parses the selector and makes this renderer dependent on the attribute\n     * being used in the selector.\n     * @param {string} selector\n     */\n    updateDependentAttributes: function(selector) {\n      if (!selector)\n        return;\n\n      var attributes = this.attributes;\n\n      // .class\n      if (/\\.\\w+/.test(selector))\n        attributes['class'] = true;\n\n      // #id\n      if (/#\\w+/.test(selector))\n        attributes['id'] = true;\n\n      selector.replace(/\\[\\s*([^\\s=\\|~\\]]+)/g, function(_, name) {\n        attributes[name] = true;\n      });\n\n      // Pseudo selectors have been removed from the spec.\n    },\n\n    dependsOnAttribute: function(name) {\n      return this.attributes[name];\n    },\n\n    // http://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#dfn-distribution-algorithm\n    distribute: function(tree, pool) {\n      var self = this;\n\n      visit(tree, isActiveInsertionPoint,\n          function(insertionPoint) {\n            resetDistributedChildNodes(insertionPoint);\n            self.updateDependentAttributes(\n                insertionPoint.getAttribute('select'));\n\n            for (var i = 0; i < pool.length; i++) {  // 1.2\n              var node = pool[i];  // 1.2.1\n              if (node === undefined)  // removed\n                continue;\n              if (matchesCriteria(node, insertionPoint)) {  // 1.2.2\n                distributeChildToInsertionPoint(node, insertionPoint);  // 1.2.2.1\n                pool[i] = undefined;  // 1.2.2.2\n              }\n            }\n          });\n    },\n\n    // http://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#dfn-tree-composition\n    treeComposition: function () {\n      var shadowHost = this.host;\n      var tree = shadowHost.shadowRoot;  // 1.\n      var pool = [];  // 2.\n\n      for (var child = shadowHost.firstChild;\n           child;\n           child = child.nextSibling) {  // 3.\n        if (isInsertionPoint(child)) {  // 3.2.\n          var reprojected = getDistributedChildNodes(child);  // 3.2.1.\n          // if reprojected is undef... reset it?\n          if (!reprojected || !reprojected.length)  // 3.2.2.\n            reprojected = getChildNodesSnapshot(child);\n          pool.push.apply(pool, reprojected);  // 3.2.3.\n        } else {\n          pool.push(child); // 3.3.\n        }\n      }\n\n      var shadowInsertionPoint, point;\n      while (tree) {  // 4.\n        // 4.1.\n        shadowInsertionPoint = undefined;  // Reset every iteration.\n        visit(tree, isActiveShadowInsertionPoint, function(point) {\n          shadowInsertionPoint = point;\n          return false;\n        });\n        point = shadowInsertionPoint;\n\n        this.distribute(tree, pool);  // 4.2.\n        if (point) {  // 4.3.\n          var nextOlderTree = tree.olderShadowRoot;  // 4.3.1.\n          if (!nextOlderTree) {\n            break;  // 4.3.1.1.\n          } else {\n            tree = nextOlderTree;  // 4.3.2.2.\n            assignToInsertionPoint(tree, point);  // 4.3.2.2.\n            continue;  // 4.3.2.3.\n          }\n        } else {\n          break;  // 4.4.\n        }\n      }\n    },\n\n    associateNode: function(node) {\n      node.impl.polymerShadowRenderer_ = this;\n    }\n  };\n\n  function isInsertionPoint(node) {\n    // Should this include <shadow>?\n    return node instanceof HTMLContentElement;\n  }\n\n  function isActiveInsertionPoint(node) {\n    // <content> inside another <content> or <shadow> is considered inactive.\n    return node instanceof HTMLContentElement;\n  }\n\n  function isShadowInsertionPoint(node) {\n    return node instanceof HTMLShadowElement;\n  }\n\n  function isActiveShadowInsertionPoint(node) {\n    // <shadow> inside another <content> or <shadow> is considered inactive.\n    return node instanceof HTMLShadowElement;\n  }\n\n  function isShadowHost(shadowHost) {\n    return shadowHost.shadowRoot;\n  }\n\n  function getShadowTrees(host) {\n    var trees = [];\n\n    for (var tree = host.shadowRoot; tree; tree = tree.olderShadowRoot) {\n      trees.push(tree);\n    }\n    return trees;\n  }\n\n  function assignToInsertionPoint(tree, point) {\n    insertionParentTable.set(tree, point);\n  }\n\n  // http://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#rendering-shadow-trees\n  function render(host) {\n    new ShadowRenderer(host).render();\n  };\n\n  // Need to rerender shadow host when:\n  //\n  // - a direct child to the ShadowRoot is added or removed\n  // - a direct child to the host is added or removed\n  // - a new shadow root is created\n  // - a direct child to a content/shadow element is added or removed\n  // - a sibling to a content/shadow element is added or removed\n  // - content[select] is changed\n  // - an attribute in a direct child to a host is modified\n\n  /**\n   * This gets called when a node was added or removed to it.\n   */\n  Node.prototype.invalidateShadowRenderer = function(force) {\n    var renderer = this.impl.polymerShadowRenderer_;\n    if (renderer) {\n      renderer.invalidate();\n      return true;\n    }\n\n    return false;\n  };\n\n  HTMLContentElement.prototype.getDistributedNodes = function() {\n    // TODO(arv): We should only rerender the dirty ancestor renderers (from\n    // the root and down).\n    renderAllPending();\n    return getDistributedChildNodes(this);\n  };\n\n  HTMLShadowElement.prototype.nodeIsInserted_ =\n  HTMLContentElement.prototype.nodeIsInserted_ = function() {\n    // Invalidate old renderer if any.\n    this.invalidateShadowRenderer();\n\n    var shadowRoot = getShadowRootAncestor(this);\n    var renderer;\n    if (shadowRoot)\n      renderer = getRendererForShadowRoot(shadowRoot);\n    this.impl.polymerShadowRenderer_ = renderer;\n    if (renderer)\n      renderer.invalidate();\n  };\n\n  scope.eventParentsTable = eventParentsTable;\n  scope.getRendererForHost = getRendererForHost;\n  scope.getShadowTrees = getShadowTrees;\n  scope.insertionParentTable = insertionParentTable;\n  scope.renderAllPending = renderAllPending;\n\n  // Exposed for testing\n  scope.visual = {\n    insertBefore: insertBefore,\n    remove: remove,\n  };\n\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var HTMLElement = scope.wrappers.HTMLElement;\n  var assert = scope.assert;\n  var mixin = scope.mixin;\n  var registerWrapper = scope.registerWrapper;\n  var unwrap = scope.unwrap;\n  var wrap = scope.wrap;\n\n  var elementsWithFormProperty = [\n    'HTMLButtonElement',\n    'HTMLFieldSetElement',\n    'HTMLInputElement',\n    'HTMLKeygenElement',\n    'HTMLLabelElement',\n    'HTMLLegendElement',\n    'HTMLObjectElement',\n    // HTMLOptionElement is handled in HTMLOptionElement.js\n    'HTMLOutputElement',\n    // HTMLSelectElement is handled in HTMLSelectElement.js\n    'HTMLTextAreaElement',\n  ];\n\n  function createWrapperConstructor(name) {\n    if (!window[name])\n      return;\n\n    // Ensure we are not overriding an already existing constructor.\n    assert(!scope.wrappers[name]);\n\n    var GeneratedWrapper = function(node) {\n      // At this point all of them extend HTMLElement.\n      HTMLElement.call(this, node);\n    }\n    GeneratedWrapper.prototype = Object.create(HTMLElement.prototype);\n    mixin(GeneratedWrapper.prototype, {\n      get form() {\n        return wrap(unwrap(this).form);\n      },\n    });\n\n    registerWrapper(window[name], GeneratedWrapper,\n        document.createElement(name.slice(4, -7)));\n    scope.wrappers[name] = GeneratedWrapper;\n  }\n\n  elementsWithFormProperty.forEach(createWrapperConstructor);\n\n})(window.ShadowDOMPolyfill);\n","// Copyright 2014 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var registerWrapper = scope.registerWrapper;\n  var unwrap = scope.unwrap;\n  var unwrapIfNeeded = scope.unwrapIfNeeded;\n  var wrap = scope.wrap;\n\n  var OriginalSelection = window.Selection;\n\n  function Selection(impl) {\n    this.impl = impl;\n  }\n  Selection.prototype = {\n    get anchorNode() {\n      return wrap(this.impl.anchorNode);\n    },\n    get focusNode() {\n      return wrap(this.impl.focusNode);\n    },\n    addRange: function(range) {\n      this.impl.addRange(unwrap(range));\n    },\n    collapse: function(node, index) {\n      this.impl.collapse(unwrapIfNeeded(node), index);\n    },\n    containsNode: function(node, allowPartial) {\n      return this.impl.containsNode(unwrapIfNeeded(node), allowPartial);\n    },\n    extend: function(node, offset) {\n      this.impl.extend(unwrapIfNeeded(node), offset);\n    },\n    getRangeAt: function(index) {\n      return wrap(this.impl.getRangeAt(index));\n    },\n    removeRange: function(range) {\n      this.impl.removeRange(unwrap(range));\n    },\n    selectAllChildren: function(node) {\n      this.impl.selectAllChildren(unwrapIfNeeded(node));\n    },\n    toString: function() {\n      return this.impl.toString();\n    }\n  };\n\n  // WebKit extensions. Not implemented.\n  // readonly attribute Node baseNode;\n  // readonly attribute long baseOffset;\n  // readonly attribute Node extentNode;\n  // readonly attribute long extentOffset;\n  // [RaisesException] void setBaseAndExtent([Default=Undefined] optional Node baseNode,\n  //                       [Default=Undefined] optional long baseOffset,\n  //                       [Default=Undefined] optional Node extentNode,\n  //                       [Default=Undefined] optional long extentOffset);\n  // [RaisesException, ImplementedAs=collapse] void setPosition([Default=Undefined] optional Node node,\n  //                  [Default=Undefined] optional long offset);\n\n  registerWrapper(window.Selection, Selection, window.getSelection());\n\n  scope.wrappers.Selection = Selection;\n\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var GetElementsByInterface = scope.GetElementsByInterface;\n  var Node = scope.wrappers.Node;\n  var ParentNodeInterface = scope.ParentNodeInterface;\n  var Selection = scope.wrappers.Selection;\n  var SelectorsInterface = scope.SelectorsInterface;\n  var ShadowRoot = scope.wrappers.ShadowRoot;\n  var TreeScope = scope.TreeScope;\n  var cloneNode = scope.cloneNode;\n  var defineWrapGetter = scope.defineWrapGetter;\n  var elementFromPoint = scope.elementFromPoint;\n  var forwardMethodsToWrapper = scope.forwardMethodsToWrapper;\n  var matchesNames = scope.matchesNames;\n  var mixin = scope.mixin;\n  var registerWrapper = scope.registerWrapper;\n  var renderAllPending = scope.renderAllPending;\n  var rewrap = scope.rewrap;\n  var unwrap = scope.unwrap;\n  var wrap = scope.wrap;\n  var wrapEventTargetMethods = scope.wrapEventTargetMethods;\n  var wrapNodeList = scope.wrapNodeList;\n\n  var implementationTable = new WeakMap();\n\n  function Document(node) {\n    Node.call(this, node);\n    this.treeScope_ = new TreeScope(this, null);\n  }\n  Document.prototype = Object.create(Node.prototype);\n\n  defineWrapGetter(Document, 'documentElement');\n\n  // Conceptually both body and head can be in a shadow but suporting that seems\n  // overkill at this point.\n  defineWrapGetter(Document, 'body');\n  defineWrapGetter(Document, 'head');\n\n  // document cannot be overridden so we override a bunch of its methods\n  // directly on the instance.\n\n  function wrapMethod(name) {\n    var original = document[name];\n    Document.prototype[name] = function() {\n      return wrap(original.apply(this.impl, arguments));\n    };\n  }\n\n  [\n    'createComment',\n    'createDocumentFragment',\n    'createElement',\n    'createElementNS',\n    'createEvent',\n    'createEventNS',\n    'createRange',\n    'createTextNode',\n    'getElementById'\n  ].forEach(wrapMethod);\n\n  var originalAdoptNode = document.adoptNode;\n\n  function adoptNodeNoRemove(node, doc) {\n    originalAdoptNode.call(doc.impl, unwrap(node));\n    adoptSubtree(node, doc);\n  }\n\n  function adoptSubtree(node, doc) {\n    if (node.shadowRoot)\n      doc.adoptNode(node.shadowRoot);\n    if (node instanceof ShadowRoot)\n      adoptOlderShadowRoots(node, doc);\n    for (var child = node.firstChild; child; child = child.nextSibling) {\n      adoptSubtree(child, doc);\n    }\n  }\n\n  function adoptOlderShadowRoots(shadowRoot, doc) {\n    var oldShadowRoot = shadowRoot.olderShadowRoot;\n    if (oldShadowRoot)\n      doc.adoptNode(oldShadowRoot);\n  }\n\n  var originalGetSelection = document.getSelection;\n\n  mixin(Document.prototype, {\n    adoptNode: function(node) {\n      if (node.parentNode)\n        node.parentNode.removeChild(node);\n      adoptNodeNoRemove(node, this);\n      return node;\n    },\n    elementFromPoint: function(x, y) {\n      return elementFromPoint(this, this, x, y);\n    },\n    importNode: function(node, deep) {\n      return cloneNode(node, deep, this.impl);\n    },\n    getSelection: function() {\n      renderAllPending();\n      return new Selection(originalGetSelection.call(unwrap(this)));\n    }\n  });\n\n  if (document.registerElement) {\n    var originalRegisterElement = document.registerElement;\n    Document.prototype.registerElement = function(tagName, object) {\n      var prototype, extendsOption;\n      if (object !== undefined) {\n        prototype = object.prototype;\n        extendsOption = object.extends;\n      }\n\n      if (!prototype)\n        prototype = Object.create(HTMLElement.prototype);\n\n\n      // If we already used the object as a prototype for another custom\n      // element.\n      if (scope.nativePrototypeTable.get(prototype)) {\n        // TODO(arv): DOMException\n        throw new Error('NotSupportedError');\n      }\n\n      // Find first object on the prototype chain that already have a native\n      // prototype. Keep track of all the objects before that so we can create\n      // a similar structure for the native case.\n      var proto = Object.getPrototypeOf(prototype);\n      var nativePrototype;\n      var prototypes = [];\n      while (proto) {\n        nativePrototype = scope.nativePrototypeTable.get(proto);\n        if (nativePrototype)\n          break;\n        prototypes.push(proto);\n        proto = Object.getPrototypeOf(proto);\n      }\n\n      if (!nativePrototype) {\n        // TODO(arv): DOMException\n        throw new Error('NotSupportedError');\n      }\n\n      // This works by creating a new prototype object that is empty, but has\n      // the native prototype as its proto. The original prototype object\n      // passed into register is used as the wrapper prototype.\n\n      var newPrototype = Object.create(nativePrototype);\n      for (var i = prototypes.length - 1; i >= 0; i--) {\n        newPrototype = Object.create(newPrototype);\n      }\n\n      // Add callbacks if present.\n      // Names are taken from:\n      //   https://code.google.com/p/chromium/codesearch#chromium/src/third_party/WebKit/Source/bindings/v8/CustomElementConstructorBuilder.cpp&sq=package:chromium&type=cs&l=156\n      // and not from the spec since the spec is out of date.\n      [\n        'createdCallback',\n        'attachedCallback',\n        'detachedCallback',\n        'attributeChangedCallback',\n      ].forEach(function(name) {\n        var f = prototype[name];\n        if (!f)\n          return;\n        newPrototype[name] = function() {\n          // if this element has been wrapped prior to registration,\n          // the wrapper is stale; in this case rewrap\n          if (!(wrap(this) instanceof CustomElementConstructor)) {\n            rewrap(this);\n          }\n          f.apply(wrap(this), arguments);\n        };\n      });\n\n      var p = {prototype: newPrototype};\n      if (extendsOption)\n        p.extends = extendsOption;\n\n      function CustomElementConstructor(node) {\n        if (!node) {\n          if (extendsOption) {\n            return document.createElement(extendsOption, tagName);\n          } else {\n            return document.createElement(tagName);\n          }\n        }\n        this.impl = node;\n      }\n      CustomElementConstructor.prototype = prototype;\n      CustomElementConstructor.prototype.constructor = CustomElementConstructor;\n\n      scope.constructorTable.set(newPrototype, CustomElementConstructor);\n      scope.nativePrototypeTable.set(prototype, newPrototype);\n\n      // registration is synchronous so do it last\n      var nativeConstructor = originalRegisterElement.call(unwrap(this),\n          tagName, p);\n      return CustomElementConstructor;\n    };\n\n    forwardMethodsToWrapper([\n      window.HTMLDocument || window.Document,  // Gecko adds these to HTMLDocument\n    ], [\n      'registerElement',\n    ]);\n  }\n\n  // We also override some of the methods on document.body and document.head\n  // for convenience.\n  forwardMethodsToWrapper([\n    window.HTMLBodyElement,\n    window.HTMLDocument || window.Document,  // Gecko adds these to HTMLDocument\n    window.HTMLHeadElement,\n    window.HTMLHtmlElement,\n  ], [\n    'appendChild',\n    'compareDocumentPosition',\n    'contains',\n    'getElementsByClassName',\n    'getElementsByTagName',\n    'getElementsByTagNameNS',\n    'insertBefore',\n    'querySelector',\n    'querySelectorAll',\n    'removeChild',\n    'replaceChild',\n  ].concat(matchesNames));\n\n  forwardMethodsToWrapper([\n    window.HTMLDocument || window.Document,  // Gecko adds these to HTMLDocument\n  ], [\n    'adoptNode',\n    'importNode',\n    'contains',\n    'createComment',\n    'createDocumentFragment',\n    'createElement',\n    'createElementNS',\n    'createEvent',\n    'createEventNS',\n    'createRange',\n    'createTextNode',\n    'elementFromPoint',\n    'getElementById',\n    'getSelection',\n  ]);\n\n  mixin(Document.prototype, GetElementsByInterface);\n  mixin(Document.prototype, ParentNodeInterface);\n  mixin(Document.prototype, SelectorsInterface);\n\n  mixin(Document.prototype, {\n    get implementation() {\n      var implementation = implementationTable.get(this);\n      if (implementation)\n        return implementation;\n      implementation =\n          new DOMImplementation(unwrap(this).implementation);\n      implementationTable.set(this, implementation);\n      return implementation;\n    }\n  });\n\n  registerWrapper(window.Document, Document,\n      document.implementation.createHTMLDocument(''));\n\n  // Both WebKit and Gecko uses HTMLDocument for document. HTML5/DOM only has\n  // one Document interface and IE implements the standard correctly.\n  if (window.HTMLDocument)\n    registerWrapper(window.HTMLDocument, Document);\n\n  wrapEventTargetMethods([\n    window.HTMLBodyElement,\n    window.HTMLDocument || window.Document,  // Gecko adds these to HTMLDocument\n    window.HTMLHeadElement,\n  ]);\n\n  function DOMImplementation(impl) {\n    this.impl = impl;\n  }\n\n  function wrapImplMethod(constructor, name) {\n    var original = document.implementation[name];\n    constructor.prototype[name] = function() {\n      return wrap(original.apply(this.impl, arguments));\n    };\n  }\n\n  function forwardImplMethod(constructor, name) {\n    var original = document.implementation[name];\n    constructor.prototype[name] = function() {\n      return original.apply(this.impl, arguments);\n    };\n  }\n\n  wrapImplMethod(DOMImplementation, 'createDocumentType');\n  wrapImplMethod(DOMImplementation, 'createDocument');\n  wrapImplMethod(DOMImplementation, 'createHTMLDocument');\n  forwardImplMethod(DOMImplementation, 'hasFeature');\n\n  registerWrapper(window.DOMImplementation, DOMImplementation);\n\n  forwardMethodsToWrapper([\n    window.DOMImplementation,\n  ], [\n    'createDocumentType',\n    'createDocument',\n    'createHTMLDocument',\n    'hasFeature',\n  ]);\n\n  scope.adoptNodeNoRemove = adoptNodeNoRemove;\n  scope.wrappers.DOMImplementation = DOMImplementation;\n  scope.wrappers.Document = Document;\n\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var EventTarget = scope.wrappers.EventTarget;\n  var Selection = scope.wrappers.Selection;\n  var mixin = scope.mixin;\n  var registerWrapper = scope.registerWrapper;\n  var renderAllPending = scope.renderAllPending;\n  var unwrap = scope.unwrap;\n  var unwrapIfNeeded = scope.unwrapIfNeeded;\n  var wrap = scope.wrap;\n\n  var OriginalWindow = window.Window;\n  var originalGetComputedStyle = window.getComputedStyle;\n  var originalGetSelection = window.getSelection;\n\n  function Window(impl) {\n    EventTarget.call(this, impl);\n  }\n  Window.prototype = Object.create(EventTarget.prototype);\n\n  OriginalWindow.prototype.getComputedStyle = function(el, pseudo) {\n    return wrap(this || window).getComputedStyle(unwrapIfNeeded(el), pseudo);\n  };\n\n  OriginalWindow.prototype.getSelection = function() {\n    return wrap(this || window).getSelection();\n  };\n\n  // Work around for https://bugzilla.mozilla.org/show_bug.cgi?id=943065\n  delete window.getComputedStyle;\n  delete window.getSelection;\n\n  ['addEventListener', 'removeEventListener', 'dispatchEvent'].forEach(\n      function(name) {\n        OriginalWindow.prototype[name] = function() {\n          var w = wrap(this || window);\n          return w[name].apply(w, arguments);\n        };\n\n        // Work around for https://bugzilla.mozilla.org/show_bug.cgi?id=943065\n        delete window[name];\n      });\n\n  mixin(Window.prototype, {\n    getComputedStyle: function(el, pseudo) {\n      renderAllPending();\n      return originalGetComputedStyle.call(unwrap(this), unwrapIfNeeded(el),\n                                           pseudo);\n    },\n    getSelection: function() {\n      renderAllPending();\n      return new Selection(originalGetSelection.call(unwrap(this)));\n    },\n  });\n\n  registerWrapper(OriginalWindow, Window);\n\n  scope.wrappers.Window = Window;\n\n})(window.ShadowDOMPolyfill);\n","/**\n * Copyright 2014 The Polymer Authors. All rights reserved.\n * Use of this source code is goverened by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(scope) {\n  'use strict';\n\n  var unwrap = scope.unwrap;\n\n  // DataTransfer (Clipboard in old Blink/WebKit) has a single method that\n  // requires wrapping. Since it is only a method we do not need a real wrapper,\n  // we can just override the method.\n\n  var OriginalDataTransfer = window.DataTransfer || window.Clipboard;\n  var OriginalDataTransferSetDragImage =\n      OriginalDataTransfer.prototype.setDragImage;\n\n  OriginalDataTransfer.prototype.setDragImage = function(image, x, y) {\n    OriginalDataTransferSetDragImage.call(this, unwrap(image), x, y);\n  };\n\n})(window.ShadowDOMPolyfill);\n","// Copyright 2013 The Polymer Authors. All rights reserved.\n// Use of this source code is goverened by a BSD-style\n// license that can be found in the LICENSE file.\n\n(function(scope) {\n  'use strict';\n\n  var isWrapperFor = scope.isWrapperFor;\n\n  // This is a list of the elements we currently override the global constructor\n  // for.\n  var elements = {\n    'a': 'HTMLAnchorElement',\n    // Do not create an applet element by default since it shows a warning in\n    // IE.\n    // https://github.com/Polymer/polymer/issues/217\n    // 'applet': 'HTMLAppletElement',\n    'area': 'HTMLAreaElement',\n    'audio': 'HTMLAudioElement',\n    'base': 'HTMLBaseElement',\n    'body': 'HTMLBodyElement',\n    'br': 'HTMLBRElement',\n    'button': 'HTMLButtonElement',\n    'canvas': 'HTMLCanvasElement',\n    'caption': 'HTMLTableCaptionElement',\n    'col': 'HTMLTableColElement',\n    // 'command': 'HTMLCommandElement',  // Not fully implemented in Gecko.\n    'content': 'HTMLContentElement',\n    'data': 'HTMLDataElement',\n    'datalist': 'HTMLDataListElement',\n    'del': 'HTMLModElement',\n    'dir': 'HTMLDirectoryElement',\n    'div': 'HTMLDivElement',\n    'dl': 'HTMLDListElement',\n    'embed': 'HTMLEmbedElement',\n    'fieldset': 'HTMLFieldSetElement',\n    'font': 'HTMLFontElement',\n    'form': 'HTMLFormElement',\n    'frame': 'HTMLFrameElement',\n    'frameset': 'HTMLFrameSetElement',\n    'h1': 'HTMLHeadingElement',\n    'head': 'HTMLHeadElement',\n    'hr': 'HTMLHRElement',\n    'html': 'HTMLHtmlElement',\n    'iframe': 'HTMLIFrameElement',\n    'img': 'HTMLImageElement',\n    'input': 'HTMLInputElement',\n    'keygen': 'HTMLKeygenElement',\n    'label': 'HTMLLabelElement',\n    'legend': 'HTMLLegendElement',\n    'li': 'HTMLLIElement',\n    'link': 'HTMLLinkElement',\n    'map': 'HTMLMapElement',\n    'marquee': 'HTMLMarqueeElement',\n    'menu': 'HTMLMenuElement',\n    'menuitem': 'HTMLMenuItemElement',\n    'meta': 'HTMLMetaElement',\n    'meter': 'HTMLMeterElement',\n    'object': 'HTMLObjectElement',\n    'ol': 'HTMLOListElement',\n    'optgroup': 'HTMLOptGroupElement',\n    'option': 'HTMLOptionElement',\n    'output': 'HTMLOutputElement',\n    'p': 'HTMLParagraphElement',\n    'param': 'HTMLParamElement',\n    'pre': 'HTMLPreElement',\n    'progress': 'HTMLProgressElement',\n    'q': 'HTMLQuoteElement',\n    'script': 'HTMLScriptElement',\n    'select': 'HTMLSelectElement',\n    'shadow': 'HTMLShadowElement',\n    'source': 'HTMLSourceElement',\n    'span': 'HTMLSpanElement',\n    'style': 'HTMLStyleElement',\n    'table': 'HTMLTableElement',\n    'tbody': 'HTMLTableSectionElement',\n    // WebKit and Moz are wrong:\n    // https://bugs.webkit.org/show_bug.cgi?id=111469\n    // https://bugzilla.mozilla.org/show_bug.cgi?id=848096\n    // 'td': 'HTMLTableCellElement',\n    'template': 'HTMLTemplateElement',\n    'textarea': 'HTMLTextAreaElement',\n    'thead': 'HTMLTableSectionElement',\n    'time': 'HTMLTimeElement',\n    'title': 'HTMLTitleElement',\n    'tr': 'HTMLTableRowElement',\n    'track': 'HTMLTrackElement',\n    'ul': 'HTMLUListElement',\n    'video': 'HTMLVideoElement',\n  };\n\n  function overrideConstructor(tagName) {\n    var nativeConstructorName = elements[tagName];\n    var nativeConstructor = window[nativeConstructorName];\n    if (!nativeConstructor)\n      return;\n    var element = document.createElement(tagName);\n    var wrapperConstructor = element.constructor;\n    window[nativeConstructorName] = wrapperConstructor;\n  }\n\n  Object.keys(elements).forEach(overrideConstructor);\n\n  Object.getOwnPropertyNames(scope.wrappers).forEach(function(name) {\n    window[name] = scope.wrappers[name]\n  });\n\n})(window.ShadowDOMPolyfill);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function() {\n\n  // convenient global\n  window.wrap = ShadowDOMPolyfill.wrapIfNeeded;\n  window.unwrap = ShadowDOMPolyfill.unwrapIfNeeded;\n\n  // users may want to customize other types\n  // TODO(sjmiles): 'button' is now supported by ShadowDOMPolyfill, but\n  // I've left this code here in case we need to temporarily patch another\n  // type\n  /*\n  (function() {\n    var elts = {HTMLButtonElement: 'button'};\n    for (var c in elts) {\n      window[c] = function() { throw 'Patched Constructor'; };\n      window[c].prototype = Object.getPrototypeOf(\n          document.createElement(elts[c]));\n    }\n  })();\n  */\n\n  // patch in prefixed name\n  Object.defineProperty(Element.prototype, 'webkitShadowRoot',\n      Object.getOwnPropertyDescriptor(Element.prototype, 'shadowRoot'));\n\n  var originalCreateShadowRoot = Element.prototype.createShadowRoot;\n  Element.prototype.createShadowRoot = function() {\n    var root = originalCreateShadowRoot.call(this);\n    CustomElements.watchShadow(this);\n    return root;\n  };\n\n  Element.prototype.webkitCreateShadowRoot = Element.prototype.createShadowRoot;\n})();\n","/*\n * Copyright 2012 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n/*\n  This is a limited shim for ShadowDOM css styling.\n  https://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#styles\n  \n  The intention here is to support only the styling features which can be \n  relatively simply implemented. The goal is to allow users to avoid the \n  most obvious pitfalls and do so without compromising performance significantly. \n  For ShadowDOM styling that's not covered here, a set of best practices\n  can be provided that should allow users to accomplish more complex styling.\n\n  The following is a list of specific ShadowDOM styling features and a brief\n  discussion of the approach used to shim.\n\n  Shimmed features:\n\n  * :host, :host-context: ShadowDOM allows styling of the shadowRoot's host\n  element using the :host rule. To shim this feature, the :host styles are \n  reformatted and prefixed with a given scope name and promoted to a \n  document level stylesheet.\n  For example, given a scope name of .foo, a rule like this:\n  \n    :host {\n        background: red;\n      }\n    }\n  \n  becomes:\n  \n    .foo {\n      background: red;\n    }\n  \n  * encapsultion: Styles defined within ShadowDOM, apply only to \n  dom inside the ShadowDOM. Polymer uses one of two techniques to imlement\n  this feature.\n  \n  By default, rules are prefixed with the host element tag name \n  as a descendant selector. This ensures styling does not leak out of the 'top'\n  of the element's ShadowDOM. For example,\n\n  div {\n      font-weight: bold;\n    }\n  \n  becomes:\n\n  x-foo div {\n      font-weight: bold;\n    }\n  \n  becomes:\n\n\n  Alternatively, if Platform.ShadowCSS.strictStyling is set to true then \n  selectors are scoped by adding an attribute selector suffix to each\n  simple selector that contains the host element tag name. Each element \n  in the element's ShadowDOM template is also given the scope attribute. \n  Thus, these rules match only elements that have the scope attribute.\n  For example, given a scope name of x-foo, a rule like this:\n  \n    div {\n      font-weight: bold;\n    }\n  \n  becomes:\n  \n    div[x-foo] {\n      font-weight: bold;\n    }\n\n  Note that elements that are dynamically added to a scope must have the scope\n  selector added to them manually.\n\n  * upper/lower bound encapsulation: Styles which are defined outside a\n  shadowRoot should not cross the ShadowDOM boundary and should not apply\n  inside a shadowRoot.\n\n  This styling behavior is not emulated. Some possible ways to do this that \n  were rejected due to complexity and/or performance concerns include: (1) reset\n  every possible property for every possible selector for a given scope name;\n  (2) re-implement css in javascript.\n  \n  As an alternative, users should make sure to use selectors\n  specific to the scope in which they are working.\n  \n  * ::distributed: This behavior is not emulated. It's often not necessary\n  to style the contents of a specific insertion point and instead, descendants\n  of the host element can be styled selectively. Users can also create an \n  extra node around an insertion point and style that node's contents\n  via descendent selectors. For example, with a shadowRoot like this:\n  \n    <style>\n      ::content(div) {\n        background: red;\n      }\n    </style>\n    <content></content>\n  \n  could become:\n  \n    <style>\n      / *@polyfill .content-container div * / \n      ::content(div) {\n        background: red;\n      }\n    </style>\n    <div class=\"content-container\">\n      <content></content>\n    </div>\n  \n  Note the use of @polyfill in the comment above a ShadowDOM specific style\n  declaration. This is a directive to the styling shim to use the selector \n  in comments in lieu of the next selector when running under polyfill.\n*/\n(function(scope) {\n\nvar ShadowCSS = {\n  strictStyling: false,\n  registry: {},\n  // Shim styles for a given root associated with a name and extendsName\n  // 1. cache root styles by name\n  // 2. optionally tag root nodes with scope name\n  // 3. shim polyfill directives /* @polyfill */ and /* @polyfill-rule */\n  // 4. shim :host and scoping\n  shimStyling: function(root, name, extendsName) {\n    var scopeStyles = this.prepareRoot(root, name, extendsName);\n    var typeExtension = this.isTypeExtension(extendsName);\n    var scopeSelector = this.makeScopeSelector(name, typeExtension);\n    // use caching to make working with styles nodes easier and to facilitate\n    // lookup of extendee\n    var cssText = stylesToCssText(scopeStyles, true);\n    cssText = this.scopeCssText(cssText, scopeSelector);\n    // cache shimmed css on root for user extensibility\n    if (root) {\n      root.shimmedStyle = cssText;\n    }\n    // add style to document\n    this.addCssToDocument(cssText, name);\n  },\n  /*\n  * Shim a style element with the given selector. Returns cssText that can\n  * be included in the document via Platform.ShadowCSS.addCssToDocument(css).\n  */\n  shimStyle: function(style, selector) {\n    return this.shimCssText(style.textContent, selector);\n  },\n  /*\n  * Shim some cssText with the given selector. Returns cssText that can\n  * be included in the document via Platform.ShadowCSS.addCssToDocument(css).\n  */\n  shimCssText: function(cssText, selector) {\n    cssText = this.insertDirectives(cssText);\n    return this.scopeCssText(cssText, selector);\n  },\n  makeScopeSelector: function(name, typeExtension) {\n    if (name) {\n      return typeExtension ? '[is=' + name + ']' : name;\n    }\n    return '';\n  },\n  isTypeExtension: function(extendsName) {\n    return extendsName && extendsName.indexOf('-') < 0;\n  },\n  prepareRoot: function(root, name, extendsName) {\n    var def = this.registerRoot(root, name, extendsName);\n    this.replaceTextInStyles(def.rootStyles, this.insertDirectives);\n    // remove existing style elements\n    this.removeStyles(root, def.rootStyles);\n    // apply strict attr\n    if (this.strictStyling) {\n      this.applyScopeToContent(root, name);\n    }\n    return def.scopeStyles;\n  },\n  removeStyles: function(root, styles) {\n    for (var i=0, l=styles.length, s; (i<l) && (s=styles[i]); i++) {\n      s.parentNode.removeChild(s);\n    }\n  },\n  registerRoot: function(root, name, extendsName) {\n    var def = this.registry[name] = {\n      root: root,\n      name: name,\n      extendsName: extendsName\n    }\n    var styles = this.findStyles(root);\n    def.rootStyles = styles;\n    def.scopeStyles = def.rootStyles;\n    var extendee = this.registry[def.extendsName];\n    if (extendee) {\n      def.scopeStyles = extendee.scopeStyles.concat(def.scopeStyles);\n    }\n    return def;\n  },\n  findStyles: function(root) {\n    if (!root) {\n      return [];\n    }\n    var styles = root.querySelectorAll('style');\n    return Array.prototype.filter.call(styles, function(s) {\n      return !s.hasAttribute(NO_SHIM_ATTRIBUTE);\n    });\n  },\n  applyScopeToContent: function(root, name) {\n    if (root) {\n      // add the name attribute to each node in root.\n      Array.prototype.forEach.call(root.querySelectorAll('*'),\n          function(node) {\n            node.setAttribute(name, '');\n          });\n      // and template contents too\n      Array.prototype.forEach.call(root.querySelectorAll('template'),\n          function(template) {\n            this.applyScopeToContent(template.content, name);\n          },\n          this);\n    }\n  },\n  insertDirectives: function(cssText) {\n    cssText = this.insertPolyfillDirectivesInCssText(cssText);\n    return this.insertPolyfillRulesInCssText(cssText);\n  },\n  /*\n   * Process styles to convert native ShadowDOM rules that will trip\n   * up the css parser; we rely on decorating the stylesheet with inert rules.\n   * \n   * For example, we convert this rule:\n   * \n   * polyfill-next-selector { content: ':host menu-item'; }\n   * ::content menu-item {\n   * \n   * to this:\n   * \n   * scopeName menu-item {\n   *\n  **/\n  insertPolyfillDirectivesInCssText: function(cssText) {\n    // TODO(sorvell): remove either content or comment\n    cssText = cssText.replace(cssCommentNextSelectorRe, function(match, p1) {\n      // remove end comment delimiter and add block start\n      return p1.slice(0, -2) + '{';\n    });\n    return cssText.replace(cssContentNextSelectorRe, function(match, p1) {\n      return p1 + ' {';\n    });\n  },\n  /*\n   * Process styles to add rules which will only apply under the polyfill\n   * \n   * For example, we convert this rule:\n   * \n   * polyfill-rule {\n   *   content: ':host menu-item';\n   * ...\n   * }\n   * \n   * to this:\n   * \n   * scopeName menu-item {...}\n   *\n  **/\n  insertPolyfillRulesInCssText: function(cssText) {\n    // TODO(sorvell): remove either content or comment\n    cssText = cssText.replace(cssCommentRuleRe, function(match, p1) {\n      // remove end comment delimiter\n      return p1.slice(0, -1);\n    });\n    return cssText.replace(cssContentRuleRe, function(match, p1, p2, p3) {\n      var rule = match.replace(p1, '').replace(p2, '');\n      return p3 + rule;\n    });\n  },\n  /* Ensure styles are scoped. Pseudo-scoping takes a rule like:\n   * \n   *  .foo {... } \n   *  \n   *  and converts this to\n   *  \n   *  scopeName .foo { ... }\n  */\n  scopeCssText: function(cssText, scopeSelector) {\n    var unscoped = this.extractUnscopedRulesFromCssText(cssText);\n    cssText = this.insertPolyfillHostInCssText(cssText);\n    cssText = this.convertColonHost(cssText);\n    cssText = this.convertColonHostContext(cssText);\n    cssText = this.convertCombinators(cssText);\n    if (scopeSelector) {\n      var self = this, cssText;\n      withCssRules(cssText, function(rules) {\n        cssText = self.scopeRules(rules, scopeSelector);\n      });\n\n    }\n    cssText = cssText + '\\n' + unscoped;\n    return cssText.trim();\n  },\n  /*\n   * Process styles to add rules which will only apply under the polyfill\n   * and do not process via CSSOM. (CSSOM is destructive to rules on rare \n   * occasions, e.g. -webkit-calc on Safari.)\n   * For example, we convert this rule:\n   * \n   * (comment start) @polyfill-unscoped-rule menu-item { \n   * ... } (comment end)\n   * \n   * to this:\n   * \n   * menu-item {...}\n   *\n  **/\n  extractUnscopedRulesFromCssText: function(cssText) {\n    // TODO(sorvell): remove either content or comment\n    var r = '', m;\n    while (m = cssCommentUnscopedRuleRe.exec(cssText)) {\n      r += m[1].slice(0, -1) + '\\n\\n';\n    }\n    while (m = cssContentUnscopedRuleRe.exec(cssText)) {\n      r += m[0].replace(m[2], '').replace(m[1], m[3]) + '\\n\\n';\n    }\n    return r;\n  },\n  /*\n   * convert a rule like :host(.foo) > .bar { }\n   *\n   * to\n   *\n   * scopeName.foo > .bar\n  */\n  convertColonHost: function(cssText) {\n    return this.convertColonRule(cssText, cssColonHostRe,\n        this.colonHostPartReplacer);\n  },\n  /*\n   * convert a rule like :host-context(.foo) > .bar { }\n   *\n   * to\n   *\n   * scopeName.foo > .bar, .foo scopeName > .bar { }\n   * \n   * and\n   *\n   * :host-context(.foo:host) .bar { ... }\n   * \n   * to\n   * \n   * scopeName.foo .bar { ... }\n  */\n  convertColonHostContext: function(cssText) {\n    return this.convertColonRule(cssText, cssColonHostContextRe,\n        this.colonHostContextPartReplacer);\n  },\n  convertColonRule: function(cssText, regExp, partReplacer) {\n    // p1 = :host, p2 = contents of (), p3 rest of rule\n    return cssText.replace(regExp, function(m, p1, p2, p3) {\n      p1 = polyfillHostNoCombinator;\n      if (p2) {\n        var parts = p2.split(','), r = [];\n        for (var i=0, l=parts.length, p; (i<l) && (p=parts[i]); i++) {\n          p = p.trim();\n          r.push(partReplacer(p1, p, p3));\n        }\n        return r.join(',');\n      } else {\n        return p1 + p3;\n      }\n    });\n  },\n  colonHostContextPartReplacer: function(host, part, suffix) {\n    if (part.match(polyfillHost)) {\n      return this.colonHostPartReplacer(host, part, suffix);\n    } else {\n      return host + part + suffix + ', ' + part + ' ' + host + suffix;\n    }\n  },\n  colonHostPartReplacer: function(host, part, suffix) {\n    return host + part.replace(polyfillHost, '') + suffix;\n  },\n  /*\n   * Convert ^ and ^^ combinators by replacing with space.\n  */\n  convertCombinators: function(cssText) {\n    for (var i=0; i < combinatorsRe.length; i++) {\n      cssText = cssText.replace(combinatorsRe[i], ' ');\n    }\n    return cssText;\n  },\n  // change a selector like 'div' to 'name div'\n  scopeRules: function(cssRules, scopeSelector) {\n    var cssText = '';\n    if (cssRules) {\n      Array.prototype.forEach.call(cssRules, function(rule) {\n        if (rule.selectorText && (rule.style && rule.style.cssText)) {\n          cssText += this.scopeSelector(rule.selectorText, scopeSelector, \n            this.strictStyling) + ' {\\n\\t';\n          cssText += this.propertiesFromRule(rule) + '\\n}\\n\\n';\n        } else if (rule.type === CSSRule.MEDIA_RULE) {\n          cssText += '@media ' + rule.media.mediaText + ' {\\n';\n          cssText += this.scopeRules(rule.cssRules, scopeSelector);\n          cssText += '\\n}\\n\\n';\n        } else if (rule.cssText) {\n          cssText += rule.cssText + '\\n\\n';\n        }\n      }, this);\n    }\n    return cssText;\n  },\n  scopeSelector: function(selector, scopeSelector, strict) {\n    var r = [], parts = selector.split(',');\n    parts.forEach(function(p) {\n      p = p.trim();\n      if (this.selectorNeedsScoping(p, scopeSelector)) {\n        p = (strict && !p.match(polyfillHostNoCombinator)) ? \n            this.applyStrictSelectorScope(p, scopeSelector) :\n            this.applySelectorScope(p, scopeSelector);\n      }\n      r.push(p);\n    }, this);\n    return r.join(', ');\n  },\n  selectorNeedsScoping: function(selector, scopeSelector) {\n    if (Array.isArray(scopeSelector)) {\n      return true;\n    }\n    var re = this.makeScopeMatcher(scopeSelector);\n    return !selector.match(re);\n  },\n  makeScopeMatcher: function(scopeSelector) {\n    scopeSelector = scopeSelector.replace(/\\[/g, '\\\\[').replace(/\\[/g, '\\\\]');\n    return new RegExp('^(' + scopeSelector + ')' + selectorReSuffix, 'm');\n  },\n  applySelectorScope: function(selector, selectorScope) {\n    return Array.isArray(selectorScope) ?\n        this.applySelectorScopeList(selector, selectorScope) :\n        this.applySimpleSelectorScope(selector, selectorScope);\n  },\n  // apply an array of selectors\n  applySelectorScopeList: function(selector, scopeSelectorList) {\n    var r = [];\n    for (var i=0, s; (s=scopeSelectorList[i]); i++) {\n      r.push(this.applySimpleSelectorScope(selector, s));\n    }\n    return r.join(', ');\n  },\n  // scope via name and [is=name]\n  applySimpleSelectorScope: function(selector, scopeSelector) {\n    if (selector.match(polyfillHostRe)) {\n      selector = selector.replace(polyfillHostNoCombinator, scopeSelector);\n      return selector.replace(polyfillHostRe, scopeSelector + ' ');\n    } else {\n      return scopeSelector + ' ' + selector;\n    }\n  },\n  // return a selector with [name] suffix on each simple selector\n  // e.g. .foo.bar > .zot becomes .foo[name].bar[name] > .zot[name]\n  applyStrictSelectorScope: function(selector, scopeSelector) {\n    scopeSelector = scopeSelector.replace(/\\[is=([^\\]]*)\\]/g, '$1');\n    var splits = [' ', '>', '+', '~'],\n      scoped = selector,\n      attrName = '[' + scopeSelector + ']';\n    splits.forEach(function(sep) {\n      var parts = scoped.split(sep);\n      scoped = parts.map(function(p) {\n        // remove :host since it should be unnecessary\n        var t = p.trim().replace(polyfillHostRe, '');\n        if (t && (splits.indexOf(t) < 0) && (t.indexOf(attrName) < 0)) {\n          p = t.replace(/([^:]*)(:*)(.*)/, '$1' + attrName + '$2$3')\n        }\n        return p;\n      }).join(sep);\n    });\n    return scoped;\n  },\n  insertPolyfillHostInCssText: function(selector) {\n    return selector.replace(colonHostContextRe, polyfillHostContext).replace(\n        colonHostRe, polyfillHost);\n  },\n  propertiesFromRule: function(rule) {\n    var cssText = rule.style.cssText;\n    // TODO(sorvell): Safari cssom incorrectly removes quotes from the content\n    // property. (https://bugs.webkit.org/show_bug.cgi?id=118045)\n    // don't replace attr rules\n    if (rule.style.content && !rule.style.content.match(/['\"]+|attr/)) {\n      cssText = cssText.replace(/content:[^;]*;/g, 'content: \\'' + \n          rule.style.content + '\\';');\n    }\n    // TODO(sorvell): we can workaround this issue here, but we need a list\n    // of troublesome properties to fix https://github.com/Polymer/platform/issues/53\n    //\n    // inherit rules can be omitted from cssText\n    // TODO(sorvell): remove when Blink bug is fixed:\n    // https://code.google.com/p/chromium/issues/detail?id=358273\n    var style = rule.style;\n    for (var i in style) {\n      if (style[i] === 'initial') {\n        cssText += i + ': initial; ';\n      }\n    }\n    return cssText;\n  },\n  replaceTextInStyles: function(styles, action) {\n    if (styles && action) {\n      if (!(styles instanceof Array)) {\n        styles = [styles];\n      }\n      Array.prototype.forEach.call(styles, function(s) {\n        s.textContent = action.call(this, s.textContent);\n      }, this);\n    }\n  },\n  addCssToDocument: function(cssText, name) {\n    if (cssText.match('@import')) {\n      addOwnSheet(cssText, name);\n    } else {\n      addCssToDocument(cssText);\n    }\n  }\n};\n\nvar selectorRe = /([^{]*)({[\\s\\S]*?})/gim,\n    cssCommentRe = /\\/\\*[^*]*\\*+([^/*][^*]*\\*+)*\\//gim,\n    // TODO(sorvell): remove either content or comment\n    cssCommentNextSelectorRe = /\\/\\*\\s*@polyfill ([^*]*\\*+([^/*][^*]*\\*+)*\\/)([^{]*?){/gim,\n    cssContentNextSelectorRe = /polyfill-next-selector[^}]*content\\:[\\s]*'([^']*)'[^}]*}([^{]*?){/gim,\n    // TODO(sorvell): remove either content or comment\n    cssCommentRuleRe = /\\/\\*\\s@polyfill-rule([^*]*\\*+([^/*][^*]*\\*+)*)\\//gim,\n    cssContentRuleRe = /(polyfill-rule)[^}]*(content\\:[\\s]*'([^']*)'[^;]*;)[^}]*}/gim,\n    // TODO(sorvell): remove either content or comment\n    cssCommentUnscopedRuleRe = /\\/\\*\\s@polyfill-unscoped-rule([^*]*\\*+([^/*][^*]*\\*+)*)\\//gim,\n    cssContentUnscopedRuleRe = /(polyfill-unscoped-rule)[^}]*(content\\:[\\s]*'([^']*)'[^;]*;)[^}]*}/gim,\n    cssPseudoRe = /::(x-[^\\s{,(]*)/gim,\n    cssPartRe = /::part\\(([^)]*)\\)/gim,\n    // note: :host pre-processed to -shadowcsshost.\n    polyfillHost = '-shadowcsshost',\n    // note: :host-context pre-processed to -shadowcsshostcontext.\n    polyfillHostContext = '-shadowcsscontext',\n    parenSuffix = ')(?:\\\\((' +\n        '(?:\\\\([^)(]*\\\\)|[^)(]*)+?' +\n        ')\\\\))?([^,{]*)';\n    cssColonHostRe = new RegExp('(' + polyfillHost + parenSuffix, 'gim'),\n    cssColonHostContextRe = new RegExp('(' + polyfillHostContext + parenSuffix, 'gim'),\n    selectorReSuffix = '([>\\\\s~+\\[.,{:][\\\\s\\\\S]*)?$',\n    colonHostRe = /\\:host/gim,\n    colonHostContextRe = /\\:host-context/gim,\n    /* host name without combinator */\n    polyfillHostNoCombinator = polyfillHost + '-no-combinator',\n    polyfillHostRe = new RegExp(polyfillHost, 'gim'),\n    polyfillHostContextRe = new RegExp(polyfillHostContext, 'gim'),\n    combinatorsRe = [\n      /\\^\\^/g,\n      /\\^/g,\n      /\\/shadow\\//g,\n      /\\/shadow-deep\\//g,\n      /::shadow/g,\n      /\\/deep\\//g\n    ];\n\nfunction stylesToCssText(styles, preserveComments) {\n  var cssText = '';\n  Array.prototype.forEach.call(styles, function(s) {\n    cssText += s.textContent + '\\n\\n';\n  });\n  // strip comments for easier processing\n  if (!preserveComments) {\n    cssText = cssText.replace(cssCommentRe, '');\n  }\n  return cssText;\n}\n\nfunction cssTextToStyle(cssText) {\n  var style = document.createElement('style');\n  style.textContent = cssText;\n  return style;\n}\n\nfunction cssToRules(cssText) {\n  var style = cssTextToStyle(cssText);\n  document.head.appendChild(style);\n  var rules = [];\n  if (style.sheet) {\n    // TODO(sorvell): Firefox throws when accessing the rules of a stylesheet\n    // with an @import\n    // https://bugzilla.mozilla.org/show_bug.cgi?id=625013\n    try {\n      rules = style.sheet.cssRules;\n    } catch(e) {\n      //\n    }\n  } else {\n    console.warn('sheet not found', style);\n  }\n  style.parentNode.removeChild(style);\n  return rules;\n}\n\nvar frame = document.createElement('iframe');\nframe.style.display = 'none';\n\nfunction initFrame() {\n  frame.initialized = true;\n  document.body.appendChild(frame);\n  var doc = frame.contentDocument;\n  var base = doc.createElement('base');\n  base.href = document.baseURI;\n  doc.head.appendChild(base);\n}\n\nfunction inFrame(fn) {\n  if (!frame.initialized) {\n    initFrame();\n  }\n  document.body.appendChild(frame);\n  fn(frame.contentDocument);\n  document.body.removeChild(frame);\n}\n\n// TODO(sorvell): use an iframe if the cssText contains an @import to workaround\n// https://code.google.com/p/chromium/issues/detail?id=345114\nvar isChrome = navigator.userAgent.match('Chrome');\nfunction withCssRules(cssText, callback) {\n  if (!callback) {\n    return;\n  }\n  var rules;\n  if (cssText.match('@import') && isChrome) {\n    var style = cssTextToStyle(cssText);\n    inFrame(function(doc) {\n      doc.head.appendChild(style.impl);\n      rules = style.sheet.cssRules;\n      callback(rules);\n    });\n  } else {\n    rules = cssToRules(cssText);\n    callback(rules);\n  }\n}\n\nfunction rulesToCss(cssRules) {\n  for (var i=0, css=[]; i < cssRules.length; i++) {\n    css.push(cssRules[i].cssText);\n  }\n  return css.join('\\n\\n');\n}\n\nfunction addCssToDocument(cssText) {\n  if (cssText) {\n    getSheet().appendChild(document.createTextNode(cssText));\n  }\n}\n\nfunction addOwnSheet(cssText, name) {\n  var style = cssTextToStyle(cssText);\n  style.setAttribute(name, '');\n  style.setAttribute(SHIMMED_ATTRIBUTE, '');\n  document.head.appendChild(style);\n}\n\nvar SHIM_ATTRIBUTE = 'shim-shadowdom';\nvar SHIMMED_ATTRIBUTE = 'shim-shadowdom-css';\nvar NO_SHIM_ATTRIBUTE = 'no-shim';\n\nvar sheet;\nfunction getSheet() {\n  if (!sheet) {\n    sheet = document.createElement(\"style\");\n    sheet.setAttribute(SHIMMED_ATTRIBUTE, '');\n    sheet[SHIMMED_ATTRIBUTE] = true;\n  }\n  return sheet;\n}\n\n// add polyfill stylesheet to document\nif (window.ShadowDOMPolyfill) {\n  addCssToDocument('style { display: none !important; }\\n');\n  var doc = wrap(document);\n  var head = doc.querySelector('head');\n  head.insertBefore(getSheet(), head.childNodes[0]);\n\n  // TODO(sorvell): monkey-patching HTMLImports is abusive;\n  // consider a better solution.\n  document.addEventListener('DOMContentLoaded', function() {\n    var urlResolver = scope.urlResolver;\n    \n    if (window.HTMLImports && !HTMLImports.useNative) {\n      var SHIM_SHEET_SELECTOR = 'link[rel=stylesheet]' +\n          '[' + SHIM_ATTRIBUTE + ']';\n      var SHIM_STYLE_SELECTOR = 'style[' + SHIM_ATTRIBUTE + ']';\n      HTMLImports.importer.documentPreloadSelectors += ',' + SHIM_SHEET_SELECTOR;\n      HTMLImports.importer.importsPreloadSelectors += ',' + SHIM_SHEET_SELECTOR;\n\n      HTMLImports.parser.documentSelectors = [\n        HTMLImports.parser.documentSelectors,\n        SHIM_SHEET_SELECTOR,\n        SHIM_STYLE_SELECTOR\n      ].join(',');\n  \n      var originalParseGeneric = HTMLImports.parser.parseGeneric;\n\n      HTMLImports.parser.parseGeneric = function(elt) {\n        if (elt[SHIMMED_ATTRIBUTE]) {\n          return;\n        }\n        var style = elt.__importElement || elt;\n        if (!style.hasAttribute(SHIM_ATTRIBUTE)) {\n          originalParseGeneric.call(this, elt);\n          return;\n        }\n        if (elt.__resource) {\n          style = elt.ownerDocument.createElement('style');\n          style.textContent = urlResolver.resolveCssText(\n              elt.__resource, elt.href);\n        } else {\n          urlResolver.resolveStyle(style);  \n        }\n        style.textContent = ShadowCSS.shimStyle(style);\n        style.removeAttribute(SHIM_ATTRIBUTE, '');\n        style.setAttribute(SHIMMED_ATTRIBUTE, '');\n        style[SHIMMED_ATTRIBUTE] = true;\n        // place in document\n        if (style.parentNode !== head) {\n          // replace links in head\n          if (elt.parentNode === head) {\n            head.replaceChild(style, elt);\n          } else {\n            head.appendChild(style);\n          }\n        }\n        style.__importParsed = true;\n        this.markParsingComplete(elt);\n      }\n\n      var hasResource = HTMLImports.parser.hasResource;\n      HTMLImports.parser.hasResource = function(node) {\n        if (node.localName === 'link' && node.rel === 'stylesheet' &&\n            node.hasAttribute(SHIM_ATTRIBUTE)) {\n          return (node.__resource);\n        } else {\n          return hasResource.call(this, node);\n        }\n      }\n\n    }\n  });\n}\n\n// exports\nscope.ShadowCSS = ShadowCSS;\n\n})(window.Platform);","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function() {\n\n  // poor man's adapter for template.content on various platform scenarios\n  window.templateContent = window.templateContent || function(inTemplate) {\n    return inTemplate.content;\n  };\n\n  // so we can call wrap/unwrap without testing for ShadowDOMPolyfill\n\n  window.wrap = window.unwrap = function(n){\n    return n;\n  }\n  \n  addEventListener('DOMContentLoaded', function() {\n    if (CustomElements.useNative === false) {\n      var originalCreateShadowRoot = Element.prototype.createShadowRoot;\n      Element.prototype.createShadowRoot = function() {\n        var root = originalCreateShadowRoot.call(this);\n        CustomElements.watchShadow(this);\n        return root;\n      };\n    }\n  });\n  \n  window.templateContent = function(inTemplate) {\n    // if MDV exists, it may need to boostrap this template to reveal content\n    if (window.HTMLTemplateElement && HTMLTemplateElement.bootstrap) {\n      HTMLTemplateElement.bootstrap(inTemplate);\n    }\n    // fallback when there is no Shadow DOM polyfill, no MDV polyfill, and no\n    // native template support\n    if (!inTemplate.content && !inTemplate._content) {\n      var frag = document.createDocumentFragment();\n      while (inTemplate.firstChild) {\n        frag.appendChild(inTemplate.firstChild);\n      }\n      inTemplate._content = frag;\n    }\n    return inTemplate.content || inTemplate._content;\n  };\n\n})();","/* Any copyright is dedicated to the Public Domain.\n * http://creativecommons.org/publicdomain/zero/1.0/ */\n\n(function(scope) {\n  'use strict';\n\n  // feature detect for URL constructor\n  var hasWorkingUrl = false;\n  if (!scope.forceJURL) {\n    try {\n      var u = new URL('b', 'http://a');\n      hasWorkingUrl = u.href === 'http://a/b';\n    } catch(e) {}\n  }\n\n  if (hasWorkingUrl)\n    return;\n\n  var relative = Object.create(null);\n  relative['ftp'] = 21;\n  relative['file'] = 0;\n  relative['gopher'] = 70;\n  relative['http'] = 80;\n  relative['https'] = 443;\n  relative['ws'] = 80;\n  relative['wss'] = 443;\n\n  var relativePathDotMapping = Object.create(null);\n  relativePathDotMapping['%2e'] = '.';\n  relativePathDotMapping['.%2e'] = '..';\n  relativePathDotMapping['%2e.'] = '..';\n  relativePathDotMapping['%2e%2e'] = '..';\n\n  function isRelativeScheme(scheme) {\n    return relative[scheme] !== undefined;\n  }\n\n  function invalid() {\n    clear.call(this);\n    this._isInvalid = true;\n  }\n\n  function IDNAToASCII(h) {\n    if ('' == h) {\n      invalid.call(this)\n    }\n    // XXX\n    return h.toLowerCase()\n  }\n\n  function percentEscape(c) {\n    var unicode = c.charCodeAt(0);\n    if (unicode > 0x20 &&\n       unicode < 0x7F &&\n       // \" # < > ? `\n       [0x22, 0x23, 0x3C, 0x3E, 0x3F, 0x60].indexOf(unicode) == -1\n      ) {\n      return c;\n    }\n    return encodeURIComponent(c);\n  }\n\n  function percentEscapeQuery(c) {\n    // XXX This actually needs to encode c using encoding and then\n    // convert the bytes one-by-one.\n\n    var unicode = c.charCodeAt(0);\n    if (unicode > 0x20 &&\n       unicode < 0x7F &&\n       // \" # < > ` (do not escape '?')\n       [0x22, 0x23, 0x3C, 0x3E, 0x60].indexOf(unicode) == -1\n      ) {\n      return c;\n    }\n    return encodeURIComponent(c);\n  }\n\n  var EOF = undefined,\n      ALPHA = /[a-zA-Z]/,\n      ALPHANUMERIC = /[a-zA-Z0-9\\+\\-\\.]/;\n\n  function parse(input, stateOverride, base) {\n    function err(message) {\n      errors.push(message)\n    }\n\n    var state = stateOverride || 'scheme start',\n        cursor = 0,\n        buffer = '',\n        seenAt = false,\n        seenBracket = false,\n        errors = [];\n\n    loop: while ((input[cursor - 1] != EOF || cursor == 0) && !this._isInvalid) {\n      var c = input[cursor];\n      switch (state) {\n        case 'scheme start':\n          if (c && ALPHA.test(c)) {\n            buffer += c.toLowerCase(); // ASCII-safe\n            state = 'scheme';\n          } else if (!stateOverride) {\n            buffer = '';\n            state = 'no scheme';\n            continue;\n          } else {\n            err('Invalid scheme.');\n            break loop;\n          }\n          break;\n\n        case 'scheme':\n          if (c && ALPHANUMERIC.test(c)) {\n            buffer += c.toLowerCase(); // ASCII-safe\n          } else if (':' == c) {\n            this._scheme = buffer;\n            buffer = '';\n            if (stateOverride) {\n              break loop;\n            }\n            if (isRelativeScheme(this._scheme)) {\n              this._isRelative = true;\n            }\n            if ('file' == this._scheme) {\n              state = 'relative';\n            } else if (this._isRelative && base && base._scheme == this._scheme) {\n              state = 'relative or authority';\n            } else if (this._isRelative) {\n              state = 'authority first slash';\n            } else {\n              state = 'scheme data';\n            }\n          } else if (!stateOverride) {\n            buffer = '';\n            cursor = 0;\n            state = 'no scheme';\n            continue;\n          } else if (EOF == c) {\n            break loop;\n          } else {\n            err('Code point not allowed in scheme: ' + c)\n            break loop;\n          }\n          break;\n\n        case 'scheme data':\n          if ('?' == c) {\n            query = '?';\n            state = 'query';\n          } else if ('#' == c) {\n            this._fragment = '#';\n            state = 'fragment';\n          } else {\n            // XXX error handling\n            if (EOF != c && '\\t' != c && '\\n' != c && '\\r' != c) {\n              this._schemeData += percentEscape(c);\n            }\n          }\n          break;\n\n        case 'no scheme':\n          if (!base || !(isRelativeScheme(base._scheme))) {\n            err('Missing scheme.');\n            invalid.call(this);\n          } else {\n            state = 'relative';\n            continue;\n          }\n          break;\n\n        case 'relative or authority':\n          if ('/' == c && '/' == input[cursor+1]) {\n            state = 'authority ignore slashes';\n          } else {\n            err('Expected /, got: ' + c);\n            state = 'relative';\n            continue\n          }\n          break;\n\n        case 'relative':\n          this._isRelative = true;\n          if ('file' != this._scheme)\n            this._scheme = base._scheme;\n          if (EOF == c) {\n            this._host = base._host;\n            this._port = base._port;\n            this._path = base._path.slice();\n            this._query = base._query;\n            break loop;\n          } else if ('/' == c || '\\\\' == c) {\n            if ('\\\\' == c)\n              err('\\\\ is an invalid code point.');\n            state = 'relative slash';\n          } else if ('?' == c) {\n            this._host = base._host;\n            this._port = base._port;\n            this._path = base._path.slice();\n            this._query = '?';\n            state = 'query';\n          } else if ('#' == c) {\n            this._host = base._host;\n            this._port = base._port;\n            this._path = base._path.slice();\n            this._query = base._query;\n            this._fragment = '#';\n            state = 'fragment';\n          } else {\n            var nextC = input[cursor+1]\n            var nextNextC = input[cursor+2]\n            if (\n              'file' != this._scheme || !ALPHA.test(c) ||\n              (nextC != ':' && nextC != '|') ||\n              (EOF != nextNextC && '/' != nextNextC && '\\\\' != nextNextC && '?' != nextNextC && '#' != nextNextC)) {\n              this._host = base._host;\n              this._port = base._port;\n              this._path = base._path.slice();\n              this._path.pop();\n            }\n            state = 'relative path';\n            continue;\n          }\n          break;\n\n        case 'relative slash':\n          if ('/' == c || '\\\\' == c) {\n            if ('\\\\' == c) {\n              err('\\\\ is an invalid code point.');\n            }\n            if ('file' == this._scheme) {\n              state = 'file host';\n            } else {\n              state = 'authority ignore slashes';\n            }\n          } else {\n            if ('file' != this._scheme) {\n              this._host = base._host;\n              this._port = base._port;\n            }\n            state = 'relative path';\n            continue;\n          }\n          break;\n\n        case 'authority first slash':\n          if ('/' == c) {\n            state = 'authority second slash';\n          } else {\n            err(\"Expected '/', got: \" + c);\n            state = 'authority ignore slashes';\n            continue;\n          }\n          break;\n\n        case 'authority second slash':\n          state = 'authority ignore slashes';\n          if ('/' != c) {\n            err(\"Expected '/', got: \" + c);\n            continue;\n          }\n          break;\n\n        case 'authority ignore slashes':\n          if ('/' != c && '\\\\' != c) {\n            state = 'authority';\n            continue;\n          } else {\n            err('Expected authority, got: ' + c);\n          }\n          break;\n\n        case 'authority':\n          if ('@' == c) {\n            if (seenAt) {\n              err('@ already seen.');\n              buffer += '%40';\n            }\n            seenAt = true;\n            for (var i = 0; i < buffer.length; i++) {\n              var cp = buffer[i];\n              if ('\\t' == cp || '\\n' == cp || '\\r' == cp) {\n                err('Invalid whitespace in authority.');\n                continue;\n              }\n              // XXX check URL code points\n              if (':' == cp && null === this._password) {\n                this._password = '';\n                continue;\n              }\n              var tempC = percentEscape(cp);\n              (null !== this._password) ? this._password += tempC : this._username += tempC;\n            }\n            buffer = '';\n          } else if (EOF == c || '/' == c || '\\\\' == c || '?' == c || '#' == c) {\n            cursor -= buffer.length;\n            buffer = '';\n            state = 'host';\n            continue;\n          } else {\n            buffer += c;\n          }\n          break;\n\n        case 'file host':\n          if (EOF == c || '/' == c || '\\\\' == c || '?' == c || '#' == c) {\n            if (buffer.length == 2 && ALPHA.test(buffer[0]) && (buffer[1] == ':' || buffer[1] == '|')) {\n              state = 'relative path';\n            } else if (buffer.length == 0) {\n              state = 'relative path start';\n            } else {\n              this._host = IDNAToASCII.call(this, buffer);\n              buffer = '';\n              state = 'relative path start';\n            }\n            continue;\n          } else if ('\\t' == c || '\\n' == c || '\\r' == c) {\n            err('Invalid whitespace in file host.');\n          } else {\n            buffer += c;\n          }\n          break;\n\n        case 'host':\n        case 'hostname':\n          if (':' == c && !seenBracket) {\n            // XXX host parsing\n            this._host = IDNAToASCII.call(this, buffer);\n            buffer = '';\n            state = 'port';\n            if ('hostname' == stateOverride) {\n              break loop;\n            }\n          } else if (EOF == c || '/' == c || '\\\\' == c || '?' == c || '#' == c) {\n            this._host = IDNAToASCII.call(this, buffer);\n            buffer = '';\n            state = 'relative path start';\n            if (stateOverride) {\n              break loop;\n            }\n            continue;\n          } else if ('\\t' != c && '\\n' != c && '\\r' != c) {\n            if ('[' == c) {\n              seenBracket = true;\n            } else if (']' == c) {\n              seenBracket = false;\n            }\n            buffer += c;\n          } else {\n            err('Invalid code point in host/hostname: ' + c);\n          }\n          break;\n\n        case 'port':\n          if (/[0-9]/.test(c)) {\n            buffer += c;\n          } else if (EOF == c || '/' == c || '\\\\' == c || '?' == c || '#' == c || stateOverride) {\n            if ('' != buffer) {\n              var temp = parseInt(buffer, 10);\n              if (temp != relative[this._scheme]) {\n                this._port = temp + '';\n              }\n              buffer = '';\n            }\n            if (stateOverride) {\n              break loop;\n            }\n            state = 'relative path start';\n            continue;\n          } else if ('\\t' == c || '\\n' == c || '\\r' == c) {\n            err('Invalid code point in port: ' + c);\n          } else {\n            invalid.call(this);\n          }\n          break;\n\n        case 'relative path start':\n          if ('\\\\' == c)\n            err(\"'\\\\' not allowed in path.\");\n          state = 'relative path';\n          if ('/' != c && '\\\\' != c) {\n            continue;\n          }\n          break;\n\n        case 'relative path':\n          if (EOF == c || '/' == c || '\\\\' == c || (!stateOverride && ('?' == c || '#' == c))) {\n            if ('\\\\' == c) {\n              err('\\\\ not allowed in relative path.');\n            }\n            var tmp;\n            if (tmp = relativePathDotMapping[buffer.toLowerCase()]) {\n              buffer = tmp;\n            }\n            if ('..' == buffer) {\n              this._path.pop();\n              if ('/' != c && '\\\\' != c) {\n                this._path.push('');\n              }\n            } else if ('.' == buffer && '/' != c && '\\\\' != c) {\n              this._path.push('');\n            } else if ('.' != buffer) {\n              if ('file' == this._scheme && this._path.length == 0 && buffer.length == 2 && ALPHA.test(buffer[0]) && buffer[1] == '|') {\n                buffer = buffer[0] + ':';\n              }\n              this._path.push(buffer);\n            }\n            buffer = '';\n            if ('?' == c) {\n              this._query = '?';\n              state = 'query';\n            } else if ('#' == c) {\n              this._fragment = '#';\n              state = 'fragment';\n            }\n          } else if ('\\t' != c && '\\n' != c && '\\r' != c) {\n            buffer += percentEscape(c);\n          }\n          break;\n\n        case 'query':\n          if (!stateOverride && '#' == c) {\n            this._fragment = '#';\n            state = 'fragment';\n          } else if (EOF != c && '\\t' != c && '\\n' != c && '\\r' != c) {\n            this._query += percentEscapeQuery(c);\n          }\n          break;\n\n        case 'fragment':\n          if (EOF != c && '\\t' != c && '\\n' != c && '\\r' != c) {\n            this._fragment += c;\n          }\n          break;\n      }\n\n      cursor++;\n    }\n  }\n\n  function clear() {\n    this._scheme = '';\n    this._schemeData = '';\n    this._username = '';\n    this._password = null;\n    this._host = '';\n    this._port = '';\n    this._path = [];\n    this._query = '';\n    this._fragment = '';\n    this._isInvalid = false;\n    this._isRelative = false;\n  }\n\n  // Does not process domain names or IP addresses.\n  // Does not handle encoding for the query parameter.\n  function jURL(url, base /* , encoding */) {\n    if (base !== undefined && !(base instanceof jURL))\n      base = new jURL(String(base));\n\n    this._url = url;\n    clear.call(this);\n\n    var input = url.replace(/^[ \\t\\r\\n\\f]+|[ \\t\\r\\n\\f]+$/g, '');\n    // encoding = encoding || 'utf-8'\n\n    parse.call(this, input, null, base);\n  }\n\n  jURL.prototype = {\n    get href() {\n      if (this._isInvalid)\n        return this._url;\n\n      var authority = '';\n      if ('' != this._username || null != this._password) {\n        authority = this._username +\n            (null != this._password ? ':' + this._password : '') + '@';\n      }\n\n      return this.protocol +\n          (this._isRelative ? '//' + authority + this.host : '') +\n          this.pathname + this._query + this._fragment;\n    },\n    set href(href) {\n      clear.call(this);\n      parse.call(this, href);\n    },\n\n    get protocol() {\n      return this._scheme + ':';\n    },\n    set protocol(protocol) {\n      if (this._isInvalid)\n        return;\n      parse.call(this, protocol + ':', 'scheme start');\n    },\n\n    get host() {\n      return this._isInvalid ? '' : this._port ?\n          this._host + ':' + this._port : this._host;\n    },\n    set host(host) {\n      if (this._isInvalid || !this._isRelative)\n        return;\n      parse.call(this, host, 'host');\n    },\n\n    get hostname() {\n      return this._host;\n    },\n    set hostname(hostname) {\n      if (this._isInvalid || !this._isRelative)\n        return;\n      parse.call(this, hostname, 'hostname');\n    },\n\n    get port() {\n      return this._port;\n    },\n    set port(port) {\n      if (this._isInvalid || !this._isRelative)\n        return;\n      parse.call(this, port, 'port');\n    },\n\n    get pathname() {\n      return this._isInvalid ? '' : this._isRelative ?\n          '/' + this._path.join('/') : this._schemeData;\n    },\n    set pathname(pathname) {\n      if (this._isInvalid || !this._isRelative)\n        return;\n      this._path = [];\n      parse.call(this, pathname, 'relative path start');\n    },\n\n    get search() {\n      return this._isInvalid || !this._query || '?' == this._query ?\n          '' : this._query;\n    },\n    set search(search) {\n      if (this._isInvalid || !this._isRelative)\n        return;\n      this._query = '?';\n      if ('?' == search[0])\n        search = search.slice(1);\n      parse.call(this, search, 'query');\n    },\n\n    get hash() {\n      return this._isInvalid || !this._fragment || '#' == this._fragment ?\n          '' : this._fragment;\n    },\n    set hash(hash) {\n      if (this._isInvalid)\n        return;\n      this._fragment = '#';\n      if ('#' == hash[0])\n        hash = hash.slice(1);\n      parse.call(this, hash, 'fragment');\n    }\n  };\n\n  scope.URL = jURL;\n\n})(window);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(scope) {\n\n// Old versions of iOS do not have bind.\n\nif (!Function.prototype.bind) {\n  Function.prototype.bind = function(scope) {\n    var self = this;\n    var args = Array.prototype.slice.call(arguments, 1);\n    return function() {\n      var args2 = args.slice();\n      args2.push.apply(args2, arguments);\n      return self.apply(scope, args2);\n    };\n  };\n}\n\n// mixin\n\n// copy all properties from inProps (et al) to inObj\nfunction mixin(inObj/*, inProps, inMoreProps, ...*/) {\n  var obj = inObj || {};\n  for (var i = 1; i < arguments.length; i++) {\n    var p = arguments[i];\n    try {\n      for (var n in p) {\n        copyProperty(n, p, obj);\n      }\n    } catch(x) {\n    }\n  }\n  return obj;\n}\n\n// copy property inName from inSource object to inTarget object\nfunction copyProperty(inName, inSource, inTarget) {\n  var pd = getPropertyDescriptor(inSource, inName);\n  Object.defineProperty(inTarget, inName, pd);\n}\n\n// get property descriptor for inName on inObject, even if\n// inName exists on some link in inObject's prototype chain\nfunction getPropertyDescriptor(inObject, inName) {\n  if (inObject) {\n    var pd = Object.getOwnPropertyDescriptor(inObject, inName);\n    return pd || getPropertyDescriptor(Object.getPrototypeOf(inObject), inName);\n  }\n}\n\n// export\n\nscope.mixin = mixin;\n\n})(window.Platform);","// Copyright 2011 Google Inc.\n//\n// Licensed under the Apache License, Version 2.0 (the \"License\");\n// you may not use this file except in compliance with the License.\n// You may obtain a copy of the License at\n//\n//     http://www.apache.org/licenses/LICENSE-2.0\n//\n// Unless required by applicable law or agreed to in writing, software\n// distributed under the License is distributed on an \"AS IS\" BASIS,\n// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n// See the License for the specific language governing permissions and\n// limitations under the License.\n\n(function(scope) {\n\n  'use strict';\n\n  // polyfill DOMTokenList\n  // * add/remove: allow these methods to take multiple classNames\n  // * toggle: add a 2nd argument which forces the given state rather\n  //  than toggling.\n\n  var add = DOMTokenList.prototype.add;\n  var remove = DOMTokenList.prototype.remove;\n  DOMTokenList.prototype.add = function() {\n    for (var i = 0; i < arguments.length; i++) {\n      add.call(this, arguments[i]);\n    }\n  };\n  DOMTokenList.prototype.remove = function() {\n    for (var i = 0; i < arguments.length; i++) {\n      remove.call(this, arguments[i]);\n    }\n  };\n  DOMTokenList.prototype.toggle = function(name, bool) {\n    if (arguments.length == 1) {\n      bool = !this.contains(name);\n    }\n    bool ? this.add(name) : this.remove(name);\n  };\n  DOMTokenList.prototype.switch = function(oldName, newName) {\n    oldName && this.remove(oldName);\n    newName && this.add(newName);\n  };\n\n  // add array() to NodeList, NamedNodeMap, HTMLCollection\n\n  var ArraySlice = function() {\n    return Array.prototype.slice.call(this);\n  };\n\n  var namedNodeMap = (window.NamedNodeMap || window.MozNamedAttrMap || {});\n\n  NodeList.prototype.array = ArraySlice;\n  namedNodeMap.prototype.array = ArraySlice;\n  HTMLCollection.prototype.array = ArraySlice;\n\n  // polyfill performance.now\n\n  if (!window.performance) {\n    var start = Date.now();\n    // only at millisecond precision\n    window.performance = {now: function(){ return Date.now() - start }};\n  }\n\n  // polyfill for requestAnimationFrame\n\n  if (!window.requestAnimationFrame) {\n    window.requestAnimationFrame = (function() {\n      var nativeRaf = window.webkitRequestAnimationFrame ||\n        window.mozRequestAnimationFrame;\n\n      return nativeRaf ?\n        function(callback) {\n          return nativeRaf(function() {\n            callback(performance.now());\n          });\n        } :\n        function( callback ){\n          return window.setTimeout(callback, 1000 / 60);\n        };\n    })();\n  }\n\n  if (!window.cancelAnimationFrame) {\n    window.cancelAnimationFrame = (function() {\n      return  window.webkitCancelAnimationFrame ||\n        window.mozCancelAnimationFrame ||\n        function(id) {\n          clearTimeout(id);\n        };\n    })();\n  }\n\n  // utility\n\n  function createDOM(inTagOrNode, inHTML, inAttrs) {\n    var dom = typeof inTagOrNode == 'string' ?\n        document.createElement(inTagOrNode) : inTagOrNode.cloneNode(true);\n    dom.innerHTML = inHTML;\n    if (inAttrs) {\n      for (var n in inAttrs) {\n        dom.setAttribute(n, inAttrs[n]);\n      }\n    }\n    return dom;\n  }\n  // Make a stub for Polymer() for polyfill purposes; under the HTMLImports\n  // polyfill, scripts in the main document run before imports. That means\n  // if (1) polymer is imported and (2) Polymer() is called in the main document\n  // in a script after the import, 2 occurs before 1. We correct this here\n  // by specfiically patching Polymer(); this is not necessary under native\n  // HTMLImports.\n  var elementDeclarations = [];\n\n  var polymerStub = function(name, dictionary) {\n    elementDeclarations.push(arguments);\n  }\n  window.Polymer = polymerStub;\n\n  // deliver queued delcarations\n  scope.deliverDeclarations = function() {\n    scope.deliverDeclarations = function() {\n     throw 'Possible attempt to load Polymer twice';\n    };\n    return elementDeclarations;\n  }\n\n  // Once DOMContent has loaded, any main document scripts that depend on\n  // Polymer() should have run. Calling Polymer() now is an error until\n  // polymer is imported.\n  window.addEventListener('DOMContentLoaded', function() {\n    if (window.Polymer === polymerStub) {\n      window.Polymer = function() {\n        console.error('You tried to use polymer without loading it first. To ' +\n          'load polymer, <link rel=\"import\" href=\"' + \n          'components/polymer/polymer.html\">');\n      };\n    }\n  });\n\n  // exports\n  scope.createDOM = createDOM;\n\n})(window.Platform);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n// poor man's adapter for template.content on various platform scenarios\nwindow.templateContent = window.templateContent || function(inTemplate) {\n  return inTemplate.content;\n};","(function(scope) {\n  \n  scope = scope || (window.Inspector = {});\n  \n  var inspector;\n\n  window.sinspect = function(inNode, inProxy) {\n    if (!inspector) {\n      inspector = window.open('', 'ShadowDOM Inspector', null, true);\n      inspector.document.write(inspectorHTML);\n      //inspector.document.close();\n      inspector.api = {\n        shadowize: shadowize\n      };\n    }\n    inspect(inNode || wrap(document.body), inProxy);\n  };\n\n  var inspectorHTML = [\n    '<!DOCTYPE html>',\n    '<html>',\n    '  <head>',\n    '    <title>ShadowDOM Inspector</title>',\n    '    <style>',\n    '      body {',\n    '      }',\n    '      pre {',\n    '        font: 9pt \"Courier New\", monospace;',\n    '        line-height: 1.5em;',\n    '      }',\n    '      tag {',\n    '        color: purple;',\n    '      }',\n    '      ul {',\n    '         margin: 0;',\n    '         padding: 0;',\n    '         list-style: none;',\n    '      }',\n    '      li {',\n    '         display: inline-block;',\n    '         background-color: #f1f1f1;',\n    '         padding: 4px 6px;',\n    '         border-radius: 4px;',\n    '         margin-right: 4px;',\n    '      }',\n    '    </style>',\n    '  </head>',\n    '  <body>',\n    '    <ul id=\"crumbs\">',\n    '    </ul>',\n    '    <div id=\"tree\"></div>',\n    '  </body>',\n    '</html>'\n  ].join('\\n');\n  \n  var crumbs = [];\n\n  var displayCrumbs = function() {\n    // alias our document\n    var d = inspector.document;\n    // get crumbbar\n    var cb = d.querySelector('#crumbs');\n    // clear crumbs\n    cb.textContent = '';\n    // build new crumbs\n    for (var i=0, c; c=crumbs[i]; i++) {\n      var a = d.createElement('a');\n      a.href = '#';\n      a.textContent = c.localName;\n      a.idx = i;\n      a.onclick = function(event) {\n        var c;\n        while (crumbs.length > this.idx) {\n          c = crumbs.pop();\n        }\n        inspect(c.shadow || c, c);\n        event.preventDefault();\n      };\n      cb.appendChild(d.createElement('li')).appendChild(a);\n    }\n  };\n\n  var inspect = function(inNode, inProxy) {\n    // alias our document\n    var d = inspector.document;\n    // reset list of drillable nodes\n    drillable = [];\n    // memoize our crumb proxy\n    var proxy = inProxy || inNode;\n    crumbs.push(proxy);\n    // update crumbs\n    displayCrumbs();\n    // reflect local tree\n    d.body.querySelector('#tree').innerHTML =\n        '<pre>' + output(inNode, inNode.childNodes) + '</pre>';\n  };\n\n  var forEach = Array.prototype.forEach.call.bind(Array.prototype.forEach);\n\n  var blacklisted = {STYLE:1, SCRIPT:1, \"#comment\": 1, TEMPLATE: 1};\n  var blacklist = function(inNode) {\n    return blacklisted[inNode.nodeName];\n  };\n\n  var output = function(inNode, inChildNodes, inIndent) {\n    if (blacklist(inNode)) {\n      return '';\n    }\n    var indent = inIndent || '';\n    if (inNode.localName || inNode.nodeType == 11) {\n      var name = inNode.localName || 'shadow-root';\n      //inChildNodes = ShadowDOM.localNodes(inNode);\n      var info = indent + describe(inNode);\n      // if only textNodes\n      // TODO(sjmiles): make correct for ShadowDOM\n      /*if (!inNode.children.length && inNode.localName !== 'content' && inNode.localName !== 'shadow') {\n        info += catTextContent(inChildNodes);\n      } else*/ {\n        // TODO(sjmiles): native <shadow> has no reference to its projection\n        if (name == 'content' /*|| name == 'shadow'*/) {\n          inChildNodes = inNode.getDistributedNodes();\n        }\n        info += '<br/>';\n        var ind = indent + '&nbsp;&nbsp;';\n        forEach(inChildNodes, function(n) {\n          info += output(n, n.childNodes, ind);\n        });\n        info += indent;\n      }\n      if (!({br:1}[name])) {\n        info += '<tag>&lt;/' + name + '&gt;</tag>';\n        info += '<br/>';\n      }\n    } else {\n      var text = inNode.textContent.trim();\n      info = text ? indent + '\"' + text + '\"' + '<br/>' : '';\n    }\n    return info;\n  };\n\n  var catTextContent = function(inChildNodes) {\n    var info = '';\n    forEach(inChildNodes, function(n) {\n      info += n.textContent.trim();\n    });\n    return info;\n  };\n\n  var drillable = [];\n\n  var describe = function(inNode) {\n    var tag = '<tag>' + '&lt;';\n    var name = inNode.localName || 'shadow-root';\n    if (inNode.webkitShadowRoot || inNode.shadowRoot) {\n      tag += ' <button idx=\"' + drillable.length +\n        '\" onclick=\"api.shadowize.call(this)\">' + name + '</button>';\n      drillable.push(inNode);\n    } else {\n      tag += name || 'shadow-root';\n    }\n    if (inNode.attributes) {\n      forEach(inNode.attributes, function(a) {\n        tag += ' ' + a.name + (a.value ? '=\"' + a.value + '\"' : '');\n      });\n    }\n    tag += '&gt;'+ '</tag>';\n    return tag;\n  };\n\n  // remote api\n\n  shadowize = function() {\n    var idx = Number(this.attributes.idx.value);\n    //alert(idx);\n    var node = drillable[idx];\n    if (node) {\n      inspect(node.webkitShadowRoot || node.shadowRoot, node)\n    } else {\n      console.log(\"bad shadowize node\");\n      console.dir(this);\n    }\n  };\n  \n  // export\n  \n  scope.output = output;\n  \n})(window.Inspector);\n\n\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(scope) {\n\n  // TODO(sorvell): It's desireable to provide a default stylesheet \n  // that's convenient for styling unresolved elements, but\n  // it's cumbersome to have to include this manually in every page.\n  // It would make sense to put inside some HTMLImport but \n  // the HTMLImports polyfill does not allow loading of stylesheets \n  // that block rendering. Therefore this injection is tolerated here.\n\n  var style = document.createElement('style');\n  style.textContent = ''\n      + 'body {'\n      + 'transition: opacity ease-in 0.2s;' \n      + ' } \\n'\n      + 'body[unresolved] {'\n      + 'opacity: 0; display: block; overflow: hidden;' \n      + ' } \\n'\n      ;\n  var head = document.querySelector('head');\n  head.insertBefore(style, head.firstChild);\n\n})(Platform);\n","(function(scope) {\n\n  function withDependencies(task, depends) {\n    depends = depends || [];\n    if (!depends.map) {\n      depends = [depends];\n    }\n    return task.apply(this, depends.map(marshal));\n  }\n\n  function module(name, dependsOrFactory, moduleFactory) {\n    var module;\n    switch (arguments.length) {\n      case 0:\n        return;\n      case 1:\n        module = null;\n        break;\n      case 2:\n        module = dependsOrFactory.apply(this);\n        break;\n      default:\n        module = withDependencies(moduleFactory, dependsOrFactory);\n        break;\n    }\n    modules[name] = module;\n  };\n\n  function marshal(name) {\n    return modules[name];\n  }\n\n  var modules = {};\n\n  function using(depends, task) {\n    HTMLImports.whenImportsReady(function() {\n      withDependencies(task, depends);\n    });\n  };\n\n  // exports\n\n  scope.marshal = marshal;\n  scope.module = module;\n  scope.using = using;\n\n})(window);","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(scope) {\n\nvar iterations = 0;\nvar callbacks = [];\nvar twiddle = document.createTextNode('');\n\nfunction endOfMicrotask(callback) {\n  twiddle.textContent = iterations++;\n  callbacks.push(callback);\n}\n\nfunction atEndOfMicrotask() {\n  while (callbacks.length) {\n    callbacks.shift()();\n  }\n}\n\nnew (window.MutationObserver || JsMutationObserver)(atEndOfMicrotask)\n  .observe(twiddle, {characterData: true})\n  ;\n\n// exports\n\nscope.endOfMicrotask = endOfMicrotask;\n\n})(Platform);\n\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(scope) {\n\nvar urlResolver = {\n  resolveDom: function(root, url) {\n    url = url || root.ownerDocument.baseURI;\n    this.resolveAttributes(root, url);\n    this.resolveStyles(root, url);\n    // handle template.content\n    var templates = root.querySelectorAll('template');\n    if (templates) {\n      for (var i = 0, l = templates.length, t; (i < l) && (t = templates[i]); i++) {\n        if (t.content) {\n          this.resolveDom(t.content, url);\n        }\n      }\n    }\n  },\n  resolveTemplate: function(template) {\n    this.resolveDom(template.content, template.ownerDocument.baseURI);\n  },\n  resolveStyles: function(root, url) {\n    var styles = root.querySelectorAll('style');\n    if (styles) {\n      for (var i = 0, l = styles.length, s; (i < l) && (s = styles[i]); i++) {\n        this.resolveStyle(s, url);\n      }\n    }\n  },\n  resolveStyle: function(style, url) {\n    url = url || style.ownerDocument.baseURI;\n    style.textContent = this.resolveCssText(style.textContent, url);\n  },\n  resolveCssText: function(cssText, baseUrl) {\n    cssText = replaceUrlsInCssText(cssText, baseUrl, CSS_URL_REGEXP);\n    return replaceUrlsInCssText(cssText, baseUrl, CSS_IMPORT_REGEXP);\n  },\n  resolveAttributes: function(root, url) {\n    if (root.hasAttributes && root.hasAttributes()) {\n      this.resolveElementAttributes(root, url);\n    }\n    // search for attributes that host urls\n    var nodes = root && root.querySelectorAll(URL_ATTRS_SELECTOR);\n    if (nodes) {\n      for (var i = 0, l = nodes.length, n; (i < l) && (n = nodes[i]); i++) {\n        this.resolveElementAttributes(n, url);\n      }\n    }\n  },\n  resolveElementAttributes: function(node, url) {\n    url = url || node.ownerDocument.baseURI;\n    URL_ATTRS.forEach(function(v) {\n      var attr = node.attributes[v];\n      var value = attr && attr.value;\n      var replacement;\n      if (value && value.search(URL_TEMPLATE_SEARCH) < 0) {\n        if (v === 'style') {\n          replacement = replaceUrlsInCssText(value, url, CSS_URL_REGEXP);\n        } else {\n          replacement = resolveRelativeUrl(url, value);\n        }\n        attr.value = replacement;\n      }\n    });\n  }\n};\n\nvar CSS_URL_REGEXP = /(url\\()([^)]*)(\\))/g;\nvar CSS_IMPORT_REGEXP = /(@import[\\s]+(?!url\\())([^;]*)(;)/g;\nvar URL_ATTRS = ['href', 'src', 'action', 'style'];\nvar URL_ATTRS_SELECTOR = '[' + URL_ATTRS.join('],[') + ']';\nvar URL_TEMPLATE_SEARCH = '{{.*}}';\n\nfunction replaceUrlsInCssText(cssText, baseUrl, regexp) {\n  return cssText.replace(regexp, function(m, pre, url, post) {\n    var urlPath = url.replace(/[\"']/g, '');\n    urlPath = resolveRelativeUrl(baseUrl, urlPath);\n    return pre + '\\'' + urlPath + '\\'' + post;\n  });\n}\n\nfunction resolveRelativeUrl(baseUrl, url) {\n  var u = new URL(url, baseUrl);\n  return makeDocumentRelPath(u.href);\n}\n\nfunction makeDocumentRelPath(url) {\n  var root = document.location;\n  var u = new URL(url, root);\n  if (u.host === root.host && u.port === root.port &&\n      u.protocol === root.protocol) {\n    return makeRelPath(root.pathname, u.pathname);\n  } else {\n    return url;\n  }\n}\n\n// make a relative path from source to target\nfunction makeRelPath(source, target) {\n  var s = source.split('/');\n  var t = target.split('/');\n  while (s.length && s[0] === t[0]){\n    s.shift();\n    t.shift();\n  }\n  for (var i = 0, l = s.length - 1; i < l; i++) {\n    t.unshift('..');\n  }\n  return t.join('/');\n}\n\n// exports\nscope.urlResolver = urlResolver;\n\n})(Platform);\n","/*\n * Copyright 2012 The Polymer Authors. All rights reserved.\n * Use of this source code is goverened by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(global) {\n\n  var registrationsTable = new WeakMap();\n\n  // We use setImmediate or postMessage for our future callback.\n  var setImmediate = window.msSetImmediate;\n\n  // Use post message to emulate setImmediate.\n  if (!setImmediate) {\n    var setImmediateQueue = [];\n    var sentinel = String(Math.random());\n    window.addEventListener('message', function(e) {\n      if (e.data === sentinel) {\n        var queue = setImmediateQueue;\n        setImmediateQueue = [];\n        queue.forEach(function(func) {\n          func();\n        });\n      }\n    });\n    setImmediate = function(func) {\n      setImmediateQueue.push(func);\n      window.postMessage(sentinel, '*');\n    };\n  }\n\n  // This is used to ensure that we never schedule 2 callas to setImmediate\n  var isScheduled = false;\n\n  // Keep track of observers that needs to be notified next time.\n  var scheduledObservers = [];\n\n  /**\n   * Schedules |dispatchCallback| to be called in the future.\n   * @param {MutationObserver} observer\n   */\n  function scheduleCallback(observer) {\n    scheduledObservers.push(observer);\n    if (!isScheduled) {\n      isScheduled = true;\n      setImmediate(dispatchCallbacks);\n    }\n  }\n\n  function wrapIfNeeded(node) {\n    return window.ShadowDOMPolyfill &&\n        window.ShadowDOMPolyfill.wrapIfNeeded(node) ||\n        node;\n  }\n\n  function dispatchCallbacks() {\n    // http://dom.spec.whatwg.org/#mutation-observers\n\n    isScheduled = false; // Used to allow a new setImmediate call above.\n\n    var observers = scheduledObservers;\n    scheduledObservers = [];\n    // Sort observers based on their creation UID (incremental).\n    observers.sort(function(o1, o2) {\n      return o1.uid_ - o2.uid_;\n    });\n\n    var anyNonEmpty = false;\n    observers.forEach(function(observer) {\n\n      // 2.1, 2.2\n      var queue = observer.takeRecords();\n      // 2.3. Remove all transient registered observers whose observer is mo.\n      removeTransientObserversFor(observer);\n\n      // 2.4\n      if (queue.length) {\n        observer.callback_(queue, observer);\n        anyNonEmpty = true;\n      }\n    });\n\n    // 3.\n    if (anyNonEmpty)\n      dispatchCallbacks();\n  }\n\n  function removeTransientObserversFor(observer) {\n    observer.nodes_.forEach(function(node) {\n      var registrations = registrationsTable.get(node);\n      if (!registrations)\n        return;\n      registrations.forEach(function(registration) {\n        if (registration.observer === observer)\n          registration.removeTransientObservers();\n      });\n    });\n  }\n\n  /**\n   * This function is used for the \"For each registered observer observer (with\n   * observer's options as options) in target's list of registered observers,\n   * run these substeps:\" and the \"For each ancestor ancestor of target, and for\n   * each registered observer observer (with options options) in ancestor's list\n   * of registered observers, run these substeps:\" part of the algorithms. The\n   * |options.subtree| is checked to ensure that the callback is called\n   * correctly.\n   *\n   * @param {Node} target\n   * @param {function(MutationObserverInit):MutationRecord} callback\n   */\n  function forEachAncestorAndObserverEnqueueRecord(target, callback) {\n    for (var node = target; node; node = node.parentNode) {\n      var registrations = registrationsTable.get(node);\n\n      if (registrations) {\n        for (var j = 0; j < registrations.length; j++) {\n          var registration = registrations[j];\n          var options = registration.options;\n\n          // Only target ignores subtree.\n          if (node !== target && !options.subtree)\n            continue;\n\n          var record = callback(options);\n          if (record)\n            registration.enqueue(record);\n        }\n      }\n    }\n  }\n\n  var uidCounter = 0;\n\n  /**\n   * The class that maps to the DOM MutationObserver interface.\n   * @param {Function} callback.\n   * @constructor\n   */\n  function JsMutationObserver(callback) {\n    this.callback_ = callback;\n    this.nodes_ = [];\n    this.records_ = [];\n    this.uid_ = ++uidCounter;\n  }\n\n  JsMutationObserver.prototype = {\n    observe: function(target, options) {\n      target = wrapIfNeeded(target);\n\n      // 1.1\n      if (!options.childList && !options.attributes && !options.characterData ||\n\n          // 1.2\n          options.attributeOldValue && !options.attributes ||\n\n          // 1.3\n          options.attributeFilter && options.attributeFilter.length &&\n              !options.attributes ||\n\n          // 1.4\n          options.characterDataOldValue && !options.characterData) {\n\n        throw new SyntaxError();\n      }\n\n      var registrations = registrationsTable.get(target);\n      if (!registrations)\n        registrationsTable.set(target, registrations = []);\n\n      // 2\n      // If target's list of registered observers already includes a registered\n      // observer associated with the context object, replace that registered\n      // observer's options with options.\n      var registration;\n      for (var i = 0; i < registrations.length; i++) {\n        if (registrations[i].observer === this) {\n          registration = registrations[i];\n          registration.removeListeners();\n          registration.options = options;\n          break;\n        }\n      }\n\n      // 3.\n      // Otherwise, add a new registered observer to target's list of registered\n      // observers with the context object as the observer and options as the\n      // options, and add target to context object's list of nodes on which it\n      // is registered.\n      if (!registration) {\n        registration = new Registration(this, target, options);\n        registrations.push(registration);\n        this.nodes_.push(target);\n      }\n\n      registration.addListeners();\n    },\n\n    disconnect: function() {\n      this.nodes_.forEach(function(node) {\n        var registrations = registrationsTable.get(node);\n        for (var i = 0; i < registrations.length; i++) {\n          var registration = registrations[i];\n          if (registration.observer === this) {\n            registration.removeListeners();\n            registrations.splice(i, 1);\n            // Each node can only have one registered observer associated with\n            // this observer.\n            break;\n          }\n        }\n      }, this);\n      this.records_ = [];\n    },\n\n    takeRecords: function() {\n      var copyOfRecords = this.records_;\n      this.records_ = [];\n      return copyOfRecords;\n    }\n  };\n\n  /**\n   * @param {string} type\n   * @param {Node} target\n   * @constructor\n   */\n  function MutationRecord(type, target) {\n    this.type = type;\n    this.target = target;\n    this.addedNodes = [];\n    this.removedNodes = [];\n    this.previousSibling = null;\n    this.nextSibling = null;\n    this.attributeName = null;\n    this.attributeNamespace = null;\n    this.oldValue = null;\n  }\n\n  function copyMutationRecord(original) {\n    var record = new MutationRecord(original.type, original.target);\n    record.addedNodes = original.addedNodes.slice();\n    record.removedNodes = original.removedNodes.slice();\n    record.previousSibling = original.previousSibling;\n    record.nextSibling = original.nextSibling;\n    record.attributeName = original.attributeName;\n    record.attributeNamespace = original.attributeNamespace;\n    record.oldValue = original.oldValue;\n    return record;\n  };\n\n  // We keep track of the two (possibly one) records used in a single mutation.\n  var currentRecord, recordWithOldValue;\n\n  /**\n   * Creates a record without |oldValue| and caches it as |currentRecord| for\n   * later use.\n   * @param {string} oldValue\n   * @return {MutationRecord}\n   */\n  function getRecord(type, target) {\n    return currentRecord = new MutationRecord(type, target);\n  }\n\n  /**\n   * Gets or creates a record with |oldValue| based in the |currentRecord|\n   * @param {string} oldValue\n   * @return {MutationRecord}\n   */\n  function getRecordWithOldValue(oldValue) {\n    if (recordWithOldValue)\n      return recordWithOldValue;\n    recordWithOldValue = copyMutationRecord(currentRecord);\n    recordWithOldValue.oldValue = oldValue;\n    return recordWithOldValue;\n  }\n\n  function clearRecords() {\n    currentRecord = recordWithOldValue = undefined;\n  }\n\n  /**\n   * @param {MutationRecord} record\n   * @return {boolean} Whether the record represents a record from the current\n   * mutation event.\n   */\n  function recordRepresentsCurrentMutation(record) {\n    return record === recordWithOldValue || record === currentRecord;\n  }\n\n  /**\n   * Selects which record, if any, to replace the last record in the queue.\n   * This returns |null| if no record should be replaced.\n   *\n   * @param {MutationRecord} lastRecord\n   * @param {MutationRecord} newRecord\n   * @param {MutationRecord}\n   */\n  function selectRecord(lastRecord, newRecord) {\n    if (lastRecord === newRecord)\n      return lastRecord;\n\n    // Check if the the record we are adding represents the same record. If\n    // so, we keep the one with the oldValue in it.\n    if (recordWithOldValue && recordRepresentsCurrentMutation(lastRecord))\n      return recordWithOldValue;\n\n    return null;\n  }\n\n  /**\n   * Class used to represent a registered observer.\n   * @param {MutationObserver} observer\n   * @param {Node} target\n   * @param {MutationObserverInit} options\n   * @constructor\n   */\n  function Registration(observer, target, options) {\n    this.observer = observer;\n    this.target = target;\n    this.options = options;\n    this.transientObservedNodes = [];\n  }\n\n  Registration.prototype = {\n    enqueue: function(record) {\n      var records = this.observer.records_;\n      var length = records.length;\n\n      // There are cases where we replace the last record with the new record.\n      // For example if the record represents the same mutation we need to use\n      // the one with the oldValue. If we get same record (this can happen as we\n      // walk up the tree) we ignore the new record.\n      if (records.length > 0) {\n        var lastRecord = records[length - 1];\n        var recordToReplaceLast = selectRecord(lastRecord, record);\n        if (recordToReplaceLast) {\n          records[length - 1] = recordToReplaceLast;\n          return;\n        }\n      } else {\n        scheduleCallback(this.observer);\n      }\n\n      records[length] = record;\n    },\n\n    addListeners: function() {\n      this.addListeners_(this.target);\n    },\n\n    addListeners_: function(node) {\n      var options = this.options;\n      if (options.attributes)\n        node.addEventListener('DOMAttrModified', this, true);\n\n      if (options.characterData)\n        node.addEventListener('DOMCharacterDataModified', this, true);\n\n      if (options.childList)\n        node.addEventListener('DOMNodeInserted', this, true);\n\n      if (options.childList || options.subtree)\n        node.addEventListener('DOMNodeRemoved', this, true);\n    },\n\n    removeListeners: function() {\n      this.removeListeners_(this.target);\n    },\n\n    removeListeners_: function(node) {\n      var options = this.options;\n      if (options.attributes)\n        node.removeEventListener('DOMAttrModified', this, true);\n\n      if (options.characterData)\n        node.removeEventListener('DOMCharacterDataModified', this, true);\n\n      if (options.childList)\n        node.removeEventListener('DOMNodeInserted', this, true);\n\n      if (options.childList || options.subtree)\n        node.removeEventListener('DOMNodeRemoved', this, true);\n    },\n\n    /**\n     * Adds a transient observer on node. The transient observer gets removed\n     * next time we deliver the change records.\n     * @param {Node} node\n     */\n    addTransientObserver: function(node) {\n      // Don't add transient observers on the target itself. We already have all\n      // the required listeners set up on the target.\n      if (node === this.target)\n        return;\n\n      this.addListeners_(node);\n      this.transientObservedNodes.push(node);\n      var registrations = registrationsTable.get(node);\n      if (!registrations)\n        registrationsTable.set(node, registrations = []);\n\n      // We know that registrations does not contain this because we already\n      // checked if node === this.target.\n      registrations.push(this);\n    },\n\n    removeTransientObservers: function() {\n      var transientObservedNodes = this.transientObservedNodes;\n      this.transientObservedNodes = [];\n\n      transientObservedNodes.forEach(function(node) {\n        // Transient observers are never added to the target.\n        this.removeListeners_(node);\n\n        var registrations = registrationsTable.get(node);\n        for (var i = 0; i < registrations.length; i++) {\n          if (registrations[i] === this) {\n            registrations.splice(i, 1);\n            // Each node can only have one registered observer associated with\n            // this observer.\n            break;\n          }\n        }\n      }, this);\n    },\n\n    handleEvent: function(e) {\n      // Stop propagation since we are managing the propagation manually.\n      // This means that other mutation events on the page will not work\n      // correctly but that is by design.\n      e.stopImmediatePropagation();\n\n      switch (e.type) {\n        case 'DOMAttrModified':\n          // http://dom.spec.whatwg.org/#concept-mo-queue-attributes\n\n          var name = e.attrName;\n          var namespace = e.relatedNode.namespaceURI;\n          var target = e.target;\n\n          // 1.\n          var record = new getRecord('attributes', target);\n          record.attributeName = name;\n          record.attributeNamespace = namespace;\n\n          // 2.\n          var oldValue =\n              e.attrChange === MutationEvent.ADDITION ? null : e.prevValue;\n\n          forEachAncestorAndObserverEnqueueRecord(target, function(options) {\n            // 3.1, 4.2\n            if (!options.attributes)\n              return;\n\n            // 3.2, 4.3\n            if (options.attributeFilter && options.attributeFilter.length &&\n                options.attributeFilter.indexOf(name) === -1 &&\n                options.attributeFilter.indexOf(namespace) === -1) {\n              return;\n            }\n            // 3.3, 4.4\n            if (options.attributeOldValue)\n              return getRecordWithOldValue(oldValue);\n\n            // 3.4, 4.5\n            return record;\n          });\n\n          break;\n\n        case 'DOMCharacterDataModified':\n          // http://dom.spec.whatwg.org/#concept-mo-queue-characterdata\n          var target = e.target;\n\n          // 1.\n          var record = getRecord('characterData', target);\n\n          // 2.\n          var oldValue = e.prevValue;\n\n\n          forEachAncestorAndObserverEnqueueRecord(target, function(options) {\n            // 3.1, 4.2\n            if (!options.characterData)\n              return;\n\n            // 3.2, 4.3\n            if (options.characterDataOldValue)\n              return getRecordWithOldValue(oldValue);\n\n            // 3.3, 4.4\n            return record;\n          });\n\n          break;\n\n        case 'DOMNodeRemoved':\n          this.addTransientObserver(e.target);\n          // Fall through.\n        case 'DOMNodeInserted':\n          // http://dom.spec.whatwg.org/#concept-mo-queue-childlist\n          var target = e.relatedNode;\n          var changedNode = e.target;\n          var addedNodes, removedNodes;\n          if (e.type === 'DOMNodeInserted') {\n            addedNodes = [changedNode];\n            removedNodes = [];\n          } else {\n\n            addedNodes = [];\n            removedNodes = [changedNode];\n          }\n          var previousSibling = changedNode.previousSibling;\n          var nextSibling = changedNode.nextSibling;\n\n          // 1.\n          var record = getRecord('childList', target);\n          record.addedNodes = addedNodes;\n          record.removedNodes = removedNodes;\n          record.previousSibling = previousSibling;\n          record.nextSibling = nextSibling;\n\n          forEachAncestorAndObserverEnqueueRecord(target, function(options) {\n            // 2.1, 3.2\n            if (!options.childList)\n              return;\n\n            // 2.2, 3.3\n            return record;\n          });\n\n      }\n\n      clearRecords();\n    }\n  };\n\n  global.JsMutationObserver = JsMutationObserver;\n\n  if (!global.MutationObserver)\n    global.MutationObserver = JsMutationObserver;\n\n\n})(this);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\nwindow.HTMLImports = window.HTMLImports || {flags:{}};","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(scope) {\n\n  // imports\n  var path = scope.path;\n  var xhr = scope.xhr;\n  var flags = scope.flags;\n\n  // TODO(sorvell): this loader supports a dynamic list of urls\n  // and an oncomplete callback that is called when the loader is done.\n  // The polyfill currently does *not* need this dynamism or the onComplete\n  // concept. Because of this, the loader could be simplified quite a bit.\n  var Loader = function(onLoad, onComplete) {\n    this.cache = {};\n    this.onload = onLoad;\n    this.oncomplete = onComplete;\n    this.inflight = 0;\n    this.pending = {};\n  };\n\n  Loader.prototype = {\n    addNodes: function(nodes) {\n      // number of transactions to complete\n      this.inflight += nodes.length;\n      // commence transactions\n      for (var i=0, l=nodes.length, n; (i<l) && (n=nodes[i]); i++) {\n        this.require(n);\n      }\n      // anything to do?\n      this.checkDone();\n    },\n    addNode: function(node) {\n      // number of transactions to complete\n      this.inflight++;\n      // commence transactions\n      this.require(node);\n      // anything to do?\n      this.checkDone();\n    },\n    require: function(elt) {\n      var url = elt.src || elt.href;\n      // ensure we have a standard url that can be used\n      // reliably for deduping.\n      // TODO(sjmiles): ad-hoc\n      elt.__nodeUrl = url;\n      // deduplication\n      if (!this.dedupe(url, elt)) {\n        // fetch this resource\n        this.fetch(url, elt);\n      }\n    },\n    dedupe: function(url, elt) {\n      if (this.pending[url]) {\n        // add to list of nodes waiting for inUrl\n        this.pending[url].push(elt);\n        // don't need fetch\n        return true;\n      }\n      var resource;\n      if (this.cache[url]) {\n        this.onload(url, elt, this.cache[url]);\n        // finished this transaction\n        this.tail();\n        // don't need fetch\n        return true;\n      }\n      // first node waiting for inUrl\n      this.pending[url] = [elt];\n      // need fetch (not a dupe)\n      return false;\n    },\n    fetch: function(url, elt) {\n      flags.load && console.log('fetch', url, elt);\n      if (url.match(/^data:/)) {\n        // Handle Data URI Scheme\n        var pieces = url.split(',');\n        var header = pieces[0];\n        var body = pieces[1];\n        if(header.indexOf(';base64') > -1) {\n          body = atob(body);\n        } else {\n          body = decodeURIComponent(body);\n        }\n        setTimeout(function() {\n            this.receive(url, elt, null, body);\n        }.bind(this), 0);\n      } else {\n        var receiveXhr = function(err, resource) {\n          this.receive(url, elt, err, resource);\n        }.bind(this);\n        xhr.load(url, receiveXhr);\n        // TODO(sorvell): blocked on)\n        // https://code.google.com/p/chromium/issues/detail?id=257221\n        // xhr'ing for a document makes scripts in imports runnable; otherwise\n        // they are not; however, it requires that we have doctype=html in\n        // the import which is unacceptable. This is only needed on Chrome\n        // to avoid the bug above.\n        /*\n        if (isDocumentLink(elt)) {\n          xhr.loadDocument(url, receiveXhr);\n        } else {\n          xhr.load(url, receiveXhr);\n        }\n        */\n      }\n    },\n    receive: function(url, elt, err, resource) {\n      this.cache[url] = resource;\n      var $p = this.pending[url];\n      for (var i=0, l=$p.length, p; (i<l) && (p=$p[i]); i++) {\n        //if (!err) {\n          this.onload(url, p, resource);\n        //}\n        this.tail();\n      }\n      this.pending[url] = null;\n    },\n    tail: function() {\n      --this.inflight;\n      this.checkDone();\n    },\n    checkDone: function() {\n      if (!this.inflight) {\n        this.oncomplete();\n      }\n    }\n  };\n\n  xhr = xhr || {\n    async: true,\n    ok: function(request) {\n      return (request.status >= 200 && request.status < 300)\n          || (request.status === 304)\n          || (request.status === 0);\n    },\n    load: function(url, next, nextContext) {\n      var request = new XMLHttpRequest();\n      if (scope.flags.debug || scope.flags.bust) {\n        url += '?' + Math.random();\n      }\n      request.open('GET', url, xhr.async);\n      request.addEventListener('readystatechange', function(e) {\n        if (request.readyState === 4) {\n          next.call(nextContext, !xhr.ok(request) && request,\n              request.response || request.responseText, url);\n        }\n      });\n      request.send();\n      return request;\n    },\n    loadDocument: function(url, next, nextContext) {\n      this.load(url, next, nextContext).responseType = 'document';\n    }\n  };\n\n  // exports\n  scope.xhr = xhr;\n  scope.Loader = Loader;\n\n})(window.HTMLImports);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(scope) {\n\nvar IMPORT_LINK_TYPE = 'import';\nvar flags = scope.flags;\nvar isIe = /Trident/.test(navigator.userAgent);\n// TODO(sorvell): SD polyfill intrusion\nvar mainDoc = window.ShadowDOMPolyfill ? \n    window.ShadowDOMPolyfill.wrapIfNeeded(document) : document;\n\n// importParser\n// highlander object to manage parsing of imports\n// parses import related elements\n// and ensures proper parse order\n// parse order is enforced by crawling the tree and monitoring which elements\n// have been parsed; async parsing is also supported.\n\n// highlander object for parsing a document tree\nvar importParser = {\n  // parse selectors for main document elements\n  documentSelectors: 'link[rel=' + IMPORT_LINK_TYPE + ']',\n  // parse selectors for import document elements\n  importsSelectors: [\n    'link[rel=' + IMPORT_LINK_TYPE + ']',\n    'link[rel=stylesheet]',\n    'style',\n    'script:not([type])',\n    'script[type=\"text/javascript\"]'\n  ].join(','),\n  map: {\n    link: 'parseLink',\n    script: 'parseScript',\n    style: 'parseStyle'\n  },\n  // try to parse the next import in the tree\n  parseNext: function() {\n    var next = this.nextToParse();\n    if (next) {\n      this.parse(next);\n    }\n  },\n  parse: function(elt) {\n    if (this.isParsed(elt)) {\n      flags.parse && console.log('[%s] is already parsed', elt.localName);\n      return;\n    }\n    var fn = this[this.map[elt.localName]];\n    if (fn) {\n      this.markParsing(elt);\n      fn.call(this, elt);\n    }\n  },\n  // only 1 element may be parsed at a time; parsing is async so, each\n  // parsing implementation must inform the system that parsing is complete\n  // via markParsingComplete.\n  markParsing: function(elt) {\n    flags.parse && console.log('parsing', elt);\n    this.parsingElement = elt;\n  },\n  markParsingComplete: function(elt) {\n    elt.__importParsed = true;\n    if (elt.__importElement) {\n      elt.__importElement.__importParsed = true;\n    }\n    this.parsingElement = null;\n    flags.parse && console.log('completed', elt);\n    this.parseNext();\n  },\n  parseImport: function(elt) {\n    elt.import.__importParsed = true;\n    // TODO(sorvell): consider if there's a better way to do this;\n    // expose an imports parsing hook; this is needed, for example, by the\n    // CustomElements polyfill.\n    if (HTMLImports.__importsParsingHook) {\n      HTMLImports.__importsParsingHook(elt);\n    }\n    // fire load event\n    if (elt.__resource) {\n      elt.dispatchEvent(new CustomEvent('load', {bubbles: false}));    \n    } else {\n      elt.dispatchEvent(new CustomEvent('error', {bubbles: false}));\n    }\n    // TODO(sorvell): workaround for Safari addEventListener not working\n    // for elements not in the main document.\n    if (elt.__pending) {\n      var fn;\n      while (elt.__pending.length) {\n        fn = elt.__pending.shift();\n        if (fn) {\n          fn({target: elt});\n        }\n      }\n    }\n    this.markParsingComplete(elt);\n  },\n  parseLink: function(linkElt) {\n    if (nodeIsImport(linkElt)) {\n      this.parseImport(linkElt);\n    } else {\n      // make href absolute\n      linkElt.href = linkElt.href;\n      this.parseGeneric(linkElt);\n    }\n  },\n  parseStyle: function(elt) {\n    // TODO(sorvell): style element load event can just not fire so clone styles\n    var src = elt;\n    elt = cloneStyle(elt);\n    elt.__importElement = src;\n    this.parseGeneric(elt);\n  },\n  parseGeneric: function(elt) {\n    this.trackElement(elt);\n    document.head.appendChild(elt);\n  },\n  // tracks when a loadable element has loaded\n  trackElement: function(elt, callback) {\n    var self = this;\n    var done = function(e) {\n      if (callback) {\n        callback(e);\n      }\n      self.markParsingComplete(elt);\n    };\n    elt.addEventListener('load', done);\n    elt.addEventListener('error', done);\n\n    // NOTE: IE does not fire \"load\" event for styles that have already loaded\n    // This is in violation of the spec, so we try our hardest to work around it\n    if (isIe && elt.localName === 'style') {\n      var fakeLoad = false;\n      // If there's not @import in the textContent, assume it has loaded\n      if (elt.textContent.indexOf('@import') == -1) {\n        fakeLoad = true;\n      // if we have a sheet, we have been parsed\n      } else if (elt.sheet) {\n        fakeLoad = true;\n        var csr = elt.sheet.cssRules;\n        var len = csr ? csr.length : 0;\n        // search the rules for @import's\n        for (var i = 0, r; (i < len) && (r = csr[i]); i++) {\n          if (r.type === CSSRule.IMPORT_RULE) {\n            // if every @import has resolved, fake the load\n            fakeLoad = fakeLoad && Boolean(r.styleSheet);\n          }\n        }\n      }\n      // dispatch a fake load event and continue parsing\n      if (fakeLoad) {\n        elt.dispatchEvent(new CustomEvent('load', {bubbles: false}));\n      }\n    }\n  },\n  // NOTE: execute scripts by injecting them and watching for the load/error\n  // event. Inline scripts are handled via dataURL's because browsers tend to\n  // provide correct parsing errors in this case. If this has any compatibility\n  // issues, we can switch to injecting the inline script with textContent.\n  // Scripts with dataURL's do not appear to generate load events and therefore\n  // we assume they execute synchronously.\n  parseScript: function(scriptElt) {\n    var script = document.createElement('script');\n    script.__importElement = scriptElt;\n    script.src = scriptElt.src ? scriptElt.src : \n        generateScriptDataUrl(scriptElt);\n    scope.currentScript = scriptElt;\n    this.trackElement(script, function(e) {\n      script.parentNode.removeChild(script);\n      scope.currentScript = null;  \n    });\n    document.head.appendChild(script);\n  },\n  // determine the next element in the tree which should be parsed\n  nextToParse: function() {\n    return !this.parsingElement && this.nextToParseInDoc(mainDoc);\n  },\n  nextToParseInDoc: function(doc, link) {\n    var nodes = doc.querySelectorAll(this.parseSelectorsForNode(doc));\n    for (var i=0, l=nodes.length, p=0, n; (i<l) && (n=nodes[i]); i++) {\n      if (!this.isParsed(n)) {\n        if (this.hasResource(n)) {\n          return nodeIsImport(n) ? this.nextToParseInDoc(n.import, n) : n;\n        } else {\n          return;\n        }\n      }\n    }\n    // all nodes have been parsed, ready to parse import, if any\n    return link;\n  },\n  // return the set of parse selectors relevant for this node.\n  parseSelectorsForNode: function(node) {\n    var doc = node.ownerDocument || node;\n    return doc === mainDoc ? this.documentSelectors : this.importsSelectors;\n  },\n  isParsed: function(node) {\n    return node.__importParsed;\n  },\n  hasResource: function(node) {\n    if (nodeIsImport(node) && !node.import) {\n      return false;\n    }\n    return true;\n  }\n};\n\nfunction nodeIsImport(elt) {\n  return (elt.localName === 'link') && (elt.rel === IMPORT_LINK_TYPE);\n}\n\nfunction generateScriptDataUrl(script) {\n  var scriptContent = generateScriptContent(script), b64;\n  try {\n    b64 = btoa(scriptContent);\n  } catch(e) {\n    b64 = btoa(unescape(encodeURIComponent(scriptContent)));\n    console.warn('Script contained non-latin characters that were forced ' +\n      'to latin. Some characters may be wrong.', script);\n  }\n  return 'data:text/javascript;base64,' + b64;\n}\n\nfunction generateScriptContent(script) {\n  return script.textContent + generateSourceMapHint(script);\n}\n\n// calculate source map hint\nfunction generateSourceMapHint(script) {\n  var moniker = script.__nodeUrl;\n  if (!moniker) {\n    moniker = script.ownerDocument.baseURI;\n    // there could be more than one script this url\n    var tag = '[' + Math.floor((Math.random()+1)*1000) + ']';\n    // TODO(sjmiles): Polymer hack, should be pluggable if we need to allow \n    // this sort of thing\n    var matches = script.textContent.match(/Polymer\\(['\"]([^'\"]*)/);\n    tag = matches && matches[1] || tag;\n    // tag the moniker\n    moniker += '/' + tag + '.js';\n  }\n  return '\\n//# sourceURL=' + moniker + '\\n';\n}\n\n// style/stylesheet handling\n\n// clone style with proper path resolution for main document\n// NOTE: styles are the only elements that require direct path fixup.\nfunction cloneStyle(style) {\n  var clone = style.ownerDocument.createElement('style');\n  clone.textContent = style.textContent;\n  path.resolveUrlsInStyle(clone);\n  return clone;\n}\n\n// path fixup: style elements in imports must be made relative to the main \n// document. We fixup url's in url() and @import.\nvar CSS_URL_REGEXP = /(url\\()([^)]*)(\\))/g;\nvar CSS_IMPORT_REGEXP = /(@import[\\s]+(?!url\\())([^;]*)(;)/g;\n\nvar path = {\n  resolveUrlsInStyle: function(style) {\n    var doc = style.ownerDocument;\n    var resolver = doc.createElement('a');\n    style.textContent = this.resolveUrlsInCssText(style.textContent, resolver);\n    return style;  \n  },\n  resolveUrlsInCssText: function(cssText, urlObj) {\n    var r = this.replaceUrls(cssText, urlObj, CSS_URL_REGEXP);\n    r = this.replaceUrls(r, urlObj, CSS_IMPORT_REGEXP);\n    return r;\n  },\n  replaceUrls: function(text, urlObj, regexp) {\n    return text.replace(regexp, function(m, pre, url, post) {\n      var urlPath = url.replace(/[\"']/g, '');\n      urlObj.href = urlPath;\n      urlPath = urlObj.href;\n      return pre + '\\'' + urlPath + '\\'' + post;\n    });    \n  }\n}\n\n// exports\nscope.parser = importParser;\nscope.path = path;\nscope.isIE = isIe;\n\n})(HTMLImports);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(scope) {\n\nvar hasNative = ('import' in document.createElement('link'));\nvar useNative = hasNative;\nvar flags = scope.flags;\nvar IMPORT_LINK_TYPE = 'import';\n\n// TODO(sorvell): SD polyfill intrusion\nvar mainDoc = window.ShadowDOMPolyfill ? \n    ShadowDOMPolyfill.wrapIfNeeded(document) : document;\n\nif (!useNative) {\n\n  // imports\n  var xhr = scope.xhr;\n  var Loader = scope.Loader;\n  var parser = scope.parser;\n\n  // importer\n  // highlander object to manage loading of imports\n\n  // for any document, importer:\n  // - loads any linked import documents (with deduping)\n\n  var importer = {\n    documents: {},\n    // nodes to load in the mian document\n    documentPreloadSelectors: 'link[rel=' + IMPORT_LINK_TYPE + ']',\n    // nodes to load in imports\n    importsPreloadSelectors: [\n      'link[rel=' + IMPORT_LINK_TYPE + ']'\n    ].join(','),\n    loadNode: function(node) {\n      importLoader.addNode(node);\n    },\n    // load all loadable elements within the parent element\n    loadSubtree: function(parent) {\n      var nodes = this.marshalNodes(parent);\n      // add these nodes to loader's queue\n      importLoader.addNodes(nodes);\n    },\n    marshalNodes: function(parent) {\n      // all preloadable nodes in inDocument\n      return parent.querySelectorAll(this.loadSelectorsForNode(parent));\n    },\n    // find the proper set of load selectors for a given node\n    loadSelectorsForNode: function(node) {\n      var doc = node.ownerDocument || node;\n      return doc === mainDoc ? this.documentPreloadSelectors :\n          this.importsPreloadSelectors;\n    },\n    loaded: function(url, elt, resource) {\n      flags.load && console.log('loaded', url, elt);\n      // store generic resource\n      // TODO(sorvell): fails for nodes inside <template>.content\n      // see https://code.google.com/p/chromium/issues/detail?id=249381.\n      elt.__resource = resource;\n      if (isDocumentLink(elt)) {\n        var doc = this.documents[url];\n        // if we've never seen a document at this url\n        if (!doc) {\n          // generate an HTMLDocument from data\n          doc = makeDocument(resource, url);\n          doc.__importLink = elt;\n          // TODO(sorvell): we cannot use MO to detect parsed nodes because\n          // SD polyfill does not report these as mutations.\n          this.bootDocument(doc);\n          // cache document\n          this.documents[url] = doc;\n        }\n        // don't store import record until we're actually loaded\n        // store document resource\n        elt.import = doc;\n      }\n      parser.parseNext();\n    },\n    bootDocument: function(doc) {\n      this.loadSubtree(doc);\n      this.observe(doc);\n      parser.parseNext();\n    },\n    loadedAll: function() {\n      parser.parseNext();\n    }\n  };\n\n  // loader singleton\n  var importLoader = new Loader(importer.loaded.bind(importer), \n      importer.loadedAll.bind(importer));\n\n  function isDocumentLink(elt) {\n    return isLinkRel(elt, IMPORT_LINK_TYPE);\n  }\n\n  function isLinkRel(elt, rel) {\n    return elt.localName === 'link' && elt.getAttribute('rel') === rel;\n  }\n\n  function isScript(elt) {\n    return elt.localName === 'script';\n  }\n\n  function makeDocument(resource, url) {\n    // create a new HTML document\n    var doc = resource;\n    if (!(doc instanceof Document)) {\n      doc = document.implementation.createHTMLDocument(IMPORT_LINK_TYPE);\n    }\n    // cache the new document's source url\n    doc._URL = url;\n    // establish a relative path via <base>\n    var base = doc.createElement('base');\n    base.setAttribute('href', url);\n    // add baseURI support to browsers (IE) that lack it.\n    if (!doc.baseURI) {\n      doc.baseURI = url;\n    }\n    // ensure UTF-8 charset\n    var meta = doc.createElement('meta');\n    meta.setAttribute('charset', 'utf-8');\n\n    doc.head.appendChild(meta);\n    doc.head.appendChild(base);\n    // install HTML last as it may trigger CustomElement upgrades\n    // TODO(sjmiles): problem wrt to template boostrapping below,\n    // template bootstrapping must (?) come before element upgrade\n    // but we cannot bootstrap templates until they are in a document\n    // which is too late\n    if (!(resource instanceof Document)) {\n      // install html\n      doc.body.innerHTML = resource;\n    }\n    // TODO(sorvell): ideally this code is not aware of Template polyfill,\n    // but for now the polyfill needs help to bootstrap these templates\n    if (window.HTMLTemplateElement && HTMLTemplateElement.bootstrap) {\n      HTMLTemplateElement.bootstrap(doc);\n    }\n    return doc;\n  }\n} else {\n  // do nothing if using native imports\n  var importer = {};\n}\n\n// NOTE: We cannot polyfill document.currentScript because it's not possible\n// both to override and maintain the ability to capture the native value;\n// therefore we choose to expose _currentScript both when native imports\n// and the polyfill are in use.\nvar currentScriptDescriptor = {\n  get: function() {\n    return HTMLImports.currentScript || document.currentScript;\n  },\n  configurable: true\n};\n\nObject.defineProperty(document, '_currentScript', currentScriptDescriptor);\nObject.defineProperty(mainDoc, '_currentScript', currentScriptDescriptor);\n\n// Polyfill document.baseURI for browsers without it.\nif (!document.baseURI) {\n  var baseURIDescriptor = {\n    get: function() {\n      return window.location.href;\n    },\n    configurable: true\n  };\n\n  Object.defineProperty(document, 'baseURI', baseURIDescriptor);\n  Object.defineProperty(mainDoc, 'baseURI', baseURIDescriptor);\n}\n\n// call a callback when all HTMLImports in the document at call (or at least\n//  document ready) time have loaded.\n// 1. ensure the document is in a ready state (has dom), then \n// 2. watch for loading of imports and call callback when done\nfunction whenImportsReady(callback, doc) {\n  doc = doc || mainDoc;\n  // if document is loading, wait and try again\n  whenDocumentReady(function() {\n    watchImportsLoad(callback, doc);\n  }, doc);\n}\n\n// call the callback when the document is in a ready state (has dom)\nvar requiredReadyState = HTMLImports.isIE ? 'complete' : 'interactive';\nvar READY_EVENT = 'readystatechange';\nfunction isDocumentReady(doc) {\n  return (doc.readyState === 'complete' ||\n      doc.readyState === requiredReadyState);\n}\n\n// call <callback> when we ensure the document is in a ready state\nfunction whenDocumentReady(callback, doc) {\n  if (!isDocumentReady(doc)) {\n    var checkReady = function() {\n      if (doc.readyState === 'complete' || \n          doc.readyState === requiredReadyState) {\n        doc.removeEventListener(READY_EVENT, checkReady);\n        whenDocumentReady(callback, doc);\n      }\n    }\n    doc.addEventListener(READY_EVENT, checkReady);\n  } else if (callback) {\n    callback();\n  }\n}\n\n// call <callback> when we ensure all imports have loaded\nfunction watchImportsLoad(callback, doc) {\n  var imports = doc.querySelectorAll('link[rel=import]');\n  var loaded = 0, l = imports.length;\n  function checkDone(d) { \n    if (loaded == l) {\n      // go async to ensure parser isn't stuck on a script tag\n      requestAnimationFrame(callback);\n    }\n  }\n  function loadedImport(e) {\n    loaded++;\n    checkDone();\n  }\n  if (l) {\n    for (var i=0, imp; (i<l) && (imp=imports[i]); i++) {\n      if (isImportLoaded(imp)) {\n        loadedImport.call(imp);\n      } else {\n        imp.addEventListener('load', loadedImport);\n        imp.addEventListener('error', loadedImport);\n      }\n    }\n  } else {\n    checkDone();\n  }\n}\n\nfunction isImportLoaded(link) {\n  return useNative ? (link.import && (link.import.readyState !== 'loading')) :\n      link.__importParsed;\n}\n\n// exports\nscope.hasNative = hasNative;\nscope.useNative = useNative;\nscope.importer = importer;\nscope.whenImportsReady = whenImportsReady;\nscope.IMPORT_LINK_TYPE = IMPORT_LINK_TYPE;\nscope.isImportLoaded = isImportLoaded;\nscope.importLoader = importLoader;\n\n})(window.HTMLImports);\n"," /*\nCopyright 2013 The Polymer Authors. All rights reserved.\nUse of this source code is governed by a BSD-style\nlicense that can be found in the LICENSE file.\n*/\n\n(function(scope){\n\nvar IMPORT_LINK_TYPE = scope.IMPORT_LINK_TYPE;\nvar importSelector = 'link[rel=' + IMPORT_LINK_TYPE + ']';\nvar importer = scope.importer;\n\n// we track mutations for addedNodes, looking for imports\nfunction handler(mutations) {\n  for (var i=0, l=mutations.length, m; (i<l) && (m=mutations[i]); i++) {\n    if (m.type === 'childList' && m.addedNodes.length) {\n      addedNodes(m.addedNodes);\n    }\n  }\n}\n\n// find loadable elements and add them to the importer\nfunction addedNodes(nodes) {\n  for (var i=0, l=nodes.length, n; (i<l) && (n=nodes[i]); i++) {\n    if (shouldLoadNode(n)) {\n      importer.loadNode(n);\n    }\n    if (n.children && n.children.length) {\n      addedNodes(n.children);\n    }\n  }\n}\n\nfunction shouldLoadNode(node) {\n  return (node.nodeType === 1) && matches.call(node,\n      importer.loadSelectorsForNode(node));\n}\n\n// x-plat matches\nvar matches = HTMLElement.prototype.matches || \n    HTMLElement.prototype.matchesSelector || \n    HTMLElement.prototype.webkitMatchesSelector ||\n    HTMLElement.prototype.mozMatchesSelector ||\n    HTMLElement.prototype.msMatchesSelector;\n\nvar observer = new MutationObserver(handler);\n\n// observe the given root for loadable elements\nfunction observe(root) {\n  observer.observe(root, {childList: true, subtree: true});\n}\n\n// exports\n// TODO(sorvell): factor so can put on scope\nscope.observe = observe;\nimporter.observe = observe;\n\n})(HTMLImports);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(){\n\n// bootstrap\n\n// IE shim for CustomEvent\nif (typeof window.CustomEvent !== 'function') {\n  window.CustomEvent = function(inType, dictionary) {\n     var e = document.createEvent('HTMLEvents');\n     e.initEvent(inType,\n        dictionary.bubbles === false ? false : true,\n        dictionary.cancelable === false ? false : true,\n        dictionary.detail);\n     return e;\n  };\n}\n\n// TODO(sorvell): SD polyfill intrusion\nvar doc = window.ShadowDOMPolyfill ? \n    window.ShadowDOMPolyfill.wrapIfNeeded(document) : document;\n\n// Fire the 'HTMLImportsLoaded' event when imports in document at load time \n// have loaded. This event is required to simulate the script blocking \n// behavior of native imports. A main document script that needs to be sure\n// imports have loaded should wait for this event.\nHTMLImports.whenImportsReady(function() {\n  HTMLImports.ready = true;\n  HTMLImports.readyTime = new Date().getTime();\n  doc.dispatchEvent(\n    new CustomEvent('HTMLImportsLoaded', {bubbles: true})\n  );\n});\n\n\n// no need to bootstrap the polyfill when native imports is available.\nif (!HTMLImports.useNative) {\n  function bootstrap() {\n    HTMLImports.importer.bootDocument(doc);\n  }\n    \n  // TODO(sorvell): SD polyfill does *not* generate mutations for nodes added\n  // by the parser. For this reason, we must wait until the dom exists to \n  // bootstrap.\n  if (document.readyState === 'complete' ||\n      (document.readyState === 'interactive' && !window.attachEvent)) {\n    bootstrap();\n  } else {\n    document.addEventListener('DOMContentLoaded', bootstrap);\n  }\n}\n\n})();\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\nwindow.CustomElements = window.CustomElements || {flags:{}};"," /*\r\nCopyright 2013 The Polymer Authors. All rights reserved.\r\nUse of this source code is governed by a BSD-style\r\nlicense that can be found in the LICENSE file.\r\n*/\r\n\r\n(function(scope){\r\n\r\nvar logFlags = window.logFlags || {};\r\nvar IMPORT_LINK_TYPE = window.HTMLImports ? HTMLImports.IMPORT_LINK_TYPE : 'none';\r\n\r\n// walk the subtree rooted at node, applying 'find(element, data)' function\r\n// to each element\r\n// if 'find' returns true for 'element', do not search element's subtree\r\nfunction findAll(node, find, data) {\r\n  var e = node.firstElementChild;\r\n  if (!e) {\r\n    e = node.firstChild;\r\n    while (e && e.nodeType !== Node.ELEMENT_NODE) {\r\n      e = e.nextSibling;\r\n    }\r\n  }\r\n  while (e) {\r\n    if (find(e, data) !== true) {\r\n      findAll(e, find, data);\r\n    }\r\n    e = e.nextElementSibling;\r\n  }\r\n  return null;\r\n}\r\n\r\n// walk all shadowRoots on a given node.\r\nfunction forRoots(node, cb) {\r\n  var root = node.shadowRoot;\r\n  while(root) {\r\n    forSubtree(root, cb);\r\n    root = root.olderShadowRoot;\r\n  }\r\n}\r\n\r\n// walk the subtree rooted at node, including descent into shadow-roots,\r\n// applying 'cb' to each element\r\nfunction forSubtree(node, cb) {\r\n  //logFlags.dom && node.childNodes && node.childNodes.length && console.group('subTree: ', node);\r\n  findAll(node, function(e) {\r\n    if (cb(e)) {\r\n      return true;\r\n    }\r\n    forRoots(e, cb);\r\n  });\r\n  forRoots(node, cb);\r\n  //logFlags.dom && node.childNodes && node.childNodes.length && console.groupEnd();\r\n}\r\n\r\n// manage lifecycle on added node\r\nfunction added(node) {\r\n  if (upgrade(node)) {\r\n    insertedNode(node);\r\n    return true;\r\n  }\r\n  inserted(node);\r\n}\r\n\r\n// manage lifecycle on added node's subtree only\r\nfunction addedSubtree(node) {\r\n  forSubtree(node, function(e) {\r\n    if (added(e)) {\r\n      return true;\r\n    }\r\n  });\r\n}\r\n\r\n// manage lifecycle on added node and it's subtree\r\nfunction addedNode(node) {\r\n  return added(node) || addedSubtree(node);\r\n}\r\n\r\n// upgrade custom elements at node, if applicable\r\nfunction upgrade(node) {\r\n  if (!node.__upgraded__ && node.nodeType === Node.ELEMENT_NODE) {\r\n    var type = node.getAttribute('is') || node.localName;\r\n    var definition = scope.registry[type];\r\n    if (definition) {\r\n      logFlags.dom && console.group('upgrade:', node.localName);\r\n      scope.upgrade(node);\r\n      logFlags.dom && console.groupEnd();\r\n      return true;\r\n    }\r\n  }\r\n}\r\n\r\nfunction insertedNode(node) {\r\n  inserted(node);\r\n  if (inDocument(node)) {\r\n    forSubtree(node, function(e) {\r\n      inserted(e);\r\n    });\r\n  }\r\n}\r\n\r\n// TODO(sorvell): on platforms without MutationObserver, mutations may not be\r\n// reliable and therefore attached/detached are not reliable.\r\n// To make these callbacks less likely to fail, we defer all inserts and removes\r\n// to give a chance for elements to be inserted into dom.\r\n// This ensures attachedCallback fires for elements that are created and\r\n// immediately added to dom.\r\nvar hasPolyfillMutations = (!window.MutationObserver ||\r\n    (window.MutationObserver === window.JsMutationObserver));\r\nscope.hasPolyfillMutations = hasPolyfillMutations;\r\n\r\nvar isPendingMutations = false;\r\nvar pendingMutations = [];\r\nfunction deferMutation(fn) {\r\n  pendingMutations.push(fn);\r\n  if (!isPendingMutations) {\r\n    isPendingMutations = true;\r\n    var async = (window.Platform && window.Platform.endOfMicrotask) ||\r\n        setTimeout;\r\n    async(takeMutations);\r\n  }\r\n}\r\n\r\nfunction takeMutations() {\r\n  isPendingMutations = false;\r\n  var $p = pendingMutations;\r\n  for (var i=0, l=$p.length, p; (i<l) && (p=$p[i]); i++) {\r\n    p();\r\n  }\r\n  pendingMutations = [];\r\n}\r\n\r\nfunction inserted(element) {\r\n  if (hasPolyfillMutations) {\r\n    deferMutation(function() {\r\n      _inserted(element);\r\n    });\r\n  } else {\r\n    _inserted(element);\r\n  }\r\n}\r\n\r\n// TODO(sjmiles): if there are descents into trees that can never have inDocument(*) true, fix this\r\nfunction _inserted(element) {\r\n  // TODO(sjmiles): it's possible we were inserted and removed in the space\r\n  // of one microtask, in which case we won't be 'inDocument' here\r\n  // But there are other cases where we are testing for inserted without\r\n  // specific knowledge of mutations, and must test 'inDocument' to determine\r\n  // whether to call inserted\r\n  // If we can factor these cases into separate code paths we can have\r\n  // better diagnostics.\r\n  // TODO(sjmiles): when logging, do work on all custom elements so we can\r\n  // track behavior even when callbacks not defined\r\n  //console.log('inserted: ', element.localName);\r\n  if (element.attachedCallback || element.detachedCallback || (element.__upgraded__ && logFlags.dom)) {\r\n    logFlags.dom && console.group('inserted:', element.localName);\r\n    if (inDocument(element)) {\r\n      element.__inserted = (element.__inserted || 0) + 1;\r\n      // if we are in a 'removed' state, bluntly adjust to an 'inserted' state\r\n      if (element.__inserted < 1) {\r\n        element.__inserted = 1;\r\n      }\r\n      // if we are 'over inserted', squelch the callback\r\n      if (element.__inserted > 1) {\r\n        logFlags.dom && console.warn('inserted:', element.localName,\r\n          'insert/remove count:', element.__inserted)\r\n      } else if (element.attachedCallback) {\r\n        logFlags.dom && console.log('inserted:', element.localName);\r\n        element.attachedCallback();\r\n      }\r\n    }\r\n    logFlags.dom && console.groupEnd();\r\n  }\r\n}\r\n\r\nfunction removedNode(node) {\r\n  removed(node);\r\n  forSubtree(node, function(e) {\r\n    removed(e);\r\n  });\r\n}\r\n\r\nfunction removed(element) {\r\n  if (hasPolyfillMutations) {\r\n    deferMutation(function() {\r\n      _removed(element);\r\n    });\r\n  } else {\r\n    _removed(element);\r\n  }\r\n}\r\n\r\nfunction _removed(element) {\r\n  // TODO(sjmiles): temporary: do work on all custom elements so we can track\r\n  // behavior even when callbacks not defined\r\n  if (element.attachedCallback || element.detachedCallback || (element.__upgraded__ && logFlags.dom)) {\r\n    logFlags.dom && console.group('removed:', element.localName);\r\n    if (!inDocument(element)) {\r\n      element.__inserted = (element.__inserted || 0) - 1;\r\n      // if we are in a 'inserted' state, bluntly adjust to an 'removed' state\r\n      if (element.__inserted > 0) {\r\n        element.__inserted = 0;\r\n      }\r\n      // if we are 'over removed', squelch the callback\r\n      if (element.__inserted < 0) {\r\n        logFlags.dom && console.warn('removed:', element.localName,\r\n            'insert/remove count:', element.__inserted)\r\n      } else if (element.detachedCallback) {\r\n        element.detachedCallback();\r\n      }\r\n    }\r\n    logFlags.dom && console.groupEnd();\r\n  }\r\n}\r\n\r\n// SD polyfill intrustion due mainly to the fact that 'document'\r\n// is not entirely wrapped\r\nfunction wrapIfNeeded(node) {\r\n  return window.ShadowDOMPolyfill ? ShadowDOMPolyfill.wrapIfNeeded(node)\r\n      : node;\r\n}\r\n\r\nfunction inDocument(element) {\r\n  var p = element;\r\n  var doc = wrapIfNeeded(document);\r\n  while (p) {\r\n    if (p == doc) {\r\n      return true;\r\n    }\r\n    p = p.parentNode || p.host;\r\n  }\r\n}\r\n\r\nfunction watchShadow(node) {\r\n  if (node.shadowRoot && !node.shadowRoot.__watched) {\r\n    logFlags.dom && console.log('watching shadow-root for: ', node.localName);\r\n    // watch all unwatched roots...\r\n    var root = node.shadowRoot;\r\n    while (root) {\r\n      watchRoot(root);\r\n      root = root.olderShadowRoot;\r\n    }\r\n  }\r\n}\r\n\r\nfunction watchRoot(root) {\r\n  if (!root.__watched) {\r\n    observe(root);\r\n    root.__watched = true;\r\n  }\r\n}\r\n\r\nfunction handler(mutations) {\r\n  //\r\n  if (logFlags.dom) {\r\n    var mx = mutations[0];\r\n    if (mx && mx.type === 'childList' && mx.addedNodes) {\r\n        if (mx.addedNodes) {\r\n          var d = mx.addedNodes[0];\r\n          while (d && d !== document && !d.host) {\r\n            d = d.parentNode;\r\n          }\r\n          var u = d && (d.URL || d._URL || (d.host && d.host.localName)) || '';\r\n          u = u.split('/?').shift().split('/').pop();\r\n        }\r\n    }\r\n    console.group('mutations (%d) [%s]', mutations.length, u || '');\r\n  }\r\n  //\r\n  mutations.forEach(function(mx) {\r\n    //logFlags.dom && console.group('mutation');\r\n    if (mx.type === 'childList') {\r\n      forEach(mx.addedNodes, function(n) {\r\n        //logFlags.dom && console.log(n.localName);\r\n        if (!n.localName) {\r\n          return;\r\n        }\r\n        // nodes added may need lifecycle management\r\n        addedNode(n);\r\n      });\r\n      // removed nodes may need lifecycle management\r\n      forEach(mx.removedNodes, function(n) {\r\n        //logFlags.dom && console.log(n.localName);\r\n        if (!n.localName) {\r\n          return;\r\n        }\r\n        removedNode(n);\r\n      });\r\n    }\r\n    //logFlags.dom && console.groupEnd();\r\n  });\r\n  logFlags.dom && console.groupEnd();\r\n};\r\n\r\nvar observer = new MutationObserver(handler);\r\n\r\nfunction takeRecords() {\r\n  // TODO(sjmiles): ask Raf why we have to call handler ourselves\r\n  handler(observer.takeRecords());\r\n  takeMutations();\r\n}\r\n\r\nvar forEach = Array.prototype.forEach.call.bind(Array.prototype.forEach);\r\n\r\nfunction observe(inRoot) {\r\n  observer.observe(inRoot, {childList: true, subtree: true});\r\n}\r\n\r\nfunction observeDocument(doc) {\r\n  observe(doc);\r\n}\r\n\r\nfunction upgradeDocument(doc) {\r\n  logFlags.dom && console.group('upgradeDocument: ', (doc.baseURI).split('/').pop());\r\n  addedNode(doc);\r\n  logFlags.dom && console.groupEnd();\r\n}\r\n\r\nfunction upgradeDocumentTree(doc) {\r\n  doc = wrapIfNeeded(doc);\r\n  //console.log('upgradeDocumentTree: ', (doc.baseURI).split('/').pop());\r\n  // upgrade contained imported documents\r\n  var imports = doc.querySelectorAll('link[rel=' + IMPORT_LINK_TYPE + ']');\r\n  for (var i=0, l=imports.length, n; (i<l) && (n=imports[i]); i++) {\r\n    if (n.import && n.import.__parsed) {\r\n      upgradeDocumentTree(n.import);\r\n    }\r\n  }\r\n  upgradeDocument(doc);\r\n}\r\n\r\n// exports\r\nscope.IMPORT_LINK_TYPE = IMPORT_LINK_TYPE;\r\nscope.watchShadow = watchShadow;\r\nscope.upgradeDocumentTree = upgradeDocumentTree;\r\nscope.upgradeAll = addedNode;\r\nscope.upgradeSubtree = addedSubtree;\r\nscope.insertedNode = insertedNode;\r\n\r\nscope.observeDocument = observeDocument;\r\nscope.upgradeDocument = upgradeDocument;\r\n\r\nscope.takeRecords = takeRecords;\r\n\r\n})(window.CustomElements);\r\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n/**\n * Implements `document.register`\n * @module CustomElements\n*/\n\n/**\n * Polyfilled extensions to the `document` object.\n * @class Document\n*/\n\n(function(scope) {\n\n// imports\n\nif (!scope) {\n  scope = window.CustomElements = {flags:{}};\n}\nvar flags = scope.flags;\n\n// native document.registerElement?\n\nvar hasNative = Boolean(document.registerElement);\n// TODO(sorvell): See https://github.com/Polymer/polymer/issues/399\n// we'll address this by defaulting to CE polyfill in the presence of the SD\n// polyfill. This will avoid spamming excess attached/detached callbacks.\n// If there is a compelling need to run CE native with SD polyfill,\n// we'll need to fix this issue.\nvar useNative = !flags.register && hasNative && !window.ShadowDOMPolyfill;\n\nif (useNative) {\n\n  // stub\n  var nop = function() {};\n\n  // exports\n  scope.registry = {};\n  scope.upgradeElement = nop;\n\n  scope.watchShadow = nop;\n  scope.upgrade = nop;\n  scope.upgradeAll = nop;\n  scope.upgradeSubtree = nop;\n  scope.observeDocument = nop;\n  scope.upgradeDocument = nop;\n  scope.upgradeDocumentTree = nop;\n  scope.takeRecords = nop;\n  scope.reservedTagList = [];\n\n} else {\n\n  /**\n   * Registers a custom tag name with the document.\n   *\n   * When a registered element is created, a `readyCallback` method is called\n   * in the scope of the element. The `readyCallback` method can be specified on\n   * either `options.prototype` or `options.lifecycle` with the latter taking\n   * precedence.\n   *\n   * @method register\n   * @param {String} name The tag name to register. Must include a dash ('-'),\n   *    for example 'x-component'.\n   * @param {Object} options\n   *    @param {String} [options.extends]\n   *      (_off spec_) Tag name of an element to extend (or blank for a new\n   *      element). This parameter is not part of the specification, but instead\n   *      is a hint for the polyfill because the extendee is difficult to infer.\n   *      Remember that the input prototype must chain to the extended element's\n   *      prototype (or HTMLElement.prototype) regardless of the value of\n   *      `extends`.\n   *    @param {Object} options.prototype The prototype to use for the new\n   *      element. The prototype must inherit from HTMLElement.\n   *    @param {Object} [options.lifecycle]\n   *      Callbacks that fire at important phases in the life of the custom\n   *      element.\n   *\n   * @example\n   *      FancyButton = document.registerElement(\"fancy-button\", {\n   *        extends: 'button',\n   *        prototype: Object.create(HTMLButtonElement.prototype, {\n   *          readyCallback: {\n   *            value: function() {\n   *              console.log(\"a fancy-button was created\",\n   *            }\n   *          }\n   *        })\n   *      });\n   * @return {Function} Constructor for the newly registered type.\n   */\n  function register(name, options) {\n    //console.warn('document.registerElement(\"' + name + '\", ', options, ')');\n    // construct a defintion out of options\n    // TODO(sjmiles): probably should clone options instead of mutating it\n    var definition = options || {};\n    if (!name) {\n      // TODO(sjmiles): replace with more appropriate error (EricB can probably\n      // offer guidance)\n      throw new Error('document.registerElement: first argument `name` must not be empty');\n    }\n    if (name.indexOf('-') < 0) {\n      // TODO(sjmiles): replace with more appropriate error (EricB can probably\n      // offer guidance)\n      throw new Error('document.registerElement: first argument (\\'name\\') must contain a dash (\\'-\\'). Argument provided was \\'' + String(name) + '\\'.');\n    }\n    // prevent registering reserved names\n    if (isReservedTag(name)) {\n      throw new Error('Failed to execute \\'registerElement\\' on \\'Document\\': Registration failed for type \\'' + String(name) + '\\'. The type name is invalid.');\n    }\n    // elements may only be registered once\n    if (getRegisteredDefinition(name)) {\n      throw new Error('DuplicateDefinitionError: a type with name \\'' + String(name) + '\\' is already registered');\n    }\n    // must have a prototype, default to an extension of HTMLElement\n    // TODO(sjmiles): probably should throw if no prototype, check spec\n    if (!definition.prototype) {\n      // TODO(sjmiles): replace with more appropriate error (EricB can probably\n      // offer guidance)\n      throw new Error('Options missing required prototype property');\n    }\n    // record name\n    definition.__name = name.toLowerCase();\n    // ensure a lifecycle object so we don't have to null test it\n    definition.lifecycle = definition.lifecycle || {};\n    // build a list of ancestral custom elements (for native base detection)\n    // TODO(sjmiles): we used to need to store this, but current code only\n    // uses it in 'resolveTagName': it should probably be inlined\n    definition.ancestry = ancestry(definition.extends);\n    // extensions of native specializations of HTMLElement require localName\n    // to remain native, and use secondary 'is' specifier for extension type\n    resolveTagName(definition);\n    // some platforms require modifications to the user-supplied prototype\n    // chain\n    resolvePrototypeChain(definition);\n    // overrides to implement attributeChanged callback\n    overrideAttributeApi(definition.prototype);\n    // 7.1.5: Register the DEFINITION with DOCUMENT\n    registerDefinition(definition.__name, definition);\n    // 7.1.7. Run custom element constructor generation algorithm with PROTOTYPE\n    // 7.1.8. Return the output of the previous step.\n    definition.ctor = generateConstructor(definition);\n    definition.ctor.prototype = definition.prototype;\n    // force our .constructor to be our actual constructor\n    definition.prototype.constructor = definition.ctor;\n    // if initial parsing is complete\n    if (scope.ready) {\n      // upgrade any pre-existing nodes of this type\n      scope.upgradeDocumentTree(document);\n    }\n    return definition.ctor;\n  }\n\n  function isReservedTag(name) {\n    for (var i = 0; i < reservedTagList.length; i++) {\n      if (name === reservedTagList[i]) {\n        return true;\n      }\n    }\n  }\n\n  var reservedTagList = [\n    'annotation-xml', 'color-profile', 'font-face', 'font-face-src',\n    'font-face-uri', 'font-face-format', 'font-face-name', 'missing-glyph'\n  ];\n\n  function ancestry(extnds) {\n    var extendee = getRegisteredDefinition(extnds);\n    if (extendee) {\n      return ancestry(extendee.extends).concat([extendee]);\n    }\n    return [];\n  }\n\n  function resolveTagName(definition) {\n    // if we are explicitly extending something, that thing is our\n    // baseTag, unless it represents a custom component\n    var baseTag = definition.extends;\n    // if our ancestry includes custom components, we only have a\n    // baseTag if one of them does\n    for (var i=0, a; (a=definition.ancestry[i]); i++) {\n      baseTag = a.is && a.tag;\n    }\n    // our tag is our baseTag, if it exists, and otherwise just our name\n    definition.tag = baseTag || definition.__name;\n    if (baseTag) {\n      // if there is a base tag, use secondary 'is' specifier\n      definition.is = definition.__name;\n    }\n  }\n\n  function resolvePrototypeChain(definition) {\n    // if we don't support __proto__ we need to locate the native level\n    // prototype for precise mixing in\n    if (!Object.__proto__) {\n      // default prototype\n      var nativePrototype = HTMLElement.prototype;\n      // work out prototype when using type-extension\n      if (definition.is) {\n        var inst = document.createElement(definition.tag);\n        nativePrototype = Object.getPrototypeOf(inst);\n      }\n      // ensure __proto__ reference is installed at each point on the prototype\n      // chain.\n      // NOTE: On platforms without __proto__, a mixin strategy is used instead\n      // of prototype swizzling. In this case, this generated __proto__ provides\n      // limited support for prototype traversal.\n      var proto = definition.prototype, ancestor;\n      while (proto && (proto !== nativePrototype)) {\n        var ancestor = Object.getPrototypeOf(proto);\n        proto.__proto__ = ancestor;\n        proto = ancestor;\n      }\n    }\n    // cache this in case of mixin\n    definition.native = nativePrototype;\n  }\n\n  // SECTION 4\n\n  function instantiate(definition) {\n    // 4.a.1. Create a new object that implements PROTOTYPE\n    // 4.a.2. Let ELEMENT by this new object\n    //\n    // the custom element instantiation algorithm must also ensure that the\n    // output is a valid DOM element with the proper wrapper in place.\n    //\n    return upgrade(domCreateElement(definition.tag), definition);\n  }\n\n  function upgrade(element, definition) {\n    // some definitions specify an 'is' attribute\n    if (definition.is) {\n      element.setAttribute('is', definition.is);\n    }\n    // remove 'unresolved' attr, which is a standin for :unresolved.\n    element.removeAttribute('unresolved');\n    // make 'element' implement definition.prototype\n    implement(element, definition);\n    // flag as upgraded\n    element.__upgraded__ = true;\n    // lifecycle management\n    created(element);\n    // attachedCallback fires in tree order, call before recursing\n    scope.insertedNode(element);\n    // there should never be a shadow root on element at this point\n    scope.upgradeSubtree(element);\n    // OUTPUT\n    return element;\n  }\n\n  function implement(element, definition) {\n    // prototype swizzling is best\n    if (Object.__proto__) {\n      element.__proto__ = definition.prototype;\n    } else {\n      // where above we can re-acquire inPrototype via\n      // getPrototypeOf(Element), we cannot do so when\n      // we use mixin, so we install a magic reference\n      customMixin(element, definition.prototype, definition.native);\n      element.__proto__ = definition.prototype;\n    }\n  }\n\n  function customMixin(inTarget, inSrc, inNative) {\n    // TODO(sjmiles): 'used' allows us to only copy the 'youngest' version of\n    // any property. This set should be precalculated. We also need to\n    // consider this for supporting 'super'.\n    var used = {};\n    // start with inSrc\n    var p = inSrc;\n    // The default is HTMLElement.prototype, so we add a test to avoid mixing in\n    // native prototypes\n    while (p !== inNative && p !== HTMLElement.prototype) {\n      var keys = Object.getOwnPropertyNames(p);\n      for (var i=0, k; k=keys[i]; i++) {\n        if (!used[k]) {\n          Object.defineProperty(inTarget, k,\n              Object.getOwnPropertyDescriptor(p, k));\n          used[k] = 1;\n        }\n      }\n      p = Object.getPrototypeOf(p);\n    }\n  }\n\n  function created(element) {\n    // invoke createdCallback\n    if (element.createdCallback) {\n      element.createdCallback();\n    }\n  }\n\n  // attribute watching\n\n  function overrideAttributeApi(prototype) {\n    // overrides to implement callbacks\n    // TODO(sjmiles): should support access via .attributes NamedNodeMap\n    // TODO(sjmiles): preserves user defined overrides, if any\n    if (prototype.setAttribute._polyfilled) {\n      return;\n    }\n    var setAttribute = prototype.setAttribute;\n    prototype.setAttribute = function(name, value) {\n      changeAttribute.call(this, name, value, setAttribute);\n    }\n    var removeAttribute = prototype.removeAttribute;\n    prototype.removeAttribute = function(name) {\n      changeAttribute.call(this, name, null, removeAttribute);\n    }\n    prototype.setAttribute._polyfilled = true;\n  }\n\n  // https://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/custom/\n  // index.html#dfn-attribute-changed-callback\n  function changeAttribute(name, value, operation) {\n    var oldValue = this.getAttribute(name);\n    operation.apply(this, arguments);\n    var newValue = this.getAttribute(name);\n    if (this.attributeChangedCallback\n        && (newValue !== oldValue)) {\n      this.attributeChangedCallback(name, oldValue, newValue);\n    }\n  }\n\n  // element registry (maps tag names to definitions)\n\n  var registry = {};\n\n  function getRegisteredDefinition(name) {\n    if (name) {\n      return registry[name.toLowerCase()];\n    }\n  }\n\n  function registerDefinition(name, definition) {\n    registry[name] = definition;\n  }\n\n  function generateConstructor(definition) {\n    return function() {\n      return instantiate(definition);\n    };\n  }\n\n  var HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';\n  function createElementNS(namespace, tag, typeExtension) {\n    // NOTE: we do not support non-HTML elements,\n    // just call createElementNS for non HTML Elements\n    if (namespace === HTML_NAMESPACE) {\n      return createElement(tag, typeExtension);\n    } else {\n      return domCreateElementNS(namespace, tag);\n    }\n  }\n\n  function createElement(tag, typeExtension) {\n    // TODO(sjmiles): ignore 'tag' when using 'typeExtension', we could\n    // error check it, or perhaps there should only ever be one argument\n    var definition = getRegisteredDefinition(typeExtension || tag);\n    if (definition) {\n      if (tag == definition.tag && typeExtension == definition.is) {\n        return new definition.ctor();\n      }\n      // Handle empty string for type extension.\n      if (!typeExtension && !definition.is) {\n        return new definition.ctor();\n      }\n    }\n\n    if (typeExtension) {\n      var element = createElement(tag);\n      element.setAttribute('is', typeExtension);\n      return element;\n    }\n    var element = domCreateElement(tag);\n    // Custom tags should be HTMLElements even if not upgraded.\n    if (tag.indexOf('-') >= 0) {\n      implement(element, HTMLElement);\n    }\n    return element;\n  }\n\n  function upgradeElement(element) {\n    if (!element.__upgraded__ && (element.nodeType === Node.ELEMENT_NODE)) {\n      var is = element.getAttribute('is');\n      var definition = getRegisteredDefinition(is || element.localName);\n      if (definition) {\n        if (is && definition.tag == element.localName) {\n          return upgrade(element, definition);\n        } else if (!is && !definition.extends) {\n          return upgrade(element, definition);\n        }\n      }\n    }\n  }\n\n  function cloneNode(deep) {\n    // call original clone\n    var n = domCloneNode.call(this, deep);\n    // upgrade the element and subtree\n    scope.upgradeAll(n);\n    // return the clone\n    return n;\n  }\n  // capture native createElement before we override it\n\n  var domCreateElement = document.createElement.bind(document);\n  var domCreateElementNS = document.createElementNS.bind(document);\n\n  // capture native cloneNode before we override it\n\n  var domCloneNode = Node.prototype.cloneNode;\n\n  // exports\n\n  document.registerElement = register;\n  document.createElement = createElement; // override\n  document.createElementNS = createElementNS; // override\n  Node.prototype.cloneNode = cloneNode; // override\n\n  scope.registry = registry;\n\n  /**\n   * Upgrade an element to a custom element. Upgrading an element\n   * causes the custom prototype to be applied, an `is` attribute\n   * to be attached (as needed), and invocation of the `readyCallback`.\n   * `upgrade` does nothing if the element is already upgraded, or\n   * if it matches no registered custom tag name.\n   *\n   * @method ugprade\n   * @param {Element} element The element to upgrade.\n   * @return {Element} The upgraded element.\n   */\n  scope.upgrade = upgradeElement;\n}\n\n// Create a custom 'instanceof'. This is necessary when CustomElements\n// are implemented via a mixin strategy, as for example on IE10.\nvar isInstance;\nif (!Object.__proto__ && !useNative) {\n  isInstance = function(obj, ctor) {\n    var p = obj;\n    while (p) {\n      // NOTE: this is not technically correct since we're not checking if\n      // an object is an instance of a constructor; however, this should\n      // be good enough for the mixin strategy.\n      if (p === ctor.prototype) {\n        return true;\n      }\n      p = p.__proto__;\n    }\n    return false;\n  }\n} else {\n  isInstance = function(obj, base) {\n    return obj instanceof base;\n  }\n}\n\n// exports\nscope.instanceof = isInstance;\nscope.reservedTagList = reservedTagList;\n\n// bc\ndocument.register = document.registerElement;\n\nscope.hasNative = hasNative;\nscope.useNative = useNative;\n\n})(window.CustomElements);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(scope) {\n\n// import\n\nvar IMPORT_LINK_TYPE = scope.IMPORT_LINK_TYPE;\n\n// highlander object for parsing a document tree\n\nvar parser = {\n  selectors: [\n    'link[rel=' + IMPORT_LINK_TYPE + ']'\n  ],\n  map: {\n    link: 'parseLink'\n  },\n  parse: function(inDocument) {\n    if (!inDocument.__parsed) {\n      // only parse once\n      inDocument.__parsed = true;\n      // all parsable elements in inDocument (depth-first pre-order traversal)\n      var elts = inDocument.querySelectorAll(parser.selectors);\n      // for each parsable node type, call the mapped parsing method\n      forEach(elts, function(e) {\n        parser[parser.map[e.localName]](e);\n      });\n      // upgrade all upgradeable static elements, anything dynamically\n      // created should be caught by observer\n      CustomElements.upgradeDocument(inDocument);\n      // observe document for dom changes\n      CustomElements.observeDocument(inDocument);\n    }\n  },\n  parseLink: function(linkElt) {\n    // imports\n    if (isDocumentLink(linkElt)) {\n      this.parseImport(linkElt);\n    }\n  },\n  parseImport: function(linkElt) {\n    if (linkElt.import) {\n      parser.parse(linkElt.import);\n    }\n  }\n};\n\nfunction isDocumentLink(inElt) {\n  return (inElt.localName === 'link'\n      && inElt.getAttribute('rel') === IMPORT_LINK_TYPE);\n}\n\nvar forEach = Array.prototype.forEach.call.bind(Array.prototype.forEach);\n\n// exports\n\nscope.parser = parser;\nscope.IMPORT_LINK_TYPE = IMPORT_LINK_TYPE;\n\n})(window.CustomElements);","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(scope){\n\n// bootstrap parsing\nfunction bootstrap() {\n  // parse document\n  CustomElements.parser.parse(document);\n  // one more pass before register is 'live'\n  CustomElements.upgradeDocument(document);\n  // choose async\n  var async = window.Platform && Platform.endOfMicrotask ? \n    Platform.endOfMicrotask :\n    setTimeout;\n  async(function() {\n    // set internal 'ready' flag, now document.registerElement will trigger \n    // synchronous upgrades\n    CustomElements.ready = true;\n    // capture blunt profiling data\n    CustomElements.readyTime = Date.now();\n    if (window.HTMLImports) {\n      CustomElements.elapsed = CustomElements.readyTime - HTMLImports.readyTime;\n    }\n    // notify the system that we are bootstrapped\n    document.dispatchEvent(\n      new CustomEvent('WebComponentsReady', {bubbles: true})\n    );\n\n    // install upgrade hook if HTMLImports are available\n    if (window.HTMLImports) {\n      HTMLImports.__importsParsingHook = function(elt) {\n        CustomElements.parser.parse(elt.import);\n      }\n    }\n  });\n}\n\n// CustomEvent shim for IE\nif (typeof window.CustomEvent !== 'function') {\n  window.CustomEvent = function(inType) {\n    var e = document.createEvent('HTMLEvents');\n    e.initEvent(inType, true, true);\n    return e;\n  };\n}\n\n// When loading at readyState complete time (or via flag), boot custom elements\n// immediately.\n// If relevant, HTMLImports must already be loaded.\nif (document.readyState === 'complete' || scope.flags.eager) {\n  bootstrap();\n// When loading at readyState interactive time, bootstrap only if HTMLImports\n// are not pending. Also avoid IE as the semantics of this state are unreliable.\n} else if (document.readyState === 'interactive' && !window.attachEvent &&\n    (!window.HTMLImports || window.HTMLImports.ready)) {\n  bootstrap();\n// When loading at other readyStates, wait for the appropriate DOM event to \n// bootstrap.\n} else {\n  var loadEvent = window.HTMLImports && !HTMLImports.ready ?\n      'HTMLImportsLoaded' : 'DOMContentLoaded';\n  window.addEventListener(loadEvent, bootstrap);\n}\n\n})(window.CustomElements);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function() {\n\nif (window.ShadowDOMPolyfill) {\n\n  // ensure wrapped inputs for these functions\n  var fns = ['upgradeAll', 'upgradeSubtree', 'observeDocument',\n      'upgradeDocument'];\n\n  // cache originals\n  var original = {};\n  fns.forEach(function(fn) {\n    original[fn] = CustomElements[fn];\n  });\n\n  // override\n  fns.forEach(function(fn) {\n    CustomElements[fn] = function(inNode) {\n      return original[fn](wrap(inNode));\n    };\n  });\n\n}\n\n})();\n","/*\n * Copyright 2014 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(scope) {\n  var endOfMicrotask = scope.endOfMicrotask;\n\n  // Generic url loader\n  function Loader(regex) {\n    this.regex = regex;\n  }\n  Loader.prototype = {\n    // TODO(dfreedm): there may be a better factoring here\n    // extract absolute urls from the text (full of relative urls)\n    extractUrls: function(text, base) {\n      var matches = [];\n      var matched, u;\n      while ((matched = this.regex.exec(text))) {\n        u = new URL(matched[1], base);\n        matches.push({matched: matched[0], url: u.href});\n      }\n      return matches;\n    },\n    // take a text blob, a root url, and a callback and load all the urls found within the text\n    // returns a map of absolute url to text\n    process: function(text, root, callback) {\n      var matches = this.extractUrls(text, root);\n      this.fetch(matches, {}, callback);\n    },\n    // build a mapping of url -> text from matches\n    fetch: function(matches, map, callback) {\n      var inflight = matches.length;\n\n      // return early if there is no fetching to be done\n      if (!inflight) {\n        return callback(map);\n      }\n\n      var done = function() {\n        if (--inflight === 0) {\n          callback(map);\n        }\n      };\n\n      // map url -> responseText\n      var handleXhr = function(err, request) {\n        var match = request.match;\n        var key = match.url;\n        // handle errors with an empty string\n        if (err) {\n          map[key] = '';\n          return done();\n        }\n        var response = request.response || request.responseText;\n        map[key] = response;\n        this.fetch(this.extractUrls(response, key), map, done);\n      };\n\n      var m, req, url;\n      for (var i = 0; i < inflight; i++) {\n        m = matches[i];\n        url = m.url;\n        // if this url has already been requested, skip requesting it again\n        if (map[url]) {\n          // Async call to done to simplify the inflight logic\n          endOfMicrotask(done);\n          continue;\n        }\n        req = this.xhr(url, handleXhr, this);\n        req.match = m;\n        // tag the map with an XHR request to deduplicate at the same level\n        map[url] = req;\n      }\n    },\n    xhr: function(url, callback, scope) {\n      var request = new XMLHttpRequest();\n      request.open('GET', url, true);\n      request.send();\n      request.onload = function() {\n        callback.call(scope, null, request);\n      };\n      request.onerror = function() {\n        callback.call(scope, null, request);\n      };\n      return request;\n    }\n  };\n\n  scope.Loader = Loader;\n})(window.Platform);\n","/*\n * Copyright 2014 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(scope) {\n\nvar urlResolver = scope.urlResolver;\nvar Loader = scope.Loader;\n\nfunction StyleResolver() {\n  this.loader = new Loader(this.regex);\n}\nStyleResolver.prototype = {\n  regex: /@import\\s+(?:url)?[\"'\\(]*([^'\"\\)]*)['\"\\)]*;/g,\n  // Recursively replace @imports with the text at that url\n  resolve: function(text, url, callback) {\n    var done = function(map) {\n      callback(this.flatten(text, url, map));\n    }.bind(this);\n    this.loader.process(text, url, done);\n  },\n  // resolve the textContent of a style node\n  resolveNode: function(style, callback) {\n    var text = style.textContent;\n    var url = style.ownerDocument.baseURI;\n    var done = function(text) {\n      style.textContent = text;\n      callback(style);\n    };\n    this.resolve(text, url, done);\n  },\n  // flatten all the @imports to text\n  flatten: function(text, base, map) {\n    var matches = this.loader.extractUrls(text, base);\n    var match, url, intermediate;\n    for (var i = 0; i < matches.length; i++) {\n      match = matches[i];\n      url = match.url;\n      // resolve any css text to be relative to the importer\n      intermediate = urlResolver.resolveCssText(map[url], url);\n      // flatten intermediate @imports\n      intermediate = this.flatten(intermediate, base, map);\n      text = text.replace(match.matched, intermediate);\n    }\n    return text;\n  },\n  loadStyles: function(styles, callback) {\n    var loaded=0, l = styles.length;\n    // called in the context of the style\n    function loadedStyle(style) {\n      loaded++;\n      if (loaded === l && callback) {\n        callback();\n      }\n    }\n    for (var i=0, s; (i<l) && (s=styles[i]); i++) {\n      this.resolveNode(s, loadedStyle);\n    }\n  }\n};\n\nvar styleResolver = new StyleResolver();\n\n// exports\nscope.styleResolver = styleResolver;\n\n})(window.Platform);\n","// Copyright (c) 2014 The Polymer Project Authors. All rights reserved.\n// This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\n// The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\n// The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\n// Code distributed by Google as part of the polymer project is also\n// subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n\n(function(global) {\n  'use strict';\n\n  var filter = Array.prototype.filter.call.bind(Array.prototype.filter);\n\n  function getTreeScope(node) {\n    while (node.parentNode) {\n      node = node.parentNode;\n    }\n\n    return typeof node.getElementById === 'function' ? node : null;\n  }\n\n  Node.prototype.bind = function(name, observable) {\n    console.error('Unhandled binding to Node: ', this, name, observable);\n  };\n\n  Node.prototype.bindFinished = function() {};\n\n  function updateBindings(node, name, binding) {\n    var bindings = node.bindings_;\n    if (!bindings)\n      bindings = node.bindings_ = {};\n\n    if (bindings[name])\n      binding[name].close();\n\n    return bindings[name] = binding;\n  }\n\n  function returnBinding(node, name, binding) {\n    return binding;\n  }\n\n  function sanitizeValue(value) {\n    return value == null ? '' : value;\n  }\n\n  function updateText(node, value) {\n    node.data = sanitizeValue(value);\n  }\n\n  function textBinding(node) {\n    return function(value) {\n      return updateText(node, value);\n    };\n  }\n\n  var maybeUpdateBindings = returnBinding;\n\n  Object.defineProperty(Platform, 'enableBindingsReflection', {\n    get: function() {\n      return maybeUpdateBindings === updateBindings;\n    },\n    set: function(enable) {\n      maybeUpdateBindings = enable ? updateBindings : returnBinding;\n      return enable;\n    },\n    configurable: true\n  });\n\n  Text.prototype.bind = function(name, value, oneTime) {\n    if (name !== 'textContent')\n      return Node.prototype.bind.call(this, name, value, oneTime);\n\n    if (oneTime)\n      return updateText(this, value);\n\n    var observable = value;\n    updateText(this, observable.open(textBinding(this)));\n    return maybeUpdateBindings(this, name, observable);\n  }\n\n  function updateAttribute(el, name, conditional, value) {\n    if (conditional) {\n      if (value)\n        el.setAttribute(name, '');\n      else\n        el.removeAttribute(name);\n      return;\n    }\n\n    el.setAttribute(name, sanitizeValue(value));\n  }\n\n  function attributeBinding(el, name, conditional) {\n    return function(value) {\n      updateAttribute(el, name, conditional, value);\n    };\n  }\n\n  Element.prototype.bind = function(name, value, oneTime) {\n    var conditional = name[name.length - 1] == '?';\n    if (conditional) {\n      this.removeAttribute(name);\n      name = name.slice(0, -1);\n    }\n\n    if (oneTime)\n      return updateAttribute(this, name, conditional, value);\n\n\n    var observable = value;\n    updateAttribute(this, name, conditional,\n        observable.open(attributeBinding(this, name, conditional)));\n\n    return maybeUpdateBindings(this, name, observable);\n  };\n\n  var checkboxEventType;\n  (function() {\n    // Attempt to feature-detect which event (change or click) is fired first\n    // for checkboxes.\n    var div = document.createElement('div');\n    var checkbox = div.appendChild(document.createElement('input'));\n    checkbox.setAttribute('type', 'checkbox');\n    var first;\n    var count = 0;\n    checkbox.addEventListener('click', function(e) {\n      count++;\n      first = first || 'click';\n    });\n    checkbox.addEventListener('change', function() {\n      count++;\n      first = first || 'change';\n    });\n\n    var event = document.createEvent('MouseEvent');\n    event.initMouseEvent(\"click\", true, true, window, 0, 0, 0, 0, 0, false,\n        false, false, false, 0, null);\n    checkbox.dispatchEvent(event);\n    // WebKit/Blink don't fire the change event if the element is outside the\n    // document, so assume 'change' for that case.\n    checkboxEventType = count == 1 ? 'change' : first;\n  })();\n\n  function getEventForInputType(element) {\n    switch (element.type) {\n      case 'checkbox':\n        return checkboxEventType;\n      case 'radio':\n      case 'select-multiple':\n      case 'select-one':\n        return 'change';\n      case 'range':\n        if (/Trident|MSIE/.test(navigator.userAgent))\n          return 'change';\n      default:\n        return 'input';\n    }\n  }\n\n  function updateInput(input, property, value, santizeFn) {\n    input[property] = (santizeFn || sanitizeValue)(value);\n  }\n\n  function inputBinding(input, property, santizeFn) {\n    return function(value) {\n      return updateInput(input, property, value, santizeFn);\n    }\n  }\n\n  function noop() {}\n\n  function bindInputEvent(input, property, observable, postEventFn) {\n    var eventType = getEventForInputType(input);\n\n    function eventHandler() {\n      observable.setValue(input[property]);\n      observable.discardChanges();\n      (postEventFn || noop)(input);\n      Platform.performMicrotaskCheckpoint();\n    }\n    input.addEventListener(eventType, eventHandler);\n\n    return {\n      close: function() {\n        input.removeEventListener(eventType, eventHandler);\n        observable.close();\n      },\n\n      observable_: observable\n    }\n  }\n\n  function booleanSanitize(value) {\n    return Boolean(value);\n  }\n\n  // |element| is assumed to be an HTMLInputElement with |type| == 'radio'.\n  // Returns an array containing all radio buttons other than |element| that\n  // have the same |name|, either in the form that |element| belongs to or,\n  // if no form, in the document tree to which |element| belongs.\n  //\n  // This implementation is based upon the HTML spec definition of a\n  // \"radio button group\":\n  //   http://www.whatwg.org/specs/web-apps/current-work/multipage/number-state.html#radio-button-group\n  //\n  function getAssociatedRadioButtons(element) {\n    if (element.form) {\n      return filter(element.form.elements, function(el) {\n        return el != element &&\n            el.tagName == 'INPUT' &&\n            el.type == 'radio' &&\n            el.name == element.name;\n      });\n    } else {\n      var treeScope = getTreeScope(element);\n      if (!treeScope)\n        return [];\n      var radios = treeScope.querySelectorAll(\n          'input[type=\"radio\"][name=\"' + element.name + '\"]');\n      return filter(radios, function(el) {\n        return el != element && !el.form;\n      });\n    }\n  }\n\n  function checkedPostEvent(input) {\n    // Only the radio button that is getting checked gets an event. We\n    // therefore find all the associated radio buttons and update their\n    // check binding manually.\n    if (input.tagName === 'INPUT' &&\n        input.type === 'radio') {\n      getAssociatedRadioButtons(input).forEach(function(radio) {\n        var checkedBinding = radio.bindings_.checked;\n        if (checkedBinding) {\n          // Set the value directly to avoid an infinite call stack.\n          checkedBinding.observable_.setValue(false);\n        }\n      });\n    }\n  }\n\n  HTMLInputElement.prototype.bind = function(name, value, oneTime) {\n    if (name !== 'value' && name !== 'checked')\n      return HTMLElement.prototype.bind.call(this, name, value, oneTime);\n\n    this.removeAttribute(name);\n    var sanitizeFn = name == 'checked' ? booleanSanitize : sanitizeValue;\n    var postEventFn = name == 'checked' ? checkedPostEvent : noop;\n\n    if (oneTime)\n      return updateInput(this, name, value, sanitizeFn);\n\n\n    var observable = value;\n    var binding = bindInputEvent(this, name, observable, postEventFn);\n    updateInput(this, name,\n                observable.open(inputBinding(this, name, sanitizeFn)),\n                sanitizeFn);\n\n    // Checkboxes may need to update bindings of other checkboxes.\n    return updateBindings(this, name, binding);\n  }\n\n  HTMLTextAreaElement.prototype.bind = function(name, value, oneTime) {\n    if (name !== 'value')\n      return HTMLElement.prototype.bind.call(this, name, value, oneTime);\n\n    this.removeAttribute('value');\n\n    if (oneTime)\n      return updateInput(this, 'value', value);\n\n    var observable = value;\n    var binding = bindInputEvent(this, 'value', observable);\n    updateInput(this, 'value',\n                observable.open(inputBinding(this, 'value', sanitizeValue)));\n    return maybeUpdateBindings(this, name, binding);\n  }\n\n  function updateOption(option, value) {\n    var parentNode = option.parentNode;;\n    var select;\n    var selectBinding;\n    var oldValue;\n    if (parentNode instanceof HTMLSelectElement &&\n        parentNode.bindings_ &&\n        parentNode.bindings_.value) {\n      select = parentNode;\n      selectBinding = select.bindings_.value;\n      oldValue = select.value;\n    }\n\n    option.value = sanitizeValue(value);\n\n    if (select && select.value != oldValue) {\n      selectBinding.observable_.setValue(select.value);\n      selectBinding.observable_.discardChanges();\n      Platform.performMicrotaskCheckpoint();\n    }\n  }\n\n  function optionBinding(option) {\n    return function(value) {\n      updateOption(option, value);\n    }\n  }\n\n  HTMLOptionElement.prototype.bind = function(name, value, oneTime) {\n    if (name !== 'value')\n      return HTMLElement.prototype.bind.call(this, name, value, oneTime);\n\n    this.removeAttribute('value');\n\n    if (oneTime)\n      return updateOption(this, value);\n\n    var observable = value;\n    var binding = bindInputEvent(this, 'value', observable);\n    updateOption(this, observable.open(optionBinding(this)));\n    return maybeUpdateBindings(this, name, binding);\n  }\n\n  HTMLSelectElement.prototype.bind = function(name, value, oneTime) {\n    if (name === 'selectedindex')\n      name = 'selectedIndex';\n\n    if (name !== 'selectedIndex' && name !== 'value')\n      return HTMLElement.prototype.bind.call(this, name, value, oneTime);\n\n    this.removeAttribute(name);\n\n    if (oneTime)\n      return updateInput(this, name, value);\n\n    var observable = value;\n    var binding = bindInputEvent(this, name, observable);\n    updateInput(this, name,\n                observable.open(inputBinding(this, name)));\n\n    // Option update events may need to access select bindings.\n    return updateBindings(this, name, binding);\n  }\n})(this);\n","// Copyright (c) 2014 The Polymer Project Authors. All rights reserved.\n// This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\n// The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\n// The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\n// Code distributed by Google as part of the polymer project is also\n// subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n\n(function(global) {\n  'use strict';\n\n  function assert(v) {\n    if (!v)\n      throw new Error('Assertion failed');\n  }\n\n  var forEach = Array.prototype.forEach.call.bind(Array.prototype.forEach);\n\n  function getFragmentRoot(node) {\n    var p;\n    while (p = node.parentNode) {\n      node = p;\n    }\n\n    return node;\n  }\n\n  function searchRefId(node, id) {\n    if (!id)\n      return;\n\n    var ref;\n    var selector = '#' + id;\n    while (!ref) {\n      node = getFragmentRoot(node);\n\n      if (node.protoContent_)\n        ref = node.protoContent_.querySelector(selector);\n      else if (node.getElementById)\n        ref = node.getElementById(id);\n\n      if (ref || !node.templateCreator_)\n        break\n\n      node = node.templateCreator_;\n    }\n\n    return ref;\n  }\n\n  function getInstanceRoot(node) {\n    while (node.parentNode) {\n      node = node.parentNode;\n    }\n    return node.templateCreator_ ? node : null;\n  }\n\n  var Map;\n  if (global.Map && typeof global.Map.prototype.forEach === 'function') {\n    Map = global.Map;\n  } else {\n    Map = function() {\n      this.keys = [];\n      this.values = [];\n    };\n\n    Map.prototype = {\n      set: function(key, value) {\n        var index = this.keys.indexOf(key);\n        if (index < 0) {\n          this.keys.push(key);\n          this.values.push(value);\n        } else {\n          this.values[index] = value;\n        }\n      },\n\n      get: function(key) {\n        var index = this.keys.indexOf(key);\n        if (index < 0)\n          return;\n\n        return this.values[index];\n      },\n\n      delete: function(key, value) {\n        var index = this.keys.indexOf(key);\n        if (index < 0)\n          return false;\n\n        this.keys.splice(index, 1);\n        this.values.splice(index, 1);\n        return true;\n      },\n\n      forEach: function(f, opt_this) {\n        for (var i = 0; i < this.keys.length; i++)\n          f.call(opt_this || this, this.values[i], this.keys[i], this);\n      }\n    };\n  }\n\n  // JScript does not have __proto__. We wrap all object literals with\n  // createObject which uses Object.create, Object.defineProperty and\n  // Object.getOwnPropertyDescriptor to create a new object that does the exact\n  // same thing. The main downside to this solution is that we have to extract\n  // all those property descriptors for IE.\n  var createObject = ('__proto__' in {}) ?\n      function(obj) { return obj; } :\n      function(obj) {\n        var proto = obj.__proto__;\n        if (!proto)\n          return obj;\n        var newObject = Object.create(proto);\n        Object.getOwnPropertyNames(obj).forEach(function(name) {\n          Object.defineProperty(newObject, name,\n                               Object.getOwnPropertyDescriptor(obj, name));\n        });\n        return newObject;\n      };\n\n  // IE does not support have Document.prototype.contains.\n  if (typeof document.contains != 'function') {\n    Document.prototype.contains = function(node) {\n      if (node === this || node.parentNode === this)\n        return true;\n      return this.documentElement.contains(node);\n    }\n  }\n\n  var BIND = 'bind';\n  var REPEAT = 'repeat';\n  var IF = 'if';\n\n  var templateAttributeDirectives = {\n    'template': true,\n    'repeat': true,\n    'bind': true,\n    'ref': true\n  };\n\n  var semanticTemplateElements = {\n    'THEAD': true,\n    'TBODY': true,\n    'TFOOT': true,\n    'TH': true,\n    'TR': true,\n    'TD': true,\n    'COLGROUP': true,\n    'COL': true,\n    'CAPTION': true,\n    'OPTION': true,\n    'OPTGROUP': true\n  };\n\n  var hasTemplateElement = typeof HTMLTemplateElement !== 'undefined';\n  if (hasTemplateElement) {\n    // TODO(rafaelw): Remove when fix for\n    // https://codereview.chromium.org/164803002/\n    // makes it to Chrome release.\n    (function() {\n      var t = document.createElement('template');\n      var d = t.content.ownerDocument;\n      var html = d.appendChild(d.createElement('html'));\n      var head = html.appendChild(d.createElement('head'));\n      var base = d.createElement('base');\n      base.href = document.baseURI;\n      head.appendChild(base);\n    })();\n  }\n\n  var allTemplatesSelectors = 'template, ' +\n      Object.keys(semanticTemplateElements).map(function(tagName) {\n        return tagName.toLowerCase() + '[template]';\n      }).join(', ');\n\n  function isSVGTemplate(el) {\n    return el.tagName == 'template' &&\n           el.namespaceURI == 'http://www.w3.org/2000/svg';\n  }\n\n  function isHTMLTemplate(el) {\n    return el.tagName == 'TEMPLATE' &&\n           el.namespaceURI == 'http://www.w3.org/1999/xhtml';\n  }\n\n  function isAttributeTemplate(el) {\n    return Boolean(semanticTemplateElements[el.tagName] &&\n                   el.hasAttribute('template'));\n  }\n\n  function isTemplate(el) {\n    if (el.isTemplate_ === undefined)\n      el.isTemplate_ = el.tagName == 'TEMPLATE' || isAttributeTemplate(el);\n\n    return el.isTemplate_;\n  }\n\n  // FIXME: Observe templates being added/removed from documents\n  // FIXME: Expose imperative API to decorate and observe templates in\n  // \"disconnected tress\" (e.g. ShadowRoot)\n  document.addEventListener('DOMContentLoaded', function(e) {\n    bootstrapTemplatesRecursivelyFrom(document);\n    // FIXME: Is this needed? Seems like it shouldn't be.\n    Platform.performMicrotaskCheckpoint();\n  }, false);\n\n  function forAllTemplatesFrom(node, fn) {\n    var subTemplates = node.querySelectorAll(allTemplatesSelectors);\n\n    if (isTemplate(node))\n      fn(node)\n    forEach(subTemplates, fn);\n  }\n\n  function bootstrapTemplatesRecursivelyFrom(node) {\n    function bootstrap(template) {\n      if (!HTMLTemplateElement.decorate(template))\n        bootstrapTemplatesRecursivelyFrom(template.content);\n    }\n\n    forAllTemplatesFrom(node, bootstrap);\n  }\n\n  if (!hasTemplateElement) {\n    /**\n     * This represents a <template> element.\n     * @constructor\n     * @extends {HTMLElement}\n     */\n    global.HTMLTemplateElement = function() {\n      throw TypeError('Illegal constructor');\n    };\n  }\n\n  var hasProto = '__proto__' in {};\n\n  function mixin(to, from) {\n    Object.getOwnPropertyNames(from).forEach(function(name) {\n      Object.defineProperty(to, name,\n                            Object.getOwnPropertyDescriptor(from, name));\n    });\n  }\n\n  // http://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/templates/index.html#dfn-template-contents-owner\n  function getOrCreateTemplateContentsOwner(template) {\n    var doc = template.ownerDocument\n    if (!doc.defaultView)\n      return doc;\n    var d = doc.templateContentsOwner_;\n    if (!d) {\n      // TODO(arv): This should either be a Document or HTMLDocument depending\n      // on doc.\n      d = doc.implementation.createHTMLDocument('');\n      while (d.lastChild) {\n        d.removeChild(d.lastChild);\n      }\n      doc.templateContentsOwner_ = d;\n    }\n    return d;\n  }\n\n  function getTemplateStagingDocument(template) {\n    if (!template.stagingDocument_) {\n      var owner = template.ownerDocument;\n      if (!owner.stagingDocument_) {\n        owner.stagingDocument_ = owner.implementation.createHTMLDocument('');\n        owner.stagingDocument_.isStagingDocument = true;\n        // TODO(rafaelw): Remove when fix for\n        // https://codereview.chromium.org/164803002/\n        // makes it to Chrome release.\n        var base = owner.stagingDocument_.createElement('base');\n        base.href = document.baseURI;\n        owner.stagingDocument_.head.appendChild(base);\n\n        owner.stagingDocument_.stagingDocument_ = owner.stagingDocument_;\n      }\n\n      template.stagingDocument_ = owner.stagingDocument_;\n    }\n\n    return template.stagingDocument_;\n  }\n\n  // For non-template browsers, the parser will disallow <template> in certain\n  // locations, so we allow \"attribute templates\" which combine the template\n  // element with the top-level container node of the content, e.g.\n  //\n  //   <tr template repeat=\"{{ foo }}\"\" class=\"bar\"><td>Bar</td></tr>\n  //\n  // becomes\n  //\n  //   <template repeat=\"{{ foo }}\">\n  //   + #document-fragment\n  //     + <tr class=\"bar\">\n  //       + <td>Bar</td>\n  //\n  function extractTemplateFromAttributeTemplate(el) {\n    var template = el.ownerDocument.createElement('template');\n    el.parentNode.insertBefore(template, el);\n\n    var attribs = el.attributes;\n    var count = attribs.length;\n    while (count-- > 0) {\n      var attrib = attribs[count];\n      if (templateAttributeDirectives[attrib.name]) {\n        if (attrib.name !== 'template')\n          template.setAttribute(attrib.name, attrib.value);\n        el.removeAttribute(attrib.name);\n      }\n    }\n\n    return template;\n  }\n\n  function extractTemplateFromSVGTemplate(el) {\n    var template = el.ownerDocument.createElement('template');\n    el.parentNode.insertBefore(template, el);\n\n    var attribs = el.attributes;\n    var count = attribs.length;\n    while (count-- > 0) {\n      var attrib = attribs[count];\n      template.setAttribute(attrib.name, attrib.value);\n      el.removeAttribute(attrib.name);\n    }\n\n    el.parentNode.removeChild(el);\n    return template;\n  }\n\n  function liftNonNativeTemplateChildrenIntoContent(template, el, useRoot) {\n    var content = template.content;\n    if (useRoot) {\n      content.appendChild(el);\n      return;\n    }\n\n    var child;\n    while (child = el.firstChild) {\n      content.appendChild(child);\n    }\n  }\n\n  var templateObserver;\n  if (typeof MutationObserver == 'function') {\n    templateObserver = new MutationObserver(function(records) {\n      for (var i = 0; i < records.length; i++) {\n        records[i].target.refChanged_();\n      }\n    });\n  }\n\n  /**\n   * Ensures proper API and content model for template elements.\n   * @param {HTMLTemplateElement} opt_instanceRef The template element which\n   *     |el| template element will return as the value of its ref(), and whose\n   *     content will be used as source when createInstance() is invoked.\n   */\n  HTMLTemplateElement.decorate = function(el, opt_instanceRef) {\n    if (el.templateIsDecorated_)\n      return false;\n\n    var templateElement = el;\n    templateElement.templateIsDecorated_ = true;\n\n    var isNativeHTMLTemplate = isHTMLTemplate(templateElement) &&\n                               hasTemplateElement;\n    var bootstrapContents = isNativeHTMLTemplate;\n    var liftContents = !isNativeHTMLTemplate;\n    var liftRoot = false;\n\n    if (!isNativeHTMLTemplate) {\n      if (isAttributeTemplate(templateElement)) {\n        assert(!opt_instanceRef);\n        templateElement = extractTemplateFromAttributeTemplate(el);\n        templateElement.templateIsDecorated_ = true;\n        isNativeHTMLTemplate = hasTemplateElement;\n        liftRoot = true;\n      } else if (isSVGTemplate(templateElement)) {\n        templateElement = extractTemplateFromSVGTemplate(el);\n        templateElement.templateIsDecorated_ = true;\n        isNativeHTMLTemplate = hasTemplateElement;\n      }\n    }\n\n    if (!isNativeHTMLTemplate) {\n      fixTemplateElementPrototype(templateElement);\n      var doc = getOrCreateTemplateContentsOwner(templateElement);\n      templateElement.content_ = doc.createDocumentFragment();\n    }\n\n    if (opt_instanceRef) {\n      // template is contained within an instance, its direct content must be\n      // empty\n      templateElement.instanceRef_ = opt_instanceRef;\n    } else if (liftContents) {\n      liftNonNativeTemplateChildrenIntoContent(templateElement,\n                                               el,\n                                               liftRoot);\n    } else if (bootstrapContents) {\n      bootstrapTemplatesRecursivelyFrom(templateElement.content);\n    }\n\n    return true;\n  };\n\n  // TODO(rafaelw): This used to decorate recursively all templates from a given\n  // node. This happens by default on 'DOMContentLoaded', but may be needed\n  // in subtrees not descendent from document (e.g. ShadowRoot).\n  // Review whether this is the right public API.\n  HTMLTemplateElement.bootstrap = bootstrapTemplatesRecursivelyFrom;\n\n  var htmlElement = global.HTMLUnknownElement || HTMLElement;\n\n  var contentDescriptor = {\n    get: function() {\n      return this.content_;\n    },\n    enumerable: true,\n    configurable: true\n  };\n\n  if (!hasTemplateElement) {\n    // Gecko is more picky with the prototype than WebKit. Make sure to use the\n    // same prototype as created in the constructor.\n    HTMLTemplateElement.prototype = Object.create(htmlElement.prototype);\n\n    Object.defineProperty(HTMLTemplateElement.prototype, 'content',\n                          contentDescriptor);\n  }\n\n  function fixTemplateElementPrototype(el) {\n    if (hasProto)\n      el.__proto__ = HTMLTemplateElement.prototype;\n    else\n      mixin(el, HTMLTemplateElement.prototype);\n  }\n\n  function ensureSetModelScheduled(template) {\n    if (!template.setModelFn_) {\n      template.setModelFn_ = function() {\n        template.setModelFnScheduled_ = false;\n        var map = getBindings(template,\n            template.delegate_ && template.delegate_.prepareBinding);\n        processBindings(template, map, template.model_);\n      };\n    }\n\n    if (!template.setModelFnScheduled_) {\n      template.setModelFnScheduled_ = true;\n      Observer.runEOM_(template.setModelFn_);\n    }\n  }\n\n  mixin(HTMLTemplateElement.prototype, {\n    bind: function(name, value, oneTime) {\n      if (name != 'ref')\n        return Element.prototype.bind.call(this, name, value, oneTime);\n\n      var self = this;\n      var ref = oneTime ? value : value.open(function(ref) {\n        self.setAttribute('ref', ref);\n        self.refChanged_();\n      });\n\n      this.setAttribute('ref', ref);\n      this.refChanged_();\n      if (oneTime)\n        return;\n\n      if (!this.bindings_) {\n        this.bindings_ = { ref: value };\n      } else {\n        this.bindings_.ref = value;\n      }\n\n      return value;\n    },\n\n    processBindingDirectives_: function(directives) {\n      if (this.iterator_)\n        this.iterator_.closeDeps();\n\n      if (!directives.if && !directives.bind && !directives.repeat) {\n        if (this.iterator_) {\n          this.iterator_.close();\n          this.iterator_ = undefined;\n        }\n\n        return;\n      }\n\n      if (!this.iterator_) {\n        this.iterator_ = new TemplateIterator(this);\n      }\n\n      this.iterator_.updateDependencies(directives, this.model_);\n\n      if (templateObserver) {\n        templateObserver.observe(this, { attributes: true,\n                                         attributeFilter: ['ref'] });\n      }\n\n      return this.iterator_;\n    },\n\n    createInstance: function(model, bindingDelegate, delegate_) {\n      if (bindingDelegate)\n        delegate_ = this.newDelegate_(bindingDelegate);\n      else if (!delegate_)\n        delegate_ = this.delegate_;\n\n      if (!this.refContent_)\n        this.refContent_ = this.ref_.content;\n      var content = this.refContent_;\n      if (content.firstChild === null)\n        return emptyInstance;\n\n      var map = getInstanceBindingMap(content, delegate_);\n      var stagingDocument = getTemplateStagingDocument(this);\n      var instance = stagingDocument.createDocumentFragment();\n      instance.templateCreator_ = this;\n      instance.protoContent_ = content;\n      instance.bindings_ = [];\n      instance.terminator_ = null;\n      var instanceRecord = instance.templateInstance_ = {\n        firstNode: null,\n        lastNode: null,\n        model: model\n      };\n\n      var i = 0;\n      var collectTerminator = false;\n      for (var child = content.firstChild; child; child = child.nextSibling) {\n        // The terminator of the instance is the clone of the last child of the\n        // content. If the last child is an active template, it may produce\n        // instances as a result of production, so simply collecting the last\n        // child of the instance after it has finished producing may be wrong.\n        if (child.nextSibling === null)\n          collectTerminator = true;\n\n        var clone = cloneAndBindInstance(child, instance, stagingDocument,\n                                         map.children[i++],\n                                         model,\n                                         delegate_,\n                                         instance.bindings_);\n        clone.templateInstance_ = instanceRecord;\n        if (collectTerminator)\n          instance.terminator_ = clone;\n      }\n\n      instanceRecord.firstNode = instance.firstChild;\n      instanceRecord.lastNode = instance.lastChild;\n      instance.templateCreator_ = undefined;\n      instance.protoContent_ = undefined;\n      return instance;\n    },\n\n    get model() {\n      return this.model_;\n    },\n\n    set model(model) {\n      this.model_ = model;\n      ensureSetModelScheduled(this);\n    },\n\n    get bindingDelegate() {\n      return this.delegate_ && this.delegate_.raw;\n    },\n\n    refChanged_: function() {\n      if (!this.iterator_ || this.refContent_ === this.ref_.content)\n        return;\n\n      this.refContent_ = undefined;\n      this.iterator_.valueChanged();\n      this.iterator_.updateIteratedValue();\n    },\n\n    clear: function() {\n      this.model_ = undefined;\n      this.delegate_ = undefined;\n      if (this.bindings_ && this.bindings_.ref)\n        this.bindings_.ref.close()\n      this.refContent_ = undefined;\n      if (!this.iterator_)\n        return;\n      this.iterator_.valueChanged();\n      this.iterator_.close()\n      this.iterator_ = undefined;\n    },\n\n    setDelegate_: function(delegate) {\n      this.delegate_ = delegate;\n      this.bindingMap_ = undefined;\n      if (this.iterator_) {\n        this.iterator_.instancePositionChangedFn_ = undefined;\n        this.iterator_.instanceModelFn_ = undefined;\n      }\n    },\n\n    newDelegate_: function(bindingDelegate) {\n      if (!bindingDelegate)\n        return;\n\n      function delegateFn(name) {\n        var fn = bindingDelegate && bindingDelegate[name];\n        if (typeof fn != 'function')\n          return;\n\n        return function() {\n          return fn.apply(bindingDelegate, arguments);\n        };\n      }\n\n      return {\n        bindingMaps: {},\n        raw: bindingDelegate,\n        prepareBinding: delegateFn('prepareBinding'),\n        prepareInstanceModel: delegateFn('prepareInstanceModel'),\n        prepareInstancePositionChanged:\n            delegateFn('prepareInstancePositionChanged')\n      };\n    },\n\n    // TODO(rafaelw): Assigning .bindingDelegate always succeeds. It may\n    // make sense to issue a warning or even throw if the template is already\n    // \"activated\", since this would be a strange thing to do.\n    set bindingDelegate(bindingDelegate) {\n      if (this.delegate_) {\n        throw Error('Template must be cleared before a new bindingDelegate ' +\n                    'can be assigned');\n      }\n\n      this.setDelegate_(this.newDelegate_(bindingDelegate));\n    },\n\n    get ref_() {\n      var ref = searchRefId(this, this.getAttribute('ref'));\n      if (!ref)\n        ref = this.instanceRef_;\n\n      if (!ref)\n        return this;\n\n      var nextRef = ref.ref_;\n      return nextRef ? nextRef : ref;\n    }\n  });\n\n  // Returns\n  //   a) undefined if there are no mustaches.\n  //   b) [TEXT, (ONE_TIME?, PATH, DELEGATE_FN, TEXT)+] if there is at least one mustache.\n  function parseMustaches(s, name, node, prepareBindingFn) {\n    if (!s || !s.length)\n      return;\n\n    var tokens;\n    var length = s.length;\n    var startIndex = 0, lastIndex = 0, endIndex = 0;\n    var onlyOneTime = true;\n    while (lastIndex < length) {\n      var startIndex = s.indexOf('{{', lastIndex);\n      var oneTimeStart = s.indexOf('[[', lastIndex);\n      var oneTime = false;\n      var terminator = '}}';\n\n      if (oneTimeStart >= 0 &&\n          (startIndex < 0 || oneTimeStart < startIndex)) {\n        startIndex = oneTimeStart;\n        oneTime = true;\n        terminator = ']]';\n      }\n\n      endIndex = startIndex < 0 ? -1 : s.indexOf(terminator, startIndex + 2);\n\n      if (endIndex < 0) {\n        if (!tokens)\n          return;\n\n        tokens.push(s.slice(lastIndex)); // TEXT\n        break;\n      }\n\n      tokens = tokens || [];\n      tokens.push(s.slice(lastIndex, startIndex)); // TEXT\n      var pathString = s.slice(startIndex + 2, endIndex).trim();\n      tokens.push(oneTime); // ONE_TIME?\n      onlyOneTime = onlyOneTime && oneTime;\n      var delegateFn = prepareBindingFn &&\n                       prepareBindingFn(pathString, name, node);\n      // Don't try to parse the expression if there's a prepareBinding function\n      if (delegateFn == null) {\n        tokens.push(Path.get(pathString)); // PATH\n      } else {\n        tokens.push(null);\n      }\n      tokens.push(delegateFn); // DELEGATE_FN\n      lastIndex = endIndex + 2;\n    }\n\n    if (lastIndex === length)\n      tokens.push(''); // TEXT\n\n    tokens.hasOnePath = tokens.length === 5;\n    tokens.isSimplePath = tokens.hasOnePath &&\n                          tokens[0] == '' &&\n                          tokens[4] == '';\n    tokens.onlyOneTime = onlyOneTime;\n\n    tokens.combinator = function(values) {\n      var newValue = tokens[0];\n\n      for (var i = 1; i < tokens.length; i += 4) {\n        var value = tokens.hasOnePath ? values : values[(i - 1) / 4];\n        if (value !== undefined)\n          newValue += value;\n        newValue += tokens[i + 3];\n      }\n\n      return newValue;\n    }\n\n    return tokens;\n  };\n\n  function processOneTimeBinding(name, tokens, node, model) {\n    if (tokens.hasOnePath) {\n      var delegateFn = tokens[3];\n      var value = delegateFn ? delegateFn(model, node, true) :\n                               tokens[2].getValueFrom(model);\n      return tokens.isSimplePath ? value : tokens.combinator(value);\n    }\n\n    var values = [];\n    for (var i = 1; i < tokens.length; i += 4) {\n      var delegateFn = tokens[i + 2];\n      values[(i - 1) / 4] = delegateFn ? delegateFn(model, node) :\n          tokens[i + 1].getValueFrom(model);\n    }\n\n    return tokens.combinator(values);\n  }\n\n  function processSinglePathBinding(name, tokens, node, model) {\n    var delegateFn = tokens[3];\n    var observer = delegateFn ? delegateFn(model, node, false) :\n        new PathObserver(model, tokens[2]);\n\n    return tokens.isSimplePath ? observer :\n        new ObserverTransform(observer, tokens.combinator);\n  }\n\n  function processBinding(name, tokens, node, model) {\n    if (tokens.onlyOneTime)\n      return processOneTimeBinding(name, tokens, node, model);\n\n    if (tokens.hasOnePath)\n      return processSinglePathBinding(name, tokens, node, model);\n\n    var observer = new CompoundObserver();\n\n    for (var i = 1; i < tokens.length; i += 4) {\n      var oneTime = tokens[i];\n      var delegateFn = tokens[i + 2];\n\n      if (delegateFn) {\n        var value = delegateFn(model, node, oneTime);\n        if (oneTime)\n          observer.addPath(value)\n        else\n          observer.addObserver(value);\n        continue;\n      }\n\n      var path = tokens[i + 1];\n      if (oneTime)\n        observer.addPath(path.getValueFrom(model))\n      else\n        observer.addPath(model, path);\n    }\n\n    return new ObserverTransform(observer, tokens.combinator);\n  }\n\n  function processBindings(node, bindings, model, instanceBindings) {\n    for (var i = 0; i < bindings.length; i += 2) {\n      var name = bindings[i]\n      var tokens = bindings[i + 1];\n      var value = processBinding(name, tokens, node, model);\n      var binding = node.bind(name, value, tokens.onlyOneTime);\n      if (binding && instanceBindings)\n        instanceBindings.push(binding);\n    }\n\n    node.bindFinished();\n    if (!bindings.isTemplate)\n      return;\n\n    node.model_ = model;\n    var iter = node.processBindingDirectives_(bindings);\n    if (instanceBindings && iter)\n      instanceBindings.push(iter);\n  }\n\n  function parseWithDefault(el, name, prepareBindingFn) {\n    var v = el.getAttribute(name);\n    return parseMustaches(v == '' ? '{{}}' : v, name, el, prepareBindingFn);\n  }\n\n  function parseAttributeBindings(element, prepareBindingFn) {\n    assert(element);\n\n    var bindings = [];\n    var ifFound = false;\n    var bindFound = false;\n\n    for (var i = 0; i < element.attributes.length; i++) {\n      var attr = element.attributes[i];\n      var name = attr.name;\n      var value = attr.value;\n\n      // Allow bindings expressed in attributes to be prefixed with underbars.\n      // We do this to allow correct semantics for browsers that don't implement\n      // <template> where certain attributes might trigger side-effects -- and\n      // for IE which sanitizes certain attributes, disallowing mustache\n      // replacements in their text.\n      while (name[0] === '_') {\n        name = name.substring(1);\n      }\n\n      if (isTemplate(element) &&\n          (name === IF || name === BIND || name === REPEAT)) {\n        continue;\n      }\n\n      var tokens = parseMustaches(value, name, element,\n                                  prepareBindingFn);\n      if (!tokens)\n        continue;\n\n      bindings.push(name, tokens);\n    }\n\n    if (isTemplate(element)) {\n      bindings.isTemplate = true;\n      bindings.if = parseWithDefault(element, IF, prepareBindingFn);\n      bindings.bind = parseWithDefault(element, BIND, prepareBindingFn);\n      bindings.repeat = parseWithDefault(element, REPEAT, prepareBindingFn);\n\n      if (bindings.if && !bindings.bind && !bindings.repeat)\n        bindings.bind = parseMustaches('{{}}', BIND, element, prepareBindingFn);\n    }\n\n    return bindings;\n  }\n\n  function getBindings(node, prepareBindingFn) {\n    if (node.nodeType === Node.ELEMENT_NODE)\n      return parseAttributeBindings(node, prepareBindingFn);\n\n    if (node.nodeType === Node.TEXT_NODE) {\n      var tokens = parseMustaches(node.data, 'textContent', node,\n                                  prepareBindingFn);\n      if (tokens)\n        return ['textContent', tokens];\n    }\n\n    return [];\n  }\n\n  function cloneAndBindInstance(node, parent, stagingDocument, bindings, model,\n                                delegate,\n                                instanceBindings,\n                                instanceRecord) {\n    var clone = parent.appendChild(stagingDocument.importNode(node, false));\n\n    var i = 0;\n    for (var child = node.firstChild; child; child = child.nextSibling) {\n      cloneAndBindInstance(child, clone, stagingDocument,\n                            bindings.children[i++],\n                            model,\n                            delegate,\n                            instanceBindings);\n    }\n\n    if (bindings.isTemplate) {\n      HTMLTemplateElement.decorate(clone, node);\n      if (delegate)\n        clone.setDelegate_(delegate);\n    }\n\n    processBindings(clone, bindings, model, instanceBindings);\n    return clone;\n  }\n\n  function createInstanceBindingMap(node, prepareBindingFn) {\n    var map = getBindings(node, prepareBindingFn);\n    map.children = {};\n    var index = 0;\n    for (var child = node.firstChild; child; child = child.nextSibling) {\n      map.children[index++] = createInstanceBindingMap(child, prepareBindingFn);\n    }\n\n    return map;\n  }\n\n  var contentUidCounter = 1;\n\n  // TODO(rafaelw): Setup a MutationObserver on content which clears the id\n  // so that bindingMaps regenerate when the template.content changes.\n  function getContentUid(content) {\n    var id = content.id_;\n    if (!id)\n      id = content.id_ = contentUidCounter++;\n    return id;\n  }\n\n  // Each delegate is associated with a set of bindingMaps, one for each\n  // content which may be used by a template. The intent is that each binding\n  // delegate gets the opportunity to prepare the instance (via the prepare*\n  // delegate calls) once across all uses.\n  // TODO(rafaelw): Separate out the parse map from the binding map. In the\n  // current implementation, if two delegates need a binding map for the same\n  // content, the second will have to reparse.\n  function getInstanceBindingMap(content, delegate_) {\n    var contentId = getContentUid(content);\n    if (delegate_) {\n      var map = delegate_.bindingMaps[contentId];\n      if (!map) {\n        map = delegate_.bindingMaps[contentId] =\n            createInstanceBindingMap(content, delegate_.prepareBinding) || [];\n      }\n      return map;\n    }\n\n    var map = content.bindingMap_;\n    if (!map) {\n      map = content.bindingMap_ =\n          createInstanceBindingMap(content, undefined) || [];\n    }\n    return map;\n  }\n\n  Object.defineProperty(Node.prototype, 'templateInstance', {\n    get: function() {\n      var instance = this.templateInstance_;\n      return instance ? instance :\n          (this.parentNode ? this.parentNode.templateInstance : undefined);\n    }\n  });\n\n  var emptyInstance = document.createDocumentFragment();\n  emptyInstance.bindings_ = [];\n  emptyInstance.terminator_ = null;\n\n  function TemplateIterator(templateElement) {\n    this.closed = false;\n    this.templateElement_ = templateElement;\n    this.instances = [];\n    this.deps = undefined;\n    this.iteratedValue = [];\n    this.presentValue = undefined;\n    this.arrayObserver = undefined;\n  }\n\n  TemplateIterator.prototype = {\n    closeDeps: function() {\n      var deps = this.deps;\n      if (deps) {\n        if (deps.ifOneTime === false)\n          deps.ifValue.close();\n        if (deps.oneTime === false)\n          deps.value.close();\n      }\n    },\n\n    updateDependencies: function(directives, model) {\n      this.closeDeps();\n\n      var deps = this.deps = {};\n      var template = this.templateElement_;\n\n      if (directives.if) {\n        deps.hasIf = true;\n        deps.ifOneTime = directives.if.onlyOneTime;\n        deps.ifValue = processBinding(IF, directives.if, template, model);\n\n        // oneTime if & predicate is false. nothing else to do.\n        if (deps.ifOneTime && !deps.ifValue) {\n          this.updateIteratedValue();\n          return;\n        }\n\n        if (!deps.ifOneTime)\n          deps.ifValue.open(this.updateIteratedValue, this);\n      }\n\n      if (directives.repeat) {\n        deps.repeat = true;\n        deps.oneTime = directives.repeat.onlyOneTime;\n        deps.value = processBinding(REPEAT, directives.repeat, template, model);\n      } else {\n        deps.repeat = false;\n        deps.oneTime = directives.bind.onlyOneTime;\n        deps.value = processBinding(BIND, directives.bind, template, model);\n      }\n\n      if (!deps.oneTime)\n        deps.value.open(this.updateIteratedValue, this);\n\n      this.updateIteratedValue();\n    },\n\n    updateIteratedValue: function() {\n      if (this.deps.hasIf) {\n        var ifValue = this.deps.ifValue;\n        if (!this.deps.ifOneTime)\n          ifValue = ifValue.discardChanges();\n        if (!ifValue) {\n          this.valueChanged();\n          return;\n        }\n      }\n\n      var value = this.deps.value;\n      if (!this.deps.oneTime)\n        value = value.discardChanges();\n      if (!this.deps.repeat)\n        value = [value];\n      var observe = this.deps.repeat &&\n                    !this.deps.oneTime &&\n                    Array.isArray(value);\n      this.valueChanged(value, observe);\n    },\n\n    valueChanged: function(value, observeValue) {\n      if (!Array.isArray(value))\n        value = [];\n\n      if (value === this.iteratedValue)\n        return;\n\n      this.unobserve();\n      this.presentValue = value;\n      if (observeValue) {\n        this.arrayObserver = new ArrayObserver(this.presentValue);\n        this.arrayObserver.open(this.handleSplices, this);\n      }\n\n      this.handleSplices(ArrayObserver.calculateSplices(this.presentValue,\n                                                        this.iteratedValue));\n    },\n\n    getLastInstanceNode: function(index) {\n      if (index == -1)\n        return this.templateElement_;\n      var instance = this.instances[index];\n      var terminator = instance.terminator_;\n      if (!terminator)\n        return this.getLastInstanceNode(index - 1);\n\n      if (terminator.nodeType !== Node.ELEMENT_NODE ||\n          this.templateElement_ === terminator) {\n        return terminator;\n      }\n\n      var subtemplateIterator = terminator.iterator_;\n      if (!subtemplateIterator)\n        return terminator;\n\n      return subtemplateIterator.getLastTemplateNode();\n    },\n\n    getLastTemplateNode: function() {\n      return this.getLastInstanceNode(this.instances.length - 1);\n    },\n\n    insertInstanceAt: function(index, fragment) {\n      var previousInstanceLast = this.getLastInstanceNode(index - 1);\n      var parent = this.templateElement_.parentNode;\n      this.instances.splice(index, 0, fragment);\n\n      parent.insertBefore(fragment, previousInstanceLast.nextSibling);\n    },\n\n    extractInstanceAt: function(index) {\n      var previousInstanceLast = this.getLastInstanceNode(index - 1);\n      var lastNode = this.getLastInstanceNode(index);\n      var parent = this.templateElement_.parentNode;\n      var instance = this.instances.splice(index, 1)[0];\n\n      while (lastNode !== previousInstanceLast) {\n        var node = previousInstanceLast.nextSibling;\n        if (node == lastNode)\n          lastNode = previousInstanceLast;\n\n        instance.appendChild(parent.removeChild(node));\n      }\n\n      return instance;\n    },\n\n    getDelegateFn: function(fn) {\n      fn = fn && fn(this.templateElement_);\n      return typeof fn === 'function' ? fn : null;\n    },\n\n    handleSplices: function(splices) {\n      if (this.closed || !splices.length)\n        return;\n\n      var template = this.templateElement_;\n\n      if (!template.parentNode) {\n        this.close();\n        return;\n      }\n\n      ArrayObserver.applySplices(this.iteratedValue, this.presentValue,\n                                 splices);\n\n      var delegate = template.delegate_;\n      if (this.instanceModelFn_ === undefined) {\n        this.instanceModelFn_ =\n            this.getDelegateFn(delegate && delegate.prepareInstanceModel);\n      }\n\n      if (this.instancePositionChangedFn_ === undefined) {\n        this.instancePositionChangedFn_ =\n            this.getDelegateFn(delegate &&\n                               delegate.prepareInstancePositionChanged);\n      }\n\n      // Instance Removals\n      var instanceCache = new Map;\n      var removeDelta = 0;\n      for (var i = 0; i < splices.length; i++) {\n        var splice = splices[i];\n        var removed = splice.removed;\n        for (var j = 0; j < removed.length; j++) {\n          var model = removed[j];\n          var instance = this.extractInstanceAt(splice.index + removeDelta);\n          if (instance !== emptyInstance) {\n            instanceCache.set(model, instance);\n          }\n        }\n\n        removeDelta -= splice.addedCount;\n      }\n\n      // Instance Insertions\n      for (var i = 0; i < splices.length; i++) {\n        var splice = splices[i];\n        var addIndex = splice.index;\n        for (; addIndex < splice.index + splice.addedCount; addIndex++) {\n          var model = this.iteratedValue[addIndex];\n          var instance = instanceCache.get(model);\n          if (instance) {\n            instanceCache.delete(model);\n          } else {\n            if (this.instanceModelFn_) {\n              model = this.instanceModelFn_(model);\n            }\n\n            if (model === undefined) {\n              instance = emptyInstance;\n            } else {\n              instance = template.createInstance(model, undefined, delegate);\n            }\n          }\n\n          this.insertInstanceAt(addIndex, instance);\n        }\n      }\n\n      instanceCache.forEach(function(instance) {\n        this.closeInstanceBindings(instance);\n      }, this);\n\n      if (this.instancePositionChangedFn_)\n        this.reportInstancesMoved(splices);\n    },\n\n    reportInstanceMoved: function(index) {\n      var instance = this.instances[index];\n      if (instance === emptyInstance)\n        return;\n\n      this.instancePositionChangedFn_(instance.templateInstance_, index);\n    },\n\n    reportInstancesMoved: function(splices) {\n      var index = 0;\n      var offset = 0;\n      for (var i = 0; i < splices.length; i++) {\n        var splice = splices[i];\n        if (offset != 0) {\n          while (index < splice.index) {\n            this.reportInstanceMoved(index);\n            index++;\n          }\n        } else {\n          index = splice.index;\n        }\n\n        while (index < splice.index + splice.addedCount) {\n          this.reportInstanceMoved(index);\n          index++;\n        }\n\n        offset += splice.addedCount - splice.removed.length;\n      }\n\n      if (offset == 0)\n        return;\n\n      var length = this.instances.length;\n      while (index < length) {\n        this.reportInstanceMoved(index);\n        index++;\n      }\n    },\n\n    closeInstanceBindings: function(instance) {\n      var bindings = instance.bindings_;\n      for (var i = 0; i < bindings.length; i++) {\n        bindings[i].close();\n      }\n    },\n\n    unobserve: function() {\n      if (!this.arrayObserver)\n        return;\n\n      this.arrayObserver.close();\n      this.arrayObserver = undefined;\n    },\n\n    close: function() {\n      if (this.closed)\n        return;\n      this.unobserve();\n      for (var i = 0; i < this.instances.length; i++) {\n        this.closeInstanceBindings(this.instances[i]);\n      }\n\n      this.instances.length = 0;\n      this.closeDeps();\n      this.templateElement_.iterator_ = undefined;\n      this.closed = true;\n    }\n  };\n\n  // Polyfill-specific API.\n  HTMLTemplateElement.forAllTemplatesFrom_ = forAllTemplatesFrom;\n})(this);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(scope) {\n\n// inject style sheet\nvar style = document.createElement('style');\nstyle.textContent = 'template {display: none !important;} /* injected by platform.js */';\nvar head = document.querySelector('head');\nhead.insertBefore(style, head.firstChild);\n\n// flush (with logging)\nvar flushing;\nfunction flush() {\n  if (!flushing) {\n    flushing = true;\n    scope.endOfMicrotask(function() {\n      flushing = false;\n      logFlags.data && console.group('Platform.flush()');\n      scope.performMicrotaskCheckpoint();\n      logFlags.data && console.groupEnd();\n    });\n  }\n};\n\n// polling dirty checker\n// flush periodically if platform does not have object observe.\nif (!Observer.hasObjectObserve) {\n  var FLUSH_POLL_INTERVAL = 125;\n  window.addEventListener('WebComponentsReady', function() {\n    flush();\n    scope.flushPoll = setInterval(flush, FLUSH_POLL_INTERVAL);\n  });\n} else {\n  // make flush a no-op when we have Object.observe\n  flush = function() {};\n}\n\nif (window.CustomElements && !CustomElements.useNative) {\n  var originalImportNode = Document.prototype.importNode;\n  Document.prototype.importNode = function(node, deep) {\n    var imported = originalImportNode.call(this, node, deep);\n    CustomElements.upgradeAll(imported);\n    return imported;\n  }\n}\n\n// exports\nscope.flush = flush;\n\n})(window.Platform);\n\n"]}
\ No newline at end of file
diff --git a/bower_components/polymer-ajax/.bower.json b/bower_components/polymer-ajax/.bower.json
deleted file mode 100644
index 3092c69..0000000
--- a/bower_components/polymer-ajax/.bower.json
+++ /dev/null
@@ -1,18 +0,0 @@
-{
-  "name": "polymer-ajax",
-  "private": true,
-  "dependencies": {
-    "polymer": "Polymer/polymer#0.2.1"
-  },
-  "version": "0.2.1",
-  "homepage": "https://github.com/Polymer/polymer-ajax",
-  "_release": "0.2.1",
-  "_resolution": {
-    "type": "version",
-    "tag": "0.2.1",
-    "commit": "6d31f7e51d9801a0c7ea64a9fa5949fb5ae14e00"
-  },
-  "_source": "git://github.com/Polymer/polymer-ajax.git",
-  "_target": "0.2.1",
-  "_originalSource": "Polymer/polymer-ajax"
-}
\ No newline at end of file
diff --git a/bower_components/polymer-ajax/AUTHORS b/bower_components/polymer-ajax/AUTHORS
deleted file mode 100644
index 0617765..0000000
--- a/bower_components/polymer-ajax/AUTHORS
+++ /dev/null
@@ -1,9 +0,0 @@
-# Names should be added to this file with this pattern:
-#
-# For individuals:
-#   Name <email address>
-#
-# For organizations:
-#   Organization <fnmatch pattern>
-#
-Google Inc. <*@google.com>
diff --git a/bower_components/polymer-ajax/CONTRIBUTING.md b/bower_components/polymer-ajax/CONTRIBUTING.md
deleted file mode 100644
index 6f3aca9..0000000
--- a/bower_components/polymer-ajax/CONTRIBUTING.md
+++ /dev/null
@@ -1 +0,0 @@
-See https://github.com/Polymer/polymer/blob/master/CONTRIBUTING.md
diff --git a/bower_components/polymer-ajax/LICENSE b/bower_components/polymer-ajax/LICENSE
deleted file mode 100644
index 92d60b0..0000000
--- a/bower_components/polymer-ajax/LICENSE
+++ /dev/null
@@ -1,27 +0,0 @@
-// Copyright (c) 2012 The Polymer Authors. All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//    * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//    * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//    * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/bower_components/polymer-ajax/PATENTS b/bower_components/polymer-ajax/PATENTS
deleted file mode 100644
index e120963..0000000
--- a/bower_components/polymer-ajax/PATENTS
+++ /dev/null
@@ -1,23 +0,0 @@
-Additional IP Rights Grant (Patents)
-
-"This implementation" means the copyrightable works distributed by
-Google as part of the Polymer project.
-
-Google hereby grants to You a perpetual, worldwide, non-exclusive,
-no-charge, royalty-free, irrevocable (except as stated in this section)
-patent license to make, have made, use, offer to sell, sell, import,
-transfer and otherwise run, modify and propagate the contents of this
-implementation of Polymer, where such license applies only to those
-patent claims, both currently owned or controlled by Google and acquired
-in the future, licensable by Google that are necessarily infringed by
-this implementation of Polymer.  This grant does not include claims
-that would be infringed only as a consequence of further modification of
-this implementation.  If you or your agent or exclusive licensee
-institute or order or agree to the institution of patent litigation
-against any entity (including a cross-claim or counterclaim in a
-lawsuit) alleging that this implementation of Polymer or any code
-incorporated within this implementation of Polymer constitutes
-direct or contributory patent infringement, or inducement of patent
-infringement, then any patent rights granted to you under this License
-for this implementation of Polymer shall terminate as of the date
-such litigation is filed.
diff --git a/bower_components/polymer-ajax/bower.json b/bower_components/polymer-ajax/bower.json
deleted file mode 100644
index ceaedc5..0000000
--- a/bower_components/polymer-ajax/bower.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "name": "polymer-ajax",
-  "private": true,
-  "dependencies": {
-    "polymer": "Polymer/polymer#0.2.1"
-  },
-  "version": "0.2.1"
-}
\ No newline at end of file
diff --git a/bower_components/polymer-ajax/demo.html b/bower_components/polymer-ajax/demo.html
deleted file mode 100644
index cf67a87..0000000
--- a/bower_components/polymer-ajax/demo.html
+++ /dev/null
@@ -1,30 +0,0 @@
-<!DOCTYPE html>
-<html>
-<head>
-  <title>polymer-ajax</title>
-  <script src="../platform/platform.js"></script>
-  <link rel="import" href="polymer-ajax.html">
-</head>
-<body>
-  <polymer-ajax auto url="http://gdata.youtube.com/feeds/api/videos/" 
-      params='{"alt":"json", "q":"chrome"}'
-      handleAs="json"></polymer-ajax>
-   
-  <template repeat="{{response.feed.entry}}">
-    <div>{{title.$t}}</div>
-  </template>
-  
-  <script>
-    document.addEventListener('polymer-ready', function() {
-      var ajax = document.querySelector("polymer-ajax");
-      ajax.addEventListener("polymer-response", 
-        function(e) {
-          document.querySelector('template').model = {
-            response: e.detail.response
-          };
-        }
-      );
-    });
-  </script>
-</body>
-</html>
diff --git a/bower_components/polymer-ajax/docs.json b/bower_components/polymer-ajax/docs.json
deleted file mode 100644
index bb7b3e6..0000000
--- a/bower_components/polymer-ajax/docs.json
+++ /dev/null
@@ -1,245 +0,0 @@
-{
-    "project": {
-        "name": "Docs",
-        "description": "Docs"
-    },
-    "files": {
-        "..\\..\\polymer-ajax\\polymer-ajax.html": {
-            "name": "..\\..\\polymer-ajax\\polymer-ajax.html",
-            "modules": {
-                "Polymer Elements": 1
-            },
-            "classes": {
-                "polymer-ajax": 1
-            },
-            "fors": {},
-            "namespaces": {}
-        },
-        "..\\..\\polymer-ajax\\polymer-xhr.html": {
-            "name": "..\\..\\polymer-ajax\\polymer-xhr.html",
-            "modules": {},
-            "classes": {
-                "polymer-xhr": 1
-            },
-            "fors": {},
-            "namespaces": {}
-        }
-    },
-    "modules": {
-        "Polymer Elements": {
-            "name": "Polymer Elements",
-            "submodules": {},
-            "classes": {
-                "polymer-ajax": 1,
-                "polymer-xhr": 1
-            },
-            "fors": {},
-            "namespaces": {},
-            "tag": "module",
-            "file": "..\\..\\polymer-ajax\\polymer-xhr.html",
-            "line": 10
-        }
-    },
-    "classes": {
-        "polymer-ajax": {
-            "name": "polymer-ajax",
-            "shortname": "polymer-ajax",
-            "classitems": [],
-            "plugins": [],
-            "extensions": [],
-            "plugin_for": [],
-            "extension_for": [],
-            "module": "Polymer Elements",
-            "namespace": "",
-            "file": "..\\..\\polymer-ajax\\polymer-ajax.html",
-            "line": 10,
-            "description": "polymer-ajax can be used to perform XMLHttpRequests.\n\nExample:\n\n    <polymer-ajax auto url=\"http://gdata.youtube.com/feeds/api/videos/\" \n        params='{\"alt\":\"json\", \"q\":\"chrome\"}'\n        handleAs=\"json\"\n        on-polymer-response=\"{{handleResponse}}\">\n    </polymer-ajax>"
-        },
-        "polymer-xhr": {
-            "name": "polymer-xhr",
-            "shortname": "polymer-xhr",
-            "classitems": [],
-            "plugins": [],
-            "extensions": [],
-            "plugin_for": [],
-            "extension_for": [],
-            "module": "Polymer Elements",
-            "namespace": "",
-            "file": "..\\..\\polymer-ajax\\polymer-xhr.html",
-            "line": 10,
-            "description": "polymer-xhr can be used to perform XMLHttpRequests.\n\nExample:\n\n    <polymer-xhr id=\"xhr\"></polymer-xhr>\n    ...\n    this.$.xhr.request({url: url, params: params, callback: callback});"
-        }
-    },
-    "classitems": [
-        {
-            "file": "..\\..\\polymer-ajax\\polymer-ajax.html",
-            "line": 23,
-            "description": "Fired when a response is received.",
-            "itemtype": "event",
-            "name": "polymer-response",
-            "class": "polymer-ajax",
-            "module": "Polymer Elements"
-        },
-        {
-            "file": "..\\..\\polymer-ajax\\polymer-ajax.html",
-            "line": 28,
-            "description": "Fired when an error is received.",
-            "itemtype": "event",
-            "name": "polymer-error",
-            "class": "polymer-ajax",
-            "module": "Polymer Elements"
-        },
-        {
-            "file": "..\\..\\polymer-ajax\\polymer-ajax.html",
-            "line": 33,
-            "description": "Fired whenever a response or an error is received.",
-            "itemtype": "event",
-            "name": "polymer-complete",
-            "class": "polymer-ajax",
-            "module": "Polymer Elements"
-        },
-        {
-            "file": "..\\..\\polymer-ajax\\polymer-ajax.html",
-            "line": 45,
-            "description": "The URL target of the request.",
-            "itemtype": "attribute",
-            "name": "url",
-            "type": "string",
-            "default": "''",
-            "class": "polymer-ajax",
-            "module": "Polymer Elements"
-        },
-        {
-            "file": "..\\..\\polymer-ajax\\polymer-ajax.html",
-            "line": 53,
-            "description": "Specifies what data to store in the 'response' property, and\nto deliver as 'event.response' in 'response' events.\n\nOne of:\n\n   `text`: uses XHR.responseText\n   \n   `xml`: uses XHR.responseXML\n   \n   `json`: uses XHR.responseText parsed as JSON",
-            "itemtype": "attribute",
-            "name": "handleAs",
-            "type": "string",
-            "default": "'text'",
-            "class": "polymer-ajax",
-            "module": "Polymer Elements"
-        },
-        {
-            "file": "..\\..\\polymer-ajax\\polymer-ajax.html",
-            "line": 70,
-            "description": "If true, automatically performs an Ajax request when either url or params has changed.",
-            "itemtype": "attribute",
-            "name": "auto",
-            "type": "boolean",
-            "default": "false",
-            "class": "polymer-ajax",
-            "module": "Polymer Elements"
-        },
-        {
-            "file": "..\\..\\polymer-ajax\\polymer-ajax.html",
-            "line": 78,
-            "description": "Parameters to send to the specified URL, as JSON.",
-            "itemtype": "attribute",
-            "name": "params",
-            "type": "string (JSON)",
-            "default": "''",
-            "class": "polymer-ajax",
-            "module": "Polymer Elements"
-        },
-        {
-            "file": "..\\..\\polymer-ajax\\polymer-ajax.html",
-            "line": 86,
-            "description": "Returns the response object.",
-            "itemtype": "attribute",
-            "name": "response",
-            "type": "Object",
-            "default": "null",
-            "class": "polymer-ajax",
-            "module": "Polymer Elements"
-        },
-        {
-            "file": "..\\..\\polymer-ajax\\polymer-ajax.html",
-            "line": 94,
-            "description": "The HTTP method to use such as 'GET', 'POST', 'PUT', 'DELETE'.\nDefault is 'GET'.",
-            "itemtype": "attribute",
-            "name": "method",
-            "type": "string",
-            "default": "''",
-            "class": "polymer-ajax",
-            "module": "Polymer Elements"
-        },
-        {
-            "file": "..\\..\\polymer-ajax\\polymer-ajax.html",
-            "line": 172,
-            "description": "Performs an Ajax request to the url specified.",
-            "itemtype": "method",
-            "name": "go",
-            "class": "polymer-ajax",
-            "module": "Polymer Elements"
-        },
-        {
-            "file": "..\\..\\polymer-ajax\\polymer-xhr.html",
-            "line": 59,
-            "description": "Sends a HTTP request to the server and returns the XHR object.",
-            "itemtype": "method",
-            "name": "request",
-            "params": [
-                {
-                    "name": "inOptions",
-                    "description": "",
-                    "type": "Object",
-                    "props": [
-                        {
-                            "name": "url",
-                            "description": "The url to which the request is sent.",
-                            "type": "String"
-                        },
-                        {
-                            "name": "method",
-                            "description": "The HTTP method to use, default is GET.",
-                            "type": "String"
-                        },
-                        {
-                            "name": "sync",
-                            "description": "By default, all requests are sent asynchronously.\n       To send synchronous requests, set to true.",
-                            "type": "Boolean"
-                        },
-                        {
-                            "name": "params",
-                            "description": "Data to be sent to the server.",
-                            "type": "Object"
-                        },
-                        {
-                            "name": "body",
-                            "description": "The content for the request body for POST method.",
-                            "type": "Object"
-                        },
-                        {
-                            "name": "headers",
-                            "description": "HTTP request headers.",
-                            "type": "Object"
-                        },
-                        {
-                            "name": "responseType",
-                            "description": "The response type. Default is 'text'.",
-                            "type": "String"
-                        },
-                        {
-                            "name": "callback",
-                            "description": "Called when request is completed.",
-                            "type": "Object"
-                        }
-                    ]
-                }
-            ],
-            "return": {
-                "description": "XHR object.",
-                "type": "Object"
-            },
-            "class": "polymer-xhr",
-            "module": "Polymer Elements"
-        }
-    ],
-    "warnings": [
-        {
-            "message": "replacing incorrect tag: returns with return",
-            "line": " ..\\..\\polymer-ajax\\polymer-xhr.html:59"
-        }
-    ]
-}
\ No newline at end of file
diff --git a/bower_components/polymer-ajax/index.html b/bower_components/polymer-ajax/index.html
deleted file mode 100644
index 9bb2721..0000000
--- a/bower_components/polymer-ajax/index.html
+++ /dev/null
@@ -1,64 +0,0 @@
-<!doctype html>
-<html>
-<head>
-  <title>polymer api</title>
-  <style>
-    html, body {
-      font-family: Arial, sans-serif;
-      white-space: nowrap;
-      overflow: hidden;
-    }
-    [noviewer] [ifnoviewer] {
-      display: block;
-    }
-    [detector], [ifnoviewer], [noviewer] [ifviewer] {
-      display: none;
-    }
-    [ifviewer], [ifnoviewer] {
-      position: absolute;
-      top: 0;
-      right: 0;
-      bottom: 0;
-      left: 0;
-    }
-    iframe {
-      border: none;
-      margin: 0;
-      width: 100%;
-      height: 100%;
-    }
-    #remote {
-      position: absolute;
-      top: 0;
-      right: 0;
-    }
-  </style>
-  <script src="../platform/platform.js"></script>
-  <link rel="import" href="../polymer-home-page/polymer-home-page.html">
-</head>
-<body>
-  <img detector src="../polymer-home-page/bowager-logo.png" onerror="noviewer()">
-  <polymer-home-page ifviewer></polymer-home-page>
-  <div ifnoviewer>
-    <span id="remote">[remote]</span>
-    <iframe></iframe>
-  </div>
-  <!-- -->
-  <script>
-    var remoteDocs = 'http://turbogadgetry.com/bowertopia/components/';
-    // if no local info viewer, load it remotely
-    function noviewer() {
-      document.body.setAttribute('noviewer', '');
-      var path = location.pathname.split('/');
-      var module = path.pop() || path.pop();
-      document.querySelector('iframe').src = remoteDocs + module;
-      document.querySelector('title').textContent = module;
-    }
-    // for testing only
-    var opts = window.location.search;
-    if (opts.indexOf('noviewer') >= 0) {
-      noviewer();
-    }
-  </script>
-</body>
-</html>
\ No newline at end of file
diff --git a/bower_components/polymer-ajax/polymer-ajax.html b/bower_components/polymer-ajax/polymer-ajax.html
deleted file mode 100644
index 69222e9..0000000
--- a/bower_components/polymer-ajax/polymer-ajax.html
+++ /dev/null
@@ -1,256 +0,0 @@
-<!--
-Copyright 2013 The Polymer Authors. All rights reserved.
-Use of this source code is governed by a BSD-style
-license that can be found in the LICENSE file.
--->
-<!--
-/**
- * @module Polymer Elements
- */
- 
-/**
- * The `polymer-ajax` element performs `XMLHttpRequest`s.
- * 
- * You can trigger a request explicitly by calling `go` on the
- * element. 
- * 
- * With `auto` set to `true`, the element performs a request whenever
- * its `url` or `params` properties are changed.
- * 
- *
- * Example:
- *
- *     <polymer-ajax auto url="http://gdata.youtube.com/feeds/api/videos/" 
- *         params='{"alt":"json", "q":"chrome"}'
- *         handleAs="json"
- *         on-polymer-response="{{handleResponse}}">
- *     </polymer-ajax>
- * 
- * Note: The `params` attribute must be double quoted JSON.
- *
- * @class polymer-ajax
- * @status beta
- * @homepage github.io
- *
- */
- 
-/**
- * Fired when a response is received.
- * 
- * @event polymer-response
- */
- 
-/**
- * Fired when an error is received.
- * 
- * @event polymer-error
- */
- 
-/**
- * Fired whenever a response or an error is received.
- *
- * @event polymer-complete
- */
- 
--->
-<link rel="import" href="../polymer/polymer.html">
-<link rel="import" href="polymer-xhr.html">
-
-<polymer-element name="polymer-ajax" attributes="url handleAs auto params response method headers body contentType">
-  <script>
-    Polymer('polymer-ajax', {
-      /**
-       * The URL target of the request.
-       * 
-       * @attribute url
-       * @type string
-       * @default ''
-       */
-      url: '',
-      /**
-       * Specifies what data to store in the `response` property, and
-       * to deliver as `event.response` in `response` events.
-       * 
-       * One of:
-       * 
-       *    `text`: uses `XHR.responseText`.
-       *    
-       *    `xml`: uses `XHR.responseXML`.
-       *    
-       *    `json`: uses `XHR.responseText` parsed as JSON.
-       *  
-       * @attribute handleAs
-       * @type string
-       * @default 'text'
-       */
-      handleAs: '',
-      /**
-       * If true, automatically performs an Ajax request when either `url` or `params` changes.
-       *
-       * @attribute auto
-       * @type boolean
-       * @default false
-       */
-      auto: false,
-      /**
-       * Parameters to send to the specified URL, as JSON.
-       *  
-       * @attribute params
-       * @type string (JSON)
-       * @default ''
-       */
-      params: '',
-      /**
-       * Returns the response object.
-       *
-       * @attribute response
-       * @type Object
-       * @default null
-       */
-      response: null,
-      /**
-       * The HTTP method to use such as 'GET', 'POST', 'PUT', or 'DELETE'.
-       * Default is 'GET'.
-       *
-       * @attribute method
-       * @type string
-       * @default ''
-       */
-      method: '',
-      /**
-       * HTTP request headers to send.
-       *
-       * Example:
-       *
-       *     <polymer-ajax auto url="http://somesite.com"
-       *         headers='{"X-Requested-With": "XMLHttpRequest"}'
-       *         handleAs="json"
-       *         on-polymer-response="{{handleResponse}}">
-       *     </polymer-ajax>
-       *  
-       * @attribute headers
-       * @type Object
-       * @default null
-       */
-      headers: null,
-      /**
-       * Optional raw body content to send when method === "POST".
-       *
-       * Example:
-       *
-       *     <polymer-ajax method="POST" auto url="http://somesite.com"
-       *         body='{"foo":1, "bar":2}'>
-       *     </polymer-ajax>
-       *  
-       * @attribute body
-       * @type Object
-       * @default null
-       */
-      body: null,
-      /**
-       * Content type to use when sending data.
-       *
-       * @attribute contentType
-       * @type string
-       * @default 'application/x-www-form-urlencoded'
-       */
-      contentType: 'application/x-www-form-urlencoded',
-      ready: function() {
-        this.xhr = document.createElement('polymer-xhr');
-      },
-      receive: function(response, xhr) {
-        if (this.isSuccess(xhr)) {
-          this.processResponse(xhr);
-        } else {
-          this.error(xhr);
-        }
-        this.complete(xhr);
-      },
-      isSuccess: function(xhr) {
-        var status = xhr.status || 0;
-        return !status || (status >= 200 && status < 300);
-      },
-      processResponse: function(xhr) {
-        var response = this.evalResponse(xhr);
-        this.response = response;
-        this.fire('polymer-response', {response: response, xhr: xhr});
-      },
-      error: function(xhr) {
-        var response = xhr.status + ': ' + xhr.responseText;
-        this.fire('polymer-error', {response: response, xhr: xhr});
-      },
-      complete: function(xhr) {
-        this.fire('polymer-complete', {response: xhr.status, xhr: xhr});
-      },
-      evalResponse: function(xhr) {
-        return this[(this.handleAs || 'text') + 'Handler'](xhr);
-      },
-      xmlHandler: function(xhr) {
-        return xhr.responseXML;
-      },
-      textHandler: function(xhr) {
-        return xhr.responseText;
-      },
-      jsonHandler: function(xhr) {
-        var r = xhr.responseText;
-        try {
-          return JSON.parse(r);
-        } catch (x) {
-          return r;
-        }
-      },
-      urlChanged: function() {
-        if (!this.handleAs) {
-          var ext = String(this.url).split('.').pop();
-          switch (ext) {
-            case 'json':
-              this.handleAs = 'json';
-              break;
-          }
-        }
-        this.autoGo();
-      },
-      paramsChanged: function() {
-        this.autoGo();
-      },
-      autoChanged: function() {
-        this.autoGo();
-      },
-      // TODO(sorvell): multiple side-effects could call autoGo 
-      // during one micro-task, use a job to have only one action 
-      // occur
-      autoGo: function() {
-        if (this.auto) {
-          this.goJob = this.job(this.goJob, this.go, 0);
-        }
-      },
-      /**
-       * Performs an Ajax request to the specified URL.
-       *
-       * @method go
-       */
-      go: function() {
-        var args = this.xhrArgs || {};
-        // TODO(sjmiles): alternatively, we could force POST if body is set
-        if (this.method === 'POST') {
-          args.body = this.body || args.body;
-        }
-        args.params = this.params || args.params;
-        if (args.params && typeof(args.params) == 'string') {
-          args.params = JSON.parse(args.params);
-        }
-        args.headers = this.headers || args.headers || {};
-        if (args.headers && typeof(args.headers) == 'string') {
-          args.headers = JSON.parse(args.headers);
-        }
-        if (this.contentType) {
-          args.headers['content-type'] = this.contentType;
-        }
-        args.callback = this.receive.bind(this);
-        args.url = this.url;
-        args.method = this.method;
-        return args.url && this.xhr.request(args);
-      }
-    });
-  </script>
-</polymer-element>
diff --git a/bower_components/polymer-ajax/polymer-xhr.html b/bower_components/polymer-ajax/polymer-xhr.html
deleted file mode 100644
index b5859d2..0000000
--- a/bower_components/polymer-ajax/polymer-xhr.html
+++ /dev/null
@@ -1,96 +0,0 @@
-<!--
-Copyright 2013 The Polymer Authors. All rights reserved.
-Use of this source code is governed by a BSD-style
-license that can be found in the LICENSE file.
--->
-<!--
-/**
- * @module Polymer Elements
- */
-/**
- * polymer-xhr can be used to perform XMLHttpRequests.
- 
- * Example:
- *
- *     <polymer-xhr id="xhr"></polymer-xhr>
- *     ...
- *     this.$.xhr.request({url: url, params: params, callback: callback});
- *
- * @class polymer-xhr
- */
--->
-<link rel="import" href="../polymer/polymer.html">
-
-<polymer-element name="polymer-xhr">
-  <template>
-    <style>
-      :host {
-        display: none;
-      }
-    </style>
-  </template>
-  <script>
-    Polymer('polymer-xhr', {
-      makeReadyStateHandler: function(xhr, callback) {
-        xhr.onreadystatechange = function() {
-          if (xhr.readyState == 4) {
-            callback && callback.call(null, xhr.response, xhr);
-          }
-        };
-      },
-      setRequestHeaders: function(xhr, headers) {
-        if (headers) {
-          for (var name in headers) {
-            xhr.setRequestHeader(name, headers[name]);
-          }
-        }
-      },
-      toQueryString: function(params) {
-        var r = [];
-        for (var n in params) {
-          var v = params[n];
-          n = encodeURIComponent(n);
-          r.push(v == null ? n : (n + '=' + encodeURIComponent(v)));
-        }
-        return r.join('&');
-      },
-      /**
-       * Sends a HTTP request to the server and returns the XHR object.
-       *
-       * @method request
-       * @param {Object} inOptions
-       *    @param {String} inOptions.url The url to which the request is sent.
-       *    @param {String} inOptions.method The HTTP method to use, default is GET.
-       *    @param {boolean} inOptions.sync By default, all requests are sent asynchronously.
-       *        To send synchronous requests, set to true.
-       *    @param {Object} inOptions.params Data to be sent to the server.
-       *    @param {Object} inOptions.body The content for the request body for POST method.
-       *    @param {Object} inOptions.headers HTTP request headers.
-       *    @param {String} inOptions.responseType The response type. Default is 'text'.
-       *    @param {Object} inOptions.callback Called when request is completed.
-       * @returns {Object} XHR object.
-       */
-      request: function(options) {
-        var xhr = new XMLHttpRequest();
-        var url = options.url;
-        var method = options.method || 'GET';
-        var async = !options.sync;
-        var params = this.toQueryString(options.params);
-        if (params && method == 'GET') {
-          url += (url.indexOf('?') > 0 ? '&' : '?') + params;
-        }
-        xhr.open(method, url, async);
-        if (options.responseType) {
-          xhr.responseType = options.responseType;
-        }
-        this.makeReadyStateHandler(xhr, options.callback);
-        this.setRequestHeaders(xhr, options.headers);
-        xhr.send(method == 'POST' ? (options.body || params) : null);
-        if (!async) {
-          xhr.onreadystatechange(xhr);
-        }
-        return xhr;
-      }
-    });
-  </script>
-</polymer-element>
diff --git a/bower_components/polymer-ajax/test/html/polymer-ajax.html b/bower_components/polymer-ajax/test/html/polymer-ajax.html
deleted file mode 100644
index c244ada..0000000
--- a/bower_components/polymer-ajax/test/html/polymer-ajax.html
+++ /dev/null
@@ -1,30 +0,0 @@
-<!doctype html>
-<html>
-<head>
-  <title>polymer-ajax</title>
-  <script src="../../../platform/platform.js"></script>
-  <script src="../../../tools/test/htmltest.js"></script>
-  <script src="../../../tools/test/chai/chai.js"></script>
-  <link rel="import" href="../../polymer-ajax.html">
-</head>
-<body>
-
-  <polymer-ajax 
-    url="http://gdata.youtube.com/feeds/api/videos/"
-    params='{"alt":"json", "q":"chrome"}'
-    handleAs="json"
-    auto
-  ></polymer-ajax>
-
-  <script>
-    var assert = chai.assert;
-    document.addEventListener('polymer-ready', function() {
-      var ajax = document.querySelector('polymer-ajax');
-      ajax.addEventListener("polymer-response", function(event) {
-        assert.isTrue(event.detail.response.feed.entry.length > 0);
-        done();
-      });
-    });
-  </script>
-</body>
-</html>
diff --git a/bower_components/polymer-ajax/test/js/polymer-ajax.js b/bower_components/polymer-ajax/test/js/polymer-ajax.js
deleted file mode 100644
index e2b1590..0000000
--- a/bower_components/polymer-ajax/test/js/polymer-ajax.js
+++ /dev/null
@@ -1,9 +0,0 @@
-/*
- * Copyright 2013 The Polymer Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style
- * license that can be found in the LICENSE file.
- */
-
-htmlSuite('polymer-ajax', function() {
-  htmlTest('html/polymer-ajax.html');
-});
\ No newline at end of file
diff --git a/bower_components/polymer-ajax/test/runner.html b/bower_components/polymer-ajax/test/runner.html
deleted file mode 100644
index 01e54dd..0000000
--- a/bower_components/polymer-ajax/test/runner.html
+++ /dev/null
@@ -1,31 +0,0 @@
-<!DOCTYPE html>
-<!--
-Copyright 2013 The Polymer Authors. All rights reserved.
-Use of this source code is governed by a BSD-style
-license that can be found in the LICENSE file.
--->
-<html>
-  <head>
-    <title>polymer-ajax Test Runner (Mocha)</title>
-    <meta charset="UTF-8">
-    <!-- -->
-    <link rel="stylesheet" href="../../tools/test/mocha/mocha.css" />
-    <script src="../../tools/test/mocha/mocha.js"></script>
-    <script src="../../tools/test/chai/chai.js"></script>
-    <script src="../../tools/test/mocha-htmltest.js"></script>
-    <!-- -->
-    <script src="../../platform/platform.js"></script>
-  </head>
-  <body>
-    <div id="mocha"></div>
-    <script>
-      mocha.setup({ui: 'tdd', slow: 1000, htmlbase: ''});
-    </script>
-    <!-- -->
-    <script src="js/polymer-ajax.js"></script>
-    <!-- -->
-    <script>
-      mocha.run();
-    </script>
-  </body>
-</html>
diff --git a/bower_components/polymer/.bower.json b/bower_components/polymer/.bower.json
index a8b358f..927990d 100644
--- a/bower_components/polymer/.bower.json
+++ b/bower_components/polymer/.bower.json
@@ -1,19 +1,32 @@
 {
   "name": "polymer",
+  "description": "Polymer is a new type of library for the web, built on top of Web Components, and designed to leverage the evolving web platform on modern browsers.",
+  "homepage": "http://www.polymer-project.org/",
+  "keywords": [
+    "util",
+    "client",
+    "browser",
+    "web components",
+    "web-components"
+  ],
+  "author": "Polymer Authors <polymer-dev@googlegroups.com>",
   "private": true,
   "dependencies": {
-    "platform": "Polymer/platform#0.2.3",
-    "core-component-page": "Polymer/core-component-page#0.2.3"
+    "core-component-page": "Polymer/core-component-page#^0.5.0",
+    "webcomponentsjs": "Polymer/webcomponentsjs#^0.5.0"
   },
-  "version": "0.2.3",
-  "homepage": "https://github.com/Polymer/polymer",
-  "_release": "0.2.3",
+  "devDependencies": {
+    "tools": "Polymer/tools#master",
+    "web-component-tester": "Polymer/web-component-tester#^1.4.2"
+  },
+  "version": "0.5.2",
+  "_release": "0.5.2",
   "_resolution": {
     "type": "version",
-    "tag": "0.2.3",
-    "commit": "a0632dc45fc02a60f70881f49a9d18d9987ea243"
+    "tag": "0.5.2",
+    "commit": "2a9ca53fa79ca09907e818f1adf806765409ec9c"
   },
   "_source": "git://github.com/Polymer/polymer.git",
-  "_target": "0.2.3",
+  "_target": "0.5.2",
   "_originalSource": "Polymer/polymer"
 }
\ No newline at end of file
diff --git a/bower_components/polymer/README.md b/bower_components/polymer/README.md
index 236a88c..2c03674 100644
--- a/bower_components/polymer/README.md
+++ b/bower_components/polymer/README.md
@@ -1,8 +1,6 @@
 # Polymer
 
-[![Analytics](https://ga-beacon.appspot.com/UA-39334307-2/Polymer/polymer/README)](https://github.com/igrigorik/ga-beacon)
-
-Build Status: [http://build.chromium.org/p/client.polymer/waterfall](http://build.chromium.org/p/client.polymer/waterfall)
+[![Polymer build status](http://www.polymer-project.org/build/polymer-dev/status.png "Polymer build status")](http://build.chromium.org/p/client.polymer/waterfall)
 
 ## Brief Overview
 
@@ -10,8 +8,14 @@ For more detailed info goto [http://polymer-project.org/](http://polymer-project
 
 Polymer is a new type of library for the web, designed to leverage the existing browser infrastructure to provide the encapsulation and extendability currently only available in JS libraries.
 
-Polymer is based on a set of future technologies, including [Shadow DOM](https://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html), [Custom Elements](https://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/custom/index.html) and Model Driven Views. Currently these technologies are implemented as polyfills or shims, but as browsers adopt these features natively, the platform code that drives Polymer evacipates, leaving only the value-adds.
+Polymer is based on a set of future technologies, including [Shadow DOM](http://w3c.github.io/webcomponents/spec/shadow/), [Custom Elements](http://w3c.github.io/webcomponents/spec/custom/) and Model Driven Views. Currently these technologies are implemented as polyfills or shims, but as browsers adopt these features natively, the platform code that drives Polymer evacipates, leaving only the value-adds.
 
 ## Tools & Testing
 
-For running tests or building minified files, consult the [tooling information](http://www.polymer-project.org/resources/tooling-strategy.html).
+For running tests or building minified files, consult the [tooling information](https://www.polymer-project.org/resources/tooling-strategy.html).
+
+## Releases
+
+[Release (tagged) versions](https://github.com/Polymer/polymer/releases) of Polymer include concatenated and minified sources for your convenience.
+
+[![Analytics](https://ga-beacon.appspot.com/UA-39334307-2/Polymer/polymer/README)](https://github.com/igrigorik/ga-beacon)
diff --git a/bower_components/polymer/bower.json b/bower_components/polymer/bower.json
index 2228aaf..a08bd2b 100644
--- a/bower_components/polymer/bower.json
+++ b/bower_components/polymer/bower.json
@@ -1,9 +1,23 @@
 {
   "name": "polymer",
+  "description": "Polymer is a new type of library for the web, built on top of Web Components, and designed to leverage the evolving web platform on modern browsers.",
+  "homepage": "http://www.polymer-project.org/",
+  "keywords": [
+    "util",
+    "client",
+    "browser",
+    "web components",
+    "web-components"
+  ],
+  "author": "Polymer Authors <polymer-dev@googlegroups.com>",
   "private": true,
   "dependencies": {
-    "platform": "Polymer/platform#0.2.3",
-    "core-component-page": "Polymer/core-component-page#0.2.3"
+    "core-component-page": "Polymer/core-component-page#^0.5.0",
+    "webcomponentsjs": "Polymer/webcomponentsjs#^0.5.0"
   },
-  "version": "0.2.3"
+  "devDependencies": {
+    "tools": "Polymer/tools#master",
+    "web-component-tester": "Polymer/web-component-tester#^1.4.2"
+  },
+  "version": "0.5.2"
 }
\ No newline at end of file
diff --git a/bower_components/polymer/build.log b/bower_components/polymer/build.log
index b3dff20..e72f5be 100644
--- a/bower_components/polymer/build.log
+++ b/bower_components/polymer/build.log
@@ -1,33 +1,25 @@
 BUILD LOG
 ---------
-Build Time: 2014-04-18T13:26:52
+Build Time: 2014-12-11T12:46:30
 
 NODEJS INFORMATION
 ==================
-nodejs: v0.10.26
-chai: 1.9.1
-grunt: 0.4.4
-grunt-audit: 0.0.3
-grunt-contrib-uglify: 0.4.0
-grunt-contrib-yuidoc: 0.5.2
-grunt-karma: 0.8.2
-karma: 0.12.2
-karma-chrome-launcher: 0.0.2
-karma-crbot-reporter: 0.0.4
-karma-firefox-launcher: 0.1.3
-karma-ie-launcher: 0.1.3
-karma-mocha: 0.1.3
-karma-safari-launcher: 0.1.1
-karma-script-launcher: 0.1.0
-mocha: 1.18.2
-Polymer: 0.2.3
+nodejs: v0.10.33
+grunt: 0.4.5
+grunt-audit: 1.0.0
+grunt-contrib-concat: 0.5.0
+grunt-contrib-copy: 0.7.0
+grunt-contrib-uglify: 0.6.0
+grunt-string-replace: 1.0.0
 
 REPO REVISIONS
 ==============
-polymer-expressions: 3bd624bbdc1de09085524529e7f259d3cac084ae
-polymer-gestures: f16090bbb8e3d08d912f33f4a1e554e56e7ba55a
-polymer-dev: 24c48ff7ae443e69dd2ee60b0f23d55753ae96cd
+polymer-expressions: 197c3a0150e7a13374cfcc72e7066113723a623d
+polymer-gestures: 17a6304916521be39409af292e8adf899bae0ce7
+polymer: a74e9f36526361dccb6df91be439ff9c3e043f41
 
 BUILD HASHES
 ============
-build/polymer.js: ef8cd13c151e94688aa961e695b6c1ea473475d5
\ No newline at end of file
+dist/polymer.js: b9ad4c86af79c748cf4ea722f6d56671079fadf7
+dist/polymer.min.js: 2f2021ba9682b0bb702ee7fb68fb6fbfd288eac2
+dist/layout.html: 348d358a91712ecc2f8811efa430fcd954b4590c
\ No newline at end of file
diff --git a/bower_components/polymer/layout.html b/bower_components/polymer/layout.html
new file mode 100644
index 0000000..55d4d2f
--- /dev/null
+++ b/bower_components/polymer/layout.html
@@ -0,0 +1,286 @@
+<!--
+Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+Code distributed by Google as part of the polymer project is also
+subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+-->
+<style shim-shadowdom>
+/*******************************
+          Flex Layout
+*******************************/
+
+html /deep/ [layout][horizontal], html /deep/ [layout][vertical] {
+  display: -ms-flexbox;
+  display: -webkit-flex;
+  display: flex;
+}
+
+html /deep/ [layout][horizontal][inline], html /deep/ [layout][vertical][inline] {
+  display: -ms-inline-flexbox;
+  display: -webkit-inline-flex;
+  display: inline-flex;
+}
+
+html /deep/ [layout][horizontal] {
+  -ms-flex-direction: row;
+  -webkit-flex-direction: row;
+  flex-direction: row;
+}
+
+html /deep/ [layout][horizontal][reverse] {
+  -ms-flex-direction: row-reverse;
+  -webkit-flex-direction: row-reverse;
+  flex-direction: row-reverse;
+}
+
+html /deep/ [layout][vertical] {
+  -ms-flex-direction: column;
+  -webkit-flex-direction: column;
+  flex-direction: column;
+}
+
+html /deep/ [layout][vertical][reverse] {
+  -ms-flex-direction: column-reverse;
+  -webkit-flex-direction: column-reverse;
+  flex-direction: column-reverse;
+}
+
+html /deep/ [layout][wrap] {
+  -ms-flex-wrap: wrap;
+  -webkit-flex-wrap: wrap;
+  flex-wrap: wrap;
+}
+
+html /deep/ [layout][wrap-reverse] {
+  -ms-flex-wrap: wrap-reverse;
+  -webkit-flex-wrap: wrap-reverse;
+  flex-wrap: wrap-reverse;
+}
+
+html /deep/ [flex] {
+  -ms-flex: 1 1 0.000000001px;
+  -webkit-flex: 1;
+  flex: 1;
+  -webkit-flex-basis: 0.000000001px;
+  flex-basis: 0.000000001px;
+}
+
+html /deep/ [vertical][layout] > [flex][auto-vertical], html /deep/ [vertical][layout]::shadow [flex][auto-vertical] {
+  -ms-flex: 1 1 auto;
+  -webkit-flex-basis: auto;
+  flex-basis: auto;
+}
+
+html /deep/ [flex][auto] {
+  -ms-flex: 1 1 auto;
+  -webkit-flex-basis: auto;
+  flex-basis: auto;
+}
+
+html /deep/ [flex][none] {
+  -ms-flex: none;
+  -webkit-flex: none;
+  flex: none;
+}
+
+html /deep/ [flex][one] {
+  -ms-flex: 1;
+  -webkit-flex: 1;
+  flex: 1;
+}
+
+html /deep/ [flex][two] {
+  -ms-flex: 2;
+  -webkit-flex: 2;
+  flex: 2;
+}
+
+html /deep/ [flex][three] {
+  -ms-flex: 3;
+  -webkit-flex: 3;
+  flex: 3;
+}
+
+html /deep/ [flex][four] {
+  -ms-flex: 4;
+  -webkit-flex: 4;
+  flex: 4;
+}
+
+html /deep/ [flex][five] {
+  -ms-flex: 5;
+  -webkit-flex: 5;
+  flex: 5;
+}
+
+html /deep/ [flex][six] {
+  -ms-flex: 6;
+  -webkit-flex: 6;
+  flex: 6;
+}
+
+html /deep/ [flex][seven] {
+  -ms-flex: 7;
+  -webkit-flex: 7;
+  flex: 7;
+}
+
+html /deep/ [flex][eight] {
+  -ms-flex: 8;
+  -webkit-flex: 8;
+  flex: 8;
+}
+
+html /deep/ [flex][nine] {
+  -ms-flex: 9;
+  -webkit-flex: 9;
+  flex: 9;
+}
+
+html /deep/ [flex][ten] {
+  -ms-flex: 10;
+  -webkit-flex: 10;
+  flex: 10;
+}
+
+html /deep/ [flex][eleven] {
+  -ms-flex: 11;
+  -webkit-flex: 11;
+  flex: 11;
+}
+
+html /deep/ [flex][twelve] {
+  -ms-flex: 12;
+  -webkit-flex: 12;
+  flex: 12;
+}
+
+/* alignment in cross axis */
+
+html /deep/ [layout][start] {
+  -ms-flex-align: start;
+  -webkit-align-items: flex-start;
+  align-items: flex-start;
+}
+
+html /deep/ [layout][center], html /deep/ [layout][center-center] {
+  -ms-flex-align: center;
+  -webkit-align-items: center;
+  align-items: center;
+}
+
+html /deep/ [layout][end] {
+  -ms-flex-align: end;
+  -webkit-align-items: flex-end;
+  align-items: flex-end;
+}
+
+/* alignment in main axis */
+
+html /deep/ [layout][start-justified] {
+  -ms-flex-pack: start;
+  -webkit-justify-content: flex-start;
+  justify-content: flex-start;
+}
+
+html /deep/ [layout][center-justified], html /deep/ [layout][center-center] {
+  -ms-flex-pack: center;
+  -webkit-justify-content: center;
+  justify-content: center;
+}
+
+html /deep/ [layout][end-justified] {
+  -ms-flex-pack: end;
+  -webkit-justify-content: flex-end;
+  justify-content: flex-end;
+}
+
+html /deep/ [layout][around-justified] {
+  -ms-flex-pack: distribute;
+  -webkit-justify-content: space-around;
+  justify-content: space-around;
+}
+
+html /deep/ [layout][justified] {
+  -ms-flex-pack: justify;
+  -webkit-justify-content: space-between;
+  justify-content: space-between;
+}
+
+/* self alignment */
+
+html /deep/ [self-start] {
+  -ms-align-self: flex-start;
+  -webkit-align-self: flex-start;
+  align-self: flex-start;
+}
+
+html /deep/ [self-center] {
+  -ms-align-self: center;
+  -webkit-align-self: center;
+  align-self: center;
+}
+
+html /deep/ [self-end] {
+  -ms-align-self: flex-end;
+  -webkit-align-self: flex-end;
+  align-self: flex-end;
+}
+
+html /deep/ [self-stretch] {
+  -ms-align-self: stretch;
+  -webkit-align-self: stretch;
+  align-self: stretch;
+}
+
+/*******************************
+          Other Layout
+*******************************/
+
+html /deep/ [block] {
+  display: block;
+}
+
+/* ie support for hidden */
+html /deep/ [hidden] {
+  display: none !important;
+}
+
+html /deep/ [relative] {
+  position: relative;
+}
+
+html /deep/ [fit] {
+  position: absolute;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  left: 0;
+}
+
+body[fullbleed] {
+  margin: 0;
+  height: 100vh;
+}
+
+/*******************************
+            Other
+*******************************/
+
+html /deep/ [segment], html /deep/ segment {
+  display: block;
+  position: relative;
+  -webkit-box-sizing: border-box;
+  -ms-box-sizing: border-box;
+  box-sizing: border-box;
+  margin: 1em 0.5em;
+  padding: 1em;
+  background-color: white;
+  -webkit-box-shadow: 0px 0px 0px 1px rgba(0, 0, 0, 0.1);
+  box-shadow: 0px 0px 0px 1px rgba(0, 0, 0, 0.1);
+  border-radius: 5px 5px 5px 5px;
+}
+
+</style>
\ No newline at end of file
diff --git a/bower_components/polymer/polymer-body.html b/bower_components/polymer/polymer-body.html
deleted file mode 100644
index a9a7525..0000000
--- a/bower_components/polymer/polymer-body.html
+++ /dev/null
@@ -1,40 +0,0 @@
-<!--
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
--->
-
-<polymer-element name="polymer-body" extends="body">
-<script>
-
-  // upgrade polymer-body last so that it can contain other imported elements
-  document.addEventListener('polymer-ready', function() {
-
-    Polymer('polymer-body', Platform.mixin({
-
-      created: function() {
-        this.template = document.createElement('template');
-        var body = wrap(document).body;
-        var c$ = body.childNodes.array();
-        for (var i=0, c; (c=c$[i]); i++) {
-          if (c.localName !== 'script') {
-            this.template.content.appendChild(c);
-          }
-        }
-        // snarf up user defined model
-        window.model = this;
-      },
-
-      parseDeclaration: function(elementElement) {
-        this.lightFromTemplate(this.template);
-      }
-
-    }, window.model));
-
-  });
-
-</script>
-</polymer-element>
\ No newline at end of file
diff --git a/bower_components/polymer/polymer.html b/bower_components/polymer/polymer.html
index e9cb9c3..7e3d8f1 100644
--- a/bower_components/polymer/polymer.html
+++ b/bower_components/polymer/polymer.html
@@ -7,7 +7,6 @@
 subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
 -->
 
-<script src="polymer.js"></script>
-<!--<link rel="import" href="../polymer-dev/polymer.html">--> 
+<link rel="import" href="layout.html">
 
-<link rel="import" href="polymer-body.html">
\ No newline at end of file
+<script src="polymer.js"></script>
diff --git a/bower_components/polymer/polymer.js b/bower_components/polymer/polymer.js
index a279e88..2d3b692 100644
--- a/bower_components/polymer/polymer.js
+++ b/bower_components/polymer/polymer.js
@@ -7,7 +7,11845 @@
  * Code distributed by Google as part of the polymer project is also
  * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
  */
-// @version: 0.2.3
-window.PolymerGestures={},function(a){var b={shadow:function(a){return a?a.shadowRoot||a.webkitShadowRoot:void 0},canTarget:function(a){return a&&Boolean(a.elementFromPoint)},targetingShadow:function(a){var b=this.shadow(a);return this.canTarget(b)?b:void 0},olderShadow:function(a){var b=a.olderShadowRoot;if(!b){var c=a.querySelector("shadow");c&&(b=c.olderShadowRoot)}return b},allShadows:function(a){for(var b=[],c=this.shadow(a);c;)b.push(c),c=this.olderShadow(c);return b},searchRoot:function(a,b,c){if(a){var d,e,f=a.elementFromPoint(b,c);for(e=this.targetingShadow(f);e;){if(d=e.elementFromPoint(b,c)){var g=this.targetingShadow(d);return this.searchRoot(g,b,c)||d}e=this.olderShadow(e)}return f}},owner:function(a){if(!a)return document;for(var b=a;b.parentNode;)b=b.parentNode;return b.nodeType!=Node.DOCUMENT_NODE&&b.nodeType!=Node.DOCUMENT_FRAGMENT_NODE&&(b=document),b},findTarget:function(a){var b=a.clientX,c=a.clientY,d=this.owner(a.target);return d.elementFromPoint(b,c)||(d=document),this.searchRoot(d,b,c)},LCA:function(a,b){if(a===b)return a;if(a.contains){if(a.contains(b))return a;if(b.contains(a))return b}var c=this.depth(a),d=this.depth(b),e=c-d;for(e>0?a=this.walk(a,e):b=this.walk(b,-e);a&&b&&a!==b;)a=this.walk(a,1),b=this.walk(b,1);return a},walk:function(a,b){for(var c=0;a&&b>c;c++)a=a.parentNode||a.host;return a},depth:function(a){for(var b=0;a;)b++,a=a.parentNode||a.host;return b},deepContains:function(a,b){var c=this.LCA(a,b);return c===a},insideNode:function(a,b,c){var d=a.getBoundingClientRect();return d.left<=b&&b<=d.right&&d.top<=c&&c<=d.bottom}};a.targetFinding=b,a.findTarget=b.findTarget.bind(b),a.deepContains=b.deepContains.bind(b),a.insideNode=b.insideNode}(window.PolymerGestures),function(){function a(a){return"body /deep/ "+b(a)}function b(a){return'[touch-action="'+a+'"]'}function c(a){return"{ -ms-touch-action: "+a+"; touch-action: "+a+";}"}var d=["none","auto","pan-x","pan-y",{rule:"pan-x pan-y",selectors:["pan-x pan-y","pan-y pan-x"]}],e="",f=(document.head,"string"==typeof document.head.style.touchAction),g=!window.ShadowDOMPolyfill&&document.head.createShadowRoot;if(f){d.forEach(function(d){String(d)===d?(e+=b(d)+c(d)+"\n",g&&(e+=a(d)+c(d)+"\n")):(e+=d.selectors.map(b)+c(d.rule)+"\n",g&&(e+=d.selectors.map(a)+c(d.rule)+"\n"))});var h=document.createElement("style");h.textContent=e,document.head.appendChild(h)}}(),function(a){var b=["bubbles","cancelable","view","detail","screenX","screenY","clientX","clientY","ctrlKey","altKey","shiftKey","metaKey","button","relatedTarget","pageX","pageY"],c=[!1,!1,null,null,0,0,0,0,!1,!1,!1,!1,0,null,0,0],d=function(){return function(){}},e={preventTap:d,makeBaseEvent:function(a,b){var c=document.createEvent("Event");return c.initEvent(a,b.bubbles||!1,b.cancelable||!1),c.preventTap=e.preventTap(c),c},makeGestureEvent:function(a,b){b=b||Object.create(null);for(var c,d=this.makeBaseEvent(a,b),e=0,f=Object.keys(b);e<f.length;e++)c=f[e],d[c]=b[c];return d},makePointerEvent:function(a,d){d=d||Object.create(null);for(var e,f=this.makeBaseEvent(a,d),g=0;g<b.length;g++)e=b[g],f[e]=d[e]||c[g];f.buttons=d.buttons||0;var h=0;return h=d.pressure?d.pressure:f.buttons?.5:0,f.x=f.clientX,f.y=f.clientY,f.pointerId=d.pointerId||0,f.width=d.width||0,f.height=d.height||0,f.pressure=h,f.tiltX=d.tiltX||0,f.tiltY=d.tiltY||0,f.pointerType=d.pointerType||"",f.hwTimestamp=d.hwTimestamp||0,f.isPrimary=d.isPrimary||!1,f}};a.eventFactory=e}(window.PolymerGestures),function(a){function b(){if(c){var a=new Map;return a.pointers=d,a}this.keys=[],this.values=[]}var c=window.Map&&window.Map.prototype.forEach,d=function(){return this.size};b.prototype={set:function(a,b){var c=this.keys.indexOf(a);c>-1?this.values[c]=b:(this.keys.push(a),this.values.push(b))},has:function(a){return this.keys.indexOf(a)>-1},"delete":function(a){var b=this.keys.indexOf(a);b>-1&&(this.keys.splice(b,1),this.values.splice(b,1))},get:function(a){var b=this.keys.indexOf(a);return this.values[b]},clear:function(){this.keys.length=0,this.values.length=0},forEach:function(a,b){this.values.forEach(function(c,d){a.call(b,c,this.keys[d],this)},this)},pointers:function(){return this.keys.length}},a.PointerMap=b}(window.PolymerGestures),function(a){var b=["bubbles","cancelable","view","detail","screenX","screenY","clientX","clientY","ctrlKey","altKey","shiftKey","metaKey","button","relatedTarget","buttons","pointerId","width","height","pressure","tiltX","tiltY","pointerType","hwTimestamp","isPrimary","type","target","currentTarget","which","pageX","pageY","timeStamp","preventTap","tapPrevented"],c=[!1,!1,null,null,0,0,0,0,!1,!1,!1,!1,0,null,0,0,0,0,0,0,0,"",0,!1,"",null,null,0,0,0,0,function(){},!1],d="undefined"!=typeof SVGElementInstance,e=a.eventFactory,f={pointermap:new a.PointerMap,eventMap:Object.create(null),eventSources:Object.create(null),eventSourceList:[],gestures:[],gestureQueue:[],registerSource:function(a,b){var c=b,d=c.events;d&&(d.forEach(function(a){c[a]&&(this.eventMap[a]=c[a].bind(c))},this),this.eventSources[a]=c,this.eventSourceList.push(c))},registerGesture:function(a,b){this.gestures.push(b)},register:function(a){for(var b,c=this.eventSourceList.length,d=0;c>d&&(b=this.eventSourceList[d]);d++)b.register.call(b,a)},unregister:function(a){for(var b,c=this.eventSourceList.length,d=0;c>d&&(b=this.eventSourceList[d]);d++)b.unregister.call(b,a)},down:function(a){this.fireEvent("down",a)},move:function(a){a.type="move",this.fillGestureQueue(a)},up:function(a){this.fireEvent("up",a)},eventHandler:function(a){if(!a._handledByPG){var 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MutationObserver(function(a){b.call(this,c,a),c.disconnect()}.bind(this));c.observe(a,{childList:!0,subtree:!0})}};c.prototype=d,d.constructor=c,a.Base=c,a.isBase=b,a.api.instance.base=d}(Polymer),function(a){function b(a){return a.__proto__}function c(a,b){var c="",d=!1;b&&(c=b.localName,d=b.hasAttribute("is"));var e=Platform.ShadowCSS.makeScopeSelector(c,d);return Platform.ShadowCSS.shimCssText(a,e)}var d=(window.logFlags||{},"element"),e="controller",f={STYLE_SCOPE_ATTRIBUTE:d,installControllerStyles:function(){var a=this.findStyleScope();if(a&&!this.scopeHasNamedStyle(a,this.localName)){for(var c=b(this),d="";c&&c.element;)d+=c.element.cssTextForScope(e),c=b(c);d&&this.installScopeCssText(d,a)}},installScopeStyle:function(a,b,c){var c=c||this.findStyleScope(),b=b||"";if(c&&!this.scopeHasNamedStyle(c,this.localName+b)){var d="";if(a instanceof Array)for(var e,f=0,g=a.length;g>f&&(e=a[f]);f++)d+=e.textContent+"\n\n";else 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d=a.extend,e=a.api,f=a.queue,g=a.whenPolymerReady,h=a.getRegisteredPrototype,i=a.waitingForPrototype,j=d(Object.create(HTMLElement.prototype),{createdCallback:function(){this.getAttribute("name")&&this.init()},init:function(){this.name=this.getAttribute("name"),this.extends=this.getAttribute("extends"),this.loadResources(),this.registerWhenReady()},registerWhenReady:function(){this.registered||this.waitingForPrototype(this.name)||this.waitingForQueue()||this.waitingForResources()||f.go(this)},_register:function(){c(this.extends)&&!b(this.extends)&&console.warn("%s is attempting to extend %s, an unregistered element or one that was not registered with Polymer.",this.name,this.extends),this.register(this.name,this.extends),this.registered=!0},waitingForPrototype:function(a){return h(a)?void 0:(i(a,this),this.handleNoScript(a),!0)},handleNoScript:function(a){if(this.hasAttribute("noscript")&&!this.noscript)if(this.noscript=!0,window.CustomElements&&!CustomElements.useNative)Polymer(a);else{var b=document.createElement("script");b.textContent="Polymer('"+a+"');",this.appendChild(b)}},waitingForResources:function(){return this._needsResources},waitingForQueue:function(){return f.wait(this,this.registerWhenReady,this._register)},loadResources:function(){this._needsResources=!0,this.loadStyles(function(){this._needsResources=!1,this.registerWhenReady()}.bind(this))}});e.publish(e.declaration,j),g(function(){document.body.removeAttribute("unresolved"),document.dispatchEvent(new CustomEvent("polymer-ready",{bubbles:!0}))}),document.registerElement("polymer-element",{prototype:j})}(Polymer);
-//# sourceMappingURL=polymer.js.map
\ No newline at end of file
+// @version 0.5.1
+window.PolymerGestures = {};
+
+(function(scope) {
+  var HAS_FULL_PATH = false;
+
+  // test for full event path support
+  var pathTest = document.createElement('meta');
+  if (pathTest.createShadowRoot) {
+    var sr = pathTest.createShadowRoot();
+    var s = document.createElement('span');
+    sr.appendChild(s);
+    pathTest.addEventListener('testpath', function(ev) {
+      if (ev.path) {
+        // if the span is in the event path, then path[0] is the real source for all events
+        HAS_FULL_PATH = ev.path[0] === s;
+      }
+      ev.stopPropagation();
+    });
+    var ev = new CustomEvent('testpath', {bubbles: true});
+    // must add node to DOM to trigger event listener
+    document.head.appendChild(pathTest);
+    s.dispatchEvent(ev);
+    pathTest.parentNode.removeChild(pathTest);
+    sr = s = null;
+  }
+  pathTest = null;
+
+  var target = {
+    shadow: function(inEl) {
+      if (inEl) {
+        return inEl.shadowRoot || inEl.webkitShadowRoot;
+      }
+    },
+    canTarget: function(shadow) {
+      return shadow && Boolean(shadow.elementFromPoint);
+    },
+    targetingShadow: function(inEl) {
+      var s = this.shadow(inEl);
+      if (this.canTarget(s)) {
+        return s;
+      }
+    },
+    olderShadow: function(shadow) {
+      var os = shadow.olderShadowRoot;
+      if (!os) {
+        var se = shadow.querySelector('shadow');
+        if (se) {
+          os = se.olderShadowRoot;
+        }
+      }
+      return os;
+    },
+    allShadows: function(element) {
+      var shadows = [], s = this.shadow(element);
+      while(s) {
+        shadows.push(s);
+        s = this.olderShadow(s);
+      }
+      return shadows;
+    },
+    searchRoot: function(inRoot, x, y) {
+      var t, st, sr, os;
+      if (inRoot) {
+        t = inRoot.elementFromPoint(x, y);
+        if (t) {
+          // found element, check if it has a ShadowRoot
+          sr = this.targetingShadow(t);
+        } else if (inRoot !== document) {
+          // check for sibling roots
+          sr = this.olderShadow(inRoot);
+        }
+        // search other roots, fall back to light dom element
+        return this.searchRoot(sr, x, y) || t;
+      }
+    },
+    owner: function(element) {
+      if (!element) {
+        return document;
+      }
+      var s = element;
+      // walk up until you hit the shadow root or document
+      while (s.parentNode) {
+        s = s.parentNode;
+      }
+      // the owner element is expected to be a Document or ShadowRoot
+      if (s.nodeType != Node.DOCUMENT_NODE && s.nodeType != Node.DOCUMENT_FRAGMENT_NODE) {
+        s = document;
+      }
+      return s;
+    },
+    findTarget: function(inEvent) {
+      if (HAS_FULL_PATH && inEvent.path && inEvent.path.length) {
+        return inEvent.path[0];
+      }
+      var x = inEvent.clientX, y = inEvent.clientY;
+      // if the listener is in the shadow root, it is much faster to start there
+      var s = this.owner(inEvent.target);
+      // if x, y is not in this root, fall back to document search
+      if (!s.elementFromPoint(x, y)) {
+        s = document;
+      }
+      return this.searchRoot(s, x, y);
+    },
+    findTouchAction: function(inEvent) {
+      var n;
+      if (HAS_FULL_PATH && inEvent.path && inEvent.path.length) {
+        var path = inEvent.path;
+        for (var i = 0; i < path.length; i++) {
+          n = path[i];
+          if (n.nodeType === Node.ELEMENT_NODE && n.hasAttribute('touch-action')) {
+            return n.getAttribute('touch-action');
+          }
+        }
+      } else {
+        n = inEvent.target;
+        while(n) {
+          if (n.nodeType === Node.ELEMENT_NODE && n.hasAttribute('touch-action')) {
+            return n.getAttribute('touch-action');
+          }
+          n = n.parentNode || n.host;
+        }
+      }
+      // auto is default
+      return "auto";
+    },
+    LCA: function(a, b) {
+      if (a === b) {
+        return a;
+      }
+      if (a && !b) {
+        return a;
+      }
+      if (b && !a) {
+        return b;
+      }
+      if (!b && !a) {
+        return document;
+      }
+      // fast case, a is a direct descendant of b or vice versa
+      if (a.contains && a.contains(b)) {
+        return a;
+      }
+      if (b.contains && b.contains(a)) {
+        return b;
+      }
+      var adepth = this.depth(a);
+      var bdepth = this.depth(b);
+      var d = adepth - bdepth;
+      if (d >= 0) {
+        a = this.walk(a, d);
+      } else {
+        b = this.walk(b, -d);
+      }
+      while (a && b && a !== b) {
+        a = a.parentNode || a.host;
+        b = b.parentNode || b.host;
+      }
+      return a;
+    },
+    walk: function(n, u) {
+      for (var i = 0; n && (i < u); i++) {
+        n = n.parentNode || n.host;
+      }
+      return n;
+    },
+    depth: function(n) {
+      var d = 0;
+      while(n) {
+        d++;
+        n = n.parentNode || n.host;
+      }
+      return d;
+    },
+    deepContains: function(a, b) {
+      var common = this.LCA(a, b);
+      // if a is the common ancestor, it must "deeply" contain b
+      return common === a;
+    },
+    insideNode: function(node, x, y) {
+      var rect = node.getBoundingClientRect();
+      return (rect.left <= x) && (x <= rect.right) && (rect.top <= y) && (y <= rect.bottom);
+    },
+    path: function(event) {
+      var p;
+      if (HAS_FULL_PATH && event.path && event.path.length) {
+        p = event.path;
+      } else {
+        p = [];
+        var n = this.findTarget(event);
+        while (n) {
+          p.push(n);
+          n = n.parentNode || n.host;
+        }
+      }
+      return p;
+    }
+  };
+  scope.targetFinding = target;
+  /**
+   * Given an event, finds the "deepest" node that could have been the original target before ShadowDOM retargetting
+   *
+   * @param {Event} Event An event object with clientX and clientY properties
+   * @return {Element} The probable event origninator
+   */
+  scope.findTarget = target.findTarget.bind(target);
+  /**
+   * Determines if the "container" node deeply contains the "containee" node, including situations where the "containee" is contained by one or more ShadowDOM
+   * roots.
+   *
+   * @param {Node} container
+   * @param {Node} containee
+   * @return {Boolean}
+   */
+  scope.deepContains = target.deepContains.bind(target);
+
+  /**
+   * Determines if the x/y position is inside the given node.
+   *
+   * Example:
+   *
+   *     function upHandler(event) {
+   *       var innode = PolymerGestures.insideNode(event.target, event.clientX, event.clientY);
+   *       if (innode) {
+   *         // wait for tap?
+   *       } else {
+   *         // tap will never happen
+   *       }
+   *     }
+   *
+   * @param {Node} node
+   * @param {Number} x Screen X position
+   * @param {Number} y screen Y position
+   * @return {Boolean}
+   */
+  scope.insideNode = target.insideNode;
+
+})(window.PolymerGestures);
+
+(function() {
+  function shadowSelector(v) {
+    return 'html /deep/ ' + selector(v);
+  }
+  function selector(v) {
+    return '[touch-action="' + v + '"]';
+  }
+  function rule(v) {
+    return '{ -ms-touch-action: ' + v + '; touch-action: ' + v + ';}';
+  }
+  var attrib2css = [
+    'none',
+    'auto',
+    'pan-x',
+    'pan-y',
+    {
+      rule: 'pan-x pan-y',
+      selectors: [
+        'pan-x pan-y',
+        'pan-y pan-x'
+      ]
+    },
+    'manipulation'
+  ];
+  var styles = '';
+  // only install stylesheet if the browser has touch action support
+  var hasTouchAction = typeof document.head.style.touchAction === 'string';
+  // only add shadow selectors if shadowdom is supported
+  var hasShadowRoot = !window.ShadowDOMPolyfill && document.head.createShadowRoot;
+
+  if (hasTouchAction) {
+    attrib2css.forEach(function(r) {
+      if (String(r) === r) {
+        styles += selector(r) + rule(r) + '\n';
+        if (hasShadowRoot) {
+          styles += shadowSelector(r) + rule(r) + '\n';
+        }
+      } else {
+        styles += r.selectors.map(selector) + rule(r.rule) + '\n';
+        if (hasShadowRoot) {
+          styles += r.selectors.map(shadowSelector) + rule(r.rule) + '\n';
+        }
+      }
+    });
+
+    var el = document.createElement('style');
+    el.textContent = styles;
+    document.head.appendChild(el);
+  }
+})();
+
+/**
+ * This is the constructor for new PointerEvents.
+ *
+ * New Pointer Events must be given a type, and an optional dictionary of
+ * initialization properties.
+ *
+ * Due to certain platform requirements, events returned from the constructor
+ * identify as MouseEvents.
+ *
+ * @constructor
+ * @param {String} inType The type of the event to create.
+ * @param {Object} [inDict] An optional dictionary of initial event properties.
+ * @return {Event} A new PointerEvent of type `inType` and initialized with properties from `inDict`.
+ */
+(function(scope) {
+
+  var MOUSE_PROPS = [
+    'bubbles',
+    'cancelable',
+    'view',
+    'detail',
+    'screenX',
+    'screenY',
+    'clientX',
+    'clientY',
+    'ctrlKey',
+    'altKey',
+    'shiftKey',
+    'metaKey',
+    'button',
+    'relatedTarget',
+    'pageX',
+    'pageY'
+  ];
+
+  var MOUSE_DEFAULTS = [
+    false,
+    false,
+    null,
+    null,
+    0,
+    0,
+    0,
+    0,
+    false,
+    false,
+    false,
+    false,
+    0,
+    null,
+    0,
+    0
+  ];
+
+  var NOP_FACTORY = function(){ return function(){}; };
+
+  var eventFactory = {
+    // TODO(dfreedm): this is overridden by tap recognizer, needs review
+    preventTap: NOP_FACTORY,
+    makeBaseEvent: function(inType, inDict) {
+      var e = document.createEvent('Event');
+      e.initEvent(inType, inDict.bubbles || false, inDict.cancelable || false);
+      e.preventTap = eventFactory.preventTap(e);
+      return e;
+    },
+    makeGestureEvent: function(inType, inDict) {
+      inDict = inDict || Object.create(null);
+
+      var e = this.makeBaseEvent(inType, inDict);
+      for (var i = 0, keys = Object.keys(inDict), k; i < keys.length; i++) {
+        k = keys[i];
+        e[k] = inDict[k];
+      }
+      return e;
+    },
+    makePointerEvent: function(inType, inDict) {
+      inDict = inDict || Object.create(null);
+
+      var e = this.makeBaseEvent(inType, inDict);
+      // define inherited MouseEvent properties
+      for(var i = 0, p; i < MOUSE_PROPS.length; i++) {
+        p = MOUSE_PROPS[i];
+        e[p] = inDict[p] || MOUSE_DEFAULTS[i];
+      }
+      e.buttons = inDict.buttons || 0;
+
+      // Spec requires that pointers without pressure specified use 0.5 for down
+      // state and 0 for up state.
+      var pressure = 0;
+      if (inDict.pressure) {
+        pressure = inDict.pressure;
+      } else {
+        pressure = e.buttons ? 0.5 : 0;
+      }
+
+      // add x/y properties aliased to clientX/Y
+      e.x = e.clientX;
+      e.y = e.clientY;
+
+      // define the properties of the PointerEvent interface
+      e.pointerId = inDict.pointerId || 0;
+      e.width = inDict.width || 0;
+      e.height = inDict.height || 0;
+      e.pressure = pressure;
+      e.tiltX = inDict.tiltX || 0;
+      e.tiltY = inDict.tiltY || 0;
+      e.pointerType = inDict.pointerType || '';
+      e.hwTimestamp = inDict.hwTimestamp || 0;
+      e.isPrimary = inDict.isPrimary || false;
+      e._source = inDict._source || '';
+      return e;
+    }
+  };
+
+  scope.eventFactory = eventFactory;
+})(window.PolymerGestures);
+
+/**
+ * This module implements an map of pointer states
+ */
+(function(scope) {
+  var USE_MAP = window.Map && window.Map.prototype.forEach;
+  var POINTERS_FN = function(){ return this.size; };
+  function PointerMap() {
+    if (USE_MAP) {
+      var m = new Map();
+      m.pointers = POINTERS_FN;
+      return m;
+    } else {
+      this.keys = [];
+      this.values = [];
+    }
+  }
+
+  PointerMap.prototype = {
+    set: function(inId, inEvent) {
+      var i = this.keys.indexOf(inId);
+      if (i > -1) {
+        this.values[i] = inEvent;
+      } else {
+        this.keys.push(inId);
+        this.values.push(inEvent);
+      }
+    },
+    has: function(inId) {
+      return this.keys.indexOf(inId) > -1;
+    },
+    'delete': function(inId) {
+      var i = this.keys.indexOf(inId);
+      if (i > -1) {
+        this.keys.splice(i, 1);
+        this.values.splice(i, 1);
+      }
+    },
+    get: function(inId) {
+      var i = this.keys.indexOf(inId);
+      return this.values[i];
+    },
+    clear: function() {
+      this.keys.length = 0;
+      this.values.length = 0;
+    },
+    // return value, key, map
+    forEach: function(callback, thisArg) {
+      this.values.forEach(function(v, i) {
+        callback.call(thisArg, v, this.keys[i], this);
+      }, this);
+    },
+    pointers: function() {
+      return this.keys.length;
+    }
+  };
+
+  scope.PointerMap = PointerMap;
+})(window.PolymerGestures);
+
+(function(scope) {
+  var CLONE_PROPS = [
+    // MouseEvent
+    'bubbles',
+    'cancelable',
+    'view',
+    'detail',
+    'screenX',
+    'screenY',
+    'clientX',
+    'clientY',
+    'ctrlKey',
+    'altKey',
+    'shiftKey',
+    'metaKey',
+    'button',
+    'relatedTarget',
+    // DOM Level 3
+    'buttons',
+    // PointerEvent
+    'pointerId',
+    'width',
+    'height',
+    'pressure',
+    'tiltX',
+    'tiltY',
+    'pointerType',
+    'hwTimestamp',
+    'isPrimary',
+    // event instance
+    'type',
+    'target',
+    'currentTarget',
+    'which',
+    'pageX',
+    'pageY',
+    'timeStamp',
+    // gesture addons
+    'preventTap',
+    'tapPrevented',
+    '_source'
+  ];
+
+  var CLONE_DEFAULTS = [
+    // MouseEvent
+    false,
+    false,
+    null,
+    null,
+    0,
+    0,
+    0,
+    0,
+    false,
+    false,
+    false,
+    false,
+    0,
+    null,
+    // DOM Level 3
+    0,
+    // PointerEvent
+    0,
+    0,
+    0,
+    0,
+    0,
+    0,
+    '',
+    0,
+    false,
+    // event instance
+    '',
+    null,
+    null,
+    0,
+    0,
+    0,
+    0,
+    function(){},
+    false
+  ];
+
+  var HAS_SVG_INSTANCE = (typeof SVGElementInstance !== 'undefined');
+
+  var eventFactory = scope.eventFactory;
+
+  // set of recognizers to run for the currently handled event
+  var currentGestures;
+
+  /**
+   * This module is for normalizing events. Mouse and Touch events will be
+   * collected here, and fire PointerEvents that have the same semantics, no
+   * matter the source.
+   * Events fired:
+   *   - pointerdown: a pointing is added
+   *   - pointerup: a pointer is removed
+   *   - pointermove: a pointer is moved
+   *   - pointerover: a pointer crosses into an element
+   *   - pointerout: a pointer leaves an element
+   *   - pointercancel: a pointer will no longer generate events
+   */
+  var dispatcher = {
+    IS_IOS: false,
+    pointermap: new scope.PointerMap(),
+    requiredGestures: new scope.PointerMap(),
+    eventMap: Object.create(null),
+    // Scope objects for native events.
+    // This exists for ease of testing.
+    eventSources: Object.create(null),
+    eventSourceList: [],
+    gestures: [],
+    // map gesture event -> {listeners: int, index: gestures[int]}
+    dependencyMap: {
+      // make sure down and up are in the map to trigger "register"
+      down: {listeners: 0, index: -1},
+      up: {listeners: 0, index: -1}
+    },
+    gestureQueue: [],
+    /**
+     * Add a new event source that will generate pointer events.
+     *
+     * `inSource` must contain an array of event names named `events`, and
+     * functions with the names specified in the `events` array.
+     * @param {string} name A name for the event source
+     * @param {Object} source A new source of platform events.
+     */
+    registerSource: function(name, source) {
+      var s = source;
+      var newEvents = s.events;
+      if (newEvents) {
+        newEvents.forEach(function(e) {
+          if (s[e]) {
+            this.eventMap[e] = s[e].bind(s);
+          }
+        }, this);
+        this.eventSources[name] = s;
+        this.eventSourceList.push(s);
+      }
+    },
+    registerGesture: function(name, source) {
+      var obj = Object.create(null);
+      obj.listeners = 0;
+      obj.index = this.gestures.length;
+      for (var i = 0, g; i < source.exposes.length; i++) {
+        g = source.exposes[i].toLowerCase();
+        this.dependencyMap[g] = obj;
+      }
+      this.gestures.push(source);
+    },
+    register: function(element, initial) {
+      var l = this.eventSourceList.length;
+      for (var i = 0, es; (i < l) && (es = this.eventSourceList[i]); i++) {
+        // call eventsource register
+        es.register.call(es, element, initial);
+      }
+    },
+    unregister: function(element) {
+      var l = this.eventSourceList.length;
+      for (var i = 0, es; (i < l) && (es = this.eventSourceList[i]); i++) {
+        // call eventsource register
+        es.unregister.call(es, element);
+      }
+    },
+    // EVENTS
+    down: function(inEvent) {
+      this.requiredGestures.set(inEvent.pointerId, currentGestures);
+      this.fireEvent('down', inEvent);
+    },
+    move: function(inEvent) {
+      // pipe move events into gesture queue directly
+      inEvent.type = 'move';
+      this.fillGestureQueue(inEvent);
+    },
+    up: function(inEvent) {
+      this.fireEvent('up', inEvent);
+      this.requiredGestures.delete(inEvent.pointerId);
+    },
+    cancel: function(inEvent) {
+      inEvent.tapPrevented = true;
+      this.fireEvent('up', inEvent);
+      this.requiredGestures.delete(inEvent.pointerId);
+    },
+    addGestureDependency: function(node, currentGestures) {
+      var gesturesWanted = node._pgEvents;
+      if (gesturesWanted && currentGestures) {
+        var gk = Object.keys(gesturesWanted);
+        for (var i = 0, r, ri, g; i < gk.length; i++) {
+          // gesture
+          g = gk[i];
+          if (gesturesWanted[g] > 0) {
+            // lookup gesture recognizer
+            r = this.dependencyMap[g];
+            // recognizer index
+            ri = r ? r.index : -1;
+            currentGestures[ri] = true;
+          }
+        }
+      }
+    },
+    // LISTENER LOGIC
+    eventHandler: function(inEvent) {
+      // This is used to prevent multiple dispatch of events from
+      // platform events. This can happen when two elements in different scopes
+      // are set up to create pointer events, which is relevant to Shadow DOM.
+
+      var type = inEvent.type;
+
+      // only generate the list of desired events on "down"
+      if (type === 'touchstart' || type === 'mousedown' || type === 'pointerdown' || type === 'MSPointerDown') {
+        if (!inEvent._handledByPG) {
+          currentGestures = {};
+        }
+
+        // in IOS mode, there is only a listener on the document, so this is not re-entrant
+        if (this.IS_IOS) {
+          var ev = inEvent;
+          if (type === 'touchstart') {
+            var ct = inEvent.changedTouches[0];
+            // set up a fake event to give to the path builder
+            ev = {target: inEvent.target, clientX: ct.clientX, clientY: ct.clientY, path: inEvent.path};
+          }
+          // use event path if available, otherwise build a path from target finding
+          var nodes = inEvent.path || scope.targetFinding.path(ev);
+          for (var i = 0, n; i < nodes.length; i++) {
+            n = nodes[i];
+            this.addGestureDependency(n, currentGestures);
+          }
+        } else {
+          this.addGestureDependency(inEvent.currentTarget, currentGestures);
+        }
+      }
+
+      if (inEvent._handledByPG) {
+        return;
+      }
+      var fn = this.eventMap && this.eventMap[type];
+      if (fn) {
+        fn(inEvent);
+      }
+      inEvent._handledByPG = true;
+    },
+    // set up event listeners
+    listen: function(target, events) {
+      for (var i = 0, l = events.length, e; (i < l) && (e = events[i]); i++) {
+        this.addEvent(target, e);
+      }
+    },
+    // remove event listeners
+    unlisten: function(target, events) {
+      for (var i = 0, l = events.length, e; (i < l) && (e = events[i]); i++) {
+        this.removeEvent(target, e);
+      }
+    },
+    addEvent: function(target, eventName) {
+      target.addEventListener(eventName, this.boundHandler);
+    },
+    removeEvent: function(target, eventName) {
+      target.removeEventListener(eventName, this.boundHandler);
+    },
+    // EVENT CREATION AND TRACKING
+    /**
+     * Creates a new Event of type `inType`, based on the information in
+     * `inEvent`.
+     *
+     * @param {string} inType A string representing the type of event to create
+     * @param {Event} inEvent A platform event with a target
+     * @return {Event} A PointerEvent of type `inType`
+     */
+    makeEvent: function(inType, inEvent) {
+      var e = eventFactory.makePointerEvent(inType, inEvent);
+      e.preventDefault = inEvent.preventDefault;
+      e.tapPrevented = inEvent.tapPrevented;
+      e._target = e._target || inEvent.target;
+      return e;
+    },
+    // make and dispatch an event in one call
+    fireEvent: function(inType, inEvent) {
+      var e = this.makeEvent(inType, inEvent);
+      return this.dispatchEvent(e);
+    },
+    /**
+     * Returns a snapshot of inEvent, with writable properties.
+     *
+     * @param {Event} inEvent An event that contains properties to copy.
+     * @return {Object} An object containing shallow copies of `inEvent`'s
+     *    properties.
+     */
+    cloneEvent: function(inEvent) {
+      var eventCopy = Object.create(null), p;
+      for (var i = 0; i < CLONE_PROPS.length; i++) {
+        p = CLONE_PROPS[i];
+        eventCopy[p] = inEvent[p] || CLONE_DEFAULTS[i];
+        // Work around SVGInstanceElement shadow tree
+        // Return the <use> element that is represented by the instance for Safari, Chrome, IE.
+        // This is the behavior implemented by Firefox.
+        if (p === 'target' || p === 'relatedTarget') {
+          if (HAS_SVG_INSTANCE && eventCopy[p] instanceof SVGElementInstance) {
+            eventCopy[p] = eventCopy[p].correspondingUseElement;
+          }
+        }
+      }
+      // keep the semantics of preventDefault
+      eventCopy.preventDefault = function() {
+        inEvent.preventDefault();
+      };
+      return eventCopy;
+    },
+    /**
+     * Dispatches the event to its target.
+     *
+     * @param {Event} inEvent The event to be dispatched.
+     * @return {Boolean} True if an event handler returns true, false otherwise.
+     */
+    dispatchEvent: function(inEvent) {
+      var t = inEvent._target;
+      if (t) {
+        t.dispatchEvent(inEvent);
+        // clone the event for the gesture system to process
+        // clone after dispatch to pick up gesture prevention code
+        var clone = this.cloneEvent(inEvent);
+        clone.target = t;
+        this.fillGestureQueue(clone);
+      }
+    },
+    gestureTrigger: function() {
+      // process the gesture queue
+      for (var i = 0, e, rg; i < this.gestureQueue.length; i++) {
+        e = this.gestureQueue[i];
+        rg = e._requiredGestures;
+        if (rg) {
+          for (var j = 0, g, fn; j < this.gestures.length; j++) {
+            // only run recognizer if an element in the source event's path is listening for those gestures
+            if (rg[j]) {
+              g = this.gestures[j];
+              fn = g[e.type];
+              if (fn) {
+                fn.call(g, e);
+              }
+            }
+          }
+        }
+      }
+      this.gestureQueue.length = 0;
+    },
+    fillGestureQueue: function(ev) {
+      // only trigger the gesture queue once
+      if (!this.gestureQueue.length) {
+        requestAnimationFrame(this.boundGestureTrigger);
+      }
+      ev._requiredGestures = this.requiredGestures.get(ev.pointerId);
+      this.gestureQueue.push(ev);
+    }
+  };
+  dispatcher.boundHandler = dispatcher.eventHandler.bind(dispatcher);
+  dispatcher.boundGestureTrigger = dispatcher.gestureTrigger.bind(dispatcher);
+  scope.dispatcher = dispatcher;
+
+  /**
+   * Listen for `gesture` on `node` with the `handler` function
+   *
+   * If `handler` is the first listener for `gesture`, the underlying gesture recognizer is then enabled.
+   *
+   * @param {Element} node
+   * @param {string} gesture
+   * @return Boolean `gesture` is a valid gesture
+   */
+  scope.activateGesture = function(node, gesture) {
+    var g = gesture.toLowerCase();
+    var dep = dispatcher.dependencyMap[g];
+    if (dep) {
+      var recognizer = dispatcher.gestures[dep.index];
+      if (!node._pgListeners) {
+        dispatcher.register(node);
+        node._pgListeners = 0;
+      }
+      // TODO(dfreedm): re-evaluate bookkeeping to avoid using attributes
+      if (recognizer) {
+        var touchAction = recognizer.defaultActions && recognizer.defaultActions[g];
+        var actionNode;
+        switch(node.nodeType) {
+          case Node.ELEMENT_NODE:
+            actionNode = node;
+          break;
+          case Node.DOCUMENT_FRAGMENT_NODE:
+            actionNode = node.host;
+          break;
+          default:
+            actionNode = null;
+          break;
+        }
+        if (touchAction && actionNode && !actionNode.hasAttribute('touch-action')) {
+          actionNode.setAttribute('touch-action', touchAction);
+        }
+      }
+      if (!node._pgEvents) {
+        node._pgEvents = {};
+      }
+      node._pgEvents[g] = (node._pgEvents[g] || 0) + 1;
+      node._pgListeners++;
+    }
+    return Boolean(dep);
+  };
+
+  /**
+   *
+   * Listen for `gesture` from `node` with `handler` function.
+   *
+   * @param {Element} node
+   * @param {string} gesture
+   * @param {Function} handler
+   * @param {Boolean} capture
+   */
+  scope.addEventListener = function(node, gesture, handler, capture) {
+    if (handler) {
+      scope.activateGesture(node, gesture);
+      node.addEventListener(gesture, handler, capture);
+    }
+  };
+
+  /**
+   * Tears down the gesture configuration for `node`
+   *
+   * If `handler` is the last listener for `gesture`, the underlying gesture recognizer is disabled.
+   *
+   * @param {Element} node
+   * @param {string} gesture
+   * @return Boolean `gesture` is a valid gesture
+   */
+  scope.deactivateGesture = function(node, gesture) {
+    var g = gesture.toLowerCase();
+    var dep = dispatcher.dependencyMap[g];
+    if (dep) {
+      if (node._pgListeners > 0) {
+        node._pgListeners--;
+      }
+      if (node._pgListeners === 0) {
+        dispatcher.unregister(node);
+      }
+      if (node._pgEvents) {
+        if (node._pgEvents[g] > 0) {
+          node._pgEvents[g]--;
+        } else {
+          node._pgEvents[g] = 0;
+        }
+      }
+    }
+    return Boolean(dep);
+  };
+
+  /**
+   * Stop listening for `gesture` from `node` with `handler` function.
+   *
+   * @param {Element} node
+   * @param {string} gesture
+   * @param {Function} handler
+   * @param {Boolean} capture
+   */
+  scope.removeEventListener = function(node, gesture, handler, capture) {
+    if (handler) {
+      scope.deactivateGesture(node, gesture);
+      node.removeEventListener(gesture, handler, capture);
+    }
+  };
+})(window.PolymerGestures);
+
+(function(scope) {
+  var dispatcher = scope.dispatcher;
+  var pointermap = dispatcher.pointermap;
+  // radius around touchend that swallows mouse events
+  var DEDUP_DIST = 25;
+
+  var WHICH_TO_BUTTONS = [0, 1, 4, 2];
+
+  var CURRENT_BUTTONS = 0;
+
+  var FIREFOX_LINUX = /Linux.*Firefox\//i;
+
+  var HAS_BUTTONS = (function() {
+    // firefox on linux returns spec-incorrect values for mouseup.buttons
+    // https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent.buttons#See_also
+    // https://codereview.chromium.org/727593003/#msg16
+    if (FIREFOX_LINUX.test(navigator.userAgent)) {
+      return false;
+    }
+    try {
+      return new MouseEvent('test', {buttons: 1}).buttons === 1;
+    } catch (e) {
+      return false;
+    }
+  })();
+
+  // handler block for native mouse events
+  var mouseEvents = {
+    POINTER_ID: 1,
+    POINTER_TYPE: 'mouse',
+    events: [
+      'mousedown',
+      'mousemove',
+      'mouseup'
+    ],
+    exposes: [
+      'down',
+      'up',
+      'move'
+    ],
+    register: function(target) {
+      dispatcher.listen(target, this.events);
+    },
+    unregister: function(target) {
+      if (target === document) {
+        return;
+      }
+      dispatcher.unlisten(target, this.events);
+    },
+    lastTouches: [],
+    // collide with the global mouse listener
+    isEventSimulatedFromTouch: function(inEvent) {
+      var lts = this.lastTouches;
+      var x = inEvent.clientX, y = inEvent.clientY;
+      for (var i = 0, l = lts.length, t; i < l && (t = lts[i]); i++) {
+        // simulated mouse events will be swallowed near a primary touchend
+        var dx = Math.abs(x - t.x), dy = Math.abs(y - t.y);
+        if (dx <= DEDUP_DIST && dy <= DEDUP_DIST) {
+          return true;
+        }
+      }
+    },
+    prepareEvent: function(inEvent) {
+      var e = dispatcher.cloneEvent(inEvent);
+      e.pointerId = this.POINTER_ID;
+      e.isPrimary = true;
+      e.pointerType = this.POINTER_TYPE;
+      e._source = 'mouse';
+      if (!HAS_BUTTONS) {
+        var type = inEvent.type;
+        var bit = WHICH_TO_BUTTONS[inEvent.which] || 0;
+        if (type === 'mousedown') {
+          CURRENT_BUTTONS |= bit;
+        } else if (type === 'mouseup') {
+          CURRENT_BUTTONS &= ~bit;
+        }
+        e.buttons = CURRENT_BUTTONS;
+      }
+      return e;
+    },
+    mousedown: function(inEvent) {
+      if (!this.isEventSimulatedFromTouch(inEvent)) {
+        var p = pointermap.has(this.POINTER_ID);
+        var e = this.prepareEvent(inEvent);
+        e.target = scope.findTarget(inEvent);
+        pointermap.set(this.POINTER_ID, e.target);
+        dispatcher.down(e);
+      }
+    },
+    mousemove: function(inEvent) {
+      if (!this.isEventSimulatedFromTouch(inEvent)) {
+        var target = pointermap.get(this.POINTER_ID);
+        if (target) {
+          var e = this.prepareEvent(inEvent);
+          e.target = target;
+          // handle case where we missed a mouseup
+          if ((HAS_BUTTONS ? e.buttons : e.which) === 0) {
+            if (!HAS_BUTTONS) {
+              CURRENT_BUTTONS = e.buttons = 0;
+            }
+            dispatcher.cancel(e);
+            this.cleanupMouse(e.buttons);
+          } else {
+            dispatcher.move(e);
+          }
+        }
+      }
+    },
+    mouseup: function(inEvent) {
+      if (!this.isEventSimulatedFromTouch(inEvent)) {
+        var e = this.prepareEvent(inEvent);
+        e.relatedTarget = scope.findTarget(inEvent);
+        e.target = pointermap.get(this.POINTER_ID);
+        dispatcher.up(e);
+        this.cleanupMouse(e.buttons);
+      }
+    },
+    cleanupMouse: function(buttons) {
+      if (buttons === 0) {
+        pointermap.delete(this.POINTER_ID);
+      }
+    }
+  };
+
+  scope.mouseEvents = mouseEvents;
+})(window.PolymerGestures);
+
+(function(scope) {
+  var dispatcher = scope.dispatcher;
+  var allShadows = scope.targetFinding.allShadows.bind(scope.targetFinding);
+  var pointermap = dispatcher.pointermap;
+  var touchMap = Array.prototype.map.call.bind(Array.prototype.map);
+  // This should be long enough to ignore compat mouse events made by touch
+  var DEDUP_TIMEOUT = 2500;
+  var DEDUP_DIST = 25;
+  var CLICK_COUNT_TIMEOUT = 200;
+  var HYSTERESIS = 20;
+  var ATTRIB = 'touch-action';
+  // TODO(dfreedm): disable until http://crbug.com/399765 is resolved
+  // var HAS_TOUCH_ACTION = ATTRIB in document.head.style;
+  var HAS_TOUCH_ACTION = false;
+
+  // handler block for native touch events
+  var touchEvents = {
+    IS_IOS: false,
+    events: [
+      'touchstart',
+      'touchmove',
+      'touchend',
+      'touchcancel'
+    ],
+    exposes: [
+      'down',
+      'up',
+      'move'
+    ],
+    register: function(target, initial) {
+      if (this.IS_IOS ? initial : !initial) {
+        dispatcher.listen(target, this.events);
+      }
+    },
+    unregister: function(target) {
+      if (!this.IS_IOS) {
+        dispatcher.unlisten(target, this.events);
+      }
+    },
+    scrollTypes: {
+      EMITTER: 'none',
+      XSCROLLER: 'pan-x',
+      YSCROLLER: 'pan-y',
+    },
+    touchActionToScrollType: function(touchAction) {
+      var t = touchAction;
+      var st = this.scrollTypes;
+      if (t === st.EMITTER) {
+        return 'none';
+      } else if (t === st.XSCROLLER) {
+        return 'X';
+      } else if (t === st.YSCROLLER) {
+        return 'Y';
+      } else {
+        return 'XY';
+      }
+    },
+    POINTER_TYPE: 'touch',
+    firstTouch: null,
+    isPrimaryTouch: function(inTouch) {
+      return this.firstTouch === inTouch.identifier;
+    },
+    setPrimaryTouch: function(inTouch) {
+      // set primary touch if there no pointers, or the only pointer is the mouse
+      if (pointermap.pointers() === 0 || (pointermap.pointers() === 1 && pointermap.has(1))) {
+        this.firstTouch = inTouch.identifier;
+        this.firstXY = {X: inTouch.clientX, Y: inTouch.clientY};
+        this.firstTarget = inTouch.target;
+        this.scrolling = null;
+        this.cancelResetClickCount();
+      }
+    },
+    removePrimaryPointer: function(inPointer) {
+      if (inPointer.isPrimary) {
+        this.firstTouch = null;
+        this.firstXY = null;
+        this.resetClickCount();
+      }
+    },
+    clickCount: 0,
+    resetId: null,
+    resetClickCount: function() {
+      var fn = function() {
+        this.clickCount = 0;
+        this.resetId = null;
+      }.bind(this);
+      this.resetId = setTimeout(fn, CLICK_COUNT_TIMEOUT);
+    },
+    cancelResetClickCount: function() {
+      if (this.resetId) {
+        clearTimeout(this.resetId);
+      }
+    },
+    typeToButtons: function(type) {
+      var ret = 0;
+      if (type === 'touchstart' || type === 'touchmove') {
+        ret = 1;
+      }
+      return ret;
+    },
+    findTarget: function(touch, id) {
+      if (this.currentTouchEvent.type === 'touchstart') {
+        if (this.isPrimaryTouch(touch)) {
+          var fastPath = {
+            clientX: touch.clientX,
+            clientY: touch.clientY,
+            path: this.currentTouchEvent.path,
+            target: this.currentTouchEvent.target
+          };
+          return scope.findTarget(fastPath);
+        } else {
+          return scope.findTarget(touch);
+        }
+      }
+      // reuse target we found in touchstart
+      return pointermap.get(id);
+    },
+    touchToPointer: function(inTouch) {
+      var cte = this.currentTouchEvent;
+      var e = dispatcher.cloneEvent(inTouch);
+      // Spec specifies that pointerId 1 is reserved for Mouse.
+      // Touch identifiers can start at 0.
+      // Add 2 to the touch identifier for compatibility.
+      var id = e.pointerId = inTouch.identifier + 2;
+      e.target = this.findTarget(inTouch, id);
+      e.bubbles = true;
+      e.cancelable = true;
+      e.detail = this.clickCount;
+      e.buttons = this.typeToButtons(cte.type);
+      e.width = inTouch.webkitRadiusX || inTouch.radiusX || 0;
+      e.height = inTouch.webkitRadiusY || inTouch.radiusY || 0;
+      e.pressure = inTouch.webkitForce || inTouch.force || 0.5;
+      e.isPrimary = this.isPrimaryTouch(inTouch);
+      e.pointerType = this.POINTER_TYPE;
+      e._source = 'touch';
+      // forward touch preventDefaults
+      var self = this;
+      e.preventDefault = function() {
+        self.scrolling = false;
+        self.firstXY = null;
+        cte.preventDefault();
+      };
+      return e;
+    },
+    processTouches: function(inEvent, inFunction) {
+      var tl = inEvent.changedTouches;
+      this.currentTouchEvent = inEvent;
+      for (var i = 0, t, p; i < tl.length; i++) {
+        t = tl[i];
+        p = this.touchToPointer(t);
+        if (inEvent.type === 'touchstart') {
+          pointermap.set(p.pointerId, p.target);
+        }
+        if (pointermap.has(p.pointerId)) {
+          inFunction.call(this, p);
+        }
+        if (inEvent.type === 'touchend' || inEvent._cancel) {
+          this.cleanUpPointer(p);
+        }
+      }
+    },
+    // For single axis scrollers, determines whether the element should emit
+    // pointer events or behave as a scroller
+    shouldScroll: function(inEvent) {
+      if (this.firstXY) {
+        var ret;
+        var touchAction = scope.targetFinding.findTouchAction(inEvent);
+        var scrollAxis = this.touchActionToScrollType(touchAction);
+        if (scrollAxis === 'none') {
+          // this element is a touch-action: none, should never scroll
+          ret = false;
+        } else if (scrollAxis === 'XY') {
+          // this element should always scroll
+          ret = true;
+        } else {
+          var t = inEvent.changedTouches[0];
+          // check the intended scroll axis, and other axis
+          var a = scrollAxis;
+          var oa = scrollAxis === 'Y' ? 'X' : 'Y';
+          var da = Math.abs(t['client' + a] - this.firstXY[a]);
+          var doa = Math.abs(t['client' + oa] - this.firstXY[oa]);
+          // if delta in the scroll axis > delta other axis, scroll instead of
+          // making events
+          ret = da >= doa;
+        }
+        return ret;
+      }
+    },
+    findTouch: function(inTL, inId) {
+      for (var i = 0, l = inTL.length, t; i < l && (t = inTL[i]); i++) {
+        if (t.identifier === inId) {
+          return true;
+        }
+      }
+    },
+    // In some instances, a touchstart can happen without a touchend. This
+    // leaves the pointermap in a broken state.
+    // Therefore, on every touchstart, we remove the touches that did not fire a
+    // touchend event.
+    // To keep state globally consistent, we fire a
+    // pointercancel for this "abandoned" touch
+    vacuumTouches: function(inEvent) {
+      var tl = inEvent.touches;
+      // pointermap.pointers() should be < tl.length here, as the touchstart has not
+      // been processed yet.
+      if (pointermap.pointers() >= tl.length) {
+        var d = [];
+        pointermap.forEach(function(value, key) {
+          // Never remove pointerId == 1, which is mouse.
+          // Touch identifiers are 2 smaller than their pointerId, which is the
+          // index in pointermap.
+          if (key !== 1 && !this.findTouch(tl, key - 2)) {
+            var p = value;
+            d.push(p);
+          }
+        }, this);
+        d.forEach(function(p) {
+          this.cancel(p);
+          pointermap.delete(p.pointerId);
+        }, this);
+      }
+    },
+    touchstart: function(inEvent) {
+      this.vacuumTouches(inEvent);
+      this.setPrimaryTouch(inEvent.changedTouches[0]);
+      this.dedupSynthMouse(inEvent);
+      if (!this.scrolling) {
+        this.clickCount++;
+        this.processTouches(inEvent, this.down);
+      }
+    },
+    down: function(inPointer) {
+      dispatcher.down(inPointer);
+    },
+    touchmove: function(inEvent) {
+      if (HAS_TOUCH_ACTION) {
+        // touchevent.cancelable == false is sent when the page is scrolling under native Touch Action in Chrome 36
+        // https://groups.google.com/a/chromium.org/d/msg/input-dev/wHnyukcYBcA/b9kmtwM1jJQJ
+        if (inEvent.cancelable) {
+          this.processTouches(inEvent, this.move);
+        }
+      } else {
+        if (!this.scrolling) {
+          if (this.scrolling === null && this.shouldScroll(inEvent)) {
+            this.scrolling = true;
+          } else {
+            this.scrolling = false;
+            inEvent.preventDefault();
+            this.processTouches(inEvent, this.move);
+          }
+        } else if (this.firstXY) {
+          var t = inEvent.changedTouches[0];
+          var dx = t.clientX - this.firstXY.X;
+          var dy = t.clientY - this.firstXY.Y;
+          var dd = Math.sqrt(dx * dx + dy * dy);
+          if (dd >= HYSTERESIS) {
+            this.touchcancel(inEvent);
+            this.scrolling = true;
+            this.firstXY = null;
+          }
+        }
+      }
+    },
+    move: function(inPointer) {
+      dispatcher.move(inPointer);
+    },
+    touchend: function(inEvent) {
+      this.dedupSynthMouse(inEvent);
+      this.processTouches(inEvent, this.up);
+    },
+    up: function(inPointer) {
+      inPointer.relatedTarget = scope.findTarget(inPointer);
+      dispatcher.up(inPointer);
+    },
+    cancel: function(inPointer) {
+      dispatcher.cancel(inPointer);
+    },
+    touchcancel: function(inEvent) {
+      inEvent._cancel = true;
+      this.processTouches(inEvent, this.cancel);
+    },
+    cleanUpPointer: function(inPointer) {
+      pointermap['delete'](inPointer.pointerId);
+      this.removePrimaryPointer(inPointer);
+    },
+    // prevent synth mouse events from creating pointer events
+    dedupSynthMouse: function(inEvent) {
+      var lts = scope.mouseEvents.lastTouches;
+      var t = inEvent.changedTouches[0];
+      // only the primary finger will synth mouse events
+      if (this.isPrimaryTouch(t)) {
+        // remember x/y of last touch
+        var lt = {x: t.clientX, y: t.clientY};
+        lts.push(lt);
+        var fn = (function(lts, lt){
+          var i = lts.indexOf(lt);
+          if (i > -1) {
+            lts.splice(i, 1);
+          }
+        }).bind(null, lts, lt);
+        setTimeout(fn, DEDUP_TIMEOUT);
+      }
+    }
+  };
+
+  // prevent "ghost clicks" that come from elements that were removed in a touch handler
+  var STOP_PROP_FN = Event.prototype.stopImmediatePropagation || Event.prototype.stopPropagation;
+  document.addEventListener('click', function(ev) {
+    var x = ev.clientX, y = ev.clientY;
+    // check if a click is within DEDUP_DIST px radius of the touchstart
+    var closeTo = function(touch) {
+      var dx = Math.abs(x - touch.x), dy = Math.abs(y - touch.y);
+      return (dx <= DEDUP_DIST && dy <= DEDUP_DIST);
+    };
+    // if click coordinates are close to touch coordinates, assume the click came from a touch
+    var wasTouched = scope.mouseEvents.lastTouches.some(closeTo);
+    // if the click came from touch, and the touchstart target is not in the path of the click event,
+    // then the touchstart target was probably removed, and the click should be "busted"
+    var path = scope.targetFinding.path(ev);
+    if (wasTouched) {
+      for (var i = 0; i < path.length; i++) {
+        if (path[i] === touchEvents.firstTarget) {
+          return;
+        }
+      }
+      ev.preventDefault();
+      STOP_PROP_FN.call(ev);
+    }
+  }, true);
+
+  scope.touchEvents = touchEvents;
+})(window.PolymerGestures);
+
+(function(scope) {
+  var dispatcher = scope.dispatcher;
+  var pointermap = dispatcher.pointermap;
+  var HAS_BITMAP_TYPE = window.MSPointerEvent && typeof window.MSPointerEvent.MSPOINTER_TYPE_MOUSE === 'number';
+  var msEvents = {
+    events: [
+      'MSPointerDown',
+      'MSPointerMove',
+      'MSPointerUp',
+      'MSPointerCancel',
+    ],
+    register: function(target) {
+      dispatcher.listen(target, this.events);
+    },
+    unregister: function(target) {
+      if (target === document) {
+        return;
+      }
+      dispatcher.unlisten(target, this.events);
+    },
+    POINTER_TYPES: [
+      '',
+      'unavailable',
+      'touch',
+      'pen',
+      'mouse'
+    ],
+    prepareEvent: function(inEvent) {
+      var e = inEvent;
+      e = dispatcher.cloneEvent(inEvent);
+      if (HAS_BITMAP_TYPE) {
+        e.pointerType = this.POINTER_TYPES[inEvent.pointerType];
+      }
+      e._source = 'ms';
+      return e;
+    },
+    cleanup: function(id) {
+      pointermap['delete'](id);
+    },
+    MSPointerDown: function(inEvent) {
+      var e = this.prepareEvent(inEvent);
+      e.target = scope.findTarget(inEvent);
+      pointermap.set(inEvent.pointerId, e.target);
+      dispatcher.down(e);
+    },
+    MSPointerMove: function(inEvent) {
+      var target = pointermap.get(inEvent.pointerId);
+      if (target) {
+        var e = this.prepareEvent(inEvent);
+        e.target = target;
+        dispatcher.move(e);
+      }
+    },
+    MSPointerUp: function(inEvent) {
+      var e = this.prepareEvent(inEvent);
+      e.relatedTarget = scope.findTarget(inEvent);
+      e.target = pointermap.get(e.pointerId);
+      dispatcher.up(e);
+      this.cleanup(inEvent.pointerId);
+    },
+    MSPointerCancel: function(inEvent) {
+      var e = this.prepareEvent(inEvent);
+      e.relatedTarget = scope.findTarget(inEvent);
+      e.target = pointermap.get(e.pointerId);
+      dispatcher.cancel(e);
+      this.cleanup(inEvent.pointerId);
+    }
+  };
+
+  scope.msEvents = msEvents;
+})(window.PolymerGestures);
+
+(function(scope) {
+  var dispatcher = scope.dispatcher;
+  var pointermap = dispatcher.pointermap;
+  var pointerEvents = {
+    events: [
+      'pointerdown',
+      'pointermove',
+      'pointerup',
+      'pointercancel'
+    ],
+    prepareEvent: function(inEvent) {
+      var e = dispatcher.cloneEvent(inEvent);
+      e._source = 'pointer';
+      return e;
+    },
+    register: function(target) {
+      dispatcher.listen(target, this.events);
+    },
+    unregister: function(target) {
+      if (target === document) {
+        return;
+      }
+      dispatcher.unlisten(target, this.events);
+    },
+    cleanup: function(id) {
+      pointermap['delete'](id);
+    },
+    pointerdown: function(inEvent) {
+      var e = this.prepareEvent(inEvent);
+      e.target = scope.findTarget(inEvent);
+      pointermap.set(e.pointerId, e.target);
+      dispatcher.down(e);
+    },
+    pointermove: function(inEvent) {
+      var target = pointermap.get(inEvent.pointerId);
+      if (target) {
+        var e = this.prepareEvent(inEvent);
+        e.target = target;
+        dispatcher.move(e);
+      }
+    },
+    pointerup: function(inEvent) {
+      var e = this.prepareEvent(inEvent);
+      e.relatedTarget = scope.findTarget(inEvent);
+      e.target = pointermap.get(e.pointerId);
+      dispatcher.up(e);
+      this.cleanup(inEvent.pointerId);
+    },
+    pointercancel: function(inEvent) {
+      var e = this.prepareEvent(inEvent);
+      e.relatedTarget = scope.findTarget(inEvent);
+      e.target = pointermap.get(e.pointerId);
+      dispatcher.cancel(e);
+      this.cleanup(inEvent.pointerId);
+    }
+  };
+
+  scope.pointerEvents = pointerEvents;
+})(window.PolymerGestures);
+
+/**
+ * This module contains the handlers for native platform events.
+ * From here, the dispatcher is called to create unified pointer events.
+ * Included are touch events (v1), mouse events, and MSPointerEvents.
+ */
+(function(scope) {
+
+  var dispatcher = scope.dispatcher;
+  var nav = window.navigator;
+
+  if (window.PointerEvent) {
+    dispatcher.registerSource('pointer', scope.pointerEvents);
+  } else if (nav.msPointerEnabled) {
+    dispatcher.registerSource('ms', scope.msEvents);
+  } else {
+    dispatcher.registerSource('mouse', scope.mouseEvents);
+    if (window.ontouchstart !== undefined) {
+      dispatcher.registerSource('touch', scope.touchEvents);
+    }
+  }
+
+  // Work around iOS bugs https://bugs.webkit.org/show_bug.cgi?id=135628 and https://bugs.webkit.org/show_bug.cgi?id=136506
+  var ua = navigator.userAgent;
+  var IS_IOS = ua.match(/iPad|iPhone|iPod/) && 'ontouchstart' in window;
+
+  dispatcher.IS_IOS = IS_IOS;
+  scope.touchEvents.IS_IOS = IS_IOS;
+
+  dispatcher.register(document, true);
+})(window.PolymerGestures);
+
+/**
+ * This event denotes the beginning of a series of tracking events.
+ *
+ * @module PointerGestures
+ * @submodule Events
+ * @class trackstart
+ */
+/**
+ * Pixels moved in the x direction since trackstart.
+ * @type Number
+ * @property dx
+ */
+/**
+ * Pixes moved in the y direction since trackstart.
+ * @type Number
+ * @property dy
+ */
+/**
+ * Pixels moved in the x direction since the last track.
+ * @type Number
+ * @property ddx
+ */
+/**
+ * Pixles moved in the y direction since the last track.
+ * @type Number
+ * @property ddy
+ */
+/**
+ * The clientX position of the track gesture.
+ * @type Number
+ * @property clientX
+ */
+/**
+ * The clientY position of the track gesture.
+ * @type Number
+ * @property clientY
+ */
+/**
+ * The pageX position of the track gesture.
+ * @type Number
+ * @property pageX
+ */
+/**
+ * The pageY position of the track gesture.
+ * @type Number
+ * @property pageY
+ */
+/**
+ * The screenX position of the track gesture.
+ * @type Number
+ * @property screenX
+ */
+/**
+ * The screenY position of the track gesture.
+ * @type Number
+ * @property screenY
+ */
+/**
+ * The last x axis direction of the pointer.
+ * @type Number
+ * @property xDirection
+ */
+/**
+ * The last y axis direction of the pointer.
+ * @type Number
+ * @property yDirection
+ */
+/**
+ * A shared object between all tracking events.
+ * @type Object
+ * @property trackInfo
+ */
+/**
+ * The element currently under the pointer.
+ * @type Element
+ * @property relatedTarget
+ */
+/**
+ * The type of pointer that make the track gesture.
+ * @type String
+ * @property pointerType
+ */
+/**
+ *
+ * This event fires for all pointer movement being tracked.
+ *
+ * @class track
+ * @extends trackstart
+ */
+/**
+ * This event fires when the pointer is no longer being tracked.
+ *
+ * @class trackend
+ * @extends trackstart
+ */
+
+ (function(scope) {
+   var dispatcher = scope.dispatcher;
+   var eventFactory = scope.eventFactory;
+   var pointermap = new scope.PointerMap();
+   var track = {
+     events: [
+       'down',
+       'move',
+       'up',
+     ],
+     exposes: [
+      'trackstart',
+      'track',
+      'trackx',
+      'tracky',
+      'trackend'
+     ],
+     defaultActions: {
+       'track': 'none',
+       'trackx': 'pan-y',
+       'tracky': 'pan-x'
+     },
+     WIGGLE_THRESHOLD: 4,
+     clampDir: function(inDelta) {
+       return inDelta > 0 ? 1 : -1;
+     },
+     calcPositionDelta: function(inA, inB) {
+       var x = 0, y = 0;
+       if (inA && inB) {
+         x = inB.pageX - inA.pageX;
+         y = inB.pageY - inA.pageY;
+       }
+       return {x: x, y: y};
+     },
+     fireTrack: function(inType, inEvent, inTrackingData) {
+       var t = inTrackingData;
+       var d = this.calcPositionDelta(t.downEvent, inEvent);
+       var dd = this.calcPositionDelta(t.lastMoveEvent, inEvent);
+       if (dd.x) {
+         t.xDirection = this.clampDir(dd.x);
+       } else if (inType === 'trackx') {
+         return;
+       }
+       if (dd.y) {
+         t.yDirection = this.clampDir(dd.y);
+       } else if (inType === 'tracky') {
+         return;
+       }
+       var gestureProto = {
+         bubbles: true,
+         cancelable: true,
+         trackInfo: t.trackInfo,
+         relatedTarget: inEvent.relatedTarget,
+         pointerType: inEvent.pointerType,
+         pointerId: inEvent.pointerId,
+         _source: 'track'
+       };
+       if (inType !== 'tracky') {
+         gestureProto.x = inEvent.x;
+         gestureProto.dx = d.x;
+         gestureProto.ddx = dd.x;
+         gestureProto.clientX = inEvent.clientX;
+         gestureProto.pageX = inEvent.pageX;
+         gestureProto.screenX = inEvent.screenX;
+         gestureProto.xDirection = t.xDirection;
+       }
+       if (inType !== 'trackx') {
+         gestureProto.dy = d.y;
+         gestureProto.ddy = dd.y;
+         gestureProto.y = inEvent.y;
+         gestureProto.clientY = inEvent.clientY;
+         gestureProto.pageY = inEvent.pageY;
+         gestureProto.screenY = inEvent.screenY;
+         gestureProto.yDirection = t.yDirection;
+       }
+       var e = eventFactory.makeGestureEvent(inType, gestureProto);
+       t.downTarget.dispatchEvent(e);
+     },
+     down: function(inEvent) {
+       if (inEvent.isPrimary && (inEvent.pointerType === 'mouse' ? inEvent.buttons === 1 : true)) {
+         var p = {
+           downEvent: inEvent,
+           downTarget: inEvent.target,
+           trackInfo: {},
+           lastMoveEvent: null,
+           xDirection: 0,
+           yDirection: 0,
+           tracking: false
+         };
+         pointermap.set(inEvent.pointerId, p);
+       }
+     },
+     move: function(inEvent) {
+       var p = pointermap.get(inEvent.pointerId);
+       if (p) {
+         if (!p.tracking) {
+           var d = this.calcPositionDelta(p.downEvent, inEvent);
+           var move = d.x * d.x + d.y * d.y;
+           // start tracking only if finger moves more than WIGGLE_THRESHOLD
+           if (move > this.WIGGLE_THRESHOLD) {
+             p.tracking = true;
+             p.lastMoveEvent = p.downEvent;
+             this.fireTrack('trackstart', inEvent, p);
+           }
+         }
+         if (p.tracking) {
+           this.fireTrack('track', inEvent, p);
+           this.fireTrack('trackx', inEvent, p);
+           this.fireTrack('tracky', inEvent, p);
+         }
+         p.lastMoveEvent = inEvent;
+       }
+     },
+     up: function(inEvent) {
+       var p = pointermap.get(inEvent.pointerId);
+       if (p) {
+         if (p.tracking) {
+           this.fireTrack('trackend', inEvent, p);
+         }
+         pointermap.delete(inEvent.pointerId);
+       }
+     }
+   };
+   dispatcher.registerGesture('track', track);
+ })(window.PolymerGestures);
+
+/**
+ * This event is fired when a pointer is held down for 200ms.
+ *
+ * @module PointerGestures
+ * @submodule Events
+ * @class hold
+ */
+/**
+ * Type of pointer that made the holding event.
+ * @type String
+ * @property pointerType
+ */
+/**
+ * Screen X axis position of the held pointer
+ * @type Number
+ * @property clientX
+ */
+/**
+ * Screen Y axis position of the held pointer
+ * @type Number
+ * @property clientY
+ */
+/**
+ * Type of pointer that made the holding event.
+ * @type String
+ * @property pointerType
+ */
+/**
+ * This event is fired every 200ms while a pointer is held down.
+ *
+ * @class holdpulse
+ * @extends hold
+ */
+/**
+ * Milliseconds pointer has been held down.
+ * @type Number
+ * @property holdTime
+ */
+/**
+ * This event is fired when a held pointer is released or moved.
+ *
+ * @class release
+ */
+
+(function(scope) {
+  var dispatcher = scope.dispatcher;
+  var eventFactory = scope.eventFactory;
+  var hold = {
+    // wait at least HOLD_DELAY ms between hold and pulse events
+    HOLD_DELAY: 200,
+    // pointer can move WIGGLE_THRESHOLD pixels before not counting as a hold
+    WIGGLE_THRESHOLD: 16,
+    events: [
+      'down',
+      'move',
+      'up',
+    ],
+    exposes: [
+      'hold',
+      'holdpulse',
+      'release'
+    ],
+    heldPointer: null,
+    holdJob: null,
+    pulse: function() {
+      var hold = Date.now() - this.heldPointer.timeStamp;
+      var type = this.held ? 'holdpulse' : 'hold';
+      this.fireHold(type, hold);
+      this.held = true;
+    },
+    cancel: function() {
+      clearInterval(this.holdJob);
+      if (this.held) {
+        this.fireHold('release');
+      }
+      this.held = false;
+      this.heldPointer = null;
+      this.target = null;
+      this.holdJob = null;
+    },
+    down: function(inEvent) {
+      if (inEvent.isPrimary && !this.heldPointer) {
+        this.heldPointer = inEvent;
+        this.target = inEvent.target;
+        this.holdJob = setInterval(this.pulse.bind(this), this.HOLD_DELAY);
+      }
+    },
+    up: function(inEvent) {
+      if (this.heldPointer && this.heldPointer.pointerId === inEvent.pointerId) {
+        this.cancel();
+      }
+    },
+    move: function(inEvent) {
+      if (this.heldPointer && this.heldPointer.pointerId === inEvent.pointerId) {
+        var x = inEvent.clientX - this.heldPointer.clientX;
+        var y = inEvent.clientY - this.heldPointer.clientY;
+        if ((x * x + y * y) > this.WIGGLE_THRESHOLD) {
+          this.cancel();
+        }
+      }
+    },
+    fireHold: function(inType, inHoldTime) {
+      var p = {
+        bubbles: true,
+        cancelable: true,
+        pointerType: this.heldPointer.pointerType,
+        pointerId: this.heldPointer.pointerId,
+        x: this.heldPointer.clientX,
+        y: this.heldPointer.clientY,
+        _source: 'hold'
+      };
+      if (inHoldTime) {
+        p.holdTime = inHoldTime;
+      }
+      var e = eventFactory.makeGestureEvent(inType, p);
+      this.target.dispatchEvent(e);
+    }
+  };
+  dispatcher.registerGesture('hold', hold);
+})(window.PolymerGestures);
+
+/**
+ * This event is fired when a pointer quickly goes down and up, and is used to
+ * denote activation.
+ *
+ * Any gesture event can prevent the tap event from being created by calling
+ * `event.preventTap`.
+ *
+ * Any pointer event can prevent the tap by setting the `tapPrevented` property
+ * on itself.
+ *
+ * @module PointerGestures
+ * @submodule Events
+ * @class tap
+ */
+/**
+ * X axis position of the tap.
+ * @property x
+ * @type Number
+ */
+/**
+ * Y axis position of the tap.
+ * @property y
+ * @type Number
+ */
+/**
+ * Type of the pointer that made the tap.
+ * @property pointerType
+ * @type String
+ */
+(function(scope) {
+  var dispatcher = scope.dispatcher;
+  var eventFactory = scope.eventFactory;
+  var pointermap = new scope.PointerMap();
+  var tap = {
+    events: [
+      'down',
+      'up'
+    ],
+    exposes: [
+      'tap'
+    ],
+    down: function(inEvent) {
+      if (inEvent.isPrimary && !inEvent.tapPrevented) {
+        pointermap.set(inEvent.pointerId, {
+          target: inEvent.target,
+          buttons: inEvent.buttons,
+          x: inEvent.clientX,
+          y: inEvent.clientY
+        });
+      }
+    },
+    shouldTap: function(e, downState) {
+      var tap = true;
+      if (e.pointerType === 'mouse') {
+        // only allow left click to tap for mouse
+        tap = (e.buttons ^ 1) && (downState.buttons & 1);
+      }
+      return tap && !e.tapPrevented;
+    },
+    up: function(inEvent) {
+      var start = pointermap.get(inEvent.pointerId);
+      if (start && this.shouldTap(inEvent, start)) {
+        // up.relatedTarget is target currently under finger
+        var t = scope.targetFinding.LCA(start.target, inEvent.relatedTarget);
+        if (t) {
+          var e = eventFactory.makeGestureEvent('tap', {
+            bubbles: true,
+            cancelable: true,
+            x: inEvent.clientX,
+            y: inEvent.clientY,
+            detail: inEvent.detail,
+            pointerType: inEvent.pointerType,
+            pointerId: inEvent.pointerId,
+            altKey: inEvent.altKey,
+            ctrlKey: inEvent.ctrlKey,
+            metaKey: inEvent.metaKey,
+            shiftKey: inEvent.shiftKey,
+            _source: 'tap'
+          });
+          t.dispatchEvent(e);
+        }
+      }
+      pointermap.delete(inEvent.pointerId);
+    }
+  };
+  // patch eventFactory to remove id from tap's pointermap for preventTap calls
+  eventFactory.preventTap = function(e) {
+    return function() {
+      e.tapPrevented = true;
+      pointermap.delete(e.pointerId);
+    };
+  };
+  dispatcher.registerGesture('tap', tap);
+})(window.PolymerGestures);
+
+/*
+ * Basic strategy: find the farthest apart points, use as diameter of circle
+ * react to size change and rotation of the chord
+ */
+
+/**
+ * @module pointer-gestures
+ * @submodule Events
+ * @class pinch
+ */
+/**
+ * Scale of the pinch zoom gesture
+ * @property scale
+ * @type Number
+ */
+/**
+ * Center X position of pointers causing pinch
+ * @property centerX
+ * @type Number
+ */
+/**
+ * Center Y position of pointers causing pinch
+ * @property centerY
+ * @type Number
+ */
+
+/**
+ * @module pointer-gestures
+ * @submodule Events
+ * @class rotate
+ */
+/**
+ * Angle (in degrees) of rotation. Measured from starting positions of pointers.
+ * @property angle
+ * @type Number
+ */
+/**
+ * Center X position of pointers causing rotation
+ * @property centerX
+ * @type Number
+ */
+/**
+ * Center Y position of pointers causing rotation
+ * @property centerY
+ * @type Number
+ */
+(function(scope) {
+  var dispatcher = scope.dispatcher;
+  var eventFactory = scope.eventFactory;
+  var pointermap = new scope.PointerMap();
+  var RAD_TO_DEG = 180 / Math.PI;
+  var pinch = {
+    events: [
+      'down',
+      'up',
+      'move',
+      'cancel'
+    ],
+    exposes: [
+      'pinchstart',
+      'pinch',
+      'pinchend',
+      'rotate'
+    ],
+    defaultActions: {
+      'pinch': 'none',
+      'rotate': 'none'
+    },
+    reference: {},
+    down: function(inEvent) {
+      pointermap.set(inEvent.pointerId, inEvent);
+      if (pointermap.pointers() == 2) {
+        var points = this.calcChord();
+        var angle = this.calcAngle(points);
+        this.reference = {
+          angle: angle,
+          diameter: points.diameter,
+          target: scope.targetFinding.LCA(points.a.target, points.b.target)
+        };
+
+        this.firePinch('pinchstart', points.diameter, points);
+      }
+    },
+    up: function(inEvent) {
+      var p = pointermap.get(inEvent.pointerId);
+      var num = pointermap.pointers();
+      if (p) {
+        if (num === 2) {
+          // fire 'pinchend' before deleting pointer
+          var points = this.calcChord();
+          this.firePinch('pinchend', points.diameter, points);
+        }
+        pointermap.delete(inEvent.pointerId);
+      }
+    },
+    move: function(inEvent) {
+      if (pointermap.has(inEvent.pointerId)) {
+        pointermap.set(inEvent.pointerId, inEvent);
+        if (pointermap.pointers() > 1) {
+          this.calcPinchRotate();
+        }
+      }
+    },
+    cancel: function(inEvent) {
+        this.up(inEvent);
+    },
+    firePinch: function(type, diameter, points) {
+      var zoom = diameter / this.reference.diameter;
+      var e = eventFactory.makeGestureEvent(type, {
+        bubbles: true,
+        cancelable: true,
+        scale: zoom,
+        centerX: points.center.x,
+        centerY: points.center.y,
+        _source: 'pinch'
+      });
+      this.reference.target.dispatchEvent(e);
+    },
+    fireRotate: function(angle, points) {
+      var diff = Math.round((angle - this.reference.angle) % 360);
+      var e = eventFactory.makeGestureEvent('rotate', {
+        bubbles: true,
+        cancelable: true,
+        angle: diff,
+        centerX: points.center.x,
+        centerY: points.center.y,
+        _source: 'pinch'
+      });
+      this.reference.target.dispatchEvent(e);
+    },
+    calcPinchRotate: function() {
+      var points = this.calcChord();
+      var diameter = points.diameter;
+      var angle = this.calcAngle(points);
+      if (diameter != this.reference.diameter) {
+        this.firePinch('pinch', diameter, points);
+      }
+      if (angle != this.reference.angle) {
+        this.fireRotate(angle, points);
+      }
+    },
+    calcChord: function() {
+      var pointers = [];
+      pointermap.forEach(function(p) {
+        pointers.push(p);
+      });
+      var dist = 0;
+      // start with at least two pointers
+      var points = {a: pointers[0], b: pointers[1]};
+      var x, y, d;
+      for (var i = 0; i < pointers.length; i++) {
+        var a = pointers[i];
+        for (var j = i + 1; j < pointers.length; j++) {
+          var b = pointers[j];
+          x = Math.abs(a.clientX - b.clientX);
+          y = Math.abs(a.clientY - b.clientY);
+          d = x + y;
+          if (d > dist) {
+            dist = d;
+            points = {a: a, b: b};
+          }
+        }
+      }
+      x = Math.abs(points.a.clientX + points.b.clientX) / 2;
+      y = Math.abs(points.a.clientY + points.b.clientY) / 2;
+      points.center = { x: x, y: y };
+      points.diameter = dist;
+      return points;
+    },
+    calcAngle: function(points) {
+      var x = points.a.clientX - points.b.clientX;
+      var y = points.a.clientY - points.b.clientY;
+      return (360 + Math.atan2(y, x) * RAD_TO_DEG) % 360;
+    }
+  };
+  dispatcher.registerGesture('pinch', pinch);
+})(window.PolymerGestures);
+
+(function (global) {
+    'use strict';
+
+    var Token,
+        TokenName,
+        Syntax,
+        Messages,
+        source,
+        index,
+        length,
+        delegate,
+        lookahead,
+        state;
+
+    Token = {
+        BooleanLiteral: 1,
+        EOF: 2,
+        Identifier: 3,
+        Keyword: 4,
+        NullLiteral: 5,
+        NumericLiteral: 6,
+        Punctuator: 7,
+        StringLiteral: 8
+    };
+
+    TokenName = {};
+    TokenName[Token.BooleanLiteral] = 'Boolean';
+    TokenName[Token.EOF] = '<end>';
+    TokenName[Token.Identifier] = 'Identifier';
+    TokenName[Token.Keyword] = 'Keyword';
+    TokenName[Token.NullLiteral] = 'Null';
+    TokenName[Token.NumericLiteral] = 'Numeric';
+    TokenName[Token.Punctuator] = 'Punctuator';
+    TokenName[Token.StringLiteral] = 'String';
+
+    Syntax = {
+        ArrayExpression: 'ArrayExpression',
+        BinaryExpression: 'BinaryExpression',
+        CallExpression: 'CallExpression',
+        ConditionalExpression: 'ConditionalExpression',
+        EmptyStatement: 'EmptyStatement',
+        ExpressionStatement: 'ExpressionStatement',
+        Identifier: 'Identifier',
+        Literal: 'Literal',
+        LabeledStatement: 'LabeledStatement',
+        LogicalExpression: 'LogicalExpression',
+        MemberExpression: 'MemberExpression',
+        ObjectExpression: 'ObjectExpression',
+        Program: 'Program',
+        Property: 'Property',
+        ThisExpression: 'ThisExpression',
+        UnaryExpression: 'UnaryExpression'
+    };
+
+    // Error messages should be identical to V8.
+    Messages = {
+        UnexpectedToken:  'Unexpected token %0',
+        UnknownLabel: 'Undefined label \'%0\'',
+        Redeclaration: '%0 \'%1\' has already been declared'
+    };
+
+    // Ensure the condition is true, otherwise throw an error.
+    // This is only to have a better contract semantic, i.e. another safety net
+    // to catch a logic error. The condition shall be fulfilled in normal case.
+    // Do NOT use this to enforce a certain condition on any user input.
+
+    function assert(condition, message) {
+        if (!condition) {
+            throw new Error('ASSERT: ' + message);
+        }
+    }
+
+    function isDecimalDigit(ch) {
+        return (ch >= 48 && ch <= 57);   // 0..9
+    }
+
+
+    // 7.2 White Space
+
+    function isWhiteSpace(ch) {
+        return (ch === 32) ||  // space
+            (ch === 9) ||      // tab
+            (ch === 0xB) ||
+            (ch === 0xC) ||
+            (ch === 0xA0) ||
+            (ch >= 0x1680 && '\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\uFEFF'.indexOf(String.fromCharCode(ch)) > 0);
+    }
+
+    // 7.3 Line Terminators
+
+    function isLineTerminator(ch) {
+        return (ch === 10) || (ch === 13) || (ch === 0x2028) || (ch === 0x2029);
+    }
+
+    // 7.6 Identifier Names and Identifiers
+
+    function isIdentifierStart(ch) {
+        return (ch === 36) || (ch === 95) ||  // $ (dollar) and _ (underscore)
+            (ch >= 65 && ch <= 90) ||         // A..Z
+            (ch >= 97 && ch <= 122);          // a..z
+    }
+
+    function isIdentifierPart(ch) {
+        return (ch === 36) || (ch === 95) ||  // $ (dollar) and _ (underscore)
+            (ch >= 65 && ch <= 90) ||         // A..Z
+            (ch >= 97 && ch <= 122) ||        // a..z
+            (ch >= 48 && ch <= 57);           // 0..9
+    }
+
+    // 7.6.1.1 Keywords
+
+    function isKeyword(id) {
+        return (id === 'this')
+    }
+
+    // 7.4 Comments
+
+    function skipWhitespace() {
+        while (index < length && isWhiteSpace(source.charCodeAt(index))) {
+           ++index;
+        }
+    }
+
+    function getIdentifier() {
+        var start, ch;
+
+        start = index++;
+        while (index < length) {
+            ch = source.charCodeAt(index);
+            if (isIdentifierPart(ch)) {
+                ++index;
+            } else {
+                break;
+            }
+        }
+
+        return source.slice(start, index);
+    }
+
+    function scanIdentifier() {
+        var start, id, type;
+
+        start = index;
+
+        id = getIdentifier();
+
+        // There is no keyword or literal with only one character.
+        // Thus, it must be an identifier.
+        if (id.length === 1) {
+            type = Token.Identifier;
+        } else if (isKeyword(id)) {
+            type = Token.Keyword;
+        } else if (id === 'null') {
+            type = Token.NullLiteral;
+        } else if (id === 'true' || id === 'false') {
+            type = Token.BooleanLiteral;
+        } else {
+            type = Token.Identifier;
+        }
+
+        return {
+            type: type,
+            value: id,
+            range: [start, index]
+        };
+    }
+
+
+    // 7.7 Punctuators
+
+    function scanPunctuator() {
+        var start = index,
+            code = source.charCodeAt(index),
+            code2,
+            ch1 = source[index],
+            ch2;
+
+        switch (code) {
+
+        // Check for most common single-character punctuators.
+        case 46:   // . dot
+        case 40:   // ( open bracket
+        case 41:   // ) close bracket
+        case 59:   // ; semicolon
+        case 44:   // , comma
+        case 123:  // { open curly brace
+        case 125:  // } close curly brace
+        case 91:   // [
+        case 93:   // ]
+        case 58:   // :
+        case 63:   // ?
+            ++index;
+            return {
+                type: Token.Punctuator,
+                value: String.fromCharCode(code),
+                range: [start, index]
+            };
+
+        default:
+            code2 = source.charCodeAt(index + 1);
+
+            // '=' (char #61) marks an assignment or comparison operator.
+            if (code2 === 61) {
+                switch (code) {
+                case 37:  // %
+                case 38:  // &
+                case 42:  // *:
+                case 43:  // +
+                case 45:  // -
+                case 47:  // /
+                case 60:  // <
+                case 62:  // >
+                case 124: // |
+                    index += 2;
+                    return {
+                        type: Token.Punctuator,
+                        value: String.fromCharCode(code) + String.fromCharCode(code2),
+                        range: [start, index]
+                    };
+
+                case 33: // !
+                case 61: // =
+                    index += 2;
+
+                    // !== and ===
+                    if (source.charCodeAt(index) === 61) {
+                        ++index;
+                    }
+                    return {
+                        type: Token.Punctuator,
+                        value: source.slice(start, index),
+                        range: [start, index]
+                    };
+                default:
+                    break;
+                }
+            }
+            break;
+        }
+
+        // Peek more characters.
+
+        ch2 = source[index + 1];
+
+        // Other 2-character punctuators: && ||
+
+        if (ch1 === ch2 && ('&|'.indexOf(ch1) >= 0)) {
+            index += 2;
+            return {
+                type: Token.Punctuator,
+                value: ch1 + ch2,
+                range: [start, index]
+            };
+        }
+
+        if ('<>=!+-*%&|^/'.indexOf(ch1) >= 0) {
+            ++index;
+            return {
+                type: Token.Punctuator,
+                value: ch1,
+                range: [start, index]
+            };
+        }
+
+        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+    }
+
+    // 7.8.3 Numeric Literals
+    function scanNumericLiteral() {
+        var number, start, ch;
+
+        ch = source[index];
+        assert(isDecimalDigit(ch.charCodeAt(0)) || (ch === '.'),
+            'Numeric literal must start with a decimal digit or a decimal point');
+
+        start = index;
+        number = '';
+        if (ch !== '.') {
+            number = source[index++];
+            ch = source[index];
+
+            // Hex number starts with '0x'.
+            // Octal number starts with '0'.
+            if (number === '0') {
+                // decimal number starts with '0' such as '09' is illegal.
+                if (ch && isDecimalDigit(ch.charCodeAt(0))) {
+                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                }
+            }
+
+            while (isDecimalDigit(source.charCodeAt(index))) {
+                number += source[index++];
+            }
+            ch = source[index];
+        }
+
+        if (ch === '.') {
+            number += source[index++];
+            while (isDecimalDigit(source.charCodeAt(index))) {
+                number += source[index++];
+            }
+            ch = source[index];
+        }
+
+        if (ch === 'e' || ch === 'E') {
+            number += source[index++];
+
+            ch = source[index];
+            if (ch === '+' || ch === '-') {
+                number += source[index++];
+            }
+            if (isDecimalDigit(source.charCodeAt(index))) {
+                while (isDecimalDigit(source.charCodeAt(index))) {
+                    number += source[index++];
+                }
+            } else {
+                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+            }
+        }
+
+        if (isIdentifierStart(source.charCodeAt(index))) {
+            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+        }
+
+        return {
+            type: Token.NumericLiteral,
+            value: parseFloat(number),
+            range: [start, index]
+        };
+    }
+
+    // 7.8.4 String Literals
+
+    function scanStringLiteral() {
+        var str = '', quote, start, ch, octal = false;
+
+        quote = source[index];
+        assert((quote === '\'' || quote === '"'),
+            'String literal must starts with a quote');
+
+        start = index;
+        ++index;
+
+        while (index < length) {
+            ch = source[index++];
+
+            if (ch === quote) {
+                quote = '';
+                break;
+            } else if (ch === '\\') {
+                ch = source[index++];
+                if (!ch || !isLineTerminator(ch.charCodeAt(0))) {
+                    switch (ch) {
+                    case 'n':
+                        str += '\n';
+                        break;
+                    case 'r':
+                        str += '\r';
+                        break;
+                    case 't':
+                        str += '\t';
+                        break;
+                    case 'b':
+                        str += '\b';
+                        break;
+                    case 'f':
+                        str += '\f';
+                        break;
+                    case 'v':
+                        str += '\x0B';
+                        break;
+
+                    default:
+                        str += ch;
+                        break;
+                    }
+                } else {
+                    if (ch ===  '\r' && source[index] === '\n') {
+                        ++index;
+                    }
+                }
+            } else if (isLineTerminator(ch.charCodeAt(0))) {
+                break;
+            } else {
+                str += ch;
+            }
+        }
+
+        if (quote !== '') {
+            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+        }
+
+        return {
+            type: Token.StringLiteral,
+            value: str,
+            octal: octal,
+            range: [start, index]
+        };
+    }
+
+    function isIdentifierName(token) {
+        return token.type === Token.Identifier ||
+            token.type === Token.Keyword ||
+            token.type === Token.BooleanLiteral ||
+            token.type === Token.NullLiteral;
+    }
+
+    function advance() {
+        var ch;
+
+        skipWhitespace();
+
+        if (index >= length) {
+            return {
+                type: Token.EOF,
+                range: [index, index]
+            };
+        }
+
+        ch = source.charCodeAt(index);
+
+        // Very common: ( and ) and ;
+        if (ch === 40 || ch === 41 || ch === 58) {
+            return scanPunctuator();
+        }
+
+        // String literal starts with single quote (#39) or double quote (#34).
+        if (ch === 39 || ch === 34) {
+            return scanStringLiteral();
+        }
+
+        if (isIdentifierStart(ch)) {
+            return scanIdentifier();
+        }
+
+        // Dot (.) char #46 can also start a floating-point number, hence the need
+        // to check the next character.
+        if (ch === 46) {
+            if (isDecimalDigit(source.charCodeAt(index + 1))) {
+                return scanNumericLiteral();
+            }
+            return scanPunctuator();
+        }
+
+        if (isDecimalDigit(ch)) {
+            return scanNumericLiteral();
+        }
+
+        return scanPunctuator();
+    }
+
+    function lex() {
+        var token;
+
+        token = lookahead;
+        index = token.range[1];
+
+        lookahead = advance();
+
+        index = token.range[1];
+
+        return token;
+    }
+
+    function peek() {
+        var pos;
+
+        pos = index;
+        lookahead = advance();
+        index = pos;
+    }
+
+    // Throw an exception
+
+    function throwError(token, messageFormat) {
+        var error,
+            args = Array.prototype.slice.call(arguments, 2),
+            msg = messageFormat.replace(
+                /%(\d)/g,
+                function (whole, index) {
+                    assert(index < args.length, 'Message reference must be in range');
+                    return args[index];
+                }
+            );
+
+        error = new Error(msg);
+        error.index = index;
+        error.description = msg;
+        throw error;
+    }
+
+    // Throw an exception because of the token.
+
+    function throwUnexpected(token) {
+        throwError(token, Messages.UnexpectedToken, token.value);
+    }
+
+    // Expect the next token to match the specified punctuator.
+    // If not, an exception will be thrown.
+
+    function expect(value) {
+        var token = lex();
+        if (token.type !== Token.Punctuator || token.value !== value) {
+            throwUnexpected(token);
+        }
+    }
+
+    // Return true if the next token matches the specified punctuator.
+
+    function match(value) {
+        return lookahead.type === Token.Punctuator && lookahead.value === value;
+    }
+
+    // Return true if the next token matches the specified keyword
+
+    function matchKeyword(keyword) {
+        return lookahead.type === Token.Keyword && lookahead.value === keyword;
+    }
+
+    function consumeSemicolon() {
+        // Catch the very common case first: immediately a semicolon (char #59).
+        if (source.charCodeAt(index) === 59) {
+            lex();
+            return;
+        }
+
+        skipWhitespace();
+
+        if (match(';')) {
+            lex();
+            return;
+        }
+
+        if (lookahead.type !== Token.EOF && !match('}')) {
+            throwUnexpected(lookahead);
+        }
+    }
+
+    // 11.1.4 Array Initialiser
+
+    function parseArrayInitialiser() {
+        var elements = [];
+
+        expect('[');
+
+        while (!match(']')) {
+            if (match(',')) {
+                lex();
+                elements.push(null);
+            } else {
+                elements.push(parseExpression());
+
+                if (!match(']')) {
+                    expect(',');
+                }
+            }
+        }
+
+        expect(']');
+
+        return delegate.createArrayExpression(elements);
+    }
+
+    // 11.1.5 Object Initialiser
+
+    function parseObjectPropertyKey() {
+        var token;
+
+        skipWhitespace();
+        token = lex();
+
+        // Note: This function is called only from parseObjectProperty(), where
+        // EOF and Punctuator tokens are already filtered out.
+        if (token.type === Token.StringLiteral || token.type === Token.NumericLiteral) {
+            return delegate.createLiteral(token);
+        }
+
+        return delegate.createIdentifier(token.value);
+    }
+
+    function parseObjectProperty() {
+        var token, key;
+
+        token = lookahead;
+        skipWhitespace();
+
+        if (token.type === Token.EOF || token.type === Token.Punctuator) {
+            throwUnexpected(token);
+        }
+
+        key = parseObjectPropertyKey();
+        expect(':');
+        return delegate.createProperty('init', key, parseExpression());
+    }
+
+    function parseObjectInitialiser() {
+        var properties = [];
+
+        expect('{');
+
+        while (!match('}')) {
+            properties.push(parseObjectProperty());
+
+            if (!match('}')) {
+                expect(',');
+            }
+        }
+
+        expect('}');
+
+        return delegate.createObjectExpression(properties);
+    }
+
+    // 11.1.6 The Grouping Operator
+
+    function parseGroupExpression() {
+        var expr;
+
+        expect('(');
+
+        expr = parseExpression();
+
+        expect(')');
+
+        return expr;
+    }
+
+
+    // 11.1 Primary Expressions
+
+    function parsePrimaryExpression() {
+        var type, token, expr;
+
+        if (match('(')) {
+            return parseGroupExpression();
+        }
+
+        type = lookahead.type;
+
+        if (type === Token.Identifier) {
+            expr = delegate.createIdentifier(lex().value);
+        } else if (type === Token.StringLiteral || type === Token.NumericLiteral) {
+            expr = delegate.createLiteral(lex());
+        } else if (type === Token.Keyword) {
+            if (matchKeyword('this')) {
+                lex();
+                expr = delegate.createThisExpression();
+            }
+        } else if (type === Token.BooleanLiteral) {
+            token = lex();
+            token.value = (token.value === 'true');
+            expr = delegate.createLiteral(token);
+        } else if (type === Token.NullLiteral) {
+            token = lex();
+            token.value = null;
+            expr = delegate.createLiteral(token);
+        } else if (match('[')) {
+            expr = parseArrayInitialiser();
+        } else if (match('{')) {
+            expr = parseObjectInitialiser();
+        }
+
+        if (expr) {
+            return expr;
+        }
+
+        throwUnexpected(lex());
+    }
+
+    // 11.2 Left-Hand-Side Expressions
+
+    function parseArguments() {
+        var args = [];
+
+        expect('(');
+
+        if (!match(')')) {
+            while (index < length) {
+                args.push(parseExpression());
+                if (match(')')) {
+                    break;
+                }
+                expect(',');
+            }
+        }
+
+        expect(')');
+
+        return args;
+    }
+
+    function parseNonComputedProperty() {
+        var token;
+
+        token = lex();
+
+        if (!isIdentifierName(token)) {
+            throwUnexpected(token);
+        }
+
+        return delegate.createIdentifier(token.value);
+    }
+
+    function parseNonComputedMember() {
+        expect('.');
+
+        return parseNonComputedProperty();
+    }
+
+    function parseComputedMember() {
+        var expr;
+
+        expect('[');
+
+        expr = parseExpression();
+
+        expect(']');
+
+        return expr;
+    }
+
+    function parseLeftHandSideExpression() {
+        var expr, args, property;
+
+        expr = parsePrimaryExpression();
+
+        while (true) {
+            if (match('[')) {
+                property = parseComputedMember();
+                expr = delegate.createMemberExpression('[', expr, property);
+            } else if (match('.')) {
+                property = parseNonComputedMember();
+                expr = delegate.createMemberExpression('.', expr, property);
+            } else if (match('(')) {
+                args = parseArguments();
+                expr = delegate.createCallExpression(expr, args);
+            } else {
+                break;
+            }
+        }
+
+        return expr;
+    }
+
+    // 11.3 Postfix Expressions
+
+    var parsePostfixExpression = parseLeftHandSideExpression;
+
+    // 11.4 Unary Operators
+
+    function parseUnaryExpression() {
+        var token, expr;
+
+        if (lookahead.type !== Token.Punctuator && lookahead.type !== Token.Keyword) {
+            expr = parsePostfixExpression();
+        } else if (match('+') || match('-') || match('!')) {
+            token = lex();
+            expr = parseUnaryExpression();
+            expr = delegate.createUnaryExpression(token.value, expr);
+        } else if (matchKeyword('delete') || matchKeyword('void') || matchKeyword('typeof')) {
+            throwError({}, Messages.UnexpectedToken);
+        } else {
+            expr = parsePostfixExpression();
+        }
+
+        return expr;
+    }
+
+    function binaryPrecedence(token) {
+        var prec = 0;
+
+        if (token.type !== Token.Punctuator && token.type !== Token.Keyword) {
+            return 0;
+        }
+
+        switch (token.value) {
+        case '||':
+            prec = 1;
+            break;
+
+        case '&&':
+            prec = 2;
+            break;
+
+        case '==':
+        case '!=':
+        case '===':
+        case '!==':
+            prec = 6;
+            break;
+
+        case '<':
+        case '>':
+        case '<=':
+        case '>=':
+        case 'instanceof':
+            prec = 7;
+            break;
+
+        case 'in':
+            prec = 7;
+            break;
+
+        case '+':
+        case '-':
+            prec = 9;
+            break;
+
+        case '*':
+        case '/':
+        case '%':
+            prec = 11;
+            break;
+
+        default:
+            break;
+        }
+
+        return prec;
+    }
+
+    // 11.5 Multiplicative Operators
+    // 11.6 Additive Operators
+    // 11.7 Bitwise Shift Operators
+    // 11.8 Relational Operators
+    // 11.9 Equality Operators
+    // 11.10 Binary Bitwise Operators
+    // 11.11 Binary Logical Operators
+
+    function parseBinaryExpression() {
+        var expr, token, prec, stack, right, operator, left, i;
+
+        left = parseUnaryExpression();
+
+        token = lookahead;
+        prec = binaryPrecedence(token);
+        if (prec === 0) {
+            return left;
+        }
+        token.prec = prec;
+        lex();
+
+        right = parseUnaryExpression();
+
+        stack = [left, token, right];
+
+        while ((prec = binaryPrecedence(lookahead)) > 0) {
+
+            // Reduce: make a binary expression from the three topmost entries.
+            while ((stack.length > 2) && (prec <= stack[stack.length - 2].prec)) {
+                right = stack.pop();
+                operator = stack.pop().value;
+                left = stack.pop();
+                expr = delegate.createBinaryExpression(operator, left, right);
+                stack.push(expr);
+            }
+
+            // Shift.
+            token = lex();
+            token.prec = prec;
+            stack.push(token);
+            expr = parseUnaryExpression();
+            stack.push(expr);
+        }
+
+        // Final reduce to clean-up the stack.
+        i = stack.length - 1;
+        expr = stack[i];
+        while (i > 1) {
+            expr = delegate.createBinaryExpression(stack[i - 1].value, stack[i - 2], expr);
+            i -= 2;
+        }
+
+        return expr;
+    }
+
+
+    // 11.12 Conditional Operator
+
+    function parseConditionalExpression() {
+        var expr, consequent, alternate;
+
+        expr = parseBinaryExpression();
+
+        if (match('?')) {
+            lex();
+            consequent = parseConditionalExpression();
+            expect(':');
+            alternate = parseConditionalExpression();
+
+            expr = delegate.createConditionalExpression(expr, consequent, alternate);
+        }
+
+        return expr;
+    }
+
+    // Simplification since we do not support AssignmentExpression.
+    var parseExpression = parseConditionalExpression;
+
+    // Polymer Syntax extensions
+
+    // Filter ::
+    //   Identifier
+    //   Identifier "(" ")"
+    //   Identifier "(" FilterArguments ")"
+
+    function parseFilter() {
+        var identifier, args;
+
+        identifier = lex();
+
+        if (identifier.type !== Token.Identifier) {
+            throwUnexpected(identifier);
+        }
+
+        args = match('(') ? parseArguments() : [];
+
+        return delegate.createFilter(identifier.value, args);
+    }
+
+    // Filters ::
+    //   "|" Filter
+    //   Filters "|" Filter
+
+    function parseFilters() {
+        while (match('|')) {
+            lex();
+            parseFilter();
+        }
+    }
+
+    // TopLevel ::
+    //   LabelledExpressions
+    //   AsExpression
+    //   InExpression
+    //   FilterExpression
+
+    // AsExpression ::
+    //   FilterExpression as Identifier
+
+    // InExpression ::
+    //   Identifier, Identifier in FilterExpression
+    //   Identifier in FilterExpression
+
+    // FilterExpression ::
+    //   Expression
+    //   Expression Filters
+
+    function parseTopLevel() {
+        skipWhitespace();
+        peek();
+
+        var expr = parseExpression();
+        if (expr) {
+            if (lookahead.value === ',' || lookahead.value == 'in' &&
+                       expr.type === Syntax.Identifier) {
+                parseInExpression(expr);
+            } else {
+                parseFilters();
+                if (lookahead.value === 'as') {
+                    parseAsExpression(expr);
+                } else {
+                    delegate.createTopLevel(expr);
+                }
+            }
+        }
+
+        if (lookahead.type !== Token.EOF) {
+            throwUnexpected(lookahead);
+        }
+    }
+
+    function parseAsExpression(expr) {
+        lex();  // as
+        var identifier = lex().value;
+        delegate.createAsExpression(expr, identifier);
+    }
+
+    function parseInExpression(identifier) {
+        var indexName;
+        if (lookahead.value === ',') {
+            lex();
+            if (lookahead.type !== Token.Identifier)
+                throwUnexpected(lookahead);
+            indexName = lex().value;
+        }
+
+        lex();  // in
+        var expr = parseExpression();
+        parseFilters();
+        delegate.createInExpression(identifier.name, indexName, expr);
+    }
+
+    function parse(code, inDelegate) {
+        delegate = inDelegate;
+        source = code;
+        index = 0;
+        length = source.length;
+        lookahead = null;
+        state = {
+            labelSet: {}
+        };
+
+        return parseTopLevel();
+    }
+
+    global.esprima = {
+        parse: parse
+    };
+})(this);
+
+// Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+// This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+// The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+// The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+// Code distributed by Google as part of the polymer project is also
+// subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+
+(function (global) {
+  'use strict';
+
+  function prepareBinding(expressionText, name, node, filterRegistry) {
+    var expression;
+    try {
+      expression = getExpression(expressionText);
+      if (expression.scopeIdent &&
+          (node.nodeType !== Node.ELEMENT_NODE ||
+           node.tagName !== 'TEMPLATE' ||
+           (name !== 'bind' && name !== 'repeat'))) {
+        throw Error('as and in can only be used within <template bind/repeat>');
+      }
+    } catch (ex) {
+      console.error('Invalid expression syntax: ' + expressionText, ex);
+      return;
+    }
+
+    return function(model, node, oneTime) {
+      var binding = expression.getBinding(model, filterRegistry, oneTime);
+      if (expression.scopeIdent && binding) {
+        node.polymerExpressionScopeIdent_ = expression.scopeIdent;
+        if (expression.indexIdent)
+          node.polymerExpressionIndexIdent_ = expression.indexIdent;
+      }
+
+      return binding;
+    }
+  }
+
+  // TODO(rafaelw): Implement simple LRU.
+  var expressionParseCache = Object.create(null);
+
+  function getExpression(expressionText) {
+    var expression = expressionParseCache[expressionText];
+    if (!expression) {
+      var delegate = new ASTDelegate();
+      esprima.parse(expressionText, delegate);
+      expression = new Expression(delegate);
+      expressionParseCache[expressionText] = expression;
+    }
+    return expression;
+  }
+
+  function Literal(value) {
+    this.value = value;
+    this.valueFn_ = undefined;
+  }
+
+  Literal.prototype = {
+    valueFn: function() {
+      if (!this.valueFn_) {
+        var value = this.value;
+        this.valueFn_ = function() {
+          return value;
+        }
+      }
+
+      return this.valueFn_;
+    }
+  }
+
+  function IdentPath(name) {
+    this.name = name;
+    this.path = Path.get(name);
+  }
+
+  IdentPath.prototype = {
+    valueFn: function() {
+      if (!this.valueFn_) {
+        var name = this.name;
+        var path = this.path;
+        this.valueFn_ = function(model, observer) {
+          if (observer)
+            observer.addPath(model, path);
+
+          return path.getValueFrom(model);
+        }
+      }
+
+      return this.valueFn_;
+    },
+
+    setValue: function(model, newValue) {
+      if (this.path.length == 1)
+        model = findScope(model, this.path[0]);
+
+      return this.path.setValueFrom(model, newValue);
+    }
+  };
+
+  function MemberExpression(object, property, accessor) {
+    this.computed = accessor == '[';
+
+    this.dynamicDeps = typeof object == 'function' ||
+                       object.dynamicDeps ||
+                       (this.computed && !(property instanceof Literal));
+
+    this.simplePath =
+        !this.dynamicDeps &&
+        (property instanceof IdentPath || property instanceof Literal) &&
+        (object instanceof MemberExpression || object instanceof IdentPath);
+
+    this.object = this.simplePath ? object : getFn(object);
+    this.property = !this.computed || this.simplePath ?
+        property : getFn(property);
+  }
+
+  MemberExpression.prototype = {
+    get fullPath() {
+      if (!this.fullPath_) {
+
+        var parts = this.object instanceof MemberExpression ?
+            this.object.fullPath.slice() : [this.object.name];
+        parts.push(this.property instanceof IdentPath ?
+            this.property.name : this.property.value);
+        this.fullPath_ = Path.get(parts);
+      }
+
+      return this.fullPath_;
+    },
+
+    valueFn: function() {
+      if (!this.valueFn_) {
+        var object = this.object;
+
+        if (this.simplePath) {
+          var path = this.fullPath;
+
+          this.valueFn_ = function(model, observer) {
+            if (observer)
+              observer.addPath(model, path);
+
+            return path.getValueFrom(model);
+          };
+        } else if (!this.computed) {
+          var path = Path.get(this.property.name);
+
+          this.valueFn_ = function(model, observer, filterRegistry) {
+            var context = object(model, observer, filterRegistry);
+
+            if (observer)
+              observer.addPath(context, path);
+
+            return path.getValueFrom(context);
+          }
+        } else {
+          // Computed property.
+          var property = this.property;
+
+          this.valueFn_ = function(model, observer, filterRegistry) {
+            var context = object(model, observer, filterRegistry);
+            var propName = property(model, observer, filterRegistry);
+            if (observer)
+              observer.addPath(context, [propName]);
+
+            return context ? context[propName] : undefined;
+          };
+        }
+      }
+      return this.valueFn_;
+    },
+
+    setValue: function(model, newValue) {
+      if (this.simplePath) {
+        this.fullPath.setValueFrom(model, newValue);
+        return newValue;
+      }
+
+      var object = this.object(model);
+      var propName = this.property instanceof IdentPath ? this.property.name :
+          this.property(model);
+      return object[propName] = newValue;
+    }
+  };
+
+  function Filter(name, args) {
+    this.name = name;
+    this.args = [];
+    for (var i = 0; i < args.length; i++) {
+      this.args[i] = getFn(args[i]);
+    }
+  }
+
+  Filter.prototype = {
+    transform: function(model, observer, filterRegistry, toModelDirection,
+                        initialArgs) {
+      var fn = filterRegistry[this.name];
+      var context = model;
+      if (fn) {
+        context = undefined;
+      } else {
+        fn = context[this.name];
+        if (!fn) {
+          console.error('Cannot find function or filter: ' + this.name);
+          return;
+        }
+      }
+
+      // If toModelDirection is falsey, then the "normal" (dom-bound) direction
+      // is used. Otherwise, it looks for a 'toModel' property function on the
+      // object.
+      if (toModelDirection) {
+        fn = fn.toModel;
+      } else if (typeof fn.toDOM == 'function') {
+        fn = fn.toDOM;
+      }
+
+      if (typeof fn != 'function') {
+        console.error('Cannot find function or filter: ' + this.name);
+        return;
+      }
+
+      var args = initialArgs || [];
+      for (var i = 0; i < this.args.length; i++) {
+        args.push(getFn(this.args[i])(model, observer, filterRegistry));
+      }
+
+      return fn.apply(context, args);
+    }
+  };
+
+  function notImplemented() { throw Error('Not Implemented'); }
+
+  var unaryOperators = {
+    '+': function(v) { return +v; },
+    '-': function(v) { return -v; },
+    '!': function(v) { return !v; }
+  };
+
+  var binaryOperators = {
+    '+': function(l, r) { return l+r; },
+    '-': function(l, r) { return l-r; },
+    '*': function(l, r) { return l*r; },
+    '/': function(l, r) { return l/r; },
+    '%': function(l, r) { return l%r; },
+    '<': function(l, r) { return l<r; },
+    '>': function(l, r) { return l>r; },
+    '<=': function(l, r) { return l<=r; },
+    '>=': function(l, r) { return l>=r; },
+    '==': function(l, r) { return l==r; },
+    '!=': function(l, r) { return l!=r; },
+    '===': function(l, r) { return l===r; },
+    '!==': function(l, r) { return l!==r; },
+    '&&': function(l, r) { return l&&r; },
+    '||': function(l, r) { return l||r; },
+  };
+
+  function getFn(arg) {
+    return typeof arg == 'function' ? arg : arg.valueFn();
+  }
+
+  function ASTDelegate() {
+    this.expression = null;
+    this.filters = [];
+    this.deps = {};
+    this.currentPath = undefined;
+    this.scopeIdent = undefined;
+    this.indexIdent = undefined;
+    this.dynamicDeps = false;
+  }
+
+  ASTDelegate.prototype = {
+    createUnaryExpression: function(op, argument) {
+      if (!unaryOperators[op])
+        throw Error('Disallowed operator: ' + op);
+
+      argument = getFn(argument);
+
+      return function(model, observer, filterRegistry) {
+        return unaryOperators[op](argument(model, observer, filterRegistry));
+      };
+    },
+
+    createBinaryExpression: function(op, left, right) {
+      if (!binaryOperators[op])
+        throw Error('Disallowed operator: ' + op);
+
+      left = getFn(left);
+      right = getFn(right);
+
+      switch (op) {
+        case '||':
+          this.dynamicDeps = true;
+          return function(model, observer, filterRegistry) {
+            return left(model, observer, filterRegistry) ||
+                right(model, observer, filterRegistry);
+          };
+        case '&&':
+          this.dynamicDeps = true;
+          return function(model, observer, filterRegistry) {
+            return left(model, observer, filterRegistry) &&
+                right(model, observer, filterRegistry);
+          };
+      }
+
+      return function(model, observer, filterRegistry) {
+        return binaryOperators[op](left(model, observer, filterRegistry),
+                                   right(model, observer, filterRegistry));
+      };
+    },
+
+    createConditionalExpression: function(test, consequent, alternate) {
+      test = getFn(test);
+      consequent = getFn(consequent);
+      alternate = getFn(alternate);
+
+      this.dynamicDeps = true;
+
+      return function(model, observer, filterRegistry) {
+        return test(model, observer, filterRegistry) ?
+            consequent(model, observer, filterRegistry) :
+            alternate(model, observer, filterRegistry);
+      }
+    },
+
+    createIdentifier: function(name) {
+      var ident = new IdentPath(name);
+      ident.type = 'Identifier';
+      return ident;
+    },
+
+    createMemberExpression: function(accessor, object, property) {
+      var ex = new MemberExpression(object, property, accessor);
+      if (ex.dynamicDeps)
+        this.dynamicDeps = true;
+      return ex;
+    },
+
+    createCallExpression: function(expression, args) {
+      if (!(expression instanceof IdentPath))
+        throw Error('Only identifier function invocations are allowed');
+
+      var filter = new Filter(expression.name, args);
+
+      return function(model, observer, filterRegistry) {
+        return filter.transform(model, observer, filterRegistry, false);
+      };
+    },
+
+    createLiteral: function(token) {
+      return new Literal(token.value);
+    },
+
+    createArrayExpression: function(elements) {
+      for (var i = 0; i < elements.length; i++)
+        elements[i] = getFn(elements[i]);
+
+      return function(model, observer, filterRegistry) {
+        var arr = []
+        for (var i = 0; i < elements.length; i++)
+          arr.push(elements[i](model, observer, filterRegistry));
+        return arr;
+      }
+    },
+
+    createProperty: function(kind, key, value) {
+      return {
+        key: key instanceof IdentPath ? key.name : key.value,
+        value: value
+      };
+    },
+
+    createObjectExpression: function(properties) {
+      for (var i = 0; i < properties.length; i++)
+        properties[i].value = getFn(properties[i].value);
+
+      return function(model, observer, filterRegistry) {
+        var obj = {};
+        for (var i = 0; i < properties.length; i++)
+          obj[properties[i].key] =
+              properties[i].value(model, observer, filterRegistry);
+        return obj;
+      }
+    },
+
+    createFilter: function(name, args) {
+      this.filters.push(new Filter(name, args));
+    },
+
+    createAsExpression: function(expression, scopeIdent) {
+      this.expression = expression;
+      this.scopeIdent = scopeIdent;
+    },
+
+    createInExpression: function(scopeIdent, indexIdent, expression) {
+      this.expression = expression;
+      this.scopeIdent = scopeIdent;
+      this.indexIdent = indexIdent;
+    },
+
+    createTopLevel: function(expression) {
+      this.expression = expression;
+    },
+
+    createThisExpression: notImplemented
+  }
+
+  function ConstantObservable(value) {
+    this.value_ = value;
+  }
+
+  ConstantObservable.prototype = {
+    open: function() { return this.value_; },
+    discardChanges: function() { return this.value_; },
+    deliver: function() {},
+    close: function() {},
+  }
+
+  function Expression(delegate) {
+    this.scopeIdent = delegate.scopeIdent;
+    this.indexIdent = delegate.indexIdent;
+
+    if (!delegate.expression)
+      throw Error('No expression found.');
+
+    this.expression = delegate.expression;
+    getFn(this.expression); // forces enumeration of path dependencies
+
+    this.filters = delegate.filters;
+    this.dynamicDeps = delegate.dynamicDeps;
+  }
+
+  Expression.prototype = {
+    getBinding: function(model, filterRegistry, oneTime) {
+      if (oneTime)
+        return this.getValue(model, undefined, filterRegistry);
+
+      var observer = new CompoundObserver();
+      // captures deps.
+      var firstValue = this.getValue(model, observer, filterRegistry);
+      var firstTime = true;
+      var self = this;
+
+      function valueFn() {
+        // deps cannot have changed on first value retrieval.
+        if (firstTime) {
+          firstTime = false;
+          return firstValue;
+        }
+
+        if (self.dynamicDeps)
+          observer.startReset();
+
+        var value = self.getValue(model,
+                                  self.dynamicDeps ? observer : undefined,
+                                  filterRegistry);
+        if (self.dynamicDeps)
+          observer.finishReset();
+
+        return value;
+      }
+
+      function setValueFn(newValue) {
+        self.setValue(model, newValue, filterRegistry);
+        return newValue;
+      }
+
+      return new ObserverTransform(observer, valueFn, setValueFn, true);
+    },
+
+    getValue: function(model, observer, filterRegistry) {
+      var value = getFn(this.expression)(model, observer, filterRegistry);
+      for (var i = 0; i < this.filters.length; i++) {
+        value = this.filters[i].transform(model, observer, filterRegistry,
+            false, [value]);
+      }
+
+      return value;
+    },
+
+    setValue: function(model, newValue, filterRegistry) {
+      var count = this.filters ? this.filters.length : 0;
+      while (count-- > 0) {
+        newValue = this.filters[count].transform(model, undefined,
+            filterRegistry, true, [newValue]);
+      }
+
+      if (this.expression.setValue)
+        return this.expression.setValue(model, newValue);
+    }
+  }
+
+  /**
+   * Converts a style property name to a css property name. For example:
+   * "WebkitUserSelect" to "-webkit-user-select"
+   */
+  function convertStylePropertyName(name) {
+    return String(name).replace(/[A-Z]/g, function(c) {
+      return '-' + c.toLowerCase();
+    });
+  }
+
+  var parentScopeName = '@' + Math.random().toString(36).slice(2);
+
+  // Single ident paths must bind directly to the appropriate scope object.
+  // I.e. Pushed values in two-bindings need to be assigned to the actual model
+  // object.
+  function findScope(model, prop) {
+    while (model[parentScopeName] &&
+           !Object.prototype.hasOwnProperty.call(model, prop)) {
+      model = model[parentScopeName];
+    }
+
+    return model;
+  }
+
+  function isLiteralExpression(pathString) {
+    switch (pathString) {
+      case '':
+        return false;
+
+      case 'false':
+      case 'null':
+      case 'true':
+        return true;
+    }
+
+    if (!isNaN(Number(pathString)))
+      return true;
+
+    return false;
+  };
+
+  function PolymerExpressions() {}
+
+  PolymerExpressions.prototype = {
+    // "built-in" filters
+    styleObject: function(value) {
+      var parts = [];
+      for (var key in value) {
+        parts.push(convertStylePropertyName(key) + ': ' + value[key]);
+      }
+      return parts.join('; ');
+    },
+
+    tokenList: function(value) {
+      var tokens = [];
+      for (var key in value) {
+        if (value[key])
+          tokens.push(key);
+      }
+      return tokens.join(' ');
+    },
+
+    // binding delegate API
+    prepareInstancePositionChanged: function(template) {
+      var indexIdent = template.polymerExpressionIndexIdent_;
+      if (!indexIdent)
+        return;
+
+      return function(templateInstance, index) {
+        templateInstance.model[indexIdent] = index;
+      };
+    },
+
+    prepareBinding: function(pathString, name, node) {
+      var path = Path.get(pathString);
+
+      if (!isLiteralExpression(pathString) && path.valid) {
+        if (path.length == 1) {
+          return function(model, node, oneTime) {
+            if (oneTime)
+              return path.getValueFrom(model);
+
+            var scope = findScope(model, path[0]);
+            return new PathObserver(scope, path);
+          };
+        }
+        return; // bail out early if pathString is simple path.
+      }
+
+      return prepareBinding(pathString, name, node, this);
+    },
+
+    prepareInstanceModel: function(template) {
+      var scopeName = template.polymerExpressionScopeIdent_;
+      if (!scopeName)
+        return;
+
+      var parentScope = template.templateInstance ?
+          template.templateInstance.model :
+          template.model;
+
+      var indexName = template.polymerExpressionIndexIdent_;
+
+      return function(model) {
+        return createScopeObject(parentScope, model, scopeName, indexName);
+      };
+    }
+  };
+
+  var createScopeObject = ('__proto__' in {}) ?
+    function(parentScope, model, scopeName, indexName) {
+      var scope = {};
+      scope[scopeName] = model;
+      scope[indexName] = undefined;
+      scope[parentScopeName] = parentScope;
+      scope.__proto__ = parentScope;
+      return scope;
+    } :
+    function(parentScope, model, scopeName, indexName) {
+      var scope = Object.create(parentScope);
+      Object.defineProperty(scope, scopeName,
+          { value: model, configurable: true, writable: true });
+      Object.defineProperty(scope, indexName,
+          { value: undefined, configurable: true, writable: true });
+      Object.defineProperty(scope, parentScopeName,
+          { value: parentScope, configurable: true, writable: true });
+      return scope;
+    };
+
+  global.PolymerExpressions = PolymerExpressions;
+  PolymerExpressions.getExpression = getExpression;
+})(this);
+
+Polymer = {
+  version: '0.5.1'
+};
+
+// TODO(sorvell): this ensures Polymer is an object and not a function
+// Platform is currently defining it as a function to allow for async loading
+// of polymer; once we refine the loading process this likely goes away.
+if (typeof window.Polymer === 'function') {
+  Polymer = {};
+}
+
+
+(function(scope) {
+
+  function withDependencies(task, depends) {
+    depends = depends || [];
+    if (!depends.map) {
+      depends = [depends];
+    }
+    return task.apply(this, depends.map(marshal));
+  }
+
+  function module(name, dependsOrFactory, moduleFactory) {
+    var module;
+    switch (arguments.length) {
+      case 0:
+        return;
+      case 1:
+        module = null;
+        break;
+      case 2:
+        // dependsOrFactory is `factory` in this case
+        module = dependsOrFactory.apply(this);
+        break;
+      default:
+        // dependsOrFactory is `depends` in this case
+        module = withDependencies(moduleFactory, dependsOrFactory);
+        break;
+    }
+    modules[name] = module;
+  };
+
+  function marshal(name) {
+    return modules[name];
+  }
+
+  var modules = {};
+
+  function using(depends, task) {
+    HTMLImports.whenImportsReady(function() {
+      withDependencies(task, depends);
+    });
+  };
+
+  // exports
+
+  scope.marshal = marshal;
+  // `module` confuses commonjs detectors
+  scope.modularize = module;
+  scope.using = using;
+
+})(window);
+
+/*
+	Build only script.
+
+  Ensures scripts needed for basic x-platform compatibility
+  will be run when platform.js is not loaded.
+ */
+if (!window.WebComponents) {
+
+/*
+	On supported platforms, platform.js is not needed. To retain compatibility
+	with the polyfills, we stub out minimal functionality.
+ */
+if (!window.WebComponents) {
+
+  WebComponents = {
+  	flush: function() {},
+    flags: {log: {}}
+  };
+
+  Platform = WebComponents;
+
+  CustomElements = {
+  	useNative: true,
+    ready: true,
+    takeRecords: function() {},
+    instanceof: function(obj, base) {
+      return obj instanceof base;
+    }
+  };
+  
+  HTMLImports = {
+  	useNative: true
+  };
+
+  
+  addEventListener('HTMLImportsLoaded', function() {
+    document.dispatchEvent(
+      new CustomEvent('WebComponentsReady', {bubbles: true})
+    );
+  });
+
+
+  // ShadowDOM
+  ShadowDOMPolyfill = null;
+  wrap = unwrap = function(n){
+    return n;
+  };
+
+}
+
+/*
+  Create polyfill scope and feature detect native support.
+*/
+window.HTMLImports = window.HTMLImports || {flags:{}};
+
+(function(scope) {
+
+/**
+  Basic setup and simple module executer. We collect modules and then execute
+  the code later, only if it's necessary for polyfilling.
+*/
+var IMPORT_LINK_TYPE = 'import';
+var useNative = Boolean(IMPORT_LINK_TYPE in document.createElement('link'));
+
+/**
+  Support `currentScript` on all browsers as `document._currentScript.`
+
+  NOTE: We cannot polyfill `document.currentScript` because it's not possible
+  both to override and maintain the ability to capture the native value.
+  Therefore we choose to expose `_currentScript` both when native imports
+  and the polyfill are in use.
+*/
+// NOTE: ShadowDOMPolyfill intrusion.
+var hasShadowDOMPolyfill = Boolean(window.ShadowDOMPolyfill);
+var wrap = function(node) {
+  return hasShadowDOMPolyfill ? ShadowDOMPolyfill.wrapIfNeeded(node) : node;
+};
+var rootDocument = wrap(document);
+
+var currentScriptDescriptor = {
+  get: function() {
+    var script = HTMLImports.currentScript || document.currentScript ||
+        // NOTE: only works when called in synchronously executing code.
+        // readyState should check if `loading` but IE10 is
+        // interactive when scripts run so we cheat.
+        (document.readyState !== 'complete' ?
+        document.scripts[document.scripts.length - 1] : null);
+    return wrap(script);
+  },
+  configurable: true
+};
+
+Object.defineProperty(document, '_currentScript', currentScriptDescriptor);
+Object.defineProperty(rootDocument, '_currentScript', currentScriptDescriptor);
+
+/**
+  Add support for the `HTMLImportsLoaded` event and the `HTMLImports.whenReady`
+  method. This api is necessary because unlike the native implementation,
+  script elements do not force imports to resolve. Instead, users should wrap
+  code in either an `HTMLImportsLoaded` hander or after load time in an
+  `HTMLImports.whenReady(callback)` call.
+
+  NOTE: This module also supports these apis under the native implementation.
+  Therefore, if this file is loaded, the same code can be used under both
+  the polyfill and native implementation.
+ */
+
+var isIE = /Trident/.test(navigator.userAgent);
+
+// call a callback when all HTMLImports in the document at call time
+// (or at least document ready) have loaded.
+// 1. ensure the document is in a ready state (has dom), then
+// 2. watch for loading of imports and call callback when done
+function whenReady(callback, doc) {
+  doc = doc || rootDocument;
+  // if document is loading, wait and try again
+  whenDocumentReady(function() {
+    watchImportsLoad(callback, doc);
+  }, doc);
+}
+
+// call the callback when the document is in a ready state (has dom)
+var requiredReadyState = isIE ? 'complete' : 'interactive';
+var READY_EVENT = 'readystatechange';
+function isDocumentReady(doc) {
+  return (doc.readyState === 'complete' ||
+      doc.readyState === requiredReadyState);
+}
+
+// call <callback> when we ensure the document is in a ready state
+function whenDocumentReady(callback, doc) {
+  if (!isDocumentReady(doc)) {
+    var checkReady = function() {
+      if (doc.readyState === 'complete' ||
+          doc.readyState === requiredReadyState) {
+        doc.removeEventListener(READY_EVENT, checkReady);
+        whenDocumentReady(callback, doc);
+      }
+    };
+    doc.addEventListener(READY_EVENT, checkReady);
+  } else if (callback) {
+    callback();
+  }
+}
+
+function markTargetLoaded(event) {
+  event.target.__loaded = true;
+}
+
+// call <callback> when we ensure all imports have loaded
+function watchImportsLoad(callback, doc) {
+  var imports = doc.querySelectorAll('link[rel=import]');
+  var loaded = 0, l = imports.length;
+  function checkDone(d) {
+    if ((loaded == l) && callback) {
+       callback();
+    }
+  }
+  function loadedImport(e) {
+    markTargetLoaded(e);
+    loaded++;
+    checkDone();
+  }
+  if (l) {
+    for (var i=0, imp; (i<l) && (imp=imports[i]); i++) {
+      if (isImportLoaded(imp)) {
+        loadedImport.call(imp, {target: imp});
+      } else {
+        imp.addEventListener('load', loadedImport);
+        imp.addEventListener('error', loadedImport);
+      }
+    }
+  } else {
+    checkDone();
+  }
+}
+
+// NOTE: test for native imports loading is based on explicitly watching
+// all imports (see below).
+// However, we cannot rely on this entirely without watching the entire document
+// for import links. For perf reasons, currently only head is watched.
+// Instead, we fallback to checking if the import property is available
+// and the document is not itself loading.
+function isImportLoaded(link) {
+  return useNative ? link.__loaded ||
+      (link.import && link.import.readyState !== 'loading') :
+      link.__importParsed;
+}
+
+// TODO(sorvell): Workaround for
+// https://www.w3.org/Bugs/Public/show_bug.cgi?id=25007, should be removed when
+// this bug is addressed.
+// (1) Install a mutation observer to see when HTMLImports have loaded
+// (2) if this script is run during document load it will watch any existing
+// imports for loading.
+//
+// NOTE: The workaround has restricted functionality: (1) it's only compatible
+// with imports that are added to document.head since the mutation observer
+// watches only head for perf reasons, (2) it requires this script
+// to run before any imports have completed loading.
+if (useNative) {
+  new MutationObserver(function(mxns) {
+    for (var i=0, l=mxns.length, m; (i < l) && (m=mxns[i]); i++) {
+      if (m.addedNodes) {
+        handleImports(m.addedNodes);
+      }
+    }
+  }).observe(document.head, {childList: true});
+
+  function handleImports(nodes) {
+    for (var i=0, l=nodes.length, n; (i<l) && (n=nodes[i]); i++) {
+      if (isImport(n)) {
+        handleImport(n);
+      }
+    }
+  }
+
+  function isImport(element) {
+    return element.localName === 'link' && element.rel === 'import';
+  }
+
+  function handleImport(element) {
+    var loaded = element.import;
+    if (loaded) {
+      markTargetLoaded({target: element});
+    } else {
+      element.addEventListener('load', markTargetLoaded);
+      element.addEventListener('error', markTargetLoaded);
+    }
+  }
+
+  // make sure to catch any imports that are in the process of loading
+  // when this script is run.
+  (function() {
+    if (document.readyState === 'loading') {
+      var imports = document.querySelectorAll('link[rel=import]');
+      for (var i=0, l=imports.length, imp; (i<l) && (imp=imports[i]); i++) {
+        handleImport(imp);
+      }
+    }
+  })();
+
+}
+
+// Fire the 'HTMLImportsLoaded' event when imports in document at load time
+// have loaded. This event is required to simulate the script blocking
+// behavior of native imports. A main document script that needs to be sure
+// imports have loaded should wait for this event.
+whenReady(function() {
+  HTMLImports.ready = true;
+  HTMLImports.readyTime = new Date().getTime();
+  rootDocument.dispatchEvent(
+    new CustomEvent('HTMLImportsLoaded', {bubbles: true})
+  );
+});
+
+// exports
+scope.IMPORT_LINK_TYPE = IMPORT_LINK_TYPE;
+scope.useNative = useNative;
+scope.rootDocument = rootDocument;
+scope.whenReady = whenReady;
+scope.isIE = isIE;
+
+})(HTMLImports);
+
+(function(scope) {
+
+  // TODO(sorvell): It's desireable to provide a default stylesheet 
+  // that's convenient for styling unresolved elements, but
+  // it's cumbersome to have to include this manually in every page.
+  // It would make sense to put inside some HTMLImport but 
+  // the HTMLImports polyfill does not allow loading of stylesheets 
+  // that block rendering. Therefore this injection is tolerated here.
+  var style = document.createElement('style');
+  style.textContent = ''
+      + 'body {'
+      + 'transition: opacity ease-in 0.2s;' 
+      + ' } \n'
+      + 'body[unresolved] {'
+      + 'opacity: 0; display: block; overflow: hidden;' 
+      + ' } \n'
+      ;
+  var head = document.querySelector('head');
+  head.insertBefore(style, head.firstChild);
+
+})(Platform);
+
+/*
+	Build only script.
+
+  Ensures scripts needed for basic x-platform compatibility
+  will be run when platform.js is not loaded.
+ */
+}
+(function(global) {
+  'use strict';
+
+  var testingExposeCycleCount = global.testingExposeCycleCount;
+
+  // Detect and do basic sanity checking on Object/Array.observe.
+  function detectObjectObserve() {
+    if (typeof Object.observe !== 'function' ||
+        typeof Array.observe !== 'function') {
+      return false;
+    }
+
+    var records = [];
+
+    function callback(recs) {
+      records = recs;
+    }
+
+    var test = {};
+    var arr = [];
+    Object.observe(test, callback);
+    Array.observe(arr, callback);
+    test.id = 1;
+    test.id = 2;
+    delete test.id;
+    arr.push(1, 2);
+    arr.length = 0;
+
+    Object.deliverChangeRecords(callback);
+    if (records.length !== 5)
+      return false;
+
+    if (records[0].type != 'add' ||
+        records[1].type != 'update' ||
+        records[2].type != 'delete' ||
+        records[3].type != 'splice' ||
+        records[4].type != 'splice') {
+      return false;
+    }
+
+    Object.unobserve(test, callback);
+    Array.unobserve(arr, callback);
+
+    return true;
+  }
+
+  var hasObserve = detectObjectObserve();
+
+  function detectEval() {
+    // Don't test for eval if we're running in a Chrome App environment.
+    // We check for APIs set that only exist in a Chrome App context.
+    if (typeof chrome !== 'undefined' && chrome.app && chrome.app.runtime) {
+      return false;
+    }
+
+    // Firefox OS Apps do not allow eval. This feature detection is very hacky
+    // but even if some other platform adds support for this function this code
+    // will continue to work.
+    if (typeof navigator != 'undefined' && navigator.getDeviceStorage) {
+      return false;
+    }
+
+    try {
+      var f = new Function('', 'return true;');
+      return f();
+    } catch (ex) {
+      return false;
+    }
+  }
+
+  var hasEval = detectEval();
+
+  function isIndex(s) {
+    return +s === s >>> 0 && s !== '';
+  }
+
+  function toNumber(s) {
+    return +s;
+  }
+
+  function isObject(obj) {
+    return obj === Object(obj);
+  }
+
+  var numberIsNaN = global.Number.isNaN || function(value) {
+    return typeof value === 'number' && global.isNaN(value);
+  }
+
+  function areSameValue(left, right) {
+    if (left === right)
+      return left !== 0 || 1 / left === 1 / right;
+    if (numberIsNaN(left) && numberIsNaN(right))
+      return true;
+
+    return left !== left && right !== right;
+  }
+
+  var createObject = ('__proto__' in {}) ?
+    function(obj) { return obj; } :
+    function(obj) {
+      var proto = obj.__proto__;
+      if (!proto)
+        return obj;
+      var newObject = Object.create(proto);
+      Object.getOwnPropertyNames(obj).forEach(function(name) {
+        Object.defineProperty(newObject, name,
+                             Object.getOwnPropertyDescriptor(obj, name));
+      });
+      return newObject;
+    };
+
+  var identStart = '[\$_a-zA-Z]';
+  var identPart = '[\$_a-zA-Z0-9]';
+  var identRegExp = new RegExp('^' + identStart + '+' + identPart + '*' + '$');
+
+  function getPathCharType(char) {
+    if (char === undefined)
+      return 'eof';
+
+    var code = char.charCodeAt(0);
+
+    switch(code) {
+      case 0x5B: // [
+      case 0x5D: // ]
+      case 0x2E: // .
+      case 0x22: // "
+      case 0x27: // '
+      case 0x30: // 0
+        return char;
+
+      case 0x5F: // _
+      case 0x24: // $
+        return 'ident';
+
+      case 0x20: // Space
+      case 0x09: // Tab
+      case 0x0A: // Newline
+      case 0x0D: // Return
+      case 0xA0:  // No-break space
+      case 0xFEFF:  // Byte Order Mark
+      case 0x2028:  // Line Separator
+      case 0x2029:  // Paragraph Separator
+        return 'ws';
+    }
+
+    // a-z, A-Z
+    if ((0x61 <= code && code <= 0x7A) || (0x41 <= code && code <= 0x5A))
+      return 'ident';
+
+    // 1-9
+    if (0x31 <= code && code <= 0x39)
+      return 'number';
+
+    return 'else';
+  }
+
+  var pathStateMachine = {
+    'beforePath': {
+      'ws': ['beforePath'],
+      'ident': ['inIdent', 'append'],
+      '[': ['beforeElement'],
+      'eof': ['afterPath']
+    },
+
+    'inPath': {
+      'ws': ['inPath'],
+      '.': ['beforeIdent'],
+      '[': ['beforeElement'],
+      'eof': ['afterPath']
+    },
+
+    'beforeIdent': {
+      'ws': ['beforeIdent'],
+      'ident': ['inIdent', 'append']
+    },
+
+    'inIdent': {
+      'ident': ['inIdent', 'append'],
+      '0': ['inIdent', 'append'],
+      'number': ['inIdent', 'append'],
+      'ws': ['inPath', 'push'],
+      '.': ['beforeIdent', 'push'],
+      '[': ['beforeElement', 'push'],
+      'eof': ['afterPath', 'push']
+    },
+
+    'beforeElement': {
+      'ws': ['beforeElement'],
+      '0': ['afterZero', 'append'],
+      'number': ['inIndex', 'append'],
+      "'": ['inSingleQuote', 'append', ''],
+      '"': ['inDoubleQuote', 'append', '']
+    },
+
+    'afterZero': {
+      'ws': ['afterElement', 'push'],
+      ']': ['inPath', 'push']
+    },
+
+    'inIndex': {
+      '0': ['inIndex', 'append'],
+      'number': ['inIndex', 'append'],
+      'ws': ['afterElement'],
+      ']': ['inPath', 'push']
+    },
+
+    'inSingleQuote': {
+      "'": ['afterElement'],
+      'eof': ['error'],
+      'else': ['inSingleQuote', 'append']
+    },
+
+    'inDoubleQuote': {
+      '"': ['afterElement'],
+      'eof': ['error'],
+      'else': ['inDoubleQuote', 'append']
+    },
+
+    'afterElement': {
+      'ws': ['afterElement'],
+      ']': ['inPath', 'push']
+    }
+  }
+
+  function noop() {}
+
+  function parsePath(path) {
+    var keys = [];
+    var index = -1;
+    var c, newChar, key, type, transition, action, typeMap, mode = 'beforePath';
+
+    var actions = {
+      push: function() {
+        if (key === undefined)
+          return;
+
+        keys.push(key);
+        key = undefined;
+      },
+
+      append: function() {
+        if (key === undefined)
+          key = newChar
+        else
+          key += newChar;
+      }
+    };
+
+    function maybeUnescapeQuote() {
+      if (index >= path.length)
+        return;
+
+      var nextChar = path[index + 1];
+      if ((mode == 'inSingleQuote' && nextChar == "'") ||
+          (mode == 'inDoubleQuote' && nextChar == '"')) {
+        index++;
+        newChar = nextChar;
+        actions.append();
+        return true;
+      }
+    }
+
+    while (mode) {
+      index++;
+      c = path[index];
+
+      if (c == '\\' && maybeUnescapeQuote(mode))
+        continue;
+
+      type = getPathCharType(c);
+      typeMap = pathStateMachine[mode];
+      transition = typeMap[type] || typeMap['else'] || 'error';
+
+      if (transition == 'error')
+        return; // parse error;
+
+      mode = transition[0];
+      action = actions[transition[1]] || noop;
+      newChar = transition[2] === undefined ? c : transition[2];
+      action();
+
+      if (mode === 'afterPath') {
+        return keys;
+      }
+    }
+
+    return; // parse error
+  }
+
+  function isIdent(s) {
+    return identRegExp.test(s);
+  }
+
+  var constructorIsPrivate = {};
+
+  function Path(parts, privateToken) {
+    if (privateToken !== constructorIsPrivate)
+      throw Error('Use Path.get to retrieve path objects');
+
+    for (var i = 0; i < parts.length; i++) {
+      this.push(String(parts[i]));
+    }
+
+    if (hasEval && this.length) {
+      this.getValueFrom = this.compiledGetValueFromFn();
+    }
+  }
+
+  // TODO(rafaelw): Make simple LRU cache
+  var pathCache = {};
+
+  function getPath(pathString) {
+    if (pathString instanceof Path)
+      return pathString;
+
+    if (pathString == null || pathString.length == 0)
+      pathString = '';
+
+    if (typeof pathString != 'string') {
+      if (isIndex(pathString.length)) {
+        // Constructed with array-like (pre-parsed) keys
+        return new Path(pathString, constructorIsPrivate);
+      }
+
+      pathString = String(pathString);
+    }
+
+    var path = pathCache[pathString];
+    if (path)
+      return path;
+
+    var parts = parsePath(pathString);
+    if (!parts)
+      return invalidPath;
+
+    var path = new Path(parts, constructorIsPrivate);
+    pathCache[pathString] = path;
+    return path;
+  }
+
+  Path.get = getPath;
+
+  function formatAccessor(key) {
+    if (isIndex(key)) {
+      return '[' + key + ']';
+    } else {
+      return '["' + key.replace(/"/g, '\\"') + '"]';
+    }
+  }
+
+  Path.prototype = createObject({
+    __proto__: [],
+    valid: true,
+
+    toString: function() {
+      var pathString = '';
+      for (var i = 0; i < this.length; i++) {
+        var key = this[i];
+        if (isIdent(key)) {
+          pathString += i ? '.' + key : key;
+        } else {
+          pathString += formatAccessor(key);
+        }
+      }
+
+      return pathString;
+    },
+
+    getValueFrom: function(obj, directObserver) {
+      for (var i = 0; i < this.length; i++) {
+        if (obj == null)
+          return;
+        obj = obj[this[i]];
+      }
+      return obj;
+    },
+
+    iterateObjects: function(obj, observe) {
+      for (var i = 0; i < this.length; i++) {
+        if (i)
+          obj = obj[this[i - 1]];
+        if (!isObject(obj))
+          return;
+        observe(obj, this[i]);
+      }
+    },
+
+    compiledGetValueFromFn: function() {
+      var str = '';
+      var pathString = 'obj';
+      str += 'if (obj != null';
+      var i = 0;
+      var key;
+      for (; i < (this.length - 1); i++) {
+        key = this[i];
+        pathString += isIdent(key) ? '.' + key : formatAccessor(key);
+        str += ' &&\n     ' + pathString + ' != null';
+      }
+      str += ')\n';
+
+      var key = this[i];
+      pathString += isIdent(key) ? '.' + key : formatAccessor(key);
+
+      str += '  return ' + pathString + ';\nelse\n  return undefined;';
+      return new Function('obj', str);
+    },
+
+    setValueFrom: function(obj, value) {
+      if (!this.length)
+        return false;
+
+      for (var i = 0; i < this.length - 1; i++) {
+        if (!isObject(obj))
+          return false;
+        obj = obj[this[i]];
+      }
+
+      if (!isObject(obj))
+        return false;
+
+      obj[this[i]] = value;
+      return true;
+    }
+  });
+
+  var invalidPath = new Path('', constructorIsPrivate);
+  invalidPath.valid = false;
+  invalidPath.getValueFrom = invalidPath.setValueFrom = function() {};
+
+  var MAX_DIRTY_CHECK_CYCLES = 1000;
+
+  function dirtyCheck(observer) {
+    var cycles = 0;
+    while (cycles < MAX_DIRTY_CHECK_CYCLES && observer.check_()) {
+      cycles++;
+    }
+    if (testingExposeCycleCount)
+      global.dirtyCheckCycleCount = cycles;
+
+    return cycles > 0;
+  }
+
+  function objectIsEmpty(object) {
+    for (var prop in object)
+      return false;
+    return true;
+  }
+
+  function diffIsEmpty(diff) {
+    return objectIsEmpty(diff.added) &&
+           objectIsEmpty(diff.removed) &&
+           objectIsEmpty(diff.changed);
+  }
+
+  function diffObjectFromOldObject(object, oldObject) {
+    var added = {};
+    var removed = {};
+    var changed = {};
+
+    for (var prop in oldObject) {
+      var newValue = object[prop];
+
+      if (newValue !== undefined && newValue === oldObject[prop])
+        continue;
+
+      if (!(prop in object)) {
+        removed[prop] = undefined;
+        continue;
+      }
+
+      if (newValue !== oldObject[prop])
+        changed[prop] = newValue;
+    }
+
+    for (var prop in object) {
+      if (prop in oldObject)
+        continue;
+
+      added[prop] = object[prop];
+    }
+
+    if (Array.isArray(object) && object.length !== oldObject.length)
+      changed.length = object.length;
+
+    return {
+      added: added,
+      removed: removed,
+      changed: changed
+    };
+  }
+
+  var eomTasks = [];
+  function runEOMTasks() {
+    if (!eomTasks.length)
+      return false;
+
+    for (var i = 0; i < eomTasks.length; i++) {
+      eomTasks[i]();
+    }
+    eomTasks.length = 0;
+    return true;
+  }
+
+  var runEOM = hasObserve ? (function(){
+    return function(fn) {
+      return Promise.resolve().then(fn);
+    }
+  })() :
+  (function() {
+    return function(fn) {
+      eomTasks.push(fn);
+    };
+  })();
+
+  var observedObjectCache = [];
+
+  function newObservedObject() {
+    var observer;
+    var object;
+    var discardRecords = false;
+    var first = true;
+
+    function callback(records) {
+      if (observer && observer.state_ === OPENED && !discardRecords)
+        observer.check_(records);
+    }
+
+    return {
+      open: function(obs) {
+        if (observer)
+          throw Error('ObservedObject in use');
+
+        if (!first)
+          Object.deliverChangeRecords(callback);
+
+        observer = obs;
+        first = false;
+      },
+      observe: function(obj, arrayObserve) {
+        object = obj;
+        if (arrayObserve)
+          Array.observe(object, callback);
+        else
+          Object.observe(object, callback);
+      },
+      deliver: function(discard) {
+        discardRecords = discard;
+        Object.deliverChangeRecords(callback);
+        discardRecords = false;
+      },
+      close: function() {
+        observer = undefined;
+        Object.unobserve(object, callback);
+        observedObjectCache.push(this);
+      }
+    };
+  }
+
+  /*
+   * The observedSet abstraction is a perf optimization which reduces the total
+   * number of Object.observe observations of a set of objects. The idea is that
+   * groups of Observers will have some object dependencies in common and this
+   * observed set ensures that each object in the transitive closure of
+   * dependencies is only observed once. The observedSet acts as a write barrier
+   * such that whenever any change comes through, all Observers are checked for
+   * changed values.
+   *
+   * Note that this optimization is explicitly moving work from setup-time to
+   * change-time.
+   *
+   * TODO(rafaelw): Implement "garbage collection". In order to move work off
+   * the critical path, when Observers are closed, their observed objects are
+   * not Object.unobserve(d). As a result, it's possible that if the observedSet
+   * is kept open, but some Observers have been closed, it could cause "leaks"
+   * (prevent otherwise collectable objects from being collected). At some
+   * point, we should implement incremental "gc" which keeps a list of
+   * observedSets which may need clean-up and does small amounts of cleanup on a
+   * timeout until all is clean.
+   */
+
+  function getObservedObject(observer, object, arrayObserve) {
+    var dir = observedObjectCache.pop() || newObservedObject();
+    dir.open(observer);
+    dir.observe(object, arrayObserve);
+    return dir;
+  }
+
+  var observedSetCache = [];
+
+  function newObservedSet() {
+    var observerCount = 0;
+    var observers = [];
+    var objects = [];
+    var rootObj;
+    var rootObjProps;
+
+    function observe(obj, prop) {
+      if (!obj)
+        return;
+
+      if (obj === rootObj)
+        rootObjProps[prop] = true;
+
+      if (objects.indexOf(obj) < 0) {
+        objects.push(obj);
+        Object.observe(obj, callback);
+      }
+
+      observe(Object.getPrototypeOf(obj), prop);
+    }
+
+    function allRootObjNonObservedProps(recs) {
+      for (var i = 0; i < recs.length; i++) {
+        var rec = recs[i];
+        if (rec.object !== rootObj ||
+            rootObjProps[rec.name] ||
+            rec.type === 'setPrototype') {
+          return false;
+        }
+      }
+      return true;
+    }
+
+    function callback(recs) {
+      if (allRootObjNonObservedProps(recs))
+        return;
+
+      var observer;
+      for (var i = 0; i < observers.length; i++) {
+        observer = observers[i];
+        if (observer.state_ == OPENED) {
+          observer.iterateObjects_(observe);
+        }
+      }
+
+      for (var i = 0; i < observers.length; i++) {
+        observer = observers[i];
+        if (observer.state_ == OPENED) {
+          observer.check_();
+        }
+      }
+    }
+
+    var record = {
+      objects: objects,
+      get rootObject() { return rootObj; },
+      set rootObject(value) {
+        rootObj = value;
+        rootObjProps = {};
+      },
+      open: function(obs, object) {
+        observers.push(obs);
+        observerCount++;
+        obs.iterateObjects_(observe);
+      },
+      close: function(obs) {
+        observerCount--;
+        if (observerCount > 0) {
+          return;
+        }
+
+        for (var i = 0; i < objects.length; i++) {
+          Object.unobserve(objects[i], callback);
+          Observer.unobservedCount++;
+        }
+
+        observers.length = 0;
+        objects.length = 0;
+        rootObj = undefined;
+        rootObjProps = undefined;
+        observedSetCache.push(this);
+        if (lastObservedSet === this)
+          lastObservedSet = null;
+      },
+    };
+
+    return record;
+  }
+
+  var lastObservedSet;
+
+  function getObservedSet(observer, obj) {
+    if (!lastObservedSet || lastObservedSet.rootObject !== obj) {
+      lastObservedSet = observedSetCache.pop() || newObservedSet();
+      lastObservedSet.rootObject = obj;
+    }
+    lastObservedSet.open(observer, obj);
+    return lastObservedSet;
+  }
+
+  var UNOPENED = 0;
+  var OPENED = 1;
+  var CLOSED = 2;
+  var RESETTING = 3;
+
+  var nextObserverId = 1;
+
+  function Observer() {
+    this.state_ = UNOPENED;
+    this.callback_ = undefined;
+    this.target_ = undefined; // TODO(rafaelw): Should be WeakRef
+    this.directObserver_ = undefined;
+    this.value_ = undefined;
+    this.id_ = nextObserverId++;
+  }
+
+  Observer.prototype = {
+    open: function(callback, target) {
+      if (this.state_ != UNOPENED)
+        throw Error('Observer has already been opened.');
+
+      addToAll(this);
+      this.callback_ = callback;
+      this.target_ = target;
+      this.connect_();
+      this.state_ = OPENED;
+      return this.value_;
+    },
+
+    close: function() {
+      if (this.state_ != OPENED)
+        return;
+
+      removeFromAll(this);
+      this.disconnect_();
+      this.value_ = undefined;
+      this.callback_ = undefined;
+      this.target_ = undefined;
+      this.state_ = CLOSED;
+    },
+
+    deliver: function() {
+      if (this.state_ != OPENED)
+        return;
+
+      dirtyCheck(this);
+    },
+
+    report_: function(changes) {
+      try {
+        this.callback_.apply(this.target_, changes);
+      } catch (ex) {
+        Observer._errorThrownDuringCallback = true;
+        console.error('Exception caught during observer callback: ' +
+                       (ex.stack || ex));
+      }
+    },
+
+    discardChanges: function() {
+      this.check_(undefined, true);
+      return this.value_;
+    }
+  }
+
+  var collectObservers = !hasObserve;
+  var allObservers;
+  Observer._allObserversCount = 0;
+
+  if (collectObservers) {
+    allObservers = [];
+  }
+
+  function addToAll(observer) {
+    Observer._allObserversCount++;
+    if (!collectObservers)
+      return;
+
+    allObservers.push(observer);
+  }
+
+  function removeFromAll(observer) {
+    Observer._allObserversCount--;
+  }
+
+  var runningMicrotaskCheckpoint = false;
+
+  global.Platform = global.Platform || {};
+
+  global.Platform.performMicrotaskCheckpoint = function() {
+    if (runningMicrotaskCheckpoint)
+      return;
+
+    if (!collectObservers)
+      return;
+
+    runningMicrotaskCheckpoint = true;
+
+    var cycles = 0;
+    var anyChanged, toCheck;
+
+    do {
+      cycles++;
+      toCheck = allObservers;
+      allObservers = [];
+      anyChanged = false;
+
+      for (var i = 0; i < toCheck.length; i++) {
+        var observer = toCheck[i];
+        if (observer.state_ != OPENED)
+          continue;
+
+        if (observer.check_())
+          anyChanged = true;
+
+        allObservers.push(observer);
+      }
+      if (runEOMTasks())
+        anyChanged = true;
+    } while (cycles < MAX_DIRTY_CHECK_CYCLES && anyChanged);
+
+    if (testingExposeCycleCount)
+      global.dirtyCheckCycleCount = cycles;
+
+    runningMicrotaskCheckpoint = false;
+  };
+
+  if (collectObservers) {
+    global.Platform.clearObservers = function() {
+      allObservers = [];
+    };
+  }
+
+  function ObjectObserver(object) {
+    Observer.call(this);
+    this.value_ = object;
+    this.oldObject_ = undefined;
+  }
+
+  ObjectObserver.prototype = createObject({
+    __proto__: Observer.prototype,
+
+    arrayObserve: false,
+
+    connect_: function(callback, target) {
+      if (hasObserve) {
+        this.directObserver_ = getObservedObject(this, this.value_,
+                                                 this.arrayObserve);
+      } else {
+        this.oldObject_ = this.copyObject(this.value_);
+      }
+
+    },
+
+    copyObject: function(object) {
+      var copy = Array.isArray(object) ? [] : {};
+      for (var prop in object) {
+        copy[prop] = object[prop];
+      };
+      if (Array.isArray(object))
+        copy.length = object.length;
+      return copy;
+    },
+
+    check_: function(changeRecords, skipChanges) {
+      var diff;
+      var oldValues;
+      if (hasObserve) {
+        if (!changeRecords)
+          return false;
+
+        oldValues = {};
+        diff = diffObjectFromChangeRecords(this.value_, changeRecords,
+                                           oldValues);
+      } else {
+        oldValues = this.oldObject_;
+        diff = diffObjectFromOldObject(this.value_, this.oldObject_);
+      }
+
+      if (diffIsEmpty(diff))
+        return false;
+
+      if (!hasObserve)
+        this.oldObject_ = this.copyObject(this.value_);
+
+      this.report_([
+        diff.added || {},
+        diff.removed || {},
+        diff.changed || {},
+        function(property) {
+          return oldValues[property];
+        }
+      ]);
+
+      return true;
+    },
+
+    disconnect_: function() {
+      if (hasObserve) {
+        this.directObserver_.close();
+        this.directObserver_ = undefined;
+      } else {
+        this.oldObject_ = undefined;
+      }
+    },
+
+    deliver: function() {
+      if (this.state_ != OPENED)
+        return;
+
+      if (hasObserve)
+        this.directObserver_.deliver(false);
+      else
+        dirtyCheck(this);
+    },
+
+    discardChanges: function() {
+      if (this.directObserver_)
+        this.directObserver_.deliver(true);
+      else
+        this.oldObject_ = this.copyObject(this.value_);
+
+      return this.value_;
+    }
+  });
+
+  function ArrayObserver(array) {
+    if (!Array.isArray(array))
+      throw Error('Provided object is not an Array');
+    ObjectObserver.call(this, array);
+  }
+
+  ArrayObserver.prototype = createObject({
+
+    __proto__: ObjectObserver.prototype,
+
+    arrayObserve: true,
+
+    copyObject: function(arr) {
+      return arr.slice();
+    },
+
+    check_: function(changeRecords) {
+      var splices;
+      if (hasObserve) {
+        if (!changeRecords)
+          return false;
+        splices = projectArraySplices(this.value_, changeRecords);
+      } else {
+        splices = calcSplices(this.value_, 0, this.value_.length,
+                              this.oldObject_, 0, this.oldObject_.length);
+      }
+
+      if (!splices || !splices.length)
+        return false;
+
+      if (!hasObserve)
+        this.oldObject_ = this.copyObject(this.value_);
+
+      this.report_([splices]);
+      return true;
+    }
+  });
+
+  ArrayObserver.applySplices = function(previous, current, splices) {
+    splices.forEach(function(splice) {
+      var spliceArgs = [splice.index, splice.removed.length];
+      var addIndex = splice.index;
+      while (addIndex < splice.index + splice.addedCount) {
+        spliceArgs.push(current[addIndex]);
+        addIndex++;
+      }
+
+      Array.prototype.splice.apply(previous, spliceArgs);
+    });
+  };
+
+  function PathObserver(object, path) {
+    Observer.call(this);
+
+    this.object_ = object;
+    this.path_ = getPath(path);
+    this.directObserver_ = undefined;
+  }
+
+  PathObserver.prototype = createObject({
+    __proto__: Observer.prototype,
+
+    get path() {
+      return this.path_;
+    },
+
+    connect_: function() {
+      if (hasObserve)
+        this.directObserver_ = getObservedSet(this, this.object_);
+
+      this.check_(undefined, true);
+    },
+
+    disconnect_: function() {
+      this.value_ = undefined;
+
+      if (this.directObserver_) {
+        this.directObserver_.close(this);
+        this.directObserver_ = undefined;
+      }
+    },
+
+    iterateObjects_: function(observe) {
+      this.path_.iterateObjects(this.object_, observe);
+    },
+
+    check_: function(changeRecords, skipChanges) {
+      var oldValue = this.value_;
+      this.value_ = this.path_.getValueFrom(this.object_);
+      if (skipChanges || areSameValue(this.value_, oldValue))
+        return false;
+
+      this.report_([this.value_, oldValue, this]);
+      return true;
+    },
+
+    setValue: function(newValue) {
+      if (this.path_)
+        this.path_.setValueFrom(this.object_, newValue);
+    }
+  });
+
+  function CompoundObserver(reportChangesOnOpen) {
+    Observer.call(this);
+
+    this.reportChangesOnOpen_ = reportChangesOnOpen;
+    this.value_ = [];
+    this.directObserver_ = undefined;
+    this.observed_ = [];
+  }
+
+  var observerSentinel = {};
+
+  CompoundObserver.prototype = createObject({
+    __proto__: Observer.prototype,
+
+    connect_: function() {
+      if (hasObserve) {
+        var object;
+        var needsDirectObserver = false;
+        for (var i = 0; i < this.observed_.length; i += 2) {
+          object = this.observed_[i]
+          if (object !== observerSentinel) {
+            needsDirectObserver = true;
+            break;
+          }
+        }
+
+        if (needsDirectObserver)
+          this.directObserver_ = getObservedSet(this, object);
+      }
+
+      this.check_(undefined, !this.reportChangesOnOpen_);
+    },
+
+    disconnect_: function() {
+      for (var i = 0; i < this.observed_.length; i += 2) {
+        if (this.observed_[i] === observerSentinel)
+          this.observed_[i + 1].close();
+      }
+      this.observed_.length = 0;
+      this.value_.length = 0;
+
+      if (this.directObserver_) {
+        this.directObserver_.close(this);
+        this.directObserver_ = undefined;
+      }
+    },
+
+    addPath: function(object, path) {
+      if (this.state_ != UNOPENED && this.state_ != RESETTING)
+        throw Error('Cannot add paths once started.');
+
+      var path = getPath(path);
+      this.observed_.push(object, path);
+      if (!this.reportChangesOnOpen_)
+        return;
+      var index = this.observed_.length / 2 - 1;
+      this.value_[index] = path.getValueFrom(object);
+    },
+
+    addObserver: function(observer) {
+      if (this.state_ != UNOPENED && this.state_ != RESETTING)
+        throw Error('Cannot add observers once started.');
+
+      this.observed_.push(observerSentinel, observer);
+      if (!this.reportChangesOnOpen_)
+        return;
+      var index = this.observed_.length / 2 - 1;
+      this.value_[index] = observer.open(this.deliver, this);
+    },
+
+    startReset: function() {
+      if (this.state_ != OPENED)
+        throw Error('Can only reset while open');
+
+      this.state_ = RESETTING;
+      this.disconnect_();
+    },
+
+    finishReset: function() {
+      if (this.state_ != RESETTING)
+        throw Error('Can only finishReset after startReset');
+      this.state_ = OPENED;
+      this.connect_();
+
+      return this.value_;
+    },
+
+    iterateObjects_: function(observe) {
+      var object;
+      for (var i = 0; i < this.observed_.length; i += 2) {
+        object = this.observed_[i]
+        if (object !== observerSentinel)
+          this.observed_[i + 1].iterateObjects(object, observe)
+      }
+    },
+
+    check_: function(changeRecords, skipChanges) {
+      var oldValues;
+      for (var i = 0; i < this.observed_.length; i += 2) {
+        var object = this.observed_[i];
+        var path = this.observed_[i+1];
+        var value;
+        if (object === observerSentinel) {
+          var observable = path;
+          value = this.state_ === UNOPENED ?
+              observable.open(this.deliver, this) :
+              observable.discardChanges();
+        } else {
+          value = path.getValueFrom(object);
+        }
+
+        if (skipChanges) {
+          this.value_[i / 2] = value;
+          continue;
+        }
+
+        if (areSameValue(value, this.value_[i / 2]))
+          continue;
+
+        oldValues = oldValues || [];
+        oldValues[i / 2] = this.value_[i / 2];
+        this.value_[i / 2] = value;
+      }
+
+      if (!oldValues)
+        return false;
+
+      // TODO(rafaelw): Having observed_ as the third callback arg here is
+      // pretty lame API. Fix.
+      this.report_([this.value_, oldValues, this.observed_]);
+      return true;
+    }
+  });
+
+  function identFn(value) { return value; }
+
+  function ObserverTransform(observable, getValueFn, setValueFn,
+                             dontPassThroughSet) {
+    this.callback_ = undefined;
+    this.target_ = undefined;
+    this.value_ = undefined;
+    this.observable_ = observable;
+    this.getValueFn_ = getValueFn || identFn;
+    this.setValueFn_ = setValueFn || identFn;
+    // TODO(rafaelw): This is a temporary hack. PolymerExpressions needs this
+    // at the moment because of a bug in it's dependency tracking.
+    this.dontPassThroughSet_ = dontPassThroughSet;
+  }
+
+  ObserverTransform.prototype = {
+    open: function(callback, target) {
+      this.callback_ = callback;
+      this.target_ = target;
+      this.value_ =
+          this.getValueFn_(this.observable_.open(this.observedCallback_, this));
+      return this.value_;
+    },
+
+    observedCallback_: function(value) {
+      value = this.getValueFn_(value);
+      if (areSameValue(value, this.value_))
+        return;
+      var oldValue = this.value_;
+      this.value_ = value;
+      this.callback_.call(this.target_, this.value_, oldValue);
+    },
+
+    discardChanges: function() {
+      this.value_ = this.getValueFn_(this.observable_.discardChanges());
+      return this.value_;
+    },
+
+    deliver: function() {
+      return this.observable_.deliver();
+    },
+
+    setValue: function(value) {
+      value = this.setValueFn_(value);
+      if (!this.dontPassThroughSet_ && this.observable_.setValue)
+        return this.observable_.setValue(value);
+    },
+
+    close: function() {
+      if (this.observable_)
+        this.observable_.close();
+      this.callback_ = undefined;
+      this.target_ = undefined;
+      this.observable_ = undefined;
+      this.value_ = undefined;
+      this.getValueFn_ = undefined;
+      this.setValueFn_ = undefined;
+    }
+  }
+
+  var expectedRecordTypes = {
+    add: true,
+    update: true,
+    delete: true
+  };
+
+  function diffObjectFromChangeRecords(object, changeRecords, oldValues) {
+    var added = {};
+    var removed = {};
+
+    for (var i = 0; i < changeRecords.length; i++) {
+      var record = changeRecords[i];
+      if (!expectedRecordTypes[record.type]) {
+        console.error('Unknown changeRecord type: ' + record.type);
+        console.error(record);
+        continue;
+      }
+
+      if (!(record.name in oldValues))
+        oldValues[record.name] = record.oldValue;
+
+      if (record.type == 'update')
+        continue;
+
+      if (record.type == 'add') {
+        if (record.name in removed)
+          delete removed[record.name];
+        else
+          added[record.name] = true;
+
+        continue;
+      }
+
+      // type = 'delete'
+      if (record.name in added) {
+        delete added[record.name];
+        delete oldValues[record.name];
+      } else {
+        removed[record.name] = true;
+      }
+    }
+
+    for (var prop in added)
+      added[prop] = object[prop];
+
+    for (var prop in removed)
+      removed[prop] = undefined;
+
+    var changed = {};
+    for (var prop in oldValues) {
+      if (prop in added || prop in removed)
+        continue;
+
+      var newValue = object[prop];
+      if (oldValues[prop] !== newValue)
+        changed[prop] = newValue;
+    }
+
+    return {
+      added: added,
+      removed: removed,
+      changed: changed
+    };
+  }
+
+  function newSplice(index, removed, addedCount) {
+    return {
+      index: index,
+      removed: removed,
+      addedCount: addedCount
+    };
+  }
+
+  var EDIT_LEAVE = 0;
+  var EDIT_UPDATE = 1;
+  var EDIT_ADD = 2;
+  var EDIT_DELETE = 3;
+
+  function ArraySplice() {}
+
+  ArraySplice.prototype = {
+
+    // Note: This function is *based* on the computation of the Levenshtein
+    // "edit" distance. The one change is that "updates" are treated as two
+    // edits - not one. With Array splices, an update is really a delete
+    // followed by an add. By retaining this, we optimize for "keeping" the
+    // maximum array items in the original array. For example:
+    //
+    //   'xxxx123' -> '123yyyy'
+    //
+    // With 1-edit updates, the shortest path would be just to update all seven
+    // characters. With 2-edit updates, we delete 4, leave 3, and add 4. This
+    // leaves the substring '123' intact.
+    calcEditDistances: function(current, currentStart, currentEnd,
+                                old, oldStart, oldEnd) {
+      // "Deletion" columns
+      var rowCount = oldEnd - oldStart + 1;
+      var columnCount = currentEnd - currentStart + 1;
+      var distances = new Array(rowCount);
+
+      // "Addition" rows. Initialize null column.
+      for (var i = 0; i < rowCount; i++) {
+        distances[i] = new Array(columnCount);
+        distances[i][0] = i;
+      }
+
+      // Initialize null row
+      for (var j = 0; j < columnCount; j++)
+        distances[0][j] = j;
+
+      for (var i = 1; i < rowCount; i++) {
+        for (var j = 1; j < columnCount; j++) {
+          if (this.equals(current[currentStart + j - 1], old[oldStart + i - 1]))
+            distances[i][j] = distances[i - 1][j - 1];
+          else {
+            var north = distances[i - 1][j] + 1;
+            var west = distances[i][j - 1] + 1;
+            distances[i][j] = north < west ? north : west;
+          }
+        }
+      }
+
+      return distances;
+    },
+
+    // This starts at the final weight, and walks "backward" by finding
+    // the minimum previous weight recursively until the origin of the weight
+    // matrix.
+    spliceOperationsFromEditDistances: function(distances) {
+      var i = distances.length - 1;
+      var j = distances[0].length - 1;
+      var current = distances[i][j];
+      var edits = [];
+      while (i > 0 || j > 0) {
+        if (i == 0) {
+          edits.push(EDIT_ADD);
+          j--;
+          continue;
+        }
+        if (j == 0) {
+          edits.push(EDIT_DELETE);
+          i--;
+          continue;
+        }
+        var northWest = distances[i - 1][j - 1];
+        var west = distances[i - 1][j];
+        var north = distances[i][j - 1];
+
+        var min;
+        if (west < north)
+          min = west < northWest ? west : northWest;
+        else
+          min = north < northWest ? north : northWest;
+
+        if (min == northWest) {
+          if (northWest == current) {
+            edits.push(EDIT_LEAVE);
+          } else {
+            edits.push(EDIT_UPDATE);
+            current = northWest;
+          }
+          i--;
+          j--;
+        } else if (min == west) {
+          edits.push(EDIT_DELETE);
+          i--;
+          current = west;
+        } else {
+          edits.push(EDIT_ADD);
+          j--;
+          current = north;
+        }
+      }
+
+      edits.reverse();
+      return edits;
+    },
+
+    /**
+     * Splice Projection functions:
+     *
+     * A splice map is a representation of how a previous array of items
+     * was transformed into a new array of items. Conceptually it is a list of
+     * tuples of
+     *
+     *   <index, removed, addedCount>
+     *
+     * which are kept in ascending index order of. The tuple represents that at
+     * the |index|, |removed| sequence of items were removed, and counting forward
+     * from |index|, |addedCount| items were added.
+     */
+
+    /**
+     * Lacking individual splice mutation information, the minimal set of
+     * splices can be synthesized given the previous state and final state of an
+     * array. The basic approach is to calculate the edit distance matrix and
+     * choose the shortest path through it.
+     *
+     * Complexity: O(l * p)
+     *   l: The length of the current array
+     *   p: The length of the old array
+     */
+    calcSplices: function(current, currentStart, currentEnd,
+                          old, oldStart, oldEnd) {
+      var prefixCount = 0;
+      var suffixCount = 0;
+
+      var minLength = Math.min(currentEnd - currentStart, oldEnd - oldStart);
+      if (currentStart == 0 && oldStart == 0)
+        prefixCount = this.sharedPrefix(current, old, minLength);
+
+      if (currentEnd == current.length && oldEnd == old.length)
+        suffixCount = this.sharedSuffix(current, old, minLength - prefixCount);
+
+      currentStart += prefixCount;
+      oldStart += prefixCount;
+      currentEnd -= suffixCount;
+      oldEnd -= suffixCount;
+
+      if (currentEnd - currentStart == 0 && oldEnd - oldStart == 0)
+        return [];
+
+      if (currentStart == currentEnd) {
+        var splice = newSplice(currentStart, [], 0);
+        while (oldStart < oldEnd)
+          splice.removed.push(old[oldStart++]);
+
+        return [ splice ];
+      } else if (oldStart == oldEnd)
+        return [ newSplice(currentStart, [], currentEnd - currentStart) ];
+
+      var ops = this.spliceOperationsFromEditDistances(
+          this.calcEditDistances(current, currentStart, currentEnd,
+                                 old, oldStart, oldEnd));
+
+      var splice = undefined;
+      var splices = [];
+      var index = currentStart;
+      var oldIndex = oldStart;
+      for (var i = 0; i < ops.length; i++) {
+        switch(ops[i]) {
+          case EDIT_LEAVE:
+            if (splice) {
+              splices.push(splice);
+              splice = undefined;
+            }
+
+            index++;
+            oldIndex++;
+            break;
+          case EDIT_UPDATE:
+            if (!splice)
+              splice = newSplice(index, [], 0);
+
+            splice.addedCount++;
+            index++;
+
+            splice.removed.push(old[oldIndex]);
+            oldIndex++;
+            break;
+          case EDIT_ADD:
+            if (!splice)
+              splice = newSplice(index, [], 0);
+
+            splice.addedCount++;
+            index++;
+            break;
+          case EDIT_DELETE:
+            if (!splice)
+              splice = newSplice(index, [], 0);
+
+            splice.removed.push(old[oldIndex]);
+            oldIndex++;
+            break;
+        }
+      }
+
+      if (splice) {
+        splices.push(splice);
+      }
+      return splices;
+    },
+
+    sharedPrefix: function(current, old, searchLength) {
+      for (var i = 0; i < searchLength; i++)
+        if (!this.equals(current[i], old[i]))
+          return i;
+      return searchLength;
+    },
+
+    sharedSuffix: function(current, old, searchLength) {
+      var index1 = current.length;
+      var index2 = old.length;
+      var count = 0;
+      while (count < searchLength && this.equals(current[--index1], old[--index2]))
+        count++;
+
+      return count;
+    },
+
+    calculateSplices: function(current, previous) {
+      return this.calcSplices(current, 0, current.length, previous, 0,
+                              previous.length);
+    },
+
+    equals: function(currentValue, previousValue) {
+      return currentValue === previousValue;
+    }
+  };
+
+  var arraySplice = new ArraySplice();
+
+  function calcSplices(current, currentStart, currentEnd,
+                       old, oldStart, oldEnd) {
+    return arraySplice.calcSplices(current, currentStart, currentEnd,
+                                   old, oldStart, oldEnd);
+  }
+
+  function intersect(start1, end1, start2, end2) {
+    // Disjoint
+    if (end1 < start2 || end2 < start1)
+      return -1;
+
+    // Adjacent
+    if (end1 == start2 || end2 == start1)
+      return 0;
+
+    // Non-zero intersect, span1 first
+    if (start1 < start2) {
+      if (end1 < end2)
+        return end1 - start2; // Overlap
+      else
+        return end2 - start2; // Contained
+    } else {
+      // Non-zero intersect, span2 first
+      if (end2 < end1)
+        return end2 - start1; // Overlap
+      else
+        return end1 - start1; // Contained
+    }
+  }
+
+  function mergeSplice(splices, index, removed, addedCount) {
+
+    var splice = newSplice(index, removed, addedCount);
+
+    var inserted = false;
+    var insertionOffset = 0;
+
+    for (var i = 0; i < splices.length; i++) {
+      var current = splices[i];
+      current.index += insertionOffset;
+
+      if (inserted)
+        continue;
+
+      var intersectCount = intersect(splice.index,
+                                     splice.index + splice.removed.length,
+                                     current.index,
+                                     current.index + current.addedCount);
+
+      if (intersectCount >= 0) {
+        // Merge the two splices
+
+        splices.splice(i, 1);
+        i--;
+
+        insertionOffset -= current.addedCount - current.removed.length;
+
+        splice.addedCount += current.addedCount - intersectCount;
+        var deleteCount = splice.removed.length +
+                          current.removed.length - intersectCount;
+
+        if (!splice.addedCount && !deleteCount) {
+          // merged splice is a noop. discard.
+          inserted = true;
+        } else {
+          var removed = current.removed;
+
+          if (splice.index < current.index) {
+            // some prefix of splice.removed is prepended to current.removed.
+            var prepend = splice.removed.slice(0, current.index - splice.index);
+            Array.prototype.push.apply(prepend, removed);
+            removed = prepend;
+          }
+
+          if (splice.index + splice.removed.length > current.index + current.addedCount) {
+            // some suffix of splice.removed is appended to current.removed.
+            var append = splice.removed.slice(current.index + current.addedCount - splice.index);
+            Array.prototype.push.apply(removed, append);
+          }
+
+          splice.removed = removed;
+          if (current.index < splice.index) {
+            splice.index = current.index;
+          }
+        }
+      } else if (splice.index < current.index) {
+        // Insert splice here.
+
+        inserted = true;
+
+        splices.splice(i, 0, splice);
+        i++;
+
+        var offset = splice.addedCount - splice.removed.length
+        current.index += offset;
+        insertionOffset += offset;
+      }
+    }
+
+    if (!inserted)
+      splices.push(splice);
+  }
+
+  function createInitialSplices(array, changeRecords) {
+    var splices = [];
+
+    for (var i = 0; i < changeRecords.length; i++) {
+      var record = changeRecords[i];
+      switch(record.type) {
+        case 'splice':
+          mergeSplice(splices, record.index, record.removed.slice(), record.addedCount);
+          break;
+        case 'add':
+        case 'update':
+        case 'delete':
+          if (!isIndex(record.name))
+            continue;
+          var index = toNumber(record.name);
+          if (index < 0)
+            continue;
+          mergeSplice(splices, index, [record.oldValue], 1);
+          break;
+        default:
+          console.error('Unexpected record type: ' + JSON.stringify(record));
+          break;
+      }
+    }
+
+    return splices;
+  }
+
+  function projectArraySplices(array, changeRecords) {
+    var splices = [];
+
+    createInitialSplices(array, changeRecords).forEach(function(splice) {
+      if (splice.addedCount == 1 && splice.removed.length == 1) {
+        if (splice.removed[0] !== array[splice.index])
+          splices.push(splice);
+
+        return
+      };
+
+      splices = splices.concat(calcSplices(array, splice.index, splice.index + splice.addedCount,
+                                           splice.removed, 0, splice.removed.length));
+    });
+
+    return splices;
+  }
+
+  // Export the observe-js object for **Node.js**, with
+  // backwards-compatibility for the old `require()` API. If we're in
+  // the browser, export as a global object.
+
+  var expose = global;
+
+  if (typeof exports !== 'undefined') {
+    if (typeof module !== 'undefined' && module.exports) {
+      expose = exports = module.exports;
+    }
+    expose = exports;
+  } 
+
+  expose.Observer = Observer;
+  expose.Observer.runEOM_ = runEOM;
+  expose.Observer.observerSentinel_ = observerSentinel; // for testing.
+  expose.Observer.hasObjectObserve = hasObserve;
+  expose.ArrayObserver = ArrayObserver;
+  expose.ArrayObserver.calculateSplices = function(current, previous) {
+    return arraySplice.calculateSplices(current, previous);
+  };
+
+  expose.ArraySplice = ArraySplice;
+  expose.ObjectObserver = ObjectObserver;
+  expose.PathObserver = PathObserver;
+  expose.CompoundObserver = CompoundObserver;
+  expose.Path = Path;
+  expose.ObserverTransform = ObserverTransform;
+  
+})(typeof global !== 'undefined' && global && typeof module !== 'undefined' && module ? global : this || window);
+
+// Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+// This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+// The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+// The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+// Code distributed by Google as part of the polymer project is also
+// subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+
+(function(global) {
+  'use strict';
+
+  var filter = Array.prototype.filter.call.bind(Array.prototype.filter);
+
+  function getTreeScope(node) {
+    while (node.parentNode) {
+      node = node.parentNode;
+    }
+
+    return typeof node.getElementById === 'function' ? node : null;
+  }
+
+  Node.prototype.bind = function(name, observable) {
+    console.error('Unhandled binding to Node: ', this, name, observable);
+  };
+
+  Node.prototype.bindFinished = function() {};
+
+  function updateBindings(node, name, binding) {
+    var bindings = node.bindings_;
+    if (!bindings)
+      bindings = node.bindings_ = {};
+
+    if (bindings[name])
+      binding[name].close();
+
+    return bindings[name] = binding;
+  }
+
+  function returnBinding(node, name, binding) {
+    return binding;
+  }
+
+  function sanitizeValue(value) {
+    return value == null ? '' : value;
+  }
+
+  function updateText(node, value) {
+    node.data = sanitizeValue(value);
+  }
+
+  function textBinding(node) {
+    return function(value) {
+      return updateText(node, value);
+    };
+  }
+
+  var maybeUpdateBindings = returnBinding;
+
+  Object.defineProperty(Platform, 'enableBindingsReflection', {
+    get: function() {
+      return maybeUpdateBindings === updateBindings;
+    },
+    set: function(enable) {
+      maybeUpdateBindings = enable ? updateBindings : returnBinding;
+      return enable;
+    },
+    configurable: true
+  });
+
+  Text.prototype.bind = function(name, value, oneTime) {
+    if (name !== 'textContent')
+      return Node.prototype.bind.call(this, name, value, oneTime);
+
+    if (oneTime)
+      return updateText(this, value);
+
+    var observable = value;
+    updateText(this, observable.open(textBinding(this)));
+    return maybeUpdateBindings(this, name, observable);
+  }
+
+  function updateAttribute(el, name, conditional, value) {
+    if (conditional) {
+      if (value)
+        el.setAttribute(name, '');
+      else
+        el.removeAttribute(name);
+      return;
+    }
+
+    el.setAttribute(name, sanitizeValue(value));
+  }
+
+  function attributeBinding(el, name, conditional) {
+    return function(value) {
+      updateAttribute(el, name, conditional, value);
+    };
+  }
+
+  Element.prototype.bind = function(name, value, oneTime) {
+    var conditional = name[name.length - 1] == '?';
+    if (conditional) {
+      this.removeAttribute(name);
+      name = name.slice(0, -1);
+    }
+
+    if (oneTime)
+      return updateAttribute(this, name, conditional, value);
+
+
+    var observable = value;
+    updateAttribute(this, name, conditional,
+        observable.open(attributeBinding(this, name, conditional)));
+
+    return maybeUpdateBindings(this, name, observable);
+  };
+
+  var checkboxEventType;
+  (function() {
+    // Attempt to feature-detect which event (change or click) is fired first
+    // for checkboxes.
+    var div = document.createElement('div');
+    var checkbox = div.appendChild(document.createElement('input'));
+    checkbox.setAttribute('type', 'checkbox');
+    var first;
+    var count = 0;
+    checkbox.addEventListener('click', function(e) {
+      count++;
+      first = first || 'click';
+    });
+    checkbox.addEventListener('change', function() {
+      count++;
+      first = first || 'change';
+    });
+
+    var event = document.createEvent('MouseEvent');
+    event.initMouseEvent("click", true, true, window, 0, 0, 0, 0, 0, false,
+        false, false, false, 0, null);
+    checkbox.dispatchEvent(event);
+    // WebKit/Blink don't fire the change event if the element is outside the
+    // document, so assume 'change' for that case.
+    checkboxEventType = count == 1 ? 'change' : first;
+  })();
+
+  function getEventForInputType(element) {
+    switch (element.type) {
+      case 'checkbox':
+        return checkboxEventType;
+      case 'radio':
+      case 'select-multiple':
+      case 'select-one':
+        return 'change';
+      case 'range':
+        if (/Trident|MSIE/.test(navigator.userAgent))
+          return 'change';
+      default:
+        return 'input';
+    }
+  }
+
+  function updateInput(input, property, value, santizeFn) {
+    input[property] = (santizeFn || sanitizeValue)(value);
+  }
+
+  function inputBinding(input, property, santizeFn) {
+    return function(value) {
+      return updateInput(input, property, value, santizeFn);
+    }
+  }
+
+  function noop() {}
+
+  function bindInputEvent(input, property, observable, postEventFn) {
+    var eventType = getEventForInputType(input);
+
+    function eventHandler() {
+      observable.setValue(input[property]);
+      observable.discardChanges();
+      (postEventFn || noop)(input);
+      Platform.performMicrotaskCheckpoint();
+    }
+    input.addEventListener(eventType, eventHandler);
+
+    return {
+      close: function() {
+        input.removeEventListener(eventType, eventHandler);
+        observable.close();
+      },
+
+      observable_: observable
+    }
+  }
+
+  function booleanSanitize(value) {
+    return Boolean(value);
+  }
+
+  // |element| is assumed to be an HTMLInputElement with |type| == 'radio'.
+  // Returns an array containing all radio buttons other than |element| that
+  // have the same |name|, either in the form that |element| belongs to or,
+  // if no form, in the document tree to which |element| belongs.
+  //
+  // This implementation is based upon the HTML spec definition of a
+  // "radio button group":
+  //   http://www.whatwg.org/specs/web-apps/current-work/multipage/number-state.html#radio-button-group
+  //
+  function getAssociatedRadioButtons(element) {
+    if (element.form) {
+      return filter(element.form.elements, function(el) {
+        return el != element &&
+            el.tagName == 'INPUT' &&
+            el.type == 'radio' &&
+            el.name == element.name;
+      });
+    } else {
+      var treeScope = getTreeScope(element);
+      if (!treeScope)
+        return [];
+      var radios = treeScope.querySelectorAll(
+          'input[type="radio"][name="' + element.name + '"]');
+      return filter(radios, function(el) {
+        return el != element && !el.form;
+      });
+    }
+  }
+
+  function checkedPostEvent(input) {
+    // Only the radio button that is getting checked gets an event. We
+    // therefore find all the associated radio buttons and update their
+    // check binding manually.
+    if (input.tagName === 'INPUT' &&
+        input.type === 'radio') {
+      getAssociatedRadioButtons(input).forEach(function(radio) {
+        var checkedBinding = radio.bindings_.checked;
+        if (checkedBinding) {
+          // Set the value directly to avoid an infinite call stack.
+          checkedBinding.observable_.setValue(false);
+        }
+      });
+    }
+  }
+
+  HTMLInputElement.prototype.bind = function(name, value, oneTime) {
+    if (name !== 'value' && name !== 'checked')
+      return HTMLElement.prototype.bind.call(this, name, value, oneTime);
+
+    this.removeAttribute(name);
+    var sanitizeFn = name == 'checked' ? booleanSanitize : sanitizeValue;
+    var postEventFn = name == 'checked' ? checkedPostEvent : noop;
+
+    if (oneTime)
+      return updateInput(this, name, value, sanitizeFn);
+
+
+    var observable = value;
+    var binding = bindInputEvent(this, name, observable, postEventFn);
+    updateInput(this, name,
+                observable.open(inputBinding(this, name, sanitizeFn)),
+                sanitizeFn);
+
+    // Checkboxes may need to update bindings of other checkboxes.
+    return updateBindings(this, name, binding);
+  }
+
+  HTMLTextAreaElement.prototype.bind = function(name, value, oneTime) {
+    if (name !== 'value')
+      return HTMLElement.prototype.bind.call(this, name, value, oneTime);
+
+    this.removeAttribute('value');
+
+    if (oneTime)
+      return updateInput(this, 'value', value);
+
+    var observable = value;
+    var binding = bindInputEvent(this, 'value', observable);
+    updateInput(this, 'value',
+                observable.open(inputBinding(this, 'value', sanitizeValue)));
+    return maybeUpdateBindings(this, name, binding);
+  }
+
+  function updateOption(option, value) {
+    var parentNode = option.parentNode;;
+    var select;
+    var selectBinding;
+    var oldValue;
+    if (parentNode instanceof HTMLSelectElement &&
+        parentNode.bindings_ &&
+        parentNode.bindings_.value) {
+      select = parentNode;
+      selectBinding = select.bindings_.value;
+      oldValue = select.value;
+    }
+
+    option.value = sanitizeValue(value);
+
+    if (select && select.value != oldValue) {
+      selectBinding.observable_.setValue(select.value);
+      selectBinding.observable_.discardChanges();
+      Platform.performMicrotaskCheckpoint();
+    }
+  }
+
+  function optionBinding(option) {
+    return function(value) {
+      updateOption(option, value);
+    }
+  }
+
+  HTMLOptionElement.prototype.bind = function(name, value, oneTime) {
+    if (name !== 'value')
+      return HTMLElement.prototype.bind.call(this, name, value, oneTime);
+
+    this.removeAttribute('value');
+
+    if (oneTime)
+      return updateOption(this, value);
+
+    var observable = value;
+    var binding = bindInputEvent(this, 'value', observable);
+    updateOption(this, observable.open(optionBinding(this)));
+    return maybeUpdateBindings(this, name, binding);
+  }
+
+  HTMLSelectElement.prototype.bind = function(name, value, oneTime) {
+    if (name === 'selectedindex')
+      name = 'selectedIndex';
+
+    if (name !== 'selectedIndex' && name !== 'value')
+      return HTMLElement.prototype.bind.call(this, name, value, oneTime);
+
+    this.removeAttribute(name);
+
+    if (oneTime)
+      return updateInput(this, name, value);
+
+    var observable = value;
+    var binding = bindInputEvent(this, name, observable);
+    updateInput(this, name,
+                observable.open(inputBinding(this, name)));
+
+    // Option update events may need to access select bindings.
+    return updateBindings(this, name, binding);
+  }
+})(this);
+
+// Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+// This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+// The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+// The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+// Code distributed by Google as part of the polymer project is also
+// subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+
+(function(global) {
+  'use strict';
+
+  function assert(v) {
+    if (!v)
+      throw new Error('Assertion failed');
+  }
+
+  var forEach = Array.prototype.forEach.call.bind(Array.prototype.forEach);
+
+  function getFragmentRoot(node) {
+    var p;
+    while (p = node.parentNode) {
+      node = p;
+    }
+
+    return node;
+  }
+
+  function searchRefId(node, id) {
+    if (!id)
+      return;
+
+    var ref;
+    var selector = '#' + id;
+    while (!ref) {
+      node = getFragmentRoot(node);
+
+      if (node.protoContent_)
+        ref = node.protoContent_.querySelector(selector);
+      else if (node.getElementById)
+        ref = node.getElementById(id);
+
+      if (ref || !node.templateCreator_)
+        break
+
+      node = node.templateCreator_;
+    }
+
+    return ref;
+  }
+
+  function getInstanceRoot(node) {
+    while (node.parentNode) {
+      node = node.parentNode;
+    }
+    return node.templateCreator_ ? node : null;
+  }
+
+  var Map;
+  if (global.Map && typeof global.Map.prototype.forEach === 'function') {
+    Map = global.Map;
+  } else {
+    Map = function() {
+      this.keys = [];
+      this.values = [];
+    };
+
+    Map.prototype = {
+      set: function(key, value) {
+        var index = this.keys.indexOf(key);
+        if (index < 0) {
+          this.keys.push(key);
+          this.values.push(value);
+        } else {
+          this.values[index] = value;
+        }
+      },
+
+      get: function(key) {
+        var index = this.keys.indexOf(key);
+        if (index < 0)
+          return;
+
+        return this.values[index];
+      },
+
+      delete: function(key, value) {
+        var index = this.keys.indexOf(key);
+        if (index < 0)
+          return false;
+
+        this.keys.splice(index, 1);
+        this.values.splice(index, 1);
+        return true;
+      },
+
+      forEach: function(f, opt_this) {
+        for (var i = 0; i < this.keys.length; i++)
+          f.call(opt_this || this, this.values[i], this.keys[i], this);
+      }
+    };
+  }
+
+  // JScript does not have __proto__. We wrap all object literals with
+  // createObject which uses Object.create, Object.defineProperty and
+  // Object.getOwnPropertyDescriptor to create a new object that does the exact
+  // same thing. The main downside to this solution is that we have to extract
+  // all those property descriptors for IE.
+  var createObject = ('__proto__' in {}) ?
+      function(obj) { return obj; } :
+      function(obj) {
+        var proto = obj.__proto__;
+        if (!proto)
+          return obj;
+        var newObject = Object.create(proto);
+        Object.getOwnPropertyNames(obj).forEach(function(name) {
+          Object.defineProperty(newObject, name,
+                               Object.getOwnPropertyDescriptor(obj, name));
+        });
+        return newObject;
+      };
+
+  // IE does not support have Document.prototype.contains.
+  if (typeof document.contains != 'function') {
+    Document.prototype.contains = function(node) {
+      if (node === this || node.parentNode === this)
+        return true;
+      return this.documentElement.contains(node);
+    }
+  }
+
+  var BIND = 'bind';
+  var REPEAT = 'repeat';
+  var IF = 'if';
+
+  var templateAttributeDirectives = {
+    'template': true,
+    'repeat': true,
+    'bind': true,
+    'ref': true
+  };
+
+  var semanticTemplateElements = {
+    'THEAD': true,
+    'TBODY': true,
+    'TFOOT': true,
+    'TH': true,
+    'TR': true,
+    'TD': true,
+    'COLGROUP': true,
+    'COL': true,
+    'CAPTION': true,
+    'OPTION': true,
+    'OPTGROUP': true
+  };
+
+  var hasTemplateElement = typeof HTMLTemplateElement !== 'undefined';
+  if (hasTemplateElement) {
+    // TODO(rafaelw): Remove when fix for
+    // https://codereview.chromium.org/164803002/
+    // makes it to Chrome release.
+    (function() {
+      var t = document.createElement('template');
+      var d = t.content.ownerDocument;
+      var html = d.appendChild(d.createElement('html'));
+      var head = html.appendChild(d.createElement('head'));
+      var base = d.createElement('base');
+      base.href = document.baseURI;
+      head.appendChild(base);
+    })();
+  }
+
+  var allTemplatesSelectors = 'template, ' +
+      Object.keys(semanticTemplateElements).map(function(tagName) {
+        return tagName.toLowerCase() + '[template]';
+      }).join(', ');
+
+  function isSVGTemplate(el) {
+    return el.tagName == 'template' &&
+           el.namespaceURI == 'http://www.w3.org/2000/svg';
+  }
+
+  function isHTMLTemplate(el) {
+    return el.tagName == 'TEMPLATE' &&
+           el.namespaceURI == 'http://www.w3.org/1999/xhtml';
+  }
+
+  function isAttributeTemplate(el) {
+    return Boolean(semanticTemplateElements[el.tagName] &&
+                   el.hasAttribute('template'));
+  }
+
+  function isTemplate(el) {
+    if (el.isTemplate_ === undefined)
+      el.isTemplate_ = el.tagName == 'TEMPLATE' || isAttributeTemplate(el);
+
+    return el.isTemplate_;
+  }
+
+  // FIXME: Observe templates being added/removed from documents
+  // FIXME: Expose imperative API to decorate and observe templates in
+  // "disconnected tress" (e.g. ShadowRoot)
+  document.addEventListener('DOMContentLoaded', function(e) {
+    bootstrapTemplatesRecursivelyFrom(document);
+    // FIXME: Is this needed? Seems like it shouldn't be.
+    Platform.performMicrotaskCheckpoint();
+  }, false);
+
+  function forAllTemplatesFrom(node, fn) {
+    var subTemplates = node.querySelectorAll(allTemplatesSelectors);
+
+    if (isTemplate(node))
+      fn(node)
+    forEach(subTemplates, fn);
+  }
+
+  function bootstrapTemplatesRecursivelyFrom(node) {
+    function bootstrap(template) {
+      if (!HTMLTemplateElement.decorate(template))
+        bootstrapTemplatesRecursivelyFrom(template.content);
+    }
+
+    forAllTemplatesFrom(node, bootstrap);
+  }
+
+  if (!hasTemplateElement) {
+    /**
+     * This represents a <template> element.
+     * @constructor
+     * @extends {HTMLElement}
+     */
+    global.HTMLTemplateElement = function() {
+      throw TypeError('Illegal constructor');
+    };
+  }
+
+  var hasProto = '__proto__' in {};
+
+  function mixin(to, from) {
+    Object.getOwnPropertyNames(from).forEach(function(name) {
+      Object.defineProperty(to, name,
+                            Object.getOwnPropertyDescriptor(from, name));
+    });
+  }
+
+  // http://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/templates/index.html#dfn-template-contents-owner
+  function getOrCreateTemplateContentsOwner(template) {
+    var doc = template.ownerDocument
+    if (!doc.defaultView)
+      return doc;
+    var d = doc.templateContentsOwner_;
+    if (!d) {
+      // TODO(arv): This should either be a Document or HTMLDocument depending
+      // on doc.
+      d = doc.implementation.createHTMLDocument('');
+      while (d.lastChild) {
+        d.removeChild(d.lastChild);
+      }
+      doc.templateContentsOwner_ = d;
+    }
+    return d;
+  }
+
+  function getTemplateStagingDocument(template) {
+    if (!template.stagingDocument_) {
+      var owner = template.ownerDocument;
+      if (!owner.stagingDocument_) {
+        owner.stagingDocument_ = owner.implementation.createHTMLDocument('');
+        owner.stagingDocument_.isStagingDocument = true;
+        // TODO(rafaelw): Remove when fix for
+        // https://codereview.chromium.org/164803002/
+        // makes it to Chrome release.
+        var base = owner.stagingDocument_.createElement('base');
+        base.href = document.baseURI;
+        owner.stagingDocument_.head.appendChild(base);
+
+        owner.stagingDocument_.stagingDocument_ = owner.stagingDocument_;
+      }
+
+      template.stagingDocument_ = owner.stagingDocument_;
+    }
+
+    return template.stagingDocument_;
+  }
+
+  // For non-template browsers, the parser will disallow <template> in certain
+  // locations, so we allow "attribute templates" which combine the template
+  // element with the top-level container node of the content, e.g.
+  //
+  //   <tr template repeat="{{ foo }}"" class="bar"><td>Bar</td></tr>
+  //
+  // becomes
+  //
+  //   <template repeat="{{ foo }}">
+  //   + #document-fragment
+  //     + <tr class="bar">
+  //       + <td>Bar</td>
+  //
+  function extractTemplateFromAttributeTemplate(el) {
+    var template = el.ownerDocument.createElement('template');
+    el.parentNode.insertBefore(template, el);
+
+    var attribs = el.attributes;
+    var count = attribs.length;
+    while (count-- > 0) {
+      var attrib = attribs[count];
+      if (templateAttributeDirectives[attrib.name]) {
+        if (attrib.name !== 'template')
+          template.setAttribute(attrib.name, attrib.value);
+        el.removeAttribute(attrib.name);
+      }
+    }
+
+    return template;
+  }
+
+  function extractTemplateFromSVGTemplate(el) {
+    var template = el.ownerDocument.createElement('template');
+    el.parentNode.insertBefore(template, el);
+
+    var attribs = el.attributes;
+    var count = attribs.length;
+    while (count-- > 0) {
+      var attrib = attribs[count];
+      template.setAttribute(attrib.name, attrib.value);
+      el.removeAttribute(attrib.name);
+    }
+
+    el.parentNode.removeChild(el);
+    return template;
+  }
+
+  function liftNonNativeTemplateChildrenIntoContent(template, el, useRoot) {
+    var content = template.content;
+    if (useRoot) {
+      content.appendChild(el);
+      return;
+    }
+
+    var child;
+    while (child = el.firstChild) {
+      content.appendChild(child);
+    }
+  }
+
+  var templateObserver;
+  if (typeof MutationObserver == 'function') {
+    templateObserver = new MutationObserver(function(records) {
+      for (var i = 0; i < records.length; i++) {
+        records[i].target.refChanged_();
+      }
+    });
+  }
+
+  /**
+   * Ensures proper API and content model for template elements.
+   * @param {HTMLTemplateElement} opt_instanceRef The template element which
+   *     |el| template element will return as the value of its ref(), and whose
+   *     content will be used as source when createInstance() is invoked.
+   */
+  HTMLTemplateElement.decorate = function(el, opt_instanceRef) {
+    if (el.templateIsDecorated_)
+      return false;
+
+    var templateElement = el;
+    templateElement.templateIsDecorated_ = true;
+
+    var isNativeHTMLTemplate = isHTMLTemplate(templateElement) &&
+                               hasTemplateElement;
+    var bootstrapContents = isNativeHTMLTemplate;
+    var liftContents = !isNativeHTMLTemplate;
+    var liftRoot = false;
+
+    if (!isNativeHTMLTemplate) {
+      if (isAttributeTemplate(templateElement)) {
+        assert(!opt_instanceRef);
+        templateElement = extractTemplateFromAttributeTemplate(el);
+        templateElement.templateIsDecorated_ = true;
+        isNativeHTMLTemplate = hasTemplateElement;
+        liftRoot = true;
+      } else if (isSVGTemplate(templateElement)) {
+        templateElement = extractTemplateFromSVGTemplate(el);
+        templateElement.templateIsDecorated_ = true;
+        isNativeHTMLTemplate = hasTemplateElement;
+      }
+    }
+
+    if (!isNativeHTMLTemplate) {
+      fixTemplateElementPrototype(templateElement);
+      var doc = getOrCreateTemplateContentsOwner(templateElement);
+      templateElement.content_ = doc.createDocumentFragment();
+    }
+
+    if (opt_instanceRef) {
+      // template is contained within an instance, its direct content must be
+      // empty
+      templateElement.instanceRef_ = opt_instanceRef;
+    } else if (liftContents) {
+      liftNonNativeTemplateChildrenIntoContent(templateElement,
+                                               el,
+                                               liftRoot);
+    } else if (bootstrapContents) {
+      bootstrapTemplatesRecursivelyFrom(templateElement.content);
+    }
+
+    return true;
+  };
+
+  // TODO(rafaelw): This used to decorate recursively all templates from a given
+  // node. This happens by default on 'DOMContentLoaded', but may be needed
+  // in subtrees not descendent from document (e.g. ShadowRoot).
+  // Review whether this is the right public API.
+  HTMLTemplateElement.bootstrap = bootstrapTemplatesRecursivelyFrom;
+
+  var htmlElement = global.HTMLUnknownElement || HTMLElement;
+
+  var contentDescriptor = {
+    get: function() {
+      return this.content_;
+    },
+    enumerable: true,
+    configurable: true
+  };
+
+  if (!hasTemplateElement) {
+    // Gecko is more picky with the prototype than WebKit. Make sure to use the
+    // same prototype as created in the constructor.
+    HTMLTemplateElement.prototype = Object.create(htmlElement.prototype);
+
+    Object.defineProperty(HTMLTemplateElement.prototype, 'content',
+                          contentDescriptor);
+  }
+
+  function fixTemplateElementPrototype(el) {
+    if (hasProto)
+      el.__proto__ = HTMLTemplateElement.prototype;
+    else
+      mixin(el, HTMLTemplateElement.prototype);
+  }
+
+  function ensureSetModelScheduled(template) {
+    if (!template.setModelFn_) {
+      template.setModelFn_ = function() {
+        template.setModelFnScheduled_ = false;
+        var map = getBindings(template,
+            template.delegate_ && template.delegate_.prepareBinding);
+        processBindings(template, map, template.model_);
+      };
+    }
+
+    if (!template.setModelFnScheduled_) {
+      template.setModelFnScheduled_ = true;
+      Observer.runEOM_(template.setModelFn_);
+    }
+  }
+
+  mixin(HTMLTemplateElement.prototype, {
+    bind: function(name, value, oneTime) {
+      if (name != 'ref')
+        return Element.prototype.bind.call(this, name, value, oneTime);
+
+      var self = this;
+      var ref = oneTime ? value : value.open(function(ref) {
+        self.setAttribute('ref', ref);
+        self.refChanged_();
+      });
+
+      this.setAttribute('ref', ref);
+      this.refChanged_();
+      if (oneTime)
+        return;
+
+      if (!this.bindings_) {
+        this.bindings_ = { ref: value };
+      } else {
+        this.bindings_.ref = value;
+      }
+
+      return value;
+    },
+
+    processBindingDirectives_: function(directives) {
+      if (this.iterator_)
+        this.iterator_.closeDeps();
+
+      if (!directives.if && !directives.bind && !directives.repeat) {
+        if (this.iterator_) {
+          this.iterator_.close();
+          this.iterator_ = undefined;
+        }
+
+        return;
+      }
+
+      if (!this.iterator_) {
+        this.iterator_ = new TemplateIterator(this);
+      }
+
+      this.iterator_.updateDependencies(directives, this.model_);
+
+      if (templateObserver) {
+        templateObserver.observe(this, { attributes: true,
+                                         attributeFilter: ['ref'] });
+      }
+
+      return this.iterator_;
+    },
+
+    createInstance: function(model, bindingDelegate, delegate_) {
+      if (bindingDelegate)
+        delegate_ = this.newDelegate_(bindingDelegate);
+      else if (!delegate_)
+        delegate_ = this.delegate_;
+
+      if (!this.refContent_)
+        this.refContent_ = this.ref_.content;
+      var content = this.refContent_;
+      if (content.firstChild === null)
+        return emptyInstance;
+
+      var map = getInstanceBindingMap(content, delegate_);
+      var stagingDocument = getTemplateStagingDocument(this);
+      var instance = stagingDocument.createDocumentFragment();
+      instance.templateCreator_ = this;
+      instance.protoContent_ = content;
+      instance.bindings_ = [];
+      instance.terminator_ = null;
+      var instanceRecord = instance.templateInstance_ = {
+        firstNode: null,
+        lastNode: null,
+        model: model
+      };
+
+      var i = 0;
+      var collectTerminator = false;
+      for (var child = content.firstChild; child; child = child.nextSibling) {
+        // The terminator of the instance is the clone of the last child of the
+        // content. If the last child is an active template, it may produce
+        // instances as a result of production, so simply collecting the last
+        // child of the instance after it has finished producing may be wrong.
+        if (child.nextSibling === null)
+          collectTerminator = true;
+
+        var clone = cloneAndBindInstance(child, instance, stagingDocument,
+                                         map.children[i++],
+                                         model,
+                                         delegate_,
+                                         instance.bindings_);
+        clone.templateInstance_ = instanceRecord;
+        if (collectTerminator)
+          instance.terminator_ = clone;
+      }
+
+      instanceRecord.firstNode = instance.firstChild;
+      instanceRecord.lastNode = instance.lastChild;
+      instance.templateCreator_ = undefined;
+      instance.protoContent_ = undefined;
+      return instance;
+    },
+
+    get model() {
+      return this.model_;
+    },
+
+    set model(model) {
+      this.model_ = model;
+      ensureSetModelScheduled(this);
+    },
+
+    get bindingDelegate() {
+      return this.delegate_ && this.delegate_.raw;
+    },
+
+    refChanged_: function() {
+      if (!this.iterator_ || this.refContent_ === this.ref_.content)
+        return;
+
+      this.refContent_ = undefined;
+      this.iterator_.valueChanged();
+      this.iterator_.updateIteratedValue(this.iterator_.getUpdatedValue());
+    },
+
+    clear: function() {
+      this.model_ = undefined;
+      this.delegate_ = undefined;
+      if (this.bindings_ && this.bindings_.ref)
+        this.bindings_.ref.close()
+      this.refContent_ = undefined;
+      if (!this.iterator_)
+        return;
+      this.iterator_.valueChanged();
+      this.iterator_.close()
+      this.iterator_ = undefined;
+    },
+
+    setDelegate_: function(delegate) {
+      this.delegate_ = delegate;
+      this.bindingMap_ = undefined;
+      if (this.iterator_) {
+        this.iterator_.instancePositionChangedFn_ = undefined;
+        this.iterator_.instanceModelFn_ = undefined;
+      }
+    },
+
+    newDelegate_: function(bindingDelegate) {
+      if (!bindingDelegate)
+        return;
+
+      function delegateFn(name) {
+        var fn = bindingDelegate && bindingDelegate[name];
+        if (typeof fn != 'function')
+          return;
+
+        return function() {
+          return fn.apply(bindingDelegate, arguments);
+        };
+      }
+
+      return {
+        bindingMaps: {},
+        raw: bindingDelegate,
+        prepareBinding: delegateFn('prepareBinding'),
+        prepareInstanceModel: delegateFn('prepareInstanceModel'),
+        prepareInstancePositionChanged:
+            delegateFn('prepareInstancePositionChanged')
+      };
+    },
+
+    set bindingDelegate(bindingDelegate) {
+      if (this.delegate_) {
+        throw Error('Template must be cleared before a new bindingDelegate ' +
+                    'can be assigned');
+      }
+
+      this.setDelegate_(this.newDelegate_(bindingDelegate));
+    },
+
+    get ref_() {
+      var ref = searchRefId(this, this.getAttribute('ref'));
+      if (!ref)
+        ref = this.instanceRef_;
+
+      if (!ref)
+        return this;
+
+      var nextRef = ref.ref_;
+      return nextRef ? nextRef : ref;
+    }
+  });
+
+  // Returns
+  //   a) undefined if there are no mustaches.
+  //   b) [TEXT, (ONE_TIME?, PATH, DELEGATE_FN, TEXT)+] if there is at least one mustache.
+  function parseMustaches(s, name, node, prepareBindingFn) {
+    if (!s || !s.length)
+      return;
+
+    var tokens;
+    var length = s.length;
+    var startIndex = 0, lastIndex = 0, endIndex = 0;
+    var onlyOneTime = true;
+    while (lastIndex < length) {
+      var startIndex = s.indexOf('{{', lastIndex);
+      var oneTimeStart = s.indexOf('[[', lastIndex);
+      var oneTime = false;
+      var terminator = '}}';
+
+      if (oneTimeStart >= 0 &&
+          (startIndex < 0 || oneTimeStart < startIndex)) {
+        startIndex = oneTimeStart;
+        oneTime = true;
+        terminator = ']]';
+      }
+
+      endIndex = startIndex < 0 ? -1 : s.indexOf(terminator, startIndex + 2);
+
+      if (endIndex < 0) {
+        if (!tokens)
+          return;
+
+        tokens.push(s.slice(lastIndex)); // TEXT
+        break;
+      }
+
+      tokens = tokens || [];
+      tokens.push(s.slice(lastIndex, startIndex)); // TEXT
+      var pathString = s.slice(startIndex + 2, endIndex).trim();
+      tokens.push(oneTime); // ONE_TIME?
+      onlyOneTime = onlyOneTime && oneTime;
+      var delegateFn = prepareBindingFn &&
+                       prepareBindingFn(pathString, name, node);
+      // Don't try to parse the expression if there's a prepareBinding function
+      if (delegateFn == null) {
+        tokens.push(Path.get(pathString)); // PATH
+      } else {
+        tokens.push(null);
+      }
+      tokens.push(delegateFn); // DELEGATE_FN
+      lastIndex = endIndex + 2;
+    }
+
+    if (lastIndex === length)
+      tokens.push(''); // TEXT
+
+    tokens.hasOnePath = tokens.length === 5;
+    tokens.isSimplePath = tokens.hasOnePath &&
+                          tokens[0] == '' &&
+                          tokens[4] == '';
+    tokens.onlyOneTime = onlyOneTime;
+
+    tokens.combinator = function(values) {
+      var newValue = tokens[0];
+
+      for (var i = 1; i < tokens.length; i += 4) {
+        var value = tokens.hasOnePath ? values : values[(i - 1) / 4];
+        if (value !== undefined)
+          newValue += value;
+        newValue += tokens[i + 3];
+      }
+
+      return newValue;
+    }
+
+    return tokens;
+  };
+
+  function processOneTimeBinding(name, tokens, node, model) {
+    if (tokens.hasOnePath) {
+      var delegateFn = tokens[3];
+      var value = delegateFn ? delegateFn(model, node, true) :
+                               tokens[2].getValueFrom(model);
+      return tokens.isSimplePath ? value : tokens.combinator(value);
+    }
+
+    var values = [];
+    for (var i = 1; i < tokens.length; i += 4) {
+      var delegateFn = tokens[i + 2];
+      values[(i - 1) / 4] = delegateFn ? delegateFn(model, node) :
+          tokens[i + 1].getValueFrom(model);
+    }
+
+    return tokens.combinator(values);
+  }
+
+  function processSinglePathBinding(name, tokens, node, model) {
+    var delegateFn = tokens[3];
+    var observer = delegateFn ? delegateFn(model, node, false) :
+        new PathObserver(model, tokens[2]);
+
+    return tokens.isSimplePath ? observer :
+        new ObserverTransform(observer, tokens.combinator);
+  }
+
+  function processBinding(name, tokens, node, model) {
+    if (tokens.onlyOneTime)
+      return processOneTimeBinding(name, tokens, node, model);
+
+    if (tokens.hasOnePath)
+      return processSinglePathBinding(name, tokens, node, model);
+
+    var observer = new CompoundObserver();
+
+    for (var i = 1; i < tokens.length; i += 4) {
+      var oneTime = tokens[i];
+      var delegateFn = tokens[i + 2];
+
+      if (delegateFn) {
+        var value = delegateFn(model, node, oneTime);
+        if (oneTime)
+          observer.addPath(value)
+        else
+          observer.addObserver(value);
+        continue;
+      }
+
+      var path = tokens[i + 1];
+      if (oneTime)
+        observer.addPath(path.getValueFrom(model))
+      else
+        observer.addPath(model, path);
+    }
+
+    return new ObserverTransform(observer, tokens.combinator);
+  }
+
+  function processBindings(node, bindings, model, instanceBindings) {
+    for (var i = 0; i < bindings.length; i += 2) {
+      var name = bindings[i]
+      var tokens = bindings[i + 1];
+      var value = processBinding(name, tokens, node, model);
+      var binding = node.bind(name, value, tokens.onlyOneTime);
+      if (binding && instanceBindings)
+        instanceBindings.push(binding);
+    }
+
+    node.bindFinished();
+    if (!bindings.isTemplate)
+      return;
+
+    node.model_ = model;
+    var iter = node.processBindingDirectives_(bindings);
+    if (instanceBindings && iter)
+      instanceBindings.push(iter);
+  }
+
+  function parseWithDefault(el, name, prepareBindingFn) {
+    var v = el.getAttribute(name);
+    return parseMustaches(v == '' ? '{{}}' : v, name, el, prepareBindingFn);
+  }
+
+  function parseAttributeBindings(element, prepareBindingFn) {
+    assert(element);
+
+    var bindings = [];
+    var ifFound = false;
+    var bindFound = false;
+
+    for (var i = 0; i < element.attributes.length; i++) {
+      var attr = element.attributes[i];
+      var name = attr.name;
+      var value = attr.value;
+
+      // Allow bindings expressed in attributes to be prefixed with underbars.
+      // We do this to allow correct semantics for browsers that don't implement
+      // <template> where certain attributes might trigger side-effects -- and
+      // for IE which sanitizes certain attributes, disallowing mustache
+      // replacements in their text.
+      while (name[0] === '_') {
+        name = name.substring(1);
+      }
+
+      if (isTemplate(element) &&
+          (name === IF || name === BIND || name === REPEAT)) {
+        continue;
+      }
+
+      var tokens = parseMustaches(value, name, element,
+                                  prepareBindingFn);
+      if (!tokens)
+        continue;
+
+      bindings.push(name, tokens);
+    }
+
+    if (isTemplate(element)) {
+      bindings.isTemplate = true;
+      bindings.if = parseWithDefault(element, IF, prepareBindingFn);
+      bindings.bind = parseWithDefault(element, BIND, prepareBindingFn);
+      bindings.repeat = parseWithDefault(element, REPEAT, prepareBindingFn);
+
+      if (bindings.if && !bindings.bind && !bindings.repeat)
+        bindings.bind = parseMustaches('{{}}', BIND, element, prepareBindingFn);
+    }
+
+    return bindings;
+  }
+
+  function getBindings(node, prepareBindingFn) {
+    if (node.nodeType === Node.ELEMENT_NODE)
+      return parseAttributeBindings(node, prepareBindingFn);
+
+    if (node.nodeType === Node.TEXT_NODE) {
+      var tokens = parseMustaches(node.data, 'textContent', node,
+                                  prepareBindingFn);
+      if (tokens)
+        return ['textContent', tokens];
+    }
+
+    return [];
+  }
+
+  function cloneAndBindInstance(node, parent, stagingDocument, bindings, model,
+                                delegate,
+                                instanceBindings,
+                                instanceRecord) {
+    var clone = parent.appendChild(stagingDocument.importNode(node, false));
+
+    var i = 0;
+    for (var child = node.firstChild; child; child = child.nextSibling) {
+      cloneAndBindInstance(child, clone, stagingDocument,
+                            bindings.children[i++],
+                            model,
+                            delegate,
+                            instanceBindings);
+    }
+
+    if (bindings.isTemplate) {
+      HTMLTemplateElement.decorate(clone, node);
+      if (delegate)
+        clone.setDelegate_(delegate);
+    }
+
+    processBindings(clone, bindings, model, instanceBindings);
+    return clone;
+  }
+
+  function createInstanceBindingMap(node, prepareBindingFn) {
+    var map = getBindings(node, prepareBindingFn);
+    map.children = {};
+    var index = 0;
+    for (var child = node.firstChild; child; child = child.nextSibling) {
+      map.children[index++] = createInstanceBindingMap(child, prepareBindingFn);
+    }
+
+    return map;
+  }
+
+  var contentUidCounter = 1;
+
+  // TODO(rafaelw): Setup a MutationObserver on content which clears the id
+  // so that bindingMaps regenerate when the template.content changes.
+  function getContentUid(content) {
+    var id = content.id_;
+    if (!id)
+      id = content.id_ = contentUidCounter++;
+    return id;
+  }
+
+  // Each delegate is associated with a set of bindingMaps, one for each
+  // content which may be used by a template. The intent is that each binding
+  // delegate gets the opportunity to prepare the instance (via the prepare*
+  // delegate calls) once across all uses.
+  // TODO(rafaelw): Separate out the parse map from the binding map. In the
+  // current implementation, if two delegates need a binding map for the same
+  // content, the second will have to reparse.
+  function getInstanceBindingMap(content, delegate_) {
+    var contentId = getContentUid(content);
+    if (delegate_) {
+      var map = delegate_.bindingMaps[contentId];
+      if (!map) {
+        map = delegate_.bindingMaps[contentId] =
+            createInstanceBindingMap(content, delegate_.prepareBinding) || [];
+      }
+      return map;
+    }
+
+    var map = content.bindingMap_;
+    if (!map) {
+      map = content.bindingMap_ =
+          createInstanceBindingMap(content, undefined) || [];
+    }
+    return map;
+  }
+
+  Object.defineProperty(Node.prototype, 'templateInstance', {
+    get: function() {
+      var instance = this.templateInstance_;
+      return instance ? instance :
+          (this.parentNode ? this.parentNode.templateInstance : undefined);
+    }
+  });
+
+  var emptyInstance = document.createDocumentFragment();
+  emptyInstance.bindings_ = [];
+  emptyInstance.terminator_ = null;
+
+  function TemplateIterator(templateElement) {
+    this.closed = false;
+    this.templateElement_ = templateElement;
+    this.instances = [];
+    this.deps = undefined;
+    this.iteratedValue = [];
+    this.presentValue = undefined;
+    this.arrayObserver = undefined;
+  }
+
+  TemplateIterator.prototype = {
+    closeDeps: function() {
+      var deps = this.deps;
+      if (deps) {
+        if (deps.ifOneTime === false)
+          deps.ifValue.close();
+        if (deps.oneTime === false)
+          deps.value.close();
+      }
+    },
+
+    updateDependencies: function(directives, model) {
+      this.closeDeps();
+
+      var deps = this.deps = {};
+      var template = this.templateElement_;
+
+      var ifValue = true;
+      if (directives.if) {
+        deps.hasIf = true;
+        deps.ifOneTime = directives.if.onlyOneTime;
+        deps.ifValue = processBinding(IF, directives.if, template, model);
+
+        ifValue = deps.ifValue;
+
+        // oneTime if & predicate is false. nothing else to do.
+        if (deps.ifOneTime && !ifValue) {
+          this.valueChanged();
+          return;
+        }
+
+        if (!deps.ifOneTime)
+          ifValue = ifValue.open(this.updateIfValue, this);
+      }
+
+      if (directives.repeat) {
+        deps.repeat = true;
+        deps.oneTime = directives.repeat.onlyOneTime;
+        deps.value = processBinding(REPEAT, directives.repeat, template, model);
+      } else {
+        deps.repeat = false;
+        deps.oneTime = directives.bind.onlyOneTime;
+        deps.value = processBinding(BIND, directives.bind, template, model);
+      }
+
+      var value = deps.value;
+      if (!deps.oneTime)
+        value = value.open(this.updateIteratedValue, this);
+
+      if (!ifValue) {
+        this.valueChanged();
+        return;
+      }
+
+      this.updateValue(value);
+    },
+
+    /**
+     * Gets the updated value of the bind/repeat. This can potentially call
+     * user code (if a bindingDelegate is set up) so we try to avoid it if we
+     * already have the value in hand (from Observer.open).
+     */
+    getUpdatedValue: function() {
+      var value = this.deps.value;
+      if (!this.deps.oneTime)
+        value = value.discardChanges();
+      return value;
+    },
+
+    updateIfValue: function(ifValue) {
+      if (!ifValue) {
+        this.valueChanged();
+        return;
+      }
+
+      this.updateValue(this.getUpdatedValue());
+    },
+
+    updateIteratedValue: function(value) {
+      if (this.deps.hasIf) {
+        var ifValue = this.deps.ifValue;
+        if (!this.deps.ifOneTime)
+          ifValue = ifValue.discardChanges();
+        if (!ifValue) {
+          this.valueChanged();
+          return;
+        }
+      }
+
+      this.updateValue(value);
+    },
+
+    updateValue: function(value) {
+      if (!this.deps.repeat)
+        value = [value];
+      var observe = this.deps.repeat &&
+                    !this.deps.oneTime &&
+                    Array.isArray(value);
+      this.valueChanged(value, observe);
+    },
+
+    valueChanged: function(value, observeValue) {
+      if (!Array.isArray(value))
+        value = [];
+
+      if (value === this.iteratedValue)
+        return;
+
+      this.unobserve();
+      this.presentValue = value;
+      if (observeValue) {
+        this.arrayObserver = new ArrayObserver(this.presentValue);
+        this.arrayObserver.open(this.handleSplices, this);
+      }
+
+      this.handleSplices(ArrayObserver.calculateSplices(this.presentValue,
+                                                        this.iteratedValue));
+    },
+
+    getLastInstanceNode: function(index) {
+      if (index == -1)
+        return this.templateElement_;
+      var instance = this.instances[index];
+      var terminator = instance.terminator_;
+      if (!terminator)
+        return this.getLastInstanceNode(index - 1);
+
+      if (terminator.nodeType !== Node.ELEMENT_NODE ||
+          this.templateElement_ === terminator) {
+        return terminator;
+      }
+
+      var subtemplateIterator = terminator.iterator_;
+      if (!subtemplateIterator)
+        return terminator;
+
+      return subtemplateIterator.getLastTemplateNode();
+    },
+
+    getLastTemplateNode: function() {
+      return this.getLastInstanceNode(this.instances.length - 1);
+    },
+
+    insertInstanceAt: function(index, fragment) {
+      var previousInstanceLast = this.getLastInstanceNode(index - 1);
+      var parent = this.templateElement_.parentNode;
+      this.instances.splice(index, 0, fragment);
+
+      parent.insertBefore(fragment, previousInstanceLast.nextSibling);
+    },
+
+    extractInstanceAt: function(index) {
+      var previousInstanceLast = this.getLastInstanceNode(index - 1);
+      var lastNode = this.getLastInstanceNode(index);
+      var parent = this.templateElement_.parentNode;
+      var instance = this.instances.splice(index, 1)[0];
+
+      while (lastNode !== previousInstanceLast) {
+        var node = previousInstanceLast.nextSibling;
+        if (node == lastNode)
+          lastNode = previousInstanceLast;
+
+        instance.appendChild(parent.removeChild(node));
+      }
+
+      return instance;
+    },
+
+    getDelegateFn: function(fn) {
+      fn = fn && fn(this.templateElement_);
+      return typeof fn === 'function' ? fn : null;
+    },
+
+    handleSplices: function(splices) {
+      if (this.closed || !splices.length)
+        return;
+
+      var template = this.templateElement_;
+
+      if (!template.parentNode) {
+        this.close();
+        return;
+      }
+
+      ArrayObserver.applySplices(this.iteratedValue, this.presentValue,
+                                 splices);
+
+      var delegate = template.delegate_;
+      if (this.instanceModelFn_ === undefined) {
+        this.instanceModelFn_ =
+            this.getDelegateFn(delegate && delegate.prepareInstanceModel);
+      }
+
+      if (this.instancePositionChangedFn_ === undefined) {
+        this.instancePositionChangedFn_ =
+            this.getDelegateFn(delegate &&
+                               delegate.prepareInstancePositionChanged);
+      }
+
+      // Instance Removals
+      var instanceCache = new Map;
+      var removeDelta = 0;
+      for (var i = 0; i < splices.length; i++) {
+        var splice = splices[i];
+        var removed = splice.removed;
+        for (var j = 0; j < removed.length; j++) {
+          var model = removed[j];
+          var instance = this.extractInstanceAt(splice.index + removeDelta);
+          if (instance !== emptyInstance) {
+            instanceCache.set(model, instance);
+          }
+        }
+
+        removeDelta -= splice.addedCount;
+      }
+
+      // Instance Insertions
+      for (var i = 0; i < splices.length; i++) {
+        var splice = splices[i];
+        var addIndex = splice.index;
+        for (; addIndex < splice.index + splice.addedCount; addIndex++) {
+          var model = this.iteratedValue[addIndex];
+          var instance = instanceCache.get(model);
+          if (instance) {
+            instanceCache.delete(model);
+          } else {
+            if (this.instanceModelFn_) {
+              model = this.instanceModelFn_(model);
+            }
+
+            if (model === undefined) {
+              instance = emptyInstance;
+            } else {
+              instance = template.createInstance(model, undefined, delegate);
+            }
+          }
+
+          this.insertInstanceAt(addIndex, instance);
+        }
+      }
+
+      instanceCache.forEach(function(instance) {
+        this.closeInstanceBindings(instance);
+      }, this);
+
+      if (this.instancePositionChangedFn_)
+        this.reportInstancesMoved(splices);
+    },
+
+    reportInstanceMoved: function(index) {
+      var instance = this.instances[index];
+      if (instance === emptyInstance)
+        return;
+
+      this.instancePositionChangedFn_(instance.templateInstance_, index);
+    },
+
+    reportInstancesMoved: function(splices) {
+      var index = 0;
+      var offset = 0;
+      for (var i = 0; i < splices.length; i++) {
+        var splice = splices[i];
+        if (offset != 0) {
+          while (index < splice.index) {
+            this.reportInstanceMoved(index);
+            index++;
+          }
+        } else {
+          index = splice.index;
+        }
+
+        while (index < splice.index + splice.addedCount) {
+          this.reportInstanceMoved(index);
+          index++;
+        }
+
+        offset += splice.addedCount - splice.removed.length;
+      }
+
+      if (offset == 0)
+        return;
+
+      var length = this.instances.length;
+      while (index < length) {
+        this.reportInstanceMoved(index);
+        index++;
+      }
+    },
+
+    closeInstanceBindings: function(instance) {
+      var bindings = instance.bindings_;
+      for (var i = 0; i < bindings.length; i++) {
+        bindings[i].close();
+      }
+    },
+
+    unobserve: function() {
+      if (!this.arrayObserver)
+        return;
+
+      this.arrayObserver.close();
+      this.arrayObserver = undefined;
+    },
+
+    close: function() {
+      if (this.closed)
+        return;
+      this.unobserve();
+      for (var i = 0; i < this.instances.length; i++) {
+        this.closeInstanceBindings(this.instances[i]);
+      }
+
+      this.instances.length = 0;
+      this.closeDeps();
+      this.templateElement_.iterator_ = undefined;
+      this.closed = true;
+    }
+  };
+
+  // Polyfill-specific API.
+  HTMLTemplateElement.forAllTemplatesFrom_ = forAllTemplatesFrom;
+})(this);
+
+(function(scope) {
+  'use strict';
+
+  // feature detect for URL constructor
+  var hasWorkingUrl = false;
+  if (!scope.forceJURL) {
+    try {
+      var u = new URL('b', 'http://a');
+      hasWorkingUrl = u.href === 'http://a/b';
+    } catch(e) {}
+  }
+
+  if (hasWorkingUrl)
+    return;
+
+  var relative = Object.create(null);
+  relative['ftp'] = 21;
+  relative['file'] = 0;
+  relative['gopher'] = 70;
+  relative['http'] = 80;
+  relative['https'] = 443;
+  relative['ws'] = 80;
+  relative['wss'] = 443;
+
+  var relativePathDotMapping = Object.create(null);
+  relativePathDotMapping['%2e'] = '.';
+  relativePathDotMapping['.%2e'] = '..';
+  relativePathDotMapping['%2e.'] = '..';
+  relativePathDotMapping['%2e%2e'] = '..';
+
+  function isRelativeScheme(scheme) {
+    return relative[scheme] !== undefined;
+  }
+
+  function invalid() {
+    clear.call(this);
+    this._isInvalid = true;
+  }
+
+  function IDNAToASCII(h) {
+    if ('' == h) {
+      invalid.call(this)
+    }
+    // XXX
+    return h.toLowerCase()
+  }
+
+  function percentEscape(c) {
+    var unicode = c.charCodeAt(0);
+    if (unicode > 0x20 &&
+       unicode < 0x7F &&
+       // " # < > ? `
+       [0x22, 0x23, 0x3C, 0x3E, 0x3F, 0x60].indexOf(unicode) == -1
+      ) {
+      return c;
+    }
+    return encodeURIComponent(c);
+  }
+
+  function percentEscapeQuery(c) {
+    // XXX This actually needs to encode c using encoding and then
+    // convert the bytes one-by-one.
+
+    var unicode = c.charCodeAt(0);
+    if (unicode > 0x20 &&
+       unicode < 0x7F &&
+       // " # < > ` (do not escape '?')
+       [0x22, 0x23, 0x3C, 0x3E, 0x60].indexOf(unicode) == -1
+      ) {
+      return c;
+    }
+    return encodeURIComponent(c);
+  }
+
+  var EOF = undefined,
+      ALPHA = /[a-zA-Z]/,
+      ALPHANUMERIC = /[a-zA-Z0-9\+\-\.]/;
+
+  function parse(input, stateOverride, base) {
+    function err(message) {
+      errors.push(message)
+    }
+
+    var state = stateOverride || 'scheme start',
+        cursor = 0,
+        buffer = '',
+        seenAt = false,
+        seenBracket = false,
+        errors = [];
+
+    loop: while ((input[cursor - 1] != EOF || cursor == 0) && !this._isInvalid) {
+      var c = input[cursor];
+      switch (state) {
+        case 'scheme start':
+          if (c && ALPHA.test(c)) {
+            buffer += c.toLowerCase(); // ASCII-safe
+            state = 'scheme';
+          } else if (!stateOverride) {
+            buffer = '';
+            state = 'no scheme';
+            continue;
+          } else {
+            err('Invalid scheme.');
+            break loop;
+          }
+          break;
+
+        case 'scheme':
+          if (c && ALPHANUMERIC.test(c)) {
+            buffer += c.toLowerCase(); // ASCII-safe
+          } else if (':' == c) {
+            this._scheme = buffer;
+            buffer = '';
+            if (stateOverride) {
+              break loop;
+            }
+            if (isRelativeScheme(this._scheme)) {
+              this._isRelative = true;
+            }
+            if ('file' == this._scheme) {
+              state = 'relative';
+            } else if (this._isRelative && base && base._scheme == this._scheme) {
+              state = 'relative or authority';
+            } else if (this._isRelative) {
+              state = 'authority first slash';
+            } else {
+              state = 'scheme data';
+            }
+          } else if (!stateOverride) {
+            buffer = '';
+            cursor = 0;
+            state = 'no scheme';
+            continue;
+          } else if (EOF == c) {
+            break loop;
+          } else {
+            err('Code point not allowed in scheme: ' + c)
+            break loop;
+          }
+          break;
+
+        case 'scheme data':
+          if ('?' == c) {
+            query = '?';
+            state = 'query';
+          } else if ('#' == c) {
+            this._fragment = '#';
+            state = 'fragment';
+          } else {
+            // XXX error handling
+            if (EOF != c && '\t' != c && '\n' != c && '\r' != c) {
+              this._schemeData += percentEscape(c);
+            }
+          }
+          break;
+
+        case 'no scheme':
+          if (!base || !(isRelativeScheme(base._scheme))) {
+            err('Missing scheme.');
+            invalid.call(this);
+          } else {
+            state = 'relative';
+            continue;
+          }
+          break;
+
+        case 'relative or authority':
+          if ('/' == c && '/' == input[cursor+1]) {
+            state = 'authority ignore slashes';
+          } else {
+            err('Expected /, got: ' + c);
+            state = 'relative';
+            continue
+          }
+          break;
+
+        case 'relative':
+          this._isRelative = true;
+          if ('file' != this._scheme)
+            this._scheme = base._scheme;
+          if (EOF == c) {
+            this._host = base._host;
+            this._port = base._port;
+            this._path = base._path.slice();
+            this._query = base._query;
+            break loop;
+          } else if ('/' == c || '\\' == c) {
+            if ('\\' == c)
+              err('\\ is an invalid code point.');
+            state = 'relative slash';
+          } else if ('?' == c) {
+            this._host = base._host;
+            this._port = base._port;
+            this._path = base._path.slice();
+            this._query = '?';
+            state = 'query';
+          } else if ('#' == c) {
+            this._host = base._host;
+            this._port = base._port;
+            this._path = base._path.slice();
+            this._query = base._query;
+            this._fragment = '#';
+            state = 'fragment';
+          } else {
+            var nextC = input[cursor+1]
+            var nextNextC = input[cursor+2]
+            if (
+              'file' != this._scheme || !ALPHA.test(c) ||
+              (nextC != ':' && nextC != '|') ||
+              (EOF != nextNextC && '/' != nextNextC && '\\' != nextNextC && '?' != nextNextC && '#' != nextNextC)) {
+              this._host = base._host;
+              this._port = base._port;
+              this._path = base._path.slice();
+              this._path.pop();
+            }
+            state = 'relative path';
+            continue;
+          }
+          break;
+
+        case 'relative slash':
+          if ('/' == c || '\\' == c) {
+            if ('\\' == c) {
+              err('\\ is an invalid code point.');
+            }
+            if ('file' == this._scheme) {
+              state = 'file host';
+            } else {
+              state = 'authority ignore slashes';
+            }
+          } else {
+            if ('file' != this._scheme) {
+              this._host = base._host;
+              this._port = base._port;
+            }
+            state = 'relative path';
+            continue;
+          }
+          break;
+
+        case 'authority first slash':
+          if ('/' == c) {
+            state = 'authority second slash';
+          } else {
+            err("Expected '/', got: " + c);
+            state = 'authority ignore slashes';
+            continue;
+          }
+          break;
+
+        case 'authority second slash':
+          state = 'authority ignore slashes';
+          if ('/' != c) {
+            err("Expected '/', got: " + c);
+            continue;
+          }
+          break;
+
+        case 'authority ignore slashes':
+          if ('/' != c && '\\' != c) {
+            state = 'authority';
+            continue;
+          } else {
+            err('Expected authority, got: ' + c);
+          }
+          break;
+
+        case 'authority':
+          if ('@' == c) {
+            if (seenAt) {
+              err('@ already seen.');
+              buffer += '%40';
+            }
+            seenAt = true;
+            for (var i = 0; i < buffer.length; i++) {
+              var cp = buffer[i];
+              if ('\t' == cp || '\n' == cp || '\r' == cp) {
+                err('Invalid whitespace in authority.');
+                continue;
+              }
+              // XXX check URL code points
+              if (':' == cp && null === this._password) {
+                this._password = '';
+                continue;
+              }
+              var tempC = percentEscape(cp);
+              (null !== this._password) ? this._password += tempC : this._username += tempC;
+            }
+            buffer = '';
+          } else if (EOF == c || '/' == c || '\\' == c || '?' == c || '#' == c) {
+            cursor -= buffer.length;
+            buffer = '';
+            state = 'host';
+            continue;
+          } else {
+            buffer += c;
+          }
+          break;
+
+        case 'file host':
+          if (EOF == c || '/' == c || '\\' == c || '?' == c || '#' == c) {
+            if (buffer.length == 2 && ALPHA.test(buffer[0]) && (buffer[1] == ':' || buffer[1] == '|')) {
+              state = 'relative path';
+            } else if (buffer.length == 0) {
+              state = 'relative path start';
+            } else {
+              this._host = IDNAToASCII.call(this, buffer);
+              buffer = '';
+              state = 'relative path start';
+            }
+            continue;
+          } else if ('\t' == c || '\n' == c || '\r' == c) {
+            err('Invalid whitespace in file host.');
+          } else {
+            buffer += c;
+          }
+          break;
+
+        case 'host':
+        case 'hostname':
+          if (':' == c && !seenBracket) {
+            // XXX host parsing
+            this._host = IDNAToASCII.call(this, buffer);
+            buffer = '';
+            state = 'port';
+            if ('hostname' == stateOverride) {
+              break loop;
+            }
+          } else if (EOF == c || '/' == c || '\\' == c || '?' == c || '#' == c) {
+            this._host = IDNAToASCII.call(this, buffer);
+            buffer = '';
+            state = 'relative path start';
+            if (stateOverride) {
+              break loop;
+            }
+            continue;
+          } else if ('\t' != c && '\n' != c && '\r' != c) {
+            if ('[' == c) {
+              seenBracket = true;
+            } else if (']' == c) {
+              seenBracket = false;
+            }
+            buffer += c;
+          } else {
+            err('Invalid code point in host/hostname: ' + c);
+          }
+          break;
+
+        case 'port':
+          if (/[0-9]/.test(c)) {
+            buffer += c;
+          } else if (EOF == c || '/' == c || '\\' == c || '?' == c || '#' == c || stateOverride) {
+            if ('' != buffer) {
+              var temp = parseInt(buffer, 10);
+              if (temp != relative[this._scheme]) {
+                this._port = temp + '';
+              }
+              buffer = '';
+            }
+            if (stateOverride) {
+              break loop;
+            }
+            state = 'relative path start';
+            continue;
+          } else if ('\t' == c || '\n' == c || '\r' == c) {
+            err('Invalid code point in port: ' + c);
+          } else {
+            invalid.call(this);
+          }
+          break;
+
+        case 'relative path start':
+          if ('\\' == c)
+            err("'\\' not allowed in path.");
+          state = 'relative path';
+          if ('/' != c && '\\' != c) {
+            continue;
+          }
+          break;
+
+        case 'relative path':
+          if (EOF == c || '/' == c || '\\' == c || (!stateOverride && ('?' == c || '#' == c))) {
+            if ('\\' == c) {
+              err('\\ not allowed in relative path.');
+            }
+            var tmp;
+            if (tmp = relativePathDotMapping[buffer.toLowerCase()]) {
+              buffer = tmp;
+            }
+            if ('..' == buffer) {
+              this._path.pop();
+              if ('/' != c && '\\' != c) {
+                this._path.push('');
+              }
+            } else if ('.' == buffer && '/' != c && '\\' != c) {
+              this._path.push('');
+            } else if ('.' != buffer) {
+              if ('file' == this._scheme && this._path.length == 0 && buffer.length == 2 && ALPHA.test(buffer[0]) && buffer[1] == '|') {
+                buffer = buffer[0] + ':';
+              }
+              this._path.push(buffer);
+            }
+            buffer = '';
+            if ('?' == c) {
+              this._query = '?';
+              state = 'query';
+            } else if ('#' == c) {
+              this._fragment = '#';
+              state = 'fragment';
+            }
+          } else if ('\t' != c && '\n' != c && '\r' != c) {
+            buffer += percentEscape(c);
+          }
+          break;
+
+        case 'query':
+          if (!stateOverride && '#' == c) {
+            this._fragment = '#';
+            state = 'fragment';
+          } else if (EOF != c && '\t' != c && '\n' != c && '\r' != c) {
+            this._query += percentEscapeQuery(c);
+          }
+          break;
+
+        case 'fragment':
+          if (EOF != c && '\t' != c && '\n' != c && '\r' != c) {
+            this._fragment += c;
+          }
+          break;
+      }
+
+      cursor++;
+    }
+  }
+
+  function clear() {
+    this._scheme = '';
+    this._schemeData = '';
+    this._username = '';
+    this._password = null;
+    this._host = '';
+    this._port = '';
+    this._path = [];
+    this._query = '';
+    this._fragment = '';
+    this._isInvalid = false;
+    this._isRelative = false;
+  }
+
+  // Does not process domain names or IP addresses.
+  // Does not handle encoding for the query parameter.
+  function jURL(url, base /* , encoding */) {
+    if (base !== undefined && !(base instanceof jURL))
+      base = new jURL(String(base));
+
+    this._url = url;
+    clear.call(this);
+
+    var input = url.replace(/^[ \t\r\n\f]+|[ \t\r\n\f]+$/g, '');
+    // encoding = encoding || 'utf-8'
+
+    parse.call(this, input, null, base);
+  }
+
+  jURL.prototype = {
+    get href() {
+      if (this._isInvalid)
+        return this._url;
+
+      var authority = '';
+      if ('' != this._username || null != this._password) {
+        authority = this._username +
+            (null != this._password ? ':' + this._password : '') + '@';
+      }
+
+      return this.protocol +
+          (this._isRelative ? '//' + authority + this.host : '') +
+          this.pathname + this._query + this._fragment;
+    },
+    set href(href) {
+      clear.call(this);
+      parse.call(this, href);
+    },
+
+    get protocol() {
+      return this._scheme + ':';
+    },
+    set protocol(protocol) {
+      if (this._isInvalid)
+        return;
+      parse.call(this, protocol + ':', 'scheme start');
+    },
+
+    get host() {
+      return this._isInvalid ? '' : this._port ?
+          this._host + ':' + this._port : this._host;
+    },
+    set host(host) {
+      if (this._isInvalid || !this._isRelative)
+        return;
+      parse.call(this, host, 'host');
+    },
+
+    get hostname() {
+      return this._host;
+    },
+    set hostname(hostname) {
+      if (this._isInvalid || !this._isRelative)
+        return;
+      parse.call(this, hostname, 'hostname');
+    },
+
+    get port() {
+      return this._port;
+    },
+    set port(port) {
+      if (this._isInvalid || !this._isRelative)
+        return;
+      parse.call(this, port, 'port');
+    },
+
+    get pathname() {
+      return this._isInvalid ? '' : this._isRelative ?
+          '/' + this._path.join('/') : this._schemeData;
+    },
+    set pathname(pathname) {
+      if (this._isInvalid || !this._isRelative)
+        return;
+      this._path = [];
+      parse.call(this, pathname, 'relative path start');
+    },
+
+    get search() {
+      return this._isInvalid || !this._query || '?' == this._query ?
+          '' : this._query;
+    },
+    set search(search) {
+      if (this._isInvalid || !this._isRelative)
+        return;
+      this._query = '?';
+      if ('?' == search[0])
+        search = search.slice(1);
+      parse.call(this, search, 'query');
+    },
+
+    get hash() {
+      return this._isInvalid || !this._fragment || '#' == this._fragment ?
+          '' : this._fragment;
+    },
+    set hash(hash) {
+      if (this._isInvalid)
+        return;
+      this._fragment = '#';
+      if ('#' == hash[0])
+        hash = hash.slice(1);
+      parse.call(this, hash, 'fragment');
+    },
+
+    get origin() {
+      var host;
+      if (this._isInvalid || !this._scheme) {
+        return '';
+      }
+      // javascript: Gecko returns String(""), WebKit/Blink String("null")
+      // Gecko throws error for "data://"
+      // data: Gecko returns "", Blink returns "data://", WebKit returns "null"
+      // Gecko returns String("") for file: mailto:
+      // WebKit/Blink returns String("SCHEME://") for file: mailto:
+      switch (this._scheme) {
+        case 'data':
+        case 'file':
+        case 'javascript':
+        case 'mailto':
+          return 'null';
+      }
+      host = this.host;
+      if (!host) {
+        return '';
+      }
+      return this._scheme + '://' + host;
+    }
+  };
+
+  // Copy over the static methods
+  var OriginalURL = scope.URL;
+  if (OriginalURL) {
+    jURL.createObjectURL = function(blob) {
+      // IE extension allows a second optional options argument.
+      // http://msdn.microsoft.com/en-us/library/ie/hh772302(v=vs.85).aspx
+      return OriginalURL.createObjectURL.apply(OriginalURL, arguments);
+    };
+    jURL.revokeObjectURL = function(url) {
+      OriginalURL.revokeObjectURL(url);
+    };
+  }
+
+  scope.URL = jURL;
+
+})(this);
+
+(function(scope) {
+
+var iterations = 0;
+var callbacks = [];
+var twiddle = document.createTextNode('');
+
+function endOfMicrotask(callback) {
+  twiddle.textContent = iterations++;
+  callbacks.push(callback);
+}
+
+function atEndOfMicrotask() {
+  while (callbacks.length) {
+    callbacks.shift()();
+  }
+}
+
+new (window.MutationObserver || JsMutationObserver)(atEndOfMicrotask)
+  .observe(twiddle, {characterData: true})
+  ;
+
+// exports
+scope.endOfMicrotask = endOfMicrotask;
+// bc 
+Platform.endOfMicrotask = endOfMicrotask;
+
+})(Polymer);
+
+
+(function(scope) {
+
+/**
+ * @class Polymer
+ */
+
+// imports
+var endOfMicrotask = scope.endOfMicrotask;
+
+// logging
+var log = window.WebComponents ? WebComponents.flags.log : {};
+
+// inject style sheet
+var style = document.createElement('style');
+style.textContent = 'template {display: none !important;} /* injected by platform.js */';
+var head = document.querySelector('head');
+head.insertBefore(style, head.firstChild);
+
+
+/**
+ * Force any pending data changes to be observed before 
+ * the next task. Data changes are processed asynchronously but are guaranteed
+ * to be processed, for example, before painting. This method should rarely be 
+ * needed. It does nothing when Object.observe is available; 
+ * when Object.observe is not available, Polymer automatically flushes data 
+ * changes approximately every 1/10 second. 
+ * Therefore, `flush` should only be used when a data mutation should be 
+ * observed sooner than this.
+ * 
+ * @method flush
+ */
+// flush (with logging)
+var flushing;
+function flush() {
+  if (!flushing) {
+    flushing = true;
+    endOfMicrotask(function() {
+      flushing = false;
+      log.data && console.group('flush');
+      Platform.performMicrotaskCheckpoint();
+      log.data && console.groupEnd();
+    });
+  }
+};
+
+// polling dirty checker
+// flush periodically if platform does not have object observe.
+if (!Observer.hasObjectObserve) {
+  var FLUSH_POLL_INTERVAL = 125;
+  window.addEventListener('WebComponentsReady', function() {
+    flush();
+    // watch document visiblity to toggle dirty-checking
+    var visibilityHandler = function() {
+      // only flush if the page is visibile
+      if (document.visibilityState === 'hidden') {
+        if (scope.flushPoll) {
+          clearInterval(scope.flushPoll);
+        }
+      } else {
+        scope.flushPoll = setInterval(flush, FLUSH_POLL_INTERVAL);
+      }
+    };
+    if (typeof document.visibilityState === 'string') {
+      document.addEventListener('visibilitychange', visibilityHandler);
+    }
+    visibilityHandler();
+  });
+} else {
+  // make flush a no-op when we have Object.observe
+  flush = function() {};
+}
+
+if (window.CustomElements && !CustomElements.useNative) {
+  var originalImportNode = Document.prototype.importNode;
+  Document.prototype.importNode = function(node, deep) {
+    var imported = originalImportNode.call(this, node, deep);
+    CustomElements.upgradeAll(imported);
+    return imported;
+  };
+}
+
+// exports
+scope.flush = flush;
+// bc
+Platform.flush = flush;
+
+})(window.Polymer);
+
+
+(function(scope) {
+
+var urlResolver = {
+  resolveDom: function(root, url) {
+    url = url || baseUrl(root);
+    this.resolveAttributes(root, url);
+    this.resolveStyles(root, url);
+    // handle template.content
+    var templates = root.querySelectorAll('template');
+    if (templates) {
+      for (var i = 0, l = templates.length, t; (i < l) && (t = templates[i]); i++) {
+        if (t.content) {
+          this.resolveDom(t.content, url);
+        }
+      }
+    }
+  },
+  resolveTemplate: function(template) {
+    this.resolveDom(template.content, baseUrl(template));
+  },
+  resolveStyles: function(root, url) {
+    var styles = root.querySelectorAll('style');
+    if (styles) {
+      for (var i = 0, l = styles.length, s; (i < l) && (s = styles[i]); i++) {
+        this.resolveStyle(s, url);
+      }
+    }
+  },
+  resolveStyle: function(style, url) {
+    url = url || baseUrl(style);
+    style.textContent = this.resolveCssText(style.textContent, url);
+  },
+  resolveCssText: function(cssText, baseUrl, keepAbsolute) {
+    cssText = replaceUrlsInCssText(cssText, baseUrl, keepAbsolute, CSS_URL_REGEXP);
+    return replaceUrlsInCssText(cssText, baseUrl, keepAbsolute, CSS_IMPORT_REGEXP);
+  },
+  resolveAttributes: function(root, url) {
+    if (root.hasAttributes && root.hasAttributes()) {
+      this.resolveElementAttributes(root, url);
+    }
+    // search for attributes that host urls
+    var nodes = root && root.querySelectorAll(URL_ATTRS_SELECTOR);
+    if (nodes) {
+      for (var i = 0, l = nodes.length, n; (i < l) && (n = nodes[i]); i++) {
+        this.resolveElementAttributes(n, url);
+      }
+    }
+  },
+  resolveElementAttributes: function(node, url) {
+    url = url || baseUrl(node);
+    URL_ATTRS.forEach(function(v) {
+      var attr = node.attributes[v];
+      var value = attr && attr.value;
+      var replacement;
+      if (value && value.search(URL_TEMPLATE_SEARCH) < 0) {
+        if (v === 'style') {
+          replacement = replaceUrlsInCssText(value, url, false, CSS_URL_REGEXP);
+        } else {
+          replacement = resolveRelativeUrl(url, value);
+        }
+        attr.value = replacement;
+      }
+    });
+  }
+};
+
+var CSS_URL_REGEXP = /(url\()([^)]*)(\))/g;
+var CSS_IMPORT_REGEXP = /(@import[\s]+(?!url\())([^;]*)(;)/g;
+var URL_ATTRS = ['href', 'src', 'action', 'style', 'url'];
+var URL_ATTRS_SELECTOR = '[' + URL_ATTRS.join('],[') + ']';
+var URL_TEMPLATE_SEARCH = '{{.*}}';
+var URL_HASH = '#';
+
+function baseUrl(node) {
+  var u = new URL(node.ownerDocument.baseURI);
+  u.search = '';
+  u.hash = '';
+  return u;
+}
+
+function replaceUrlsInCssText(cssText, baseUrl, keepAbsolute, regexp) {
+  return cssText.replace(regexp, function(m, pre, url, post) {
+    var urlPath = url.replace(/["']/g, '');
+    urlPath = resolveRelativeUrl(baseUrl, urlPath, keepAbsolute);
+    return pre + '\'' + urlPath + '\'' + post;
+  });
+}
+
+function resolveRelativeUrl(baseUrl, url, keepAbsolute) {
+  // do not resolve '/' absolute urls
+  if (url && url[0] === '/') {
+    return url;
+  }
+  var u = new URL(url, baseUrl);
+  return keepAbsolute ? u.href : makeDocumentRelPath(u.href);
+}
+
+function makeDocumentRelPath(url) {
+  var root = baseUrl(document.documentElement);
+  var u = new URL(url, root);
+  if (u.host === root.host && u.port === root.port &&
+      u.protocol === root.protocol) {
+    return makeRelPath(root, u);
+  } else {
+    return url;
+  }
+}
+
+// make a relative path from source to target
+function makeRelPath(sourceUrl, targetUrl) {
+  var source = sourceUrl.pathname;
+  var target = targetUrl.pathname;
+  var s = source.split('/');
+  var t = target.split('/');
+  while (s.length && s[0] === t[0]){
+    s.shift();
+    t.shift();
+  }
+  for (var i = 0, l = s.length - 1; i < l; i++) {
+    t.unshift('..');
+  }
+  // empty '#' is discarded but we need to preserve it.
+  var hash = (targetUrl.href.slice(-1) === URL_HASH) ? URL_HASH : targetUrl.hash;
+  return t.join('/') + targetUrl.search + hash;
+}
+
+// exports
+scope.urlResolver = urlResolver;
+
+})(Polymer);
+
+(function(scope) {
+  var endOfMicrotask = Polymer.endOfMicrotask;
+
+  // Generic url loader
+  function Loader(regex) {
+    this.cache = Object.create(null);
+    this.map = Object.create(null);
+    this.requests = 0;
+    this.regex = regex;
+  }
+  Loader.prototype = {
+
+    // TODO(dfreedm): there may be a better factoring here
+    // extract absolute urls from the text (full of relative urls)
+    extractUrls: function(text, base) {
+      var matches = [];
+      var matched, u;
+      while ((matched = this.regex.exec(text))) {
+        u = new URL(matched[1], base);
+        matches.push({matched: matched[0], url: u.href});
+      }
+      return matches;
+    },
+    // take a text blob, a root url, and a callback and load all the urls found within the text
+    // returns a map of absolute url to text
+    process: function(text, root, callback) {
+      var matches = this.extractUrls(text, root);
+
+      // every call to process returns all the text this loader has ever received
+      var done = callback.bind(null, this.map);
+      this.fetch(matches, done);
+    },
+    // build a mapping of url -> text from matches
+    fetch: function(matches, callback) {
+      var inflight = matches.length;
+
+      // return early if there is no fetching to be done
+      if (!inflight) {
+        return callback();
+      }
+
+      // wait for all subrequests to return
+      var done = function() {
+        if (--inflight === 0) {
+          callback();
+        }
+      };
+
+      // start fetching all subrequests
+      var m, req, url;
+      for (var i = 0; i < inflight; i++) {
+        m = matches[i];
+        url = m.url;
+        req = this.cache[url];
+        // if this url has already been requested, skip requesting it again
+        if (!req) {
+          req = this.xhr(url);
+          req.match = m;
+          this.cache[url] = req;
+        }
+        // wait for the request to process its subrequests
+        req.wait(done);
+      }
+    },
+    handleXhr: function(request) {
+      var match = request.match;
+      var url = match.url;
+
+      // handle errors with an empty string
+      var response = request.response || request.responseText || '';
+      this.map[url] = response;
+      this.fetch(this.extractUrls(response, url), request.resolve);
+    },
+    xhr: function(url) {
+      this.requests++;
+      var request = new XMLHttpRequest();
+      request.open('GET', url, true);
+      request.send();
+      request.onerror = request.onload = this.handleXhr.bind(this, request);
+
+      // queue of tasks to run after XHR returns
+      request.pending = [];
+      request.resolve = function() {
+        var pending = request.pending;
+        for(var i = 0; i < pending.length; i++) {
+          pending[i]();
+        }
+        request.pending = null;
+      };
+
+      // if we have already resolved, pending is null, async call the callback
+      request.wait = function(fn) {
+        if (request.pending) {
+          request.pending.push(fn);
+        } else {
+          endOfMicrotask(fn);
+        }
+      };
+
+      return request;
+    }
+  };
+
+  scope.Loader = Loader;
+})(Polymer);
+
+(function(scope) {
+
+var urlResolver = scope.urlResolver;
+var Loader = scope.Loader;
+
+function StyleResolver() {
+  this.loader = new Loader(this.regex);
+}
+StyleResolver.prototype = {
+  regex: /@import\s+(?:url)?["'\(]*([^'"\)]*)['"\)]*;/g,
+  // Recursively replace @imports with the text at that url
+  resolve: function(text, url, callback) {
+    var done = function(map) {
+      callback(this.flatten(text, url, map));
+    }.bind(this);
+    this.loader.process(text, url, done);
+  },
+  // resolve the textContent of a style node
+  resolveNode: function(style, url, callback) {
+    var text = style.textContent;
+    var done = function(text) {
+      style.textContent = text;
+      callback(style);
+    };
+    this.resolve(text, url, done);
+  },
+  // flatten all the @imports to text
+  flatten: function(text, base, map) {
+    var matches = this.loader.extractUrls(text, base);
+    var match, url, intermediate;
+    for (var i = 0; i < matches.length; i++) {
+      match = matches[i];
+      url = match.url;
+      // resolve any css text to be relative to the importer, keep absolute url
+      intermediate = urlResolver.resolveCssText(map[url], url, true);
+      // flatten intermediate @imports
+      intermediate = this.flatten(intermediate, base, map);
+      text = text.replace(match.matched, intermediate);
+    }
+    return text;
+  },
+  loadStyles: function(styles, base, callback) {
+    var loaded=0, l = styles.length;
+    // called in the context of the style
+    function loadedStyle(style) {
+      loaded++;
+      if (loaded === l && callback) {
+        callback();
+      }
+    }
+    for (var i=0, s; (i<l) && (s=styles[i]); i++) {
+      this.resolveNode(s, base, loadedStyle);
+    }
+  }
+};
+
+var styleResolver = new StyleResolver();
+
+// exports
+scope.styleResolver = styleResolver;
+
+})(Polymer);
+
+(function(scope) {
+
+  // copy own properties from 'api' to 'prototype, with name hinting for 'super'
+  function extend(prototype, api) {
+    if (prototype && api) {
+      // use only own properties of 'api'
+      Object.getOwnPropertyNames(api).forEach(function(n) {
+        // acquire property descriptor
+        var pd = Object.getOwnPropertyDescriptor(api, n);
+        if (pd) {
+          // clone property via descriptor
+          Object.defineProperty(prototype, n, pd);
+          // cache name-of-method for 'super' engine
+          if (typeof pd.value == 'function') {
+            // hint the 'super' engine
+            pd.value.nom = n;
+          }
+        }
+      });
+    }
+    return prototype;
+  }
+
+
+  // mixin
+
+  // copy all properties from inProps (et al) to inObj
+  function mixin(inObj/*, inProps, inMoreProps, ...*/) {
+    var obj = inObj || {};
+    for (var i = 1; i < arguments.length; i++) {
+      var p = arguments[i];
+      try {
+        for (var n in p) {
+          copyProperty(n, p, obj);
+        }
+      } catch(x) {
+      }
+    }
+    return obj;
+  }
+
+  // copy property inName from inSource object to inTarget object
+  function copyProperty(inName, inSource, inTarget) {
+    var pd = getPropertyDescriptor(inSource, inName);
+    Object.defineProperty(inTarget, inName, pd);
+  }
+
+  // get property descriptor for inName on inObject, even if
+  // inName exists on some link in inObject's prototype chain
+  function getPropertyDescriptor(inObject, inName) {
+    if (inObject) {
+      var pd = Object.getOwnPropertyDescriptor(inObject, inName);
+      return pd || getPropertyDescriptor(Object.getPrototypeOf(inObject), inName);
+    }
+  }
+
+  // exports
+
+  scope.extend = extend;
+  scope.mixin = mixin;
+
+  // for bc
+  Platform.mixin = mixin;
+
+})(Polymer);
+
+(function(scope) {
+  
+  // usage
+  
+  // invoke cb.call(this) in 100ms, unless the job is re-registered,
+  // which resets the timer
+  // 
+  // this.myJob = this.job(this.myJob, cb, 100)
+  //
+  // returns a job handle which can be used to re-register a job
+
+  var Job = function(inContext) {
+    this.context = inContext;
+    this.boundComplete = this.complete.bind(this)
+  };
+  Job.prototype = {
+    go: function(callback, wait) {
+      this.callback = callback;
+      var h;
+      if (!wait) {
+        h = requestAnimationFrame(this.boundComplete);
+        this.handle = function() {
+          cancelAnimationFrame(h);
+        }
+      } else {
+        h = setTimeout(this.boundComplete, wait);
+        this.handle = function() {
+          clearTimeout(h);
+        }
+      }
+    },
+    stop: function() {
+      if (this.handle) {
+        this.handle();
+        this.handle = null;
+      }
+    },
+    complete: function() {
+      if (this.handle) {
+        this.stop();
+        this.callback.call(this.context);
+      }
+    }
+  };
+  
+  function job(job, callback, wait) {
+    if (job) {
+      job.stop();
+    } else {
+      job = new Job(this);
+    }
+    job.go(callback, wait);
+    return job;
+  }
+  
+  // exports 
+
+  scope.job = job;
+  
+})(Polymer);
+
+(function(scope) {
+
+  // dom polyfill, additions, and utility methods
+
+  var registry = {};
+
+  HTMLElement.register = function(tag, prototype) {
+    registry[tag] = prototype;
+  };
+
+  // get prototype mapped to node <tag>
+  HTMLElement.getPrototypeForTag = function(tag) {
+    var prototype = !tag ? HTMLElement.prototype : registry[tag];
+    // TODO(sjmiles): creating <tag> is likely to have wasteful side-effects
+    return prototype || Object.getPrototypeOf(document.createElement(tag));
+  };
+
+  // we have to flag propagation stoppage for the event dispatcher
+  var originalStopPropagation = Event.prototype.stopPropagation;
+  Event.prototype.stopPropagation = function() {
+    this.cancelBubble = true;
+    originalStopPropagation.apply(this, arguments);
+  };
+  
+  
+  // polyfill DOMTokenList
+  // * add/remove: allow these methods to take multiple classNames
+  // * toggle: add a 2nd argument which forces the given state rather
+  //  than toggling.
+
+  var add = DOMTokenList.prototype.add;
+  var remove = DOMTokenList.prototype.remove;
+  DOMTokenList.prototype.add = function() {
+    for (var i = 0; i < arguments.length; i++) {
+      add.call(this, arguments[i]);
+    }
+  };
+  DOMTokenList.prototype.remove = function() {
+    for (var i = 0; i < arguments.length; i++) {
+      remove.call(this, arguments[i]);
+    }
+  };
+  DOMTokenList.prototype.toggle = function(name, bool) {
+    if (arguments.length == 1) {
+      bool = !this.contains(name);
+    }
+    bool ? this.add(name) : this.remove(name);
+  };
+  DOMTokenList.prototype.switch = function(oldName, newName) {
+    oldName && this.remove(oldName);
+    newName && this.add(newName);
+  };
+
+  // add array() to NodeList, NamedNodeMap, HTMLCollection
+
+  var ArraySlice = function() {
+    return Array.prototype.slice.call(this);
+  };
+
+  var namedNodeMap = (window.NamedNodeMap || window.MozNamedAttrMap || {});
+
+  NodeList.prototype.array = ArraySlice;
+  namedNodeMap.prototype.array = ArraySlice;
+  HTMLCollection.prototype.array = ArraySlice;
+
+  // utility
+
+  function createDOM(inTagOrNode, inHTML, inAttrs) {
+    var dom = typeof inTagOrNode == 'string' ?
+        document.createElement(inTagOrNode) : inTagOrNode.cloneNode(true);
+    dom.innerHTML = inHTML;
+    if (inAttrs) {
+      for (var n in inAttrs) {
+        dom.setAttribute(n, inAttrs[n]);
+      }
+    }
+    return dom;
+  }
+
+  // exports
+
+  scope.createDOM = createDOM;
+
+})(Polymer);
+
+(function(scope) {
+    // super
+
+    // `arrayOfArgs` is an optional array of args like one might pass
+    // to `Function.apply`
+
+    // TODO(sjmiles):
+    //    $super must be installed on an instance or prototype chain
+    //    as `super`, and invoked via `this`, e.g.
+    //      `this.super();`
+
+    //    will not work if function objects are not unique, for example,
+    //    when using mixins.
+    //    The memoization strategy assumes each function exists on only one 
+    //    prototype chain i.e. we use the function object for memoizing)
+    //    perhaps we can bookkeep on the prototype itself instead
+    function $super(arrayOfArgs) {
+      // since we are thunking a method call, performance is important here: 
+      // memoize all lookups, once memoized the fast path calls no other 
+      // functions
+      //
+      // find the caller (cannot be `strict` because of 'caller')
+      var caller = $super.caller;
+      // memoized 'name of method' 
+      var nom = caller.nom;
+      // memoized next implementation prototype
+      var _super = caller._super;
+      if (!_super) {
+        if (!nom) {
+          nom = caller.nom = nameInThis.call(this, caller);
+        }
+        if (!nom) {
+          console.warn('called super() on a method not installed declaratively (has no .nom property)');
+        }
+        // super prototype is either cached or we have to find it
+        // by searching __proto__ (at the 'top')
+        // invariant: because we cache _super on fn below, we never reach 
+        // here from inside a series of calls to super(), so it's ok to 
+        // start searching from the prototype of 'this' (at the 'top')
+        // we must never memoize a null super for this reason
+        _super = memoizeSuper(caller, nom, getPrototypeOf(this));
+      }
+      // our super function
+      var fn = _super[nom];
+      if (fn) {
+        // memoize information so 'fn' can call 'super'
+        if (!fn._super) {
+          // must not memoize null, or we lose our invariant above
+          memoizeSuper(fn, nom, _super);
+        }
+        // invoke the inherited method
+        // if 'fn' is not function valued, this will throw
+        return fn.apply(this, arrayOfArgs || []);
+      }
+    }
+
+    function nameInThis(value) {
+      var p = this.__proto__;
+      while (p && p !== HTMLElement.prototype) {
+        // TODO(sjmiles): getOwnPropertyNames is absurdly expensive
+        var n$ = Object.getOwnPropertyNames(p);
+        for (var i=0, l=n$.length, n; i<l && (n=n$[i]); i++) {
+          var d = Object.getOwnPropertyDescriptor(p, n);
+          if (typeof d.value === 'function' && d.value === value) {
+            return n;
+          }
+        }
+        p = p.__proto__;
+      }
+    }
+
+    function memoizeSuper(method, name, proto) {
+      // find and cache next prototype containing `name`
+      // we need the prototype so we can do another lookup
+      // from here
+      var s = nextSuper(proto, name, method);
+      if (s[name]) {
+        // `s` is a prototype, the actual method is `s[name]`
+        // tag super method with it's name for quicker lookups
+        s[name].nom = name;
+      }
+      return method._super = s;
+    }
+
+    function nextSuper(proto, name, caller) {
+      // look for an inherited prototype that implements name
+      while (proto) {
+        if ((proto[name] !== caller) && proto[name]) {
+          return proto;
+        }
+        proto = getPrototypeOf(proto);
+      }
+      // must not return null, or we lose our invariant above
+      // in this case, a super() call was invoked where no superclass
+      // method exists
+      // TODO(sjmiles): thow an exception?
+      return Object;
+    }
+
+    // NOTE: In some platforms (IE10) the prototype chain is faked via 
+    // __proto__. Therefore, always get prototype via __proto__ instead of
+    // the more standard Object.getPrototypeOf.
+    function getPrototypeOf(prototype) {
+      return prototype.__proto__;
+    }
+
+    // utility function to precompute name tags for functions
+    // in a (unchained) prototype
+    function hintSuper(prototype) {
+      // tag functions with their prototype name to optimize
+      // super call invocations
+      for (var n in prototype) {
+        var pd = Object.getOwnPropertyDescriptor(prototype, n);
+        if (pd && typeof pd.value === 'function') {
+          pd.value.nom = n;
+        }
+      }
+    }
+
+    // exports
+
+    scope.super = $super;
+
+})(Polymer);
+
+(function(scope) {
+
+  function noopHandler(value) {
+    return value;
+  }
+
+  // helper for deserializing properties of various types to strings
+  var typeHandlers = {
+    string: noopHandler,
+    'undefined': noopHandler,
+    date: function(value) {
+      return new Date(Date.parse(value) || Date.now());
+    },
+    boolean: function(value) {
+      if (value === '') {
+        return true;
+      }
+      return value === 'false' ? false : !!value;
+    },
+    number: function(value) {
+      var n = parseFloat(value);
+      // hex values like "0xFFFF" parseFloat as 0
+      if (n === 0) {
+        n = parseInt(value);
+      }
+      return isNaN(n) ? value : n;
+      // this code disabled because encoded values (like "0xFFFF")
+      // do not round trip to their original format
+      //return (String(floatVal) === value) ? floatVal : value;
+    },
+    object: function(value, currentValue) {
+      if (currentValue === null) {
+        return value;
+      }
+      try {
+        // If the string is an object, we can parse is with the JSON library.
+        // include convenience replace for single-quotes. If the author omits
+        // quotes altogether, parse will fail.
+        return JSON.parse(value.replace(/'/g, '"'));
+      } catch(e) {
+        // The object isn't valid JSON, return the raw value
+        return value;
+      }
+    },
+    // avoid deserialization of functions
+    'function': function(value, currentValue) {
+      return currentValue;
+    }
+  };
+
+  function deserializeValue(value, currentValue) {
+    // attempt to infer type from default value
+    var inferredType = typeof currentValue;
+    // invent 'date' type value for Date
+    if (currentValue instanceof Date) {
+      inferredType = 'date';
+    }
+    // delegate deserialization via type string
+    return typeHandlers[inferredType](value, currentValue);
+  }
+
+  // exports
+
+  scope.deserializeValue = deserializeValue;
+
+})(Polymer);
+
+(function(scope) {
+
+  // imports
+
+  var extend = scope.extend;
+
+  // module
+
+  var api = {};
+
+  api.declaration = {};
+  api.instance = {};
+
+  api.publish = function(apis, prototype) {
+    for (var n in apis) {
+      extend(prototype, apis[n]);
+    }
+  };
+
+  // exports
+
+  scope.api = api;
+
+})(Polymer);
+
+(function(scope) {
+
+  /**
+   * @class polymer-base
+   */
+
+  var utils = {
+
+    /**
+      * Invokes a function asynchronously. The context of the callback
+      * function is bound to 'this' automatically. Returns a handle which may 
+      * be passed to <a href="#cancelAsync">cancelAsync</a> to cancel the 
+      * asynchronous call.
+      *
+      * @method async
+      * @param {Function|String} method
+      * @param {any|Array} args
+      * @param {number} timeout
+      */
+    async: function(method, args, timeout) {
+      // when polyfilling Object.observe, ensure changes 
+      // propagate before executing the async method
+      Polymer.flush();
+      // second argument to `apply` must be an array
+      args = (args && args.length) ? args : [args];
+      // function to invoke
+      var fn = function() {
+        (this[method] || method).apply(this, args);
+      }.bind(this);
+      // execute `fn` sooner or later
+      var handle = timeout ? setTimeout(fn, timeout) :
+          requestAnimationFrame(fn);
+      // NOTE: switch on inverting handle to determine which time is used.
+      return timeout ? handle : ~handle;
+    },
+
+    /**
+      * Cancels a pending callback that was scheduled via 
+      * <a href="#async">async</a>. 
+      *
+      * @method cancelAsync
+      * @param {handle} handle Handle of the `async` to cancel.
+      */
+    cancelAsync: function(handle) {
+      if (handle < 0) {
+        cancelAnimationFrame(~handle);
+      } else {
+        clearTimeout(handle);
+      }
+    },
+
+    /**
+      * Fire an event.
+      *
+      * @method fire
+      * @returns {Object} event
+      * @param {string} type An event name.
+      * @param {any} detail
+      * @param {Node} onNode Target node.
+      * @param {Boolean} bubbles Set false to prevent bubbling, defaults to true
+      * @param {Boolean} cancelable Set false to prevent cancellation, defaults to true
+      */
+    fire: function(type, detail, onNode, bubbles, cancelable) {
+      var node = onNode || this;
+      var detail = detail === null || detail === undefined ? {} : detail;
+      var event = new CustomEvent(type, {
+        bubbles: bubbles !== undefined ? bubbles : true,
+        cancelable: cancelable !== undefined ? cancelable : true,
+        detail: detail
+      });
+      node.dispatchEvent(event);
+      return event;
+    },
+
+    /**
+      * Fire an event asynchronously.
+      *
+      * @method asyncFire
+      * @param {string} type An event name.
+      * @param detail
+      * @param {Node} toNode Target node.
+      */
+    asyncFire: function(/*inType, inDetail*/) {
+      this.async("fire", arguments);
+    },
+
+    /**
+      * Remove class from old, add class to anew, if they exist.
+      *
+      * @param classFollows
+      * @param anew A node.
+      * @param old A node
+      * @param className
+      */
+    classFollows: function(anew, old, className) {
+      if (old) {
+        old.classList.remove(className);
+      }
+      if (anew) {
+        anew.classList.add(className);
+      }
+    },
+
+    /**
+      * Inject HTML which contains markup bound to this element into
+      * a target element (replacing target element content).
+      *
+      * @param String html to inject
+      * @param Element target element
+      */
+    injectBoundHTML: function(html, element) {
+      var template = document.createElement('template');
+      template.innerHTML = html;
+      var fragment = this.instanceTemplate(template);
+      if (element) {
+        element.textContent = '';
+        element.appendChild(fragment);
+      }
+      return fragment;
+    }
+  };
+
+  // no-operation function for handy stubs
+  var nop = function() {};
+
+  // null-object for handy stubs
+  var nob = {};
+
+  // deprecated
+
+  utils.asyncMethod = utils.async;
+
+  // exports
+
+  scope.api.instance.utils = utils;
+  scope.nop = nop;
+  scope.nob = nob;
+
+})(Polymer);
+
+(function(scope) {
+
+  // imports
+
+  var log = window.WebComponents ? WebComponents.flags.log : {};
+  var EVENT_PREFIX = 'on-';
+
+  // instance events api
+  var events = {
+    // read-only
+    EVENT_PREFIX: EVENT_PREFIX,
+    // event listeners on host
+    addHostListeners: function() {
+      var events = this.eventDelegates;
+      log.events && (Object.keys(events).length > 0) && console.log('[%s] addHostListeners:', this.localName, events);
+      // NOTE: host events look like bindings but really are not;
+      // (1) we don't want the attribute to be set and (2) we want to support
+      // multiple event listeners ('host' and 'instance') and Node.bind
+      // by default supports 1 thing being bound.
+      for (var type in events) {
+        var methodName = events[type];
+        PolymerGestures.addEventListener(this, type, this.element.getEventHandler(this, this, methodName));
+      }
+    },
+    // call 'method' or function method on 'obj' with 'args', if the method exists
+    dispatchMethod: function(obj, method, args) {
+      if (obj) {
+        log.events && console.group('[%s] dispatch [%s]', obj.localName, method);
+        var fn = typeof method === 'function' ? method : obj[method];
+        if (fn) {
+          fn[args ? 'apply' : 'call'](obj, args);
+        }
+        log.events && console.groupEnd();
+        // NOTE: dirty check right after calling method to ensure 
+        // changes apply quickly; in a very complicated app using high 
+        // frequency events, this can be a perf concern; in this case,
+        // imperative handlers can be used to avoid flushing.
+        Polymer.flush();
+      }
+    }
+  };
+
+  // exports
+
+  scope.api.instance.events = events;
+
+  /**
+   * @class Polymer
+   */
+
+  /**
+   * Add a gesture aware event handler to the given `node`. Can be used 
+   * in place of `element.addEventListener` and ensures gestures will function
+   * as expected on mobile platforms. Please note that Polymer's declarative
+   * event handlers include this functionality by default.
+   * 
+   * @method addEventListener
+   * @param {Node} node node on which to listen
+   * @param {String} eventType name of the event
+   * @param {Function} handlerFn event handler function
+   * @param {Boolean} capture set to true to invoke event capturing
+   * @type Function
+   */
+  // alias PolymerGestures event listener logic
+  scope.addEventListener = function(node, eventType, handlerFn, capture) {
+    PolymerGestures.addEventListener(wrap(node), eventType, handlerFn, capture);
+  };
+
+  /**
+   * Remove a gesture aware event handler on the given `node`. To remove an
+   * event listener, the exact same arguments are required that were passed
+   * to `Polymer.addEventListener`.
+   * 
+   * @method removeEventListener
+   * @param {Node} node node on which to listen
+   * @param {String} eventType name of the event
+   * @param {Function} handlerFn event handler function
+   * @param {Boolean} capture set to true to invoke event capturing
+   * @type Function
+   */
+  scope.removeEventListener = function(node, eventType, handlerFn, capture) {
+    PolymerGestures.removeEventListener(wrap(node), eventType, handlerFn, capture);
+  };
+
+})(Polymer);
+
+(function(scope) {
+
+  // instance api for attributes
+
+  var attributes = {
+    // copy attributes defined in the element declaration to the instance
+    // e.g. <polymer-element name="x-foo" tabIndex="0"> tabIndex is copied
+    // to the element instance here.
+    copyInstanceAttributes: function () {
+      var a$ = this._instanceAttributes;
+      for (var k in a$) {
+        if (!this.hasAttribute(k)) {
+          this.setAttribute(k, a$[k]);
+        }
+      }
+    },
+    // for each attribute on this, deserialize value to property as needed
+    takeAttributes: function() {
+      // if we have no publish lookup table, we have no attributes to take
+      // TODO(sjmiles): ad hoc
+      if (this._publishLC) {
+        for (var i=0, a$=this.attributes, l=a$.length, a; (a=a$[i]) && i<l; i++) {
+          this.attributeToProperty(a.name, a.value);
+        }
+      }
+    },
+    // if attribute 'name' is mapped to a property, deserialize
+    // 'value' into that property
+    attributeToProperty: function(name, value) {
+      // try to match this attribute to a property (attributes are
+      // all lower-case, so this is case-insensitive search)
+      var name = this.propertyForAttribute(name);
+      if (name) {
+        // filter out 'mustached' values, these are to be
+        // replaced with bound-data and are not yet values
+        // themselves
+        if (value && value.search(scope.bindPattern) >= 0) {
+          return;
+        }
+        // get original value
+        var currentValue = this[name];
+        // deserialize Boolean or Number values from attribute
+        var value = this.deserializeValue(value, currentValue);
+        // only act if the value has changed
+        if (value !== currentValue) {
+          // install new value (has side-effects)
+          this[name] = value;
+        }
+      }
+    },
+    // return the published property matching name, or undefined
+    propertyForAttribute: function(name) {
+      var match = this._publishLC && this._publishLC[name];
+      return match;
+    },
+    // convert representation of `stringValue` based on type of `currentValue`
+    deserializeValue: function(stringValue, currentValue) {
+      return scope.deserializeValue(stringValue, currentValue);
+    },
+    // convert to a string value based on the type of `inferredType`
+    serializeValue: function(value, inferredType) {
+      if (inferredType === 'boolean') {
+        return value ? '' : undefined;
+      } else if (inferredType !== 'object' && inferredType !== 'function'
+          && value !== undefined) {
+        return value;
+      }
+    },
+    // serializes `name` property value and updates the corresponding attribute
+    // note that reflection is opt-in.
+    reflectPropertyToAttribute: function(name) {
+      var inferredType = typeof this[name];
+      // try to intelligently serialize property value
+      var serializedValue = this.serializeValue(this[name], inferredType);
+      // boolean properties must reflect as boolean attributes
+      if (serializedValue !== undefined) {
+        this.setAttribute(name, serializedValue);
+        // TODO(sorvell): we should remove attr for all properties
+        // that have undefined serialization; however, we will need to
+        // refine the attr reflection system to achieve this; pica, for example,
+        // relies on having inferredType object properties not removed as
+        // attrs.
+      } else if (inferredType === 'boolean') {
+        this.removeAttribute(name);
+      }
+    }
+  };
+
+  // exports
+
+  scope.api.instance.attributes = attributes;
+
+})(Polymer);
+
+(function(scope) {
+
+  /**
+   * @class polymer-base
+   */
+
+  // imports
+
+  var log = window.WebComponents ? WebComponents.flags.log : {};
+
+  // magic words
+
+  var OBSERVE_SUFFIX = 'Changed';
+
+  // element api
+
+  var empty = [];
+
+  var updateRecord = {
+    object: undefined,
+    type: 'update',
+    name: undefined,
+    oldValue: undefined
+  };
+
+  var numberIsNaN = Number.isNaN || function(value) {
+    return typeof value === 'number' && isNaN(value);
+  };
+
+  function areSameValue(left, right) {
+    if (left === right)
+      return left !== 0 || 1 / left === 1 / right;
+    if (numberIsNaN(left) && numberIsNaN(right))
+      return true;
+    return left !== left && right !== right;
+  }
+
+  // capture A's value if B's value is null or undefined,
+  // otherwise use B's value
+  function resolveBindingValue(oldValue, value) {
+    if (value === undefined && oldValue === null) {
+      return value;
+    }
+    return (value === null || value === undefined) ? oldValue : value;
+  }
+
+  var properties = {
+
+    // creates a CompoundObserver to observe property changes
+    // NOTE, this is only done there are any properties in the `observe` object
+    createPropertyObserver: function() {
+      var n$ = this._observeNames;
+      if (n$ && n$.length) {
+        var o = this._propertyObserver = new CompoundObserver(true);
+        this.registerObserver(o);
+        // TODO(sorvell): may not be kosher to access the value here (this[n]);
+        // previously we looked at the descriptor on the prototype
+        // this doesn't work for inheritance and not for accessors without
+        // a value property
+        for (var i=0, l=n$.length, n; (i<l) && (n=n$[i]); i++) {
+          o.addPath(this, n);
+          this.observeArrayValue(n, this[n], null);
+        }
+      }
+    },
+
+    // start observing property changes
+    openPropertyObserver: function() {
+      if (this._propertyObserver) {
+        this._propertyObserver.open(this.notifyPropertyChanges, this);
+      }
+    },
+
+    // handler for property changes; routes changes to observing methods
+    // note: array valued properties are observed for array splices
+    notifyPropertyChanges: function(newValues, oldValues, paths) {
+      var name, method, called = {};
+      for (var i in oldValues) {
+        // note: paths is of form [object, path, object, path]
+        name = paths[2 * i + 1];
+        method = this.observe[name];
+        if (method) {
+          var ov = oldValues[i], nv = newValues[i];
+          // observes the value if it is an array
+          this.observeArrayValue(name, nv, ov);
+          if (!called[method]) {
+            // only invoke change method if one of ov or nv is not (undefined | null)
+            if ((ov !== undefined && ov !== null) || (nv !== undefined && nv !== null)) {
+              called[method] = true;
+              // TODO(sorvell): call method with the set of values it's expecting;
+              // e.g. 'foo bar': 'invalidate' expects the new and old values for
+              // foo and bar. Currently we give only one of these and then
+              // deliver all the arguments.
+              this.invokeMethod(method, [ov, nv, arguments]);
+            }
+          }
+        }
+      }
+    },
+
+    // call method iff it exists.
+    invokeMethod: function(method, args) {
+      var fn = this[method] || method;
+      if (typeof fn === 'function') {
+        fn.apply(this, args);
+      }
+    },
+
+    /**
+     * Force any pending property changes to synchronously deliver to
+     * handlers specified in the `observe` object.
+     * Note, normally changes are processed at microtask time.
+     *
+     * @method deliverChanges
+     */
+    deliverChanges: function() {
+      if (this._propertyObserver) {
+        this._propertyObserver.deliver();
+      }
+    },
+
+    observeArrayValue: function(name, value, old) {
+      // we only care if there are registered side-effects
+      var callbackName = this.observe[name];
+      if (callbackName) {
+        // if we are observing the previous value, stop
+        if (Array.isArray(old)) {
+          log.observe && console.log('[%s] observeArrayValue: unregister observer [%s]', this.localName, name);
+          this.closeNamedObserver(name + '__array');
+        }
+        // if the new value is an array, being observing it
+        if (Array.isArray(value)) {
+          log.observe && console.log('[%s] observeArrayValue: register observer [%s]', this.localName, name, value);
+          var observer = new ArrayObserver(value);
+          observer.open(function(splices) {
+            this.invokeMethod(callbackName, [splices]);
+          }, this);
+          this.registerNamedObserver(name + '__array', observer);
+        }
+      }
+    },
+
+    emitPropertyChangeRecord: function(name, value, oldValue) {
+      var object = this;
+      if (areSameValue(value, oldValue)) {
+        return;
+      }
+      // invoke property change side effects
+      this._propertyChanged(name, value, oldValue);
+      // emit change record
+      if (!Observer.hasObjectObserve) {
+        return;
+      }
+      var notifier = this._objectNotifier;
+      if (!notifier) {
+        notifier = this._objectNotifier = Object.getNotifier(this);
+      }
+      updateRecord.object = this;
+      updateRecord.name = name;
+      updateRecord.oldValue = oldValue;
+      notifier.notify(updateRecord);
+    },
+
+    _propertyChanged: function(name, value, oldValue) {
+      if (this.reflect[name]) {
+        this.reflectPropertyToAttribute(name);
+      }
+    },
+
+    // creates a property binding (called via bind) to a published property.
+    bindProperty: function(property, observable, oneTime) {
+      if (oneTime) {
+        this[property] = observable;
+        return;
+      }
+      var computed = this.element.prototype.computed;
+      // Binding an "out-only" value to a computed property. Note that
+      // since this observer isn't opened, it doesn't need to be closed on
+      // cleanup.
+      if (computed && computed[property]) {
+        var privateComputedBoundValue = property + 'ComputedBoundObservable_';
+        this[privateComputedBoundValue] = observable;
+        return;
+      }
+      return this.bindToAccessor(property, observable, resolveBindingValue);
+    },
+
+    // NOTE property `name` must be published. This makes it an accessor.
+    bindToAccessor: function(name, observable, resolveFn) {
+      var privateName = name + '_';
+      var privateObservable  = name + 'Observable_';
+      // Present for properties which are computed and published and have a
+      // bound value.
+      var privateComputedBoundValue = name + 'ComputedBoundObservable_';
+      this[privateObservable] = observable;
+      var oldValue = this[privateName];
+      // observable callback
+      var self = this;
+      function updateValue(value, oldValue) {
+        self[privateName] = value;
+        var setObserveable = self[privateComputedBoundValue];
+        if (setObserveable && typeof setObserveable.setValue == 'function') {
+          setObserveable.setValue(value);
+        }
+        self.emitPropertyChangeRecord(name, value, oldValue);
+      }
+      // resolve initial value
+      var value = observable.open(updateValue);
+      if (resolveFn && !areSameValue(oldValue, value)) {
+        var resolvedValue = resolveFn(oldValue, value);
+        if (!areSameValue(value, resolvedValue)) {
+          value = resolvedValue;
+          if (observable.setValue) {
+            observable.setValue(value);
+          }
+        }
+      }
+      updateValue(value, oldValue);
+      // register and return observable
+      var observer = {
+        close: function() {
+          observable.close();
+          self[privateObservable] = undefined;
+          self[privateComputedBoundValue] = undefined;
+        }
+      };
+      this.registerObserver(observer);
+      return observer;
+    },
+
+    createComputedProperties: function() {
+      if (!this._computedNames) {
+        return;
+      }
+      for (var i = 0; i < this._computedNames.length; i++) {
+        var name = this._computedNames[i];
+        var expressionText = this.computed[name];
+        try {
+          var expression = PolymerExpressions.getExpression(expressionText);
+          var observable = expression.getBinding(this, this.element.syntax);
+          this.bindToAccessor(name, observable);
+        } catch (ex) {
+          console.error('Failed to create computed property', ex);
+        }
+      }
+    },
+
+    // property bookkeeping
+    registerObserver: function(observer) {
+      if (!this._observers) {
+        this._observers = [observer];
+        return;
+      }
+      this._observers.push(observer);
+    },
+
+    closeObservers: function() {
+      if (!this._observers) {
+        return;
+      }
+      // observer array items are arrays of observers.
+      var observers = this._observers;
+      for (var i = 0; i < observers.length; i++) {
+        var observer = observers[i];
+        if (observer && typeof observer.close == 'function') {
+          observer.close();
+        }
+      }
+      this._observers = [];
+    },
+
+    // bookkeeping observers for memory management
+    registerNamedObserver: function(name, observer) {
+      var o$ = this._namedObservers || (this._namedObservers = {});
+      o$[name] = observer;
+    },
+
+    closeNamedObserver: function(name) {
+      var o$ = this._namedObservers;
+      if (o$ && o$[name]) {
+        o$[name].close();
+        o$[name] = null;
+        return true;
+      }
+    },
+
+    closeNamedObservers: function() {
+      if (this._namedObservers) {
+        for (var i in this._namedObservers) {
+          this.closeNamedObserver(i);
+        }
+        this._namedObservers = {};
+      }
+    }
+
+  };
+
+  // logging
+  var LOG_OBSERVE = '[%s] watching [%s]';
+  var LOG_OBSERVED = '[%s#%s] watch: [%s] now [%s] was [%s]';
+  var LOG_CHANGED = '[%s#%s] propertyChanged: [%s] now [%s] was [%s]';
+
+  // exports
+
+  scope.api.instance.properties = properties;
+
+})(Polymer);
+
+(function(scope) {
+
+  /**
+   * @class polymer-base
+   */
+
+  // imports
+
+  var log = window.WebComponents ? WebComponents.flags.log : {};
+
+  // element api supporting mdv
+  var mdv = {
+
+    /**
+     * Creates dom cloned from the given template, instantiating bindings
+     * with this element as the template model and `PolymerExpressions` as the
+     * binding delegate.
+     *
+     * @method instanceTemplate
+     * @param {Template} template source template from which to create dom.
+     */
+    instanceTemplate: function(template) {
+      // ensure template is decorated (lets' things like <tr template ...> work)
+      HTMLTemplateElement.decorate(template);
+      // ensure a default bindingDelegate
+      var syntax = this.syntax || (!template.bindingDelegate &&
+          this.element.syntax);
+      var dom = template.createInstance(this, syntax);
+      var observers = dom.bindings_;
+      for (var i = 0; i < observers.length; i++) {
+        this.registerObserver(observers[i]);
+      }
+      return dom;
+    },
+
+    // Called by TemplateBinding/NodeBind to setup a binding to the given
+    // property. It's overridden here to support property bindings
+    // in addition to attribute bindings that are supported by default.
+    bind: function(name, observable, oneTime) {
+      var property = this.propertyForAttribute(name);
+      if (!property) {
+        // TODO(sjmiles): this mixin method must use the special form
+        // of `super` installed by `mixinMethod` in declaration/prototype.js
+        return this.mixinSuper(arguments);
+      } else {
+        // use n-way Polymer binding
+        var observer = this.bindProperty(property, observable, oneTime);
+        // NOTE: reflecting binding information is typically required only for
+        // tooling. It has a performance cost so it's opt-in in Node.bind.
+        if (Platform.enableBindingsReflection && observer) {
+          observer.path = observable.path_;
+          this._recordBinding(property, observer);
+        }
+        if (this.reflect[property]) {
+          this.reflectPropertyToAttribute(property);
+        }
+        return observer;
+      }
+    },
+
+    _recordBinding: function(name, observer) {
+      this.bindings_ = this.bindings_ || {};
+      this.bindings_[name] = observer;
+    },
+
+    // Called by TemplateBinding when all bindings on an element have been 
+    // executed. This signals that all element inputs have been gathered
+    // and it's safe to ready the element, create shadow-root and start
+    // data-observation.
+    bindFinished: function() {
+      this.makeElementReady();
+    },
+
+    // called at detached time to signal that an element's bindings should be
+    // cleaned up. This is done asynchronously so that users have the chance
+    // to call `cancelUnbindAll` to prevent unbinding.
+    asyncUnbindAll: function() {
+      if (!this._unbound) {
+        log.unbind && console.log('[%s] asyncUnbindAll', this.localName);
+        this._unbindAllJob = this.job(this._unbindAllJob, this.unbindAll, 0);
+      }
+    },
+    
+    /**
+     * This method should rarely be used and only if 
+     * <a href="#cancelUnbindAll">`cancelUnbindAll`</a> has been called to 
+     * prevent element unbinding. In this case, the element's bindings will 
+     * not be automatically cleaned up and it cannot be garbage collected 
+     * by the system. If memory pressure is a concern or a 
+     * large amount of elements need to be managed in this way, `unbindAll`
+     * can be called to deactivate the element's bindings and allow its 
+     * memory to be reclaimed.
+     *
+     * @method unbindAll
+     */
+    unbindAll: function() {
+      if (!this._unbound) {
+        this.closeObservers();
+        this.closeNamedObservers();
+        this._unbound = true;
+      }
+    },
+
+    /**
+     * Call in `detached` to prevent the element from unbinding when it is 
+     * detached from the dom. The element is unbound as a cleanup step that 
+     * allows its memory to be reclaimed. 
+     * If `cancelUnbindAll` is used, consider calling 
+     * <a href="#unbindAll">`unbindAll`</a> when the element is no longer
+     * needed. This will allow its memory to be reclaimed.
+     * 
+     * @method cancelUnbindAll
+     */
+    cancelUnbindAll: function() {
+      if (this._unbound) {
+        log.unbind && console.warn('[%s] already unbound, cannot cancel unbindAll', this.localName);
+        return;
+      }
+      log.unbind && console.log('[%s] cancelUnbindAll', this.localName);
+      if (this._unbindAllJob) {
+        this._unbindAllJob = this._unbindAllJob.stop();
+      }
+    }
+
+  };
+
+  function unbindNodeTree(node) {
+    forNodeTree(node, _nodeUnbindAll);
+  }
+
+  function _nodeUnbindAll(node) {
+    node.unbindAll();
+  }
+
+  function forNodeTree(node, callback) {
+    if (node) {
+      callback(node);
+      for (var child = node.firstChild; child; child = child.nextSibling) {
+        forNodeTree(child, callback);
+      }
+    }
+  }
+
+  var mustachePattern = /\{\{([^{}]*)}}/;
+
+  // exports
+
+  scope.bindPattern = mustachePattern;
+  scope.api.instance.mdv = mdv;
+
+})(Polymer);
+
+(function(scope) {
+
+  /**
+   * Common prototype for all Polymer Elements.
+   * 
+   * @class polymer-base
+   * @homepage polymer.github.io
+   */
+  var base = {
+    /**
+     * Tags this object as the canonical Base prototype.
+     *
+     * @property PolymerBase
+     * @type boolean
+     * @default true
+     */
+    PolymerBase: true,
+
+    /**
+     * Debounce signals. 
+     * 
+     * Call `job` to defer a named signal, and all subsequent matching signals, 
+     * until a wait time has elapsed with no new signal.
+     * 
+     *     debouncedClickAction: function(e) {
+     *       // processClick only when it's been 100ms since the last click
+     *       this.job('click', function() {
+     *        this.processClick;
+     *       }, 100);
+     *     }
+     *
+     * @method job
+     * @param String {String} job A string identifier for the job to debounce.
+     * @param Function {Function} callback A function that is called (with `this` context) when the wait time elapses.
+     * @param Number {Number} wait Time in milliseconds (ms) after the last signal that must elapse before invoking `callback`
+     * @type Handle
+     */
+    job: function(job, callback, wait) {
+      if (typeof job === 'string') {
+        var n = '___' + job;
+        this[n] = Polymer.job.call(this, this[n], callback, wait);
+      } else {
+        // TODO(sjmiles): suggest we deprecate this call signature
+        return Polymer.job.call(this, job, callback, wait);
+      }
+    },
+
+    /**
+     * Invoke a superclass method. 
+     * 
+     * Use `super()` to invoke the most recently overridden call to the 
+     * currently executing function. 
+     * 
+     * To pass arguments through, use the literal `arguments` as the parameter 
+     * to `super()`.
+     *
+     *     nextPageAction: function(e) {
+     *       // invoke the superclass version of `nextPageAction`
+     *       this.super(arguments); 
+     *     }
+     *
+     * To pass custom arguments, arrange them in an array.
+     *
+     *     appendSerialNo: function(value, serial) {
+     *       // prefix the superclass serial number with our lot # before
+     *       // invoking the superlcass
+     *       return this.super([value, this.lotNo + serial])
+     *     }
+     *
+     * @method super
+     * @type Any
+     * @param {args) An array of arguments to use when calling the superclass method, or null.
+     */
+    super: Polymer.super,
+
+    /**
+     * Lifecycle method called when the element is instantiated.
+     * 
+     * Override `created` to perform custom create-time tasks. No need to call 
+     * super-class `created` unless you are extending another Polymer element.
+     * Created is called before the element creates `shadowRoot` or prepares
+     * data-observation.
+     * 
+     * @method created
+     * @type void
+     */
+    created: function() {
+    },
+
+    /**
+     * Lifecycle method called when the element has populated it's `shadowRoot`,
+     * prepared data-observation, and made itself ready for API interaction.
+     * 
+     * @method ready
+     * @type void
+     */
+    ready: function() {
+    },
+
+    /**
+     * Low-level lifecycle method called as part of standard Custom Elements
+     * operation. Polymer implements this method to provide basic default 
+     * functionality. For custom create-time tasks, implement `created` 
+     * instead, which is called immediately after `createdCallback`. 
+     * 
+     * @method createdCallback
+     */
+    createdCallback: function() {
+      if (this.templateInstance && this.templateInstance.model) {
+        console.warn('Attributes on ' + this.localName + ' were data bound ' +
+            'prior to Polymer upgrading the element. This may result in ' +
+            'incorrect binding types.');
+      }
+      this.created();
+      this.prepareElement();
+      if (!this.ownerDocument.isStagingDocument) {
+        this.makeElementReady();
+      }
+    },
+
+    // system entry point, do not override
+    prepareElement: function() {
+      if (this._elementPrepared) {
+        console.warn('Element already prepared', this.localName);
+        return;
+      }
+      this._elementPrepared = true;
+      // storage for shadowRoots info
+      this.shadowRoots = {};
+      // install property observers
+      this.createPropertyObserver();
+      this.openPropertyObserver();
+      // install boilerplate attributes
+      this.copyInstanceAttributes();
+      // process input attributes
+      this.takeAttributes();
+      // add event listeners
+      this.addHostListeners();
+    },
+
+    // system entry point, do not override
+    makeElementReady: function() {
+      if (this._readied) {
+        return;
+      }
+      this._readied = true;
+      this.createComputedProperties();
+      this.parseDeclarations(this.__proto__);
+      // NOTE: Support use of the `unresolved` attribute to help polyfill
+      // custom elements' `:unresolved` feature.
+      this.removeAttribute('unresolved');
+      // user entry point
+      this.ready();
+    },
+
+    /**
+     * Low-level lifecycle method called as part of standard Custom Elements
+     * operation. Polymer implements this method to provide basic default 
+     * functionality. For custom tasks in your element, implement `attributeChanged` 
+     * instead, which is called immediately after `attributeChangedCallback`. 
+     * 
+     * @method attributeChangedCallback
+     */
+    attributeChangedCallback: function(name, oldValue) {
+      // TODO(sjmiles): adhoc filter
+      if (name !== 'class' && name !== 'style') {
+        this.attributeToProperty(name, this.getAttribute(name));
+      }
+      if (this.attributeChanged) {
+        this.attributeChanged.apply(this, arguments);
+      }
+    },
+
+    /**
+     * Low-level lifecycle method called as part of standard Custom Elements
+     * operation. Polymer implements this method to provide basic default 
+     * functionality. For custom create-time tasks, implement `attached` 
+     * instead, which is called immediately after `attachedCallback`. 
+     * 
+     * @method attachedCallback
+     */
+     attachedCallback: function() {
+      // when the element is attached, prevent it from unbinding.
+      this.cancelUnbindAll();
+      // invoke user action
+      if (this.attached) {
+        this.attached();
+      }
+      if (!this.hasBeenAttached) {
+        this.hasBeenAttached = true;
+        if (this.domReady) {
+          this.async('domReady');
+        }
+      }
+    },
+
+     /**
+     * Implement to access custom elements in dom descendants, ancestors, 
+     * or siblings. Because custom elements upgrade in document order, 
+     * elements accessed in `ready` or `attached` may not be upgraded. When
+     * `domReady` is called, all registered custom elements are guaranteed
+     * to have been upgraded.
+     * 
+     * @method domReady
+     */
+
+    /**
+     * Low-level lifecycle method called as part of standard Custom Elements
+     * operation. Polymer implements this method to provide basic default 
+     * functionality. For custom create-time tasks, implement `detached` 
+     * instead, which is called immediately after `detachedCallback`. 
+     * 
+     * @method detachedCallback
+     */
+    detachedCallback: function() {
+      if (!this.preventDispose) {
+        this.asyncUnbindAll();
+      }
+      // invoke user action
+      if (this.detached) {
+        this.detached();
+      }
+      // TODO(sorvell): bc
+      if (this.leftView) {
+        this.leftView();
+      }
+    },
+
+    /**
+     * Walks the prototype-chain of this element and allows specific
+     * classes a chance to process static declarations.
+     * 
+     * In particular, each polymer-element has it's own `template`.
+     * `parseDeclarations` is used to accumulate all element `template`s
+     * from an inheritance chain.
+     *
+     * `parseDeclaration` static methods implemented in the chain are called
+     * recursively, oldest first, with the `<polymer-element>` associated
+     * with the current prototype passed as an argument.
+     * 
+     * An element may override this method to customize shadow-root generation. 
+     * 
+     * @method parseDeclarations
+     */
+    parseDeclarations: function(p) {
+      if (p && p.element) {
+        this.parseDeclarations(p.__proto__);
+        p.parseDeclaration.call(this, p.element);
+      }
+    },
+
+    /**
+     * Perform init-time actions based on static information in the
+     * `<polymer-element>` instance argument.
+     *
+     * For example, the standard implementation locates the template associated
+     * with the given `<polymer-element>` and stamps it into a shadow-root to
+     * implement shadow inheritance.
+     *  
+     * An element may override this method for custom behavior. 
+     * 
+     * @method parseDeclaration
+     */
+    parseDeclaration: function(elementElement) {
+      var template = this.fetchTemplate(elementElement);
+      if (template) {
+        var root = this.shadowFromTemplate(template);
+        this.shadowRoots[elementElement.name] = root;
+      }
+    },
+
+    /**
+     * Given a `<polymer-element>`, find an associated template (if any) to be
+     * used for shadow-root generation.
+     *
+     * An element may override this method for custom behavior. 
+     * 
+     * @method fetchTemplate
+     */
+    fetchTemplate: function(elementElement) {
+      return elementElement.querySelector('template');
+    },
+
+    /**
+     * Create a shadow-root in this host and stamp `template` as it's 
+     * content. 
+     *
+     * An element may override this method for custom behavior. 
+     * 
+     * @method shadowFromTemplate
+     */
+    shadowFromTemplate: function(template) {
+      if (template) {
+        // make a shadow root
+        var root = this.createShadowRoot();
+        // stamp template
+        // which includes parsing and applying MDV bindings before being
+        // inserted (to avoid {{}} in attribute values)
+        // e.g. to prevent <img src="images/{{icon}}"> from generating a 404.
+        var dom = this.instanceTemplate(template);
+        // append to shadow dom
+        root.appendChild(dom);
+        // perform post-construction initialization tasks on shadow root
+        this.shadowRootReady(root, template);
+        // return the created shadow root
+        return root;
+      }
+    },
+
+    // utility function that stamps a <template> into light-dom
+    lightFromTemplate: function(template, refNode) {
+      if (template) {
+        // TODO(sorvell): mark this element as an eventController so that
+        // event listeners on bound nodes inside it will be called on it.
+        // Note, the expectation here is that events on all descendants
+        // should be handled by this element.
+        this.eventController = this;
+        // stamp template
+        // which includes parsing and applying MDV bindings before being
+        // inserted (to avoid {{}} in attribute values)
+        // e.g. to prevent <img src="images/{{icon}}"> from generating a 404.
+        var dom = this.instanceTemplate(template);
+        // append to shadow dom
+        if (refNode) {
+          this.insertBefore(dom, refNode);
+        } else {
+          this.appendChild(dom);
+        }
+        // perform post-construction initialization tasks on ahem, light root
+        this.shadowRootReady(this);
+        // return the created shadow root
+        return dom;
+      }
+    },
+
+    shadowRootReady: function(root) {
+      // locate nodes with id and store references to them in this.$ hash
+      this.marshalNodeReferences(root);
+    },
+
+    // locate nodes with id and store references to them in this.$ hash
+    marshalNodeReferences: function(root) {
+      // establish $ instance variable
+      var $ = this.$ = this.$ || {};
+      // populate $ from nodes with ID from the LOCAL tree
+      if (root) {
+        var n$ = root.querySelectorAll("[id]");
+        for (var i=0, l=n$.length, n; (i<l) && (n=n$[i]); i++) {
+          $[n.id] = n;
+        };
+      }
+    },
+
+    /**
+     * Register a one-time callback when a child-list or sub-tree mutation
+     * occurs on node. 
+     *
+     * For persistent callbacks, call onMutation from your listener. 
+     * 
+     * @method onMutation
+     * @param Node {Node} node Node to watch for mutations.
+     * @param Function {Function} listener Function to call on mutation. The function is invoked as `listener.call(this, observer, mutations);` where `observer` is the MutationObserver that triggered the notification, and `mutations` is the native mutation list.
+     */
+    onMutation: function(node, listener) {
+      var observer = new MutationObserver(function(mutations) {
+        listener.call(this, observer, mutations);
+        observer.disconnect();
+      }.bind(this));
+      observer.observe(node, {childList: true, subtree: true});
+    }
+  };
+
+  /**
+   * @class Polymer
+   */
+  
+  /**
+   * Returns true if the object includes <a href="#polymer-base">polymer-base</a> in it's prototype chain.
+   * 
+   * @method isBase
+   * @param Object {Object} object Object to test.
+   * @type Boolean
+   */
+  function isBase(object) {
+    return object.hasOwnProperty('PolymerBase')
+  }
+
+  // name a base constructor for dev tools
+
+  /**
+   * The Polymer base-class constructor.
+   * 
+   * @property Base
+   * @type Function
+   */
+  function PolymerBase() {};
+  PolymerBase.prototype = base;
+  base.constructor = PolymerBase;
+
+  // exports
+
+  scope.Base = PolymerBase;
+  scope.isBase = isBase;
+  scope.api.instance.base = base;
+
+})(Polymer);
+
+(function(scope) {
+
+  // imports
+
+  var log = window.WebComponents ? WebComponents.flags.log : {};
+  var hasShadowDOMPolyfill = window.ShadowDOMPolyfill;
+
+  // magic words
+  
+  var STYLE_SCOPE_ATTRIBUTE = 'element';
+  var STYLE_CONTROLLER_SCOPE = 'controller';
+  
+  var styles = {
+    STYLE_SCOPE_ATTRIBUTE: STYLE_SCOPE_ATTRIBUTE,
+    /**
+     * Installs external stylesheets and <style> elements with the attribute 
+     * polymer-scope='controller' into the scope of element. This is intended
+     * to be a called during custom element construction.
+    */
+    installControllerStyles: function() {
+      // apply controller styles, but only if they are not yet applied
+      var scope = this.findStyleScope();
+      if (scope && !this.scopeHasNamedStyle(scope, this.localName)) {
+        // allow inherited controller styles
+        var proto = getPrototypeOf(this), cssText = '';
+        while (proto && proto.element) {
+          cssText += proto.element.cssTextForScope(STYLE_CONTROLLER_SCOPE);
+          proto = getPrototypeOf(proto);
+        }
+        if (cssText) {
+          this.installScopeCssText(cssText, scope);
+        }
+      }
+    },
+    installScopeStyle: function(style, name, scope) {
+      var scope = scope || this.findStyleScope(), name = name || '';
+      if (scope && !this.scopeHasNamedStyle(scope, this.localName + name)) {
+        var cssText = '';
+        if (style instanceof Array) {
+          for (var i=0, l=style.length, s; (i<l) && (s=style[i]); i++) {
+            cssText += s.textContent + '\n\n';
+          }
+        } else {
+          cssText = style.textContent;
+        }
+        this.installScopeCssText(cssText, scope, name);
+      }
+    },
+    installScopeCssText: function(cssText, scope, name) {
+      scope = scope || this.findStyleScope();
+      name = name || '';
+      if (!scope) {
+        return;
+      }
+      if (hasShadowDOMPolyfill) {
+        cssText = shimCssText(cssText, scope.host);
+      }
+      var style = this.element.cssTextToScopeStyle(cssText,
+          STYLE_CONTROLLER_SCOPE);
+      Polymer.applyStyleToScope(style, scope);
+      // cache that this style has been applied
+      this.styleCacheForScope(scope)[this.localName + name] = true;
+    },
+    findStyleScope: function(node) {
+      // find the shadow root that contains this element
+      var n = node || this;
+      while (n.parentNode) {
+        n = n.parentNode;
+      }
+      return n;
+    },
+    scopeHasNamedStyle: function(scope, name) {
+      var cache = this.styleCacheForScope(scope);
+      return cache[name];
+    },
+    styleCacheForScope: function(scope) {
+      if (hasShadowDOMPolyfill) {
+        var scopeName = scope.host ? scope.host.localName : scope.localName;
+        return polyfillScopeStyleCache[scopeName] || (polyfillScopeStyleCache[scopeName] = {});
+      } else {
+        return scope._scopeStyles = (scope._scopeStyles || {});
+      }
+    }
+  };
+
+  var polyfillScopeStyleCache = {};
+  
+  // NOTE: use raw prototype traversal so that we ensure correct traversal
+  // on platforms where the protoype chain is simulated via __proto__ (IE10)
+  function getPrototypeOf(prototype) {
+    return prototype.__proto__;
+  }
+
+  function shimCssText(cssText, host) {
+    var name = '', is = false;
+    if (host) {
+      name = host.localName;
+      is = host.hasAttribute('is');
+    }
+    var selector = WebComponents.ShadowCSS.makeScopeSelector(name, is);
+    return WebComponents.ShadowCSS.shimCssText(cssText, selector);
+  }
+
+  // exports
+
+  scope.api.instance.styles = styles;
+  
+})(Polymer);
+
+(function(scope) {
+
+  // imports
+
+  var extend = scope.extend;
+  var api = scope.api;
+
+  // imperative implementation: Polymer()
+
+  // specify an 'own' prototype for tag `name`
+  function element(name, prototype) {
+    if (typeof name !== 'string') {
+      var script = prototype || document._currentScript;
+      prototype = name;
+      name = script && script.parentNode && script.parentNode.getAttribute ?
+          script.parentNode.getAttribute('name') : '';
+      if (!name) {
+        throw 'Element name could not be inferred.';
+      }
+    }
+    if (getRegisteredPrototype(name)) {
+      throw 'Already registered (Polymer) prototype for element ' + name;
+    }
+    // cache the prototype
+    registerPrototype(name, prototype);
+    // notify the registrar waiting for 'name', if any
+    notifyPrototype(name);
+  }
+
+  // async prototype source
+
+  function waitingForPrototype(name, client) {
+    waitPrototype[name] = client;
+  }
+
+  var waitPrototype = {};
+
+  function notifyPrototype(name) {
+    if (waitPrototype[name]) {
+      waitPrototype[name].registerWhenReady();
+      delete waitPrototype[name];
+    }
+  }
+
+  // utility and bookkeeping
+
+  // maps tag names to prototypes, as registered with
+  // Polymer. Prototypes associated with a tag name
+  // using document.registerElement are available from
+  // HTMLElement.getPrototypeForTag().
+  // If an element was fully registered by Polymer, then
+  // Polymer.getRegisteredPrototype(name) === 
+  //   HTMLElement.getPrototypeForTag(name)
+
+  var prototypesByName = {};
+
+  function registerPrototype(name, prototype) {
+    return prototypesByName[name] = prototype || {};
+  }
+
+  function getRegisteredPrototype(name) {
+    return prototypesByName[name];
+  }
+
+  function instanceOfType(element, type) {
+    if (typeof type !== 'string') {
+      return false;
+    }
+    var proto = HTMLElement.getPrototypeForTag(type);
+    var ctor = proto && proto.constructor;
+    if (!ctor) {
+      return false;
+    }
+    if (CustomElements.instanceof) {
+      return CustomElements.instanceof(element, ctor);
+    }
+    return element instanceof ctor;
+  }
+
+  // exports
+
+  scope.getRegisteredPrototype = getRegisteredPrototype;
+  scope.waitingForPrototype = waitingForPrototype;
+  scope.instanceOfType = instanceOfType;
+
+  // namespace shenanigans so we can expose our scope on the registration 
+  // function
+
+  // make window.Polymer reference `element()`
+
+  window.Polymer = element;
+
+  // TODO(sjmiles): find a way to do this that is less terrible
+  // copy window.Polymer properties onto `element()`
+
+  extend(Polymer, scope);
+
+  // Under the HTMLImports polyfill, scripts in the main document
+  // do not block on imports; we want to allow calls to Polymer in the main
+  // document. WebComponents collects those calls until we can process them, which
+  // we do here.
+
+  if (WebComponents.consumeDeclarations) {
+    WebComponents.consumeDeclarations(function(declarations) {
+      if (declarations) {
+        for (var i=0, l=declarations.length, d; (i<l) && (d=declarations[i]); i++) {
+          element.apply(null, d);
+        }
+      }
+    });
+  }
+
+})(Polymer);
+
+(function(scope) {
+
+/**
+ * @class polymer-base
+ */
+
+ /**
+  * Resolve a url path to be relative to a `base` url. If unspecified, `base`
+  * defaults to the element's ownerDocument url. Can be used to resolve
+  * paths from element's in templates loaded in HTMLImports to be relative
+  * to the document containing the element. Polymer automatically does this for
+  * url attributes in element templates; however, if a url, for
+  * example, contains a binding, then `resolvePath` can be used to ensure it is 
+  * relative to the element document. For example, in an element's template,
+  *
+  *     <a href="{{resolvePath(path)}}">Resolved</a>
+  * 
+  * @method resolvePath
+  * @param {String} url Url path to resolve.
+  * @param {String} base Optional base url against which to resolve, defaults
+  * to the element's ownerDocument url.
+  * returns {String} resolved url.
+  */
+
+var path = {
+  resolveElementPaths: function(node) {
+    Polymer.urlResolver.resolveDom(node);
+  },
+  addResolvePathApi: function() {
+    // let assetpath attribute modify the resolve path
+    var assetPath = this.getAttribute('assetpath') || '';
+    var root = new URL(assetPath, this.ownerDocument.baseURI);
+    this.prototype.resolvePath = function(urlPath, base) {
+      var u = new URL(urlPath, base || root);
+      return u.href;
+    };
+  }
+};
+
+// exports
+scope.api.declaration.path = path;
+
+})(Polymer);
+
+(function(scope) {
+
+  // imports
+
+  var log = window.WebComponents ? WebComponents.flags.log : {};
+  var api = scope.api.instance.styles;
+  var STYLE_SCOPE_ATTRIBUTE = api.STYLE_SCOPE_ATTRIBUTE;
+
+  var hasShadowDOMPolyfill = window.ShadowDOMPolyfill;
+
+  // magic words
+
+  var STYLE_SELECTOR = 'style';
+  var STYLE_LOADABLE_MATCH = '@import';
+  var SHEET_SELECTOR = 'link[rel=stylesheet]';
+  var STYLE_GLOBAL_SCOPE = 'global';
+  var SCOPE_ATTR = 'polymer-scope';
+
+  var styles = {
+    // returns true if resources are loading
+    loadStyles: function(callback) {
+      var template = this.fetchTemplate();
+      var content = template && this.templateContent();
+      if (content) {
+        this.convertSheetsToStyles(content);
+        var styles = this.findLoadableStyles(content);
+        if (styles.length) {
+          var templateUrl = template.ownerDocument.baseURI;
+          return Polymer.styleResolver.loadStyles(styles, templateUrl, callback);
+        }
+      }
+      if (callback) {
+        callback();
+      }
+    },
+    convertSheetsToStyles: function(root) {
+      var s$ = root.querySelectorAll(SHEET_SELECTOR);
+      for (var i=0, l=s$.length, s, c; (i<l) && (s=s$[i]); i++) {
+        c = createStyleElement(importRuleForSheet(s, this.ownerDocument.baseURI),
+            this.ownerDocument);
+        this.copySheetAttributes(c, s);
+        s.parentNode.replaceChild(c, s);
+      }
+    },
+    copySheetAttributes: function(style, link) {
+      for (var i=0, a$=link.attributes, l=a$.length, a; (a=a$[i]) && i<l; i++) {
+        if (a.name !== 'rel' && a.name !== 'href') {
+          style.setAttribute(a.name, a.value);
+        }
+      }
+    },
+    findLoadableStyles: function(root) {
+      var loadables = [];
+      if (root) {
+        var s$ = root.querySelectorAll(STYLE_SELECTOR);
+        for (var i=0, l=s$.length, s; (i<l) && (s=s$[i]); i++) {
+          if (s.textContent.match(STYLE_LOADABLE_MATCH)) {
+            loadables.push(s);
+          }
+        }
+      }
+      return loadables;
+    },
+    /**
+     * Install external stylesheets loaded in <polymer-element> elements into the 
+     * element's template.
+     * @param elementElement The <element> element to style.
+     */
+    installSheets: function() {
+      this.cacheSheets();
+      this.cacheStyles();
+      this.installLocalSheets();
+      this.installGlobalStyles();
+    },
+    /**
+     * Remove all sheets from element and store for later use.
+     */
+    cacheSheets: function() {
+      this.sheets = this.findNodes(SHEET_SELECTOR);
+      this.sheets.forEach(function(s) {
+        if (s.parentNode) {
+          s.parentNode.removeChild(s);
+        }
+      });
+    },
+    cacheStyles: function() {
+      this.styles = this.findNodes(STYLE_SELECTOR + '[' + SCOPE_ATTR + ']');
+      this.styles.forEach(function(s) {
+        if (s.parentNode) {
+          s.parentNode.removeChild(s);
+        }
+      });
+    },
+    /**
+     * Takes external stylesheets loaded in an <element> element and moves
+     * their content into a <style> element inside the <element>'s template.
+     * The sheet is then removed from the <element>. This is done only so 
+     * that if the element is loaded in the main document, the sheet does
+     * not become active.
+     * Note, ignores sheets with the attribute 'polymer-scope'.
+     * @param elementElement The <element> element to style.
+     */
+    installLocalSheets: function () {
+      var sheets = this.sheets.filter(function(s) {
+        return !s.hasAttribute(SCOPE_ATTR);
+      });
+      var content = this.templateContent();
+      if (content) {
+        var cssText = '';
+        sheets.forEach(function(sheet) {
+          cssText += cssTextFromSheet(sheet) + '\n';
+        });
+        if (cssText) {
+          var style = createStyleElement(cssText, this.ownerDocument);
+          content.insertBefore(style, content.firstChild);
+        }
+      }
+    },
+    findNodes: function(selector, matcher) {
+      var nodes = this.querySelectorAll(selector).array();
+      var content = this.templateContent();
+      if (content) {
+        var templateNodes = content.querySelectorAll(selector).array();
+        nodes = nodes.concat(templateNodes);
+      }
+      return matcher ? nodes.filter(matcher) : nodes;
+    },
+    /**
+     * Promotes external stylesheets and <style> elements with the attribute 
+     * polymer-scope='global' into global scope.
+     * This is particularly useful for defining @keyframe rules which 
+     * currently do not function in scoped or shadow style elements.
+     * (See wkb.ug/72462)
+     * @param elementElement The <element> element to style.
+    */
+    // TODO(sorvell): remove when wkb.ug/72462 is addressed.
+    installGlobalStyles: function() {
+      var style = this.styleForScope(STYLE_GLOBAL_SCOPE);
+      applyStyleToScope(style, document.head);
+    },
+    cssTextForScope: function(scopeDescriptor) {
+      var cssText = '';
+      // handle stylesheets
+      var selector = '[' + SCOPE_ATTR + '=' + scopeDescriptor + ']';
+      var matcher = function(s) {
+        return matchesSelector(s, selector);
+      };
+      var sheets = this.sheets.filter(matcher);
+      sheets.forEach(function(sheet) {
+        cssText += cssTextFromSheet(sheet) + '\n\n';
+      });
+      // handle cached style elements
+      var styles = this.styles.filter(matcher);
+      styles.forEach(function(style) {
+        cssText += style.textContent + '\n\n';
+      });
+      return cssText;
+    },
+    styleForScope: function(scopeDescriptor) {
+      var cssText = this.cssTextForScope(scopeDescriptor);
+      return this.cssTextToScopeStyle(cssText, scopeDescriptor);
+    },
+    cssTextToScopeStyle: function(cssText, scopeDescriptor) {
+      if (cssText) {
+        var style = createStyleElement(cssText);
+        style.setAttribute(STYLE_SCOPE_ATTRIBUTE, this.getAttribute('name') +
+            '-' + scopeDescriptor);
+        return style;
+      }
+    }
+  };
+
+  function importRuleForSheet(sheet, baseUrl) {
+    var href = new URL(sheet.getAttribute('href'), baseUrl).href;
+    return '@import \'' + href + '\';';
+  }
+
+  function applyStyleToScope(style, scope) {
+    if (style) {
+      if (scope === document) {
+        scope = document.head;
+      }
+      if (hasShadowDOMPolyfill) {
+        scope = document.head;
+      }
+      // TODO(sorvell): necessary for IE
+      // see https://connect.microsoft.com/IE/feedback/details/790212/
+      // cloning-a-style-element-and-adding-to-document-produces
+      // -unexpected-result#details
+      // var clone = style.cloneNode(true);
+      var clone = createStyleElement(style.textContent);
+      var attr = style.getAttribute(STYLE_SCOPE_ATTRIBUTE);
+      if (attr) {
+        clone.setAttribute(STYLE_SCOPE_ATTRIBUTE, attr);
+      }
+      // TODO(sorvell): probably too brittle; try to figure out 
+      // where to put the element.
+      var refNode = scope.firstElementChild;
+      if (scope === document.head) {
+        var selector = 'style[' + STYLE_SCOPE_ATTRIBUTE + ']';
+        var s$ = document.head.querySelectorAll(selector);
+        if (s$.length) {
+          refNode = s$[s$.length-1].nextElementSibling;
+        }
+      }
+      scope.insertBefore(clone, refNode);
+    }
+  }
+
+  function createStyleElement(cssText, scope) {
+    scope = scope || document;
+    scope = scope.createElement ? scope : scope.ownerDocument;
+    var style = scope.createElement('style');
+    style.textContent = cssText;
+    return style;
+  }
+
+  function cssTextFromSheet(sheet) {
+    return (sheet && sheet.__resource) || '';
+  }
+
+  function matchesSelector(node, inSelector) {
+    if (matches) {
+      return matches.call(node, inSelector);
+    }
+  }
+  var p = HTMLElement.prototype;
+  var matches = p.matches || p.matchesSelector || p.webkitMatchesSelector 
+      || p.mozMatchesSelector;
+  
+  // exports
+
+  scope.api.declaration.styles = styles;
+  scope.applyStyleToScope = applyStyleToScope;
+  
+})(Polymer);
+
+(function(scope) {
+
+  // imports
+
+  var log = window.WebComponents ? WebComponents.flags.log : {};
+  var api = scope.api.instance.events;
+  var EVENT_PREFIX = api.EVENT_PREFIX;
+
+  var mixedCaseEventTypes = {};
+  [
+    'webkitAnimationStart',
+    'webkitAnimationEnd',
+    'webkitTransitionEnd',
+    'DOMFocusOut',
+    'DOMFocusIn',
+    'DOMMouseScroll'
+  ].forEach(function(e) {
+    mixedCaseEventTypes[e.toLowerCase()] = e;
+  });
+
+  // polymer-element declarative api: events feature
+  var events = {
+    parseHostEvents: function() {
+      // our delegates map
+      var delegates = this.prototype.eventDelegates;
+      // extract data from attributes into delegates
+      this.addAttributeDelegates(delegates);
+    },
+    addAttributeDelegates: function(delegates) {
+      // for each attribute
+      for (var i=0, a; a=this.attributes[i]; i++) {
+        // does it have magic marker identifying it as an event delegate?
+        if (this.hasEventPrefix(a.name)) {
+          // if so, add the info to delegates
+          delegates[this.removeEventPrefix(a.name)] = a.value.replace('{{', '')
+              .replace('}}', '').trim();
+        }
+      }
+    },
+    // starts with 'on-'
+    hasEventPrefix: function (n) {
+      return n && (n[0] === 'o') && (n[1] === 'n') && (n[2] === '-');
+    },
+    removeEventPrefix: function(n) {
+      return n.slice(prefixLength);
+    },
+    findController: function(node) {
+      while (node.parentNode) {
+        if (node.eventController) {
+          return node.eventController;
+        }
+        node = node.parentNode;
+      }
+      return node.host;
+    },
+    getEventHandler: function(controller, target, method) {
+      var events = this;
+      return function(e) {
+        if (!controller || !controller.PolymerBase) {
+          controller = events.findController(target);
+        }
+
+        var args = [e, e.detail, e.currentTarget];
+        controller.dispatchMethod(controller, method, args);
+      };
+    },
+    prepareEventBinding: function(pathString, name, node) {
+      if (!this.hasEventPrefix(name))
+        return;
+
+      var eventType = this.removeEventPrefix(name);
+      eventType = mixedCaseEventTypes[eventType] || eventType;
+
+      var events = this;
+
+      return function(model, node, oneTime) {
+        var handler = events.getEventHandler(undefined, node, pathString);
+        PolymerGestures.addEventListener(node, eventType, handler);
+
+        if (oneTime)
+          return;
+
+        // TODO(rafaelw): This is really pointless work. Aside from the cost
+        // of these allocations, NodeBind is going to setAttribute back to its
+        // current value. Fixing this would mean changing the TemplateBinding
+        // binding delegate API.
+        function bindingValue() {
+          return '{{ ' + pathString + ' }}';
+        }
+
+        return {
+          open: bindingValue,
+          discardChanges: bindingValue,
+          close: function() {
+            PolymerGestures.removeEventListener(node, eventType, handler);
+          }
+        };
+      };
+    }
+  };
+
+  var prefixLength = EVENT_PREFIX.length;
+
+  // exports
+  scope.api.declaration.events = events;
+
+})(Polymer);
+
+(function(scope) {
+
+  // element api
+
+  var observationBlacklist = ['attribute'];
+
+  var properties = {
+    inferObservers: function(prototype) {
+      // called before prototype.observe is chained to inherited object
+      var observe = prototype.observe, property;
+      for (var n in prototype) {
+        if (n.slice(-7) === 'Changed') {
+          property = n.slice(0, -7);
+          if (this.canObserveProperty(property)) {
+            if (!observe) {
+              observe  = (prototype.observe = {});
+            }
+            observe[property] = observe[property] || n;
+          }
+        }
+      }
+    },
+    canObserveProperty: function(property) {
+      return (observationBlacklist.indexOf(property) < 0);
+    },
+    explodeObservers: function(prototype) {
+      // called before prototype.observe is chained to inherited object
+      var o = prototype.observe;
+      if (o) {
+        var exploded = {};
+        for (var n in o) {
+          var names = n.split(' ');
+          for (var i=0, ni; ni=names[i]; i++) {
+            exploded[ni] = o[n];
+          }
+        }
+        prototype.observe = exploded;
+      }
+    },
+    optimizePropertyMaps: function(prototype) {
+      if (prototype.observe) {
+        // construct name list
+        var a = prototype._observeNames = [];
+        for (var n in prototype.observe) {
+          var names = n.split(' ');
+          for (var i=0, ni; ni=names[i]; i++) {
+            a.push(ni);
+          }
+        }
+      }
+      if (prototype.publish) {
+        // construct name list
+        var a = prototype._publishNames = [];
+        for (var n in prototype.publish) {
+          a.push(n);
+        }
+      }
+      if (prototype.computed) {
+        // construct name list
+        var a = prototype._computedNames = [];
+        for (var n in prototype.computed) {
+          a.push(n);
+        }
+      }
+    },
+    publishProperties: function(prototype, base) {
+      // if we have any properties to publish
+      var publish = prototype.publish;
+      if (publish) {
+        // transcribe `publish` entries onto own prototype
+        this.requireProperties(publish, prototype, base);
+        // warn and remove accessor names that are broken on some browsers
+        this.filterInvalidAccessorNames(publish);
+        // construct map of lower-cased property names
+        prototype._publishLC = this.lowerCaseMap(publish);
+      }
+      var computed = prototype.computed;
+      if (computed) {
+        // warn and remove accessor names that are broken on some browsers
+        this.filterInvalidAccessorNames(computed);
+      }
+    },
+    // Publishing/computing a property where the name might conflict with a
+    // browser property is not currently supported to help users of Polymer
+    // avoid browser bugs:
+    //
+    // https://code.google.com/p/chromium/issues/detail?id=43394
+    // https://bugs.webkit.org/show_bug.cgi?id=49739
+    //
+    // We can lift this restriction when those bugs are fixed.
+    filterInvalidAccessorNames: function(propertyNames) {
+      for (var name in propertyNames) {
+        // Check if the name is in our blacklist.
+        if (this.propertyNameBlacklist[name]) {
+          console.warn('Cannot define property "' + name + '" for element "' +
+            this.name + '" because it has the same name as an HTMLElement ' +
+            'property, and not all browsers support overriding that. ' +
+            'Consider giving it a different name.');
+          // Remove the invalid accessor from the list.
+          delete propertyNames[name];
+        }
+      }
+    },
+    //
+    // `name: value` entries in the `publish` object may need to generate 
+    // matching properties on the prototype.
+    //
+    // Values that are objects may have a `reflect` property, which
+    // signals that the value describes property control metadata.
+    // In metadata objects, the prototype default value (if any)
+    // is encoded in the `value` property.
+    //
+    // publish: {
+    //   foo: 5, 
+    //   bar: {value: true, reflect: true},
+    //   zot: {}
+    // }
+    //
+    // `reflect` metadata property controls whether changes to the property
+    // are reflected back to the attribute (default false). 
+    //
+    // A value is stored on the prototype unless it's === `undefined`,
+    // in which case the base chain is checked for a value.
+    // If the basal value is also undefined, `null` is stored on the prototype.
+    //
+    // The reflection data is stored on another prototype object, `reflect`
+    // which also can be specified directly.
+    //
+    // reflect: {
+    //   foo: true
+    // }
+    //
+    requireProperties: function(propertyInfos, prototype, base) {
+      // per-prototype storage for reflected properties
+      prototype.reflect = prototype.reflect || {};
+      // ensure a prototype value for each property
+      // and update the property's reflect to attribute status
+      for (var n in propertyInfos) {
+        var value = propertyInfos[n];
+        // value has metadata if it has a `reflect` property
+        if (value && value.reflect !== undefined) {
+          prototype.reflect[n] = Boolean(value.reflect);
+          value = value.value;
+        }
+        // only set a value if one is specified
+        if (value !== undefined) {
+          prototype[n] = value;
+        }
+      }
+    },
+    lowerCaseMap: function(properties) {
+      var map = {};
+      for (var n in properties) {
+        map[n.toLowerCase()] = n;
+      }
+      return map;
+    },
+    createPropertyAccessor: function(name, ignoreWrites) {
+      var proto = this.prototype;
+
+      var privateName = name + '_';
+      var privateObservable  = name + 'Observable_';
+      proto[privateName] = proto[name];
+
+      Object.defineProperty(proto, name, {
+        get: function() {
+          var observable = this[privateObservable];
+          if (observable)
+            observable.deliver();
+
+          return this[privateName];
+        },
+        set: function(value) {
+          if (ignoreWrites) {
+            return this[privateName];
+          }
+
+          var observable = this[privateObservable];
+          if (observable) {
+            observable.setValue(value);
+            return;
+          }
+
+          var oldValue = this[privateName];
+          this[privateName] = value;
+          this.emitPropertyChangeRecord(name, value, oldValue);
+
+          return value;
+        },
+        configurable: true
+      });
+    },
+    createPropertyAccessors: function(prototype) {
+      var n$ = prototype._computedNames;
+      if (n$ && n$.length) {
+        for (var i=0, l=n$.length, n, fn; (i<l) && (n=n$[i]); i++) {
+          this.createPropertyAccessor(n, true);
+        }
+      }
+      var n$ = prototype._publishNames;
+      if (n$ && n$.length) {
+        for (var i=0, l=n$.length, n, fn; (i<l) && (n=n$[i]); i++) {
+          // If the property is computed and published, the accessor is created
+          // above.
+          if (!prototype.computed || !prototype.computed[n]) {
+            this.createPropertyAccessor(n);
+          }
+        }
+      }
+    },
+    // This list contains some property names that people commonly want to use,
+    // but won't work because of Chrome/Safari bugs. It isn't an exhaustive
+    // list. In particular it doesn't contain any property names found on
+    // subtypes of HTMLElement (e.g. name, value). Rather it attempts to catch
+    // some common cases.
+    propertyNameBlacklist: {
+      children: 1,
+      'class': 1,
+      id: 1,
+      hidden: 1,
+      style: 1,
+      title: 1,
+    }
+  };
+
+  // exports
+
+  scope.api.declaration.properties = properties;
+
+})(Polymer);
+
+(function(scope) {
+
+  // magic words
+
+  var ATTRIBUTES_ATTRIBUTE = 'attributes';
+  var ATTRIBUTES_REGEX = /\s|,/;
+
+  // attributes api
+
+  var attributes = {
+    
+    inheritAttributesObjects: function(prototype) {
+      // chain our lower-cased publish map to the inherited version
+      this.inheritObject(prototype, 'publishLC');
+      // chain our instance attributes map to the inherited version
+      this.inheritObject(prototype, '_instanceAttributes');
+    },
+
+    publishAttributes: function(prototype, base) {
+      // merge names from 'attributes' attribute into the 'publish' object
+      var attributes = this.getAttribute(ATTRIBUTES_ATTRIBUTE);
+      if (attributes) {
+        // create a `publish` object if needed.
+        // the `publish` object is only relevant to this prototype, the 
+        // publishing logic in `declaration/properties.js` is responsible for
+        // managing property values on the prototype chain.
+        // TODO(sjmiles): the `publish` object is later chained to it's 
+        //                ancestor object, presumably this is only for 
+        //                reflection or other non-library uses. 
+        var publish = prototype.publish || (prototype.publish = {}); 
+        // names='a b c' or names='a,b,c'
+        var names = attributes.split(ATTRIBUTES_REGEX);
+        // record each name for publishing
+        for (var i=0, l=names.length, n; i<l; i++) {
+          // remove excess ws
+          n = names[i].trim();
+          // looks weird, but causes n to exist on `publish` if it does not;
+          // a more careful test would need expensive `in` operator
+          if (n && publish[n] === undefined) {
+            publish[n] = undefined;
+          }
+        }
+      }
+    },
+
+    // record clonable attributes from <element>
+    accumulateInstanceAttributes: function() {
+      // inherit instance attributes
+      var clonable = this.prototype._instanceAttributes;
+      // merge attributes from element
+      var a$ = this.attributes;
+      for (var i=0, l=a$.length, a; (i<l) && (a=a$[i]); i++) {  
+        if (this.isInstanceAttribute(a.name)) {
+          clonable[a.name] = a.value;
+        }
+      }
+    },
+
+    isInstanceAttribute: function(name) {
+      return !this.blackList[name] && name.slice(0,3) !== 'on-';
+    },
+
+    // do not clone these attributes onto instances
+    blackList: {
+      name: 1,
+      'extends': 1,
+      constructor: 1,
+      noscript: 1,
+      assetpath: 1,
+      'cache-csstext': 1
+    }
+    
+  };
+
+  // add ATTRIBUTES_ATTRIBUTE to the blacklist
+  attributes.blackList[ATTRIBUTES_ATTRIBUTE] = 1;
+
+  // exports
+
+  scope.api.declaration.attributes = attributes;
+
+})(Polymer);
+
+(function(scope) {
+
+  // imports
+  var events = scope.api.declaration.events;
+
+  var syntax = new PolymerExpressions();
+  var prepareBinding = syntax.prepareBinding;
+
+  // Polymer takes a first crack at the binding to see if it's a declarative
+  // event handler.
+  syntax.prepareBinding = function(pathString, name, node) {
+    return events.prepareEventBinding(pathString, name, node) ||
+           prepareBinding.call(syntax, pathString, name, node);
+  };
+
+  // declaration api supporting mdv
+  var mdv = {
+    syntax: syntax,
+    fetchTemplate: function() {
+      return this.querySelector('template');
+    },
+    templateContent: function() {
+      var template = this.fetchTemplate();
+      return template && template.content;
+    },
+    installBindingDelegate: function(template) {
+      if (template) {
+        template.bindingDelegate = this.syntax;
+      }
+    }
+  };
+
+  // exports
+  scope.api.declaration.mdv = mdv;
+
+})(Polymer);
+
+(function(scope) {
+
+  // imports
+  
+  var api = scope.api;
+  var isBase = scope.isBase;
+  var extend = scope.extend;
+
+  var hasShadowDOMPolyfill = window.ShadowDOMPolyfill;
+
+  // prototype api
+
+  var prototype = {
+
+    register: function(name, extendeeName) {
+      // build prototype combining extendee, Polymer base, and named api
+      this.buildPrototype(name, extendeeName);
+      // register our custom element with the platform
+      this.registerPrototype(name, extendeeName);
+      // reference constructor in a global named by 'constructor' attribute
+      this.publishConstructor();
+    },
+
+    buildPrototype: function(name, extendeeName) {
+      // get our custom prototype (before chaining)
+      var extension = scope.getRegisteredPrototype(name);
+      // get basal prototype
+      var base = this.generateBasePrototype(extendeeName);
+      // implement declarative features
+      this.desugarBeforeChaining(extension, base);
+      // join prototypes
+      this.prototype = this.chainPrototypes(extension, base);
+      // more declarative features
+      this.desugarAfterChaining(name, extendeeName);
+    },
+
+    desugarBeforeChaining: function(prototype, base) {
+      // back reference declaration element
+      // TODO(sjmiles): replace `element` with `elementElement` or `declaration`
+      prototype.element = this;
+      // transcribe `attributes` declarations onto own prototype's `publish`
+      this.publishAttributes(prototype, base);
+      // `publish` properties to the prototype and to attribute watch
+      this.publishProperties(prototype, base);
+      // infer observers for `observe` list based on method names
+      this.inferObservers(prototype);
+      // desugar compound observer syntax, e.g. 'a b c' 
+      this.explodeObservers(prototype);
+    },
+
+    chainPrototypes: function(prototype, base) {
+      // chain various meta-data objects to inherited versions
+      this.inheritMetaData(prototype, base);
+      // chain custom api to inherited
+      var chained = this.chainObject(prototype, base);
+      // x-platform fixup
+      ensurePrototypeTraversal(chained);
+      return chained;
+    },
+
+    inheritMetaData: function(prototype, base) {
+      // chain observe object to inherited
+      this.inheritObject('observe', prototype, base);
+      // chain publish object to inherited
+      this.inheritObject('publish', prototype, base);
+      // chain reflect object to inherited
+      this.inheritObject('reflect', prototype, base);
+      // chain our lower-cased publish map to the inherited version
+      this.inheritObject('_publishLC', prototype, base);
+      // chain our instance attributes map to the inherited version
+      this.inheritObject('_instanceAttributes', prototype, base);
+      // chain our event delegates map to the inherited version
+      this.inheritObject('eventDelegates', prototype, base);
+    },
+
+    // implement various declarative features
+    desugarAfterChaining: function(name, extendee) {
+      // build side-chained lists to optimize iterations
+      this.optimizePropertyMaps(this.prototype);
+      this.createPropertyAccessors(this.prototype);
+      // install mdv delegate on template
+      this.installBindingDelegate(this.fetchTemplate());
+      // install external stylesheets as if they are inline
+      this.installSheets();
+      // adjust any paths in dom from imports
+      this.resolveElementPaths(this);
+      // compile list of attributes to copy to instances
+      this.accumulateInstanceAttributes();
+      // parse on-* delegates declared on `this` element
+      this.parseHostEvents();
+      //
+      // install a helper method this.resolvePath to aid in 
+      // setting resource urls. e.g.
+      // this.$.image.src = this.resolvePath('images/foo.png')
+      this.addResolvePathApi();
+      // under ShadowDOMPolyfill, transforms to approximate missing CSS features
+      if (hasShadowDOMPolyfill) {
+        WebComponents.ShadowCSS.shimStyling(this.templateContent(), name,
+          extendee);
+      }
+      // allow custom element access to the declarative context
+      if (this.prototype.registerCallback) {
+        this.prototype.registerCallback(this);
+      }
+    },
+
+    // if a named constructor is requested in element, map a reference
+    // to the constructor to the given symbol
+    publishConstructor: function() {
+      var symbol = this.getAttribute('constructor');
+      if (symbol) {
+        window[symbol] = this.ctor;
+      }
+    },
+
+    // build prototype combining extendee, Polymer base, and named api
+    generateBasePrototype: function(extnds) {
+      var prototype = this.findBasePrototype(extnds);
+      if (!prototype) {
+        // create a prototype based on tag-name extension
+        var prototype = HTMLElement.getPrototypeForTag(extnds);
+        // insert base api in inheritance chain (if needed)
+        prototype = this.ensureBaseApi(prototype);
+        // memoize this base
+        memoizedBases[extnds] = prototype;
+      }
+      return prototype;
+    },
+
+    findBasePrototype: function(name) {
+      return memoizedBases[name];
+    },
+
+    // install Polymer instance api into prototype chain, as needed 
+    ensureBaseApi: function(prototype) {
+      if (prototype.PolymerBase) {
+        return prototype;
+      }
+      var extended = Object.create(prototype);
+      // we need a unique copy of base api for each base prototype
+      // therefore we 'extend' here instead of simply chaining
+      api.publish(api.instance, extended);
+      // TODO(sjmiles): sharing methods across prototype chains is
+      // not supported by 'super' implementation which optimizes
+      // by memoizing prototype relationships.
+      // Probably we should have a version of 'extend' that is 
+      // share-aware: it could study the text of each function,
+      // look for usage of 'super', and wrap those functions in
+      // closures.
+      // As of now, there is only one problematic method, so 
+      // we just patch it manually.
+      // To avoid re-entrancy problems, the special super method
+      // installed is called `mixinSuper` and the mixin method
+      // must use this method instead of the default `super`.
+      this.mixinMethod(extended, prototype, api.instance.mdv, 'bind');
+      // return buffed-up prototype
+      return extended;
+    },
+
+    mixinMethod: function(extended, prototype, api, name) {
+      var $super = function(args) {
+        return prototype[name].apply(this, args);
+      };
+      extended[name] = function() {
+        this.mixinSuper = $super;
+        return api[name].apply(this, arguments);
+      }
+    },
+
+    // ensure prototype[name] inherits from a prototype.prototype[name]
+    inheritObject: function(name, prototype, base) {
+      // require an object
+      var source = prototype[name] || {};
+      // chain inherited properties onto a new object
+      prototype[name] = this.chainObject(source, base[name]);
+    },
+
+    // register 'prototype' to custom element 'name', store constructor 
+    registerPrototype: function(name, extendee) { 
+      var info = {
+        prototype: this.prototype
+      }
+      // native element must be specified in extends
+      var typeExtension = this.findTypeExtension(extendee);
+      if (typeExtension) {
+        info.extends = typeExtension;
+      }
+      // register the prototype with HTMLElement for name lookup
+      HTMLElement.register(name, this.prototype);
+      // register the custom type
+      this.ctor = document.registerElement(name, info);
+    },
+
+    findTypeExtension: function(name) {
+      if (name && name.indexOf('-') < 0) {
+        return name;
+      } else {
+        var p = this.findBasePrototype(name);
+        if (p.element) {
+          return this.findTypeExtension(p.element.extends);
+        }
+      }
+    }
+
+  };
+
+  // memoize base prototypes
+  var memoizedBases = {};
+
+  // implementation of 'chainObject' depends on support for __proto__
+  if (Object.__proto__) {
+    prototype.chainObject = function(object, inherited) {
+      if (object && inherited && object !== inherited) {
+        object.__proto__ = inherited;
+      }
+      return object;
+    }
+  } else {
+    prototype.chainObject = function(object, inherited) {
+      if (object && inherited && object !== inherited) {
+        var chained = Object.create(inherited);
+        object = extend(chained, object);
+      }
+      return object;
+    }
+  }
+
+  // On platforms that do not support __proto__ (versions of IE), the prototype
+  // chain of a custom element is simulated via installation of __proto__.
+  // Although custom elements manages this, we install it here so it's
+  // available during desugaring.
+  function ensurePrototypeTraversal(prototype) {
+    if (!Object.__proto__) {
+      var ancestor = Object.getPrototypeOf(prototype);
+      prototype.__proto__ = ancestor;
+      if (isBase(ancestor)) {
+        ancestor.__proto__ = Object.getPrototypeOf(ancestor);
+      }
+    }
+  }
+
+  // exports
+
+  api.declaration.prototype = prototype;
+
+})(Polymer);
+
+(function(scope) {
+
+  /*
+
+    Elements are added to a registration queue so that they register in 
+    the proper order at the appropriate time. We do this for a few reasons:
+
+    * to enable elements to load resources (like stylesheets) 
+    asynchronously. We need to do this until the platform provides an efficient
+    alternative. One issue is that remote @import stylesheets are 
+    re-fetched whenever stamped into a shadowRoot.
+
+    * to ensure elements loaded 'at the same time' (e.g. via some set of
+    imports) are registered as a batch. This allows elements to be enured from
+    upgrade ordering as long as they query the dom tree 1 task after
+    upgrade (aka domReady). This is a performance tradeoff. On the one hand,
+    elements that could register while imports are loading are prevented from 
+    doing so. On the other, grouping upgrades into a single task means less
+    incremental work (for example style recalcs),  Also, we can ensure the 
+    document is in a known state at the single quantum of time when 
+    elements upgrade.
+
+  */
+  var queue = {
+
+    // tell the queue to wait for an element to be ready
+    wait: function(element) {
+      if (!element.__queue) {
+        element.__queue = {};
+        elements.push(element);
+      }
+    },
+
+    // enqueue an element to the next spot in the queue.
+    enqueue: function(element, check, go) {
+      var shouldAdd = element.__queue && !element.__queue.check;
+      if (shouldAdd) {
+        queueForElement(element).push(element);
+        element.__queue.check = check;
+        element.__queue.go = go;
+      }
+      return (this.indexOf(element) !== 0);
+    },
+
+    indexOf: function(element) {
+      var i = queueForElement(element).indexOf(element);
+      if (i >= 0 && document.contains(element)) {
+        i += (HTMLImports.useNative || HTMLImports.ready) ? 
+          importQueue.length : 1e9;
+      }
+      return i;  
+    },
+
+    // tell the queue an element is ready to be registered
+    go: function(element) {
+      var readied = this.remove(element);
+      if (readied) {
+        element.__queue.flushable = true;
+        this.addToFlushQueue(readied);
+        this.check();
+      }
+    },
+
+    remove: function(element) {
+      var i = this.indexOf(element);
+      if (i !== 0) {
+        //console.warn('queue order wrong', i);
+        return;
+      }
+      return queueForElement(element).shift();
+    },
+
+    check: function() {
+      // next
+      var element = this.nextElement();
+      if (element) {
+        element.__queue.check.call(element);
+      }
+      if (this.canReady()) {
+        this.ready();
+        return true;
+      }
+    },
+
+    nextElement: function() {
+      return nextQueued();
+    },
+
+    canReady: function() {
+      return !this.waitToReady && this.isEmpty();
+    },
+
+    isEmpty: function() {
+      for (var i=0, l=elements.length, e; (i<l) && 
+          (e=elements[i]); i++) {
+        if (e.__queue && !e.__queue.flushable) {
+          return;
+        }
+      }
+      return true;
+    },
+
+    addToFlushQueue: function(element) {
+      flushQueue.push(element);  
+    },
+
+    flush: function() {
+      // prevent re-entrance
+      if (this.flushing) {
+        return;
+      }
+      this.flushing = true;
+      var element;
+      while (flushQueue.length) {
+        element = flushQueue.shift();
+        element.__queue.go.call(element);
+        element.__queue = null;
+      }
+      this.flushing = false;
+    },
+
+    ready: function() {
+      // TODO(sorvell): As an optimization, turn off CE polyfill upgrading
+      // while registering. This way we avoid having to upgrade each document
+      // piecemeal per registration and can instead register all elements
+      // and upgrade once in a batch. Without this optimization, upgrade time
+      // degrades significantly when SD polyfill is used. This is mainly because
+      // querying the document tree for elements is slow under the SD polyfill.
+      var polyfillWasReady = CustomElements.ready;
+      CustomElements.ready = false;
+      this.flush();
+      if (!CustomElements.useNative) {
+        CustomElements.upgradeDocumentTree(document);
+      }
+      CustomElements.ready = polyfillWasReady;
+      Polymer.flush();
+      requestAnimationFrame(this.flushReadyCallbacks);
+    },
+
+    addReadyCallback: function(callback) {
+      if (callback) {
+        readyCallbacks.push(callback);
+      }
+    },
+
+    flushReadyCallbacks: function() {
+      if (readyCallbacks) {
+        var fn;
+        while (readyCallbacks.length) {
+          fn = readyCallbacks.shift();
+          fn();
+        }
+      }
+    },
+  
+    /**
+    Returns a list of elements that have had polymer-elements created but 
+    are not yet ready to register. The list is an array of element definitions.
+    */
+    waitingFor: function() {
+      var e$ = [];
+      for (var i=0, l=elements.length, e; (i<l) && 
+          (e=elements[i]); i++) {
+        if (e.__queue && !e.__queue.flushable) {
+          e$.push(e);
+        }
+      }
+      return e$;
+    },
+
+    waitToReady: true
+
+  };
+
+  var elements = [];
+  var flushQueue = [];
+  var importQueue = [];
+  var mainQueue = [];
+  var readyCallbacks = [];
+
+  function queueForElement(element) {
+    return document.contains(element) ? mainQueue : importQueue;
+  }
+
+  function nextQueued() {
+    return importQueue.length ? importQueue[0] : mainQueue[0];
+  }
+
+  function whenReady(callback) {
+    queue.waitToReady = true;
+    Polymer.endOfMicrotask(function() {
+      HTMLImports.whenReady(function() {
+        queue.addReadyCallback(callback);
+        queue.waitToReady = false;
+        queue.check();
+    });
+    });
+  }
+
+  /**
+    Forces polymer to register any pending elements. Can be used to abort
+    waiting for elements that are partially defined.
+    @param timeout {Integer} Optional timeout in milliseconds
+  */
+  function forceReady(timeout) {
+    if (timeout === undefined) {
+      queue.ready();
+      return;
+    }
+    var handle = setTimeout(function() {
+      queue.ready();
+    }, timeout);
+    Polymer.whenReady(function() {
+      clearTimeout(handle);
+    });
+  }
+
+  // exports
+  scope.elements = elements;
+  scope.waitingFor = queue.waitingFor.bind(queue);
+  scope.forceReady = forceReady;
+  scope.queue = queue;
+  scope.whenReady = scope.whenPolymerReady = whenReady;
+})(Polymer);
+
+(function(scope) {
+
+  // imports
+
+  var extend = scope.extend;
+  var api = scope.api;
+  var queue = scope.queue;
+  var whenReady = scope.whenReady;
+  var getRegisteredPrototype = scope.getRegisteredPrototype;
+  var waitingForPrototype = scope.waitingForPrototype;
+
+  // declarative implementation: <polymer-element>
+
+  var prototype = extend(Object.create(HTMLElement.prototype), {
+
+    createdCallback: function() {
+      if (this.getAttribute('name')) {
+        this.init();
+      }
+    },
+
+    init: function() {
+      // fetch declared values
+      this.name = this.getAttribute('name');
+      this.extends = this.getAttribute('extends');
+      queue.wait(this);
+      // initiate any async resource fetches
+      this.loadResources();
+      // register when all constraints are met
+      this.registerWhenReady();
+    },
+
+    // TODO(sorvell): we currently queue in the order the prototypes are 
+    // registered, but we should queue in the order that polymer-elements
+    // are registered. We are currently blocked from doing this based on 
+    // crbug.com/395686.
+    registerWhenReady: function() {
+     if (this.registered
+       || this.waitingForPrototype(this.name)
+       || this.waitingForQueue()
+       || this.waitingForResources()) {
+          return;
+      }
+      queue.go(this);
+    },
+
+    _register: function() {
+      //console.log('registering', this.name);
+      // warn if extending from a custom element not registered via Polymer
+      if (isCustomTag(this.extends) && !isRegistered(this.extends)) {
+        console.warn('%s is attempting to extend %s, an unregistered element ' +
+            'or one that was not registered with Polymer.', this.name,
+            this.extends);
+      }
+      this.register(this.name, this.extends);
+      this.registered = true;
+    },
+
+    waitingForPrototype: function(name) {
+      if (!getRegisteredPrototype(name)) {
+        // then wait for a prototype
+        waitingForPrototype(name, this);
+        // emulate script if user is not supplying one
+        this.handleNoScript(name);
+        // prototype not ready yet
+        return true;
+      }
+    },
+
+    handleNoScript: function(name) {
+      // if explicitly marked as 'noscript'
+      if (this.hasAttribute('noscript') && !this.noscript) {
+        this.noscript = true;
+        // imperative element registration
+        Polymer(name);
+      }
+    },
+
+    waitingForResources: function() {
+      return this._needsResources;
+    },
+
+    // NOTE: Elements must be queued in proper order for inheritance/composition
+    // dependency resolution. Previously this was enforced for inheritance,
+    // and by rule for composition. It's now entirely by rule.
+    waitingForQueue: function() {
+      return queue.enqueue(this, this.registerWhenReady, this._register);
+    },
+
+    loadResources: function() {
+      this._needsResources = true;
+      this.loadStyles(function() {
+        this._needsResources = false;
+        this.registerWhenReady();
+      }.bind(this));
+    }
+
+  });
+
+  // semi-pluggable APIs 
+
+  // TODO(sjmiles): should be fully pluggable (aka decoupled, currently
+  // the various plugins are allowed to depend on each other directly)
+  api.publish(api.declaration, prototype);
+
+  // utility and bookkeeping
+
+  function isRegistered(name) {
+    return Boolean(HTMLElement.getPrototypeForTag(name));
+  }
+
+  function isCustomTag(name) {
+    return (name && name.indexOf('-') >= 0);
+  }
+
+  // boot tasks
+
+  whenReady(function() {
+    document.body.removeAttribute('unresolved');
+    document.dispatchEvent(
+      new CustomEvent('polymer-ready', {bubbles: true})
+    );
+  });
+
+  // register polymer-element with document
+
+  document.registerElement('polymer-element', {prototype: prototype});
+
+})(Polymer);
+
+(function(scope) {
+
+/**
+ * @class Polymer
+ */
+
+var whenReady = scope.whenReady;
+
+/**
+ * Loads the set of HTMLImports contained in `node`. Notifies when all
+ * the imports have loaded by calling the `callback` function argument.
+ * This method can be used to lazily load imports. For example, given a 
+ * template:
+ *     
+ *     <template>
+ *       <link rel="import" href="my-import1.html">
+ *       <link rel="import" href="my-import2.html">
+ *     </template>
+ *
+ *     Polymer.importElements(template.content, function() {
+ *       console.log('imports lazily loaded'); 
+ *     });
+ * 
+ * @method importElements
+ * @param {Node} node Node containing the HTMLImports to load.
+ * @param {Function} callback Callback called when all imports have loaded.
+ */
+function importElements(node, callback) {
+  if (node) {
+    document.head.appendChild(node);
+    whenReady(callback);
+  } else if (callback) {
+    callback();
+  }
+}
+
+/**
+ * Loads an HTMLImport for each url specified in the `urls` array.
+ * Notifies when all the imports have loaded by calling the `callback` 
+ * function argument. This method can be used to lazily load imports. 
+ * For example,
+ *
+ *     Polymer.import(['my-import1.html', 'my-import2.html'], function() {
+ *       console.log('imports lazily loaded'); 
+ *     });
+ * 
+ * @method import
+ * @param {Array} urls Array of urls to load as HTMLImports.
+ * @param {Function} callback Callback called when all imports have loaded.
+ */
+function _import(urls, callback) {
+  if (urls && urls.length) {
+      var frag = document.createDocumentFragment();
+      for (var i=0, l=urls.length, url, link; (i<l) && (url=urls[i]); i++) {
+        link = document.createElement('link');
+        link.rel = 'import';
+        link.href = url;
+        frag.appendChild(link);
+      }
+      importElements(frag, callback);
+  } else if (callback) {
+    callback();
+  }
+}
+
+// exports
+scope.import = _import;
+scope.importElements = importElements;
+
+})(Polymer);
+
+/**
+ * The `auto-binding` element extends the template element. It provides a quick 
+ * and easy way to do data binding without the need to setup a model. 
+ * The `auto-binding` element itself serves as the model and controller for the 
+ * elements it contains. Both data and event handlers can be bound. 
+ *
+ * The `auto-binding` element acts just like a template that is bound to 
+ * a model. It stamps its content in the dom adjacent to itself. When the 
+ * content is stamped, the `template-bound` event is fired.
+ *
+ * Example:
+ *
+ *     <template is="auto-binding">
+ *       <div>Say something: <input value="{{value}}"></div>
+ *       <div>You said: {{value}}</div>
+ *       <button on-tap="{{buttonTap}}">Tap me!</button>
+ *     </template>
+ *     <script>
+ *       var template = document.querySelector('template');
+ *       template.value = 'something';
+ *       template.buttonTap = function() {
+ *         console.log('tap!');
+ *       };
+ *     </script>
+ *
+ * @module Polymer
+ * @status stable
+*/
+
+(function() {
+
+  var element = document.createElement('polymer-element');
+  element.setAttribute('name', 'auto-binding');
+  element.setAttribute('extends', 'template');
+  element.init();
+
+  Polymer('auto-binding', {
+
+    createdCallback: function() {
+      this.syntax = this.bindingDelegate = this.makeSyntax();
+      // delay stamping until polymer-ready so that auto-binding is not
+      // required to load last.
+      Polymer.whenPolymerReady(function() {
+        this.model = this;
+        this.setAttribute('bind', '');
+        // we don't bother with an explicit signal here, we could ust a MO
+        // if necessary
+        this.async(function() {
+          // note: this will marshall *all* the elements in the parentNode
+          // rather than just stamped ones. We'd need to use createInstance
+          // to fix this or something else fancier.
+          this.marshalNodeReferences(this.parentNode);
+          // template stamping is asynchronous so stamping isn't complete
+          // by polymer-ready; fire an event so users can use stamped elements
+          this.fire('template-bound');
+        });
+      }.bind(this));
+    },
+
+    makeSyntax: function() {
+      var events = Object.create(Polymer.api.declaration.events);
+      var self = this;
+      events.findController = function() { return self.model; };
+
+      var syntax = new PolymerExpressions();
+      var prepareBinding = syntax.prepareBinding;  
+      syntax.prepareBinding = function(pathString, name, node) {
+        return events.prepareEventBinding(pathString, name, node) ||
+               prepareBinding.call(syntax, pathString, name, node);
+      };
+      return syntax;
+    }
+
+  });
+
+})();
diff --git a/bower_components/polymer/polymer.js.map b/bower_components/polymer/polymer.js.map
deleted file mode 100644
index bf3d54d..0000000
--- a/bower_components/polymer/polymer.js.map
+++ /dev/null
@@ -1 +0,0 @@
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* @license\n * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n */\nwindow.PolymerGestures = {};\n","/*\n * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n */\n\n(function(scope) {\n  var target = {\n    shadow: function(inEl) {\n      if (inEl) {\n        return inEl.shadowRoot || inEl.webkitShadowRoot;\n      }\n    },\n    canTarget: function(shadow) {\n      return shadow && Boolean(shadow.elementFromPoint);\n    },\n    targetingShadow: function(inEl) {\n      var s = this.shadow(inEl);\n      if (this.canTarget(s)) {\n        return s;\n      }\n    },\n    olderShadow: function(shadow) {\n      var os = shadow.olderShadowRoot;\n      if (!os) {\n        var se = shadow.querySelector('shadow');\n        if (se) {\n          os = se.olderShadowRoot;\n        }\n      }\n      return os;\n    },\n    allShadows: function(element) {\n      var shadows = [], s = this.shadow(element);\n      while(s) {\n        shadows.push(s);\n        s = this.olderShadow(s);\n      }\n      return shadows;\n    },\n    searchRoot: function(inRoot, x, y) {\n      if (inRoot) {\n        var t = inRoot.elementFromPoint(x, y);\n        var st, sr, os;\n        // is element a shadow host?\n        sr = this.targetingShadow(t);\n        while (sr) {\n          // find the the element inside the shadow root\n          st = sr.elementFromPoint(x, y);\n          if (!st) {\n            // check for older shadows\n            sr = this.olderShadow(sr);\n          } else {\n            // shadowed element may contain a shadow root\n            var ssr = this.targetingShadow(st);\n            return this.searchRoot(ssr, x, y) || st;\n          }\n        }\n        // light dom element is the target\n        return t;\n      }\n    },\n    owner: function(element) {\n      if (!element) {\n        return document;\n      }\n      var s = element;\n      // walk up until you hit the shadow root or document\n      while (s.parentNode) {\n        s = s.parentNode;\n      }\n      // the owner element is expected to be a Document or ShadowRoot\n      if (s.nodeType != Node.DOCUMENT_NODE && s.nodeType != Node.DOCUMENT_FRAGMENT_NODE) {\n        s = document;\n      }\n      return s;\n    },\n    findTarget: function(inEvent) {\n      var x = inEvent.clientX, y = inEvent.clientY;\n      // if the listener is in the shadow root, it is much faster to start there\n      var s = this.owner(inEvent.target);\n      // if x, y is not in this root, fall back to document search\n      if (!s.elementFromPoint(x, y)) {\n        s = document;\n      }\n      return this.searchRoot(s, x, y);\n    },\n    LCA: function(a, b) {\n      if (a === b) {\n        return a;\n      }\n      // fast case, a is a direct descendant of b or vice versa\n      if (a.contains) {\n        if (a.contains(b)) {\n          return a;\n        }\n        if (b.contains(a)) {\n          return b;\n        }\n      }\n      var adepth = this.depth(a);\n      var bdepth = this.depth(b);\n      var d = adepth - bdepth;\n      if (d > 0) {\n        a = this.walk(a, d);\n      } else {\n        b = this.walk(b, -d);\n      }\n      while(a && b && a !== b) {\n        a = this.walk(a, 1);\n        b = this.walk(b, 1);\n      }\n      return a;\n    },\n    walk: function(n, u) {\n      for (var i = 0; n && (i < u); i++) {\n        n = n.parentNode || n.host;\n      }\n      return n;\n    },\n    depth: function(n) {\n      var d = 0;\n      while(n) {\n        d++;\n        n = n.parentNode || n.host;\n      }\n      return d;\n    },\n    deepContains: function(a, b) {\n      var common = this.LCA(a, b);\n      // if a is the common ancestor, it must \"deeply\" contain b\n      return common === a;\n    },\n    insideNode: function(node, x, y) {\n      var rect = node.getBoundingClientRect();\n      return (rect.left <= x) && (x <= rect.right) && (rect.top <= y) && (y <= rect.bottom);\n    }\n  };\n  scope.targetFinding = target;\n  /**\n   * Given an event, finds the \"deepest\" node that could have been the original target before ShadowDOM retargetting\n   *\n   * @param {Event} Event An event object with clientX and clientY properties\n   * @return {Element} The probable event origninator\n   */\n  scope.findTarget = target.findTarget.bind(target);\n  /**\n   * Determines if the \"container\" node deeply contains the \"containee\" node, including situations where the \"containee\" is contained by one or more ShadowDOM\n   * roots.\n   *\n   * @param {Node} container\n   * @param {Node} containee\n   * @return {Boolean}\n   */\n  scope.deepContains = target.deepContains.bind(target);\n\n  /**\n   * Determines if the x/y position is inside the given node.\n   *\n   * Example:\n   *\n   *     function upHandler(event) {\n   *       var innode = PolymerGestures.insideNode(event.target, event.clientX, event.clientY);\n   *       if (innode) {\n   *         // wait for tap?\n   *       } else {\n   *         // tap will never happen\n   *       }\n   *     }\n   *\n   * @param {Node} node\n   * @param {Number} x Screen X position\n   * @param {Number} y screen Y position\n   * @return {Boolean}\n   */\n  scope.insideNode = target.insideNode;\n\n})(window.PolymerGestures);\n","/*\n *\n * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n */\n\n(function() {\n  function shadowSelector(v) {\n    return 'body /deep/ ' + selector(v);\n  }\n  function selector(v) {\n    return '[touch-action=\"' + v + '\"]';\n  }\n  function rule(v) {\n    return '{ -ms-touch-action: ' + v + '; touch-action: ' + v + ';}';\n  }\n  var attrib2css = [\n    'none',\n    'auto',\n    'pan-x',\n    'pan-y',\n    {\n      rule: 'pan-x pan-y',\n      selectors: [\n        'pan-x pan-y',\n        'pan-y pan-x'\n      ]\n    }\n  ];\n  var styles = '';\n  // only install stylesheet if the browser has touch action support\n  var head = document.head;\n  var hasTouchAction = typeof document.head.style.touchAction === 'string';\n  // only add shadow selectors if shadowdom is supported\n  var hasShadowRoot = !window.ShadowDOMPolyfill && document.head.createShadowRoot;\n\n  if (hasTouchAction) {\n    attrib2css.forEach(function(r) {\n      if (String(r) === r) {\n        styles += selector(r) + rule(r) + '\\n';\n        if (hasShadowRoot) {\n          styles += shadowSelector(r) + rule(r) + '\\n';\n        }\n      } else {\n        styles += r.selectors.map(selector) + rule(r.rule) + '\\n';\n        if (hasShadowRoot) {\n          styles += r.selectors.map(shadowSelector) + rule(r.rule) + '\\n';\n        }\n      }\n    });\n\n    var el = document.createElement('style');\n    el.textContent = styles;\n    document.head.appendChild(el);\n  }\n})();\n","/*\n * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n */\n\n/**\n * This is the constructor for new PointerEvents.\n *\n * New Pointer Events must be given a type, and an optional dictionary of\n * initialization properties.\n *\n * Due to certain platform requirements, events returned from the constructor\n * identify as MouseEvents.\n *\n * @constructor\n * @param {String} inType The type of the event to create.\n * @param {Object} [inDict] An optional dictionary of initial event properties.\n * @return {Event} A new PointerEvent of type `inType` and initialized with properties from `inDict`.\n */\n(function(scope) {\n\n  var MOUSE_PROPS = [\n    'bubbles',\n    'cancelable',\n    'view',\n    'detail',\n    'screenX',\n    'screenY',\n    'clientX',\n    'clientY',\n    'ctrlKey',\n    'altKey',\n    'shiftKey',\n    'metaKey',\n    'button',\n    'relatedTarget',\n    'pageX',\n    'pageY'\n  ];\n\n  var MOUSE_DEFAULTS = [\n    false,\n    false,\n    null,\n    null,\n    0,\n    0,\n    0,\n    0,\n    false,\n    false,\n    false,\n    false,\n    0,\n    null,\n    0,\n    0\n  ];\n\n  var NOP_FACTORY = function(){ return function(){}; };\n\n  var eventFactory = {\n    // TODO(dfreedm): this is overridden by tap recognizer, needs review\n    preventTap: NOP_FACTORY,\n    makeBaseEvent: function(inType, inDict) {\n      var e = document.createEvent('Event');\n      e.initEvent(inType, inDict.bubbles || false, inDict.cancelable || false);\n      e.preventTap = eventFactory.preventTap(e);\n      return e;\n    },\n    makeGestureEvent: function(inType, inDict) {\n      inDict = inDict || Object.create(null);\n\n      var e = this.makeBaseEvent(inType, inDict);\n      for (var i = 0, keys = Object.keys(inDict), k; i < keys.length; i++) {\n        k = keys[i];\n        e[k] = inDict[k];\n      }\n      return e;\n    },\n    makePointerEvent: function(inType, inDict) {\n      inDict = inDict || Object.create(null);\n\n      var e = this.makeBaseEvent(inType, inDict);\n      // define inherited MouseEvent properties\n      for(var i = 0, p; i < MOUSE_PROPS.length; i++) {\n        p = MOUSE_PROPS[i];\n        e[p] = inDict[p] || MOUSE_DEFAULTS[i];\n      }\n      e.buttons = inDict.buttons || 0;\n\n      // Spec requires that pointers without pressure specified use 0.5 for down\n      // state and 0 for up state.\n      var pressure = 0;\n      if (inDict.pressure) {\n        pressure = inDict.pressure;\n      } else {\n        pressure = e.buttons ? 0.5 : 0;\n      }\n\n      // add x/y properties aliased to clientX/Y\n      e.x = e.clientX;\n      e.y = e.clientY;\n\n      // define the properties of the PointerEvent interface\n      e.pointerId = inDict.pointerId || 0;\n      e.width = inDict.width || 0;\n      e.height = inDict.height || 0;\n      e.pressure = pressure;\n      e.tiltX = inDict.tiltX || 0;\n      e.tiltY = inDict.tiltY || 0;\n      e.pointerType = inDict.pointerType || '';\n      e.hwTimestamp = inDict.hwTimestamp || 0;\n      e.isPrimary = inDict.isPrimary || false;\n      return e;\n    }\n  };\n\n  scope.eventFactory = eventFactory;\n})(window.PolymerGestures);\n","/*\n * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n */\n\n/**\n * This module implements an map of pointer states\n */\n(function(scope) {\n  var USE_MAP = window.Map && window.Map.prototype.forEach;\n  var POINTERS_FN = function(){ return this.size; };\n  function PointerMap() {\n    if (USE_MAP) {\n      var m = new Map();\n      m.pointers = POINTERS_FN;\n      return m;\n    } else {\n      this.keys = [];\n      this.values = [];\n    }\n  }\n\n  PointerMap.prototype = {\n    set: function(inId, inEvent) {\n      var i = this.keys.indexOf(inId);\n      if (i > -1) {\n        this.values[i] = inEvent;\n      } else {\n        this.keys.push(inId);\n        this.values.push(inEvent);\n      }\n    },\n    has: function(inId) {\n      return this.keys.indexOf(inId) > -1;\n    },\n    'delete': function(inId) {\n      var i = this.keys.indexOf(inId);\n      if (i > -1) {\n        this.keys.splice(i, 1);\n        this.values.splice(i, 1);\n      }\n    },\n    get: function(inId) {\n      var i = this.keys.indexOf(inId);\n      return this.values[i];\n    },\n    clear: function() {\n      this.keys.length = 0;\n      this.values.length = 0;\n    },\n    // return value, key, map\n    forEach: function(callback, thisArg) {\n      this.values.forEach(function(v, i) {\n        callback.call(thisArg, v, this.keys[i], this);\n      }, this);\n    },\n    pointers: function() {\n      return this.keys.length;\n    }\n  };\n\n  scope.PointerMap = PointerMap;\n})(window.PolymerGestures);\n","/*\n * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n */\n\n(function(scope) {\n  var CLONE_PROPS = [\n    // MouseEvent\n    'bubbles',\n    'cancelable',\n    'view',\n    'detail',\n    'screenX',\n    'screenY',\n    'clientX',\n    'clientY',\n    'ctrlKey',\n    'altKey',\n    'shiftKey',\n    'metaKey',\n    'button',\n    'relatedTarget',\n    // DOM Level 3\n    'buttons',\n    // PointerEvent\n    'pointerId',\n    'width',\n    'height',\n    'pressure',\n    'tiltX',\n    'tiltY',\n    'pointerType',\n    'hwTimestamp',\n    'isPrimary',\n    // event instance\n    'type',\n    'target',\n    'currentTarget',\n    'which',\n    'pageX',\n    'pageY',\n    'timeStamp',\n    // gesture addons\n    'preventTap',\n    'tapPrevented'\n  ];\n\n  var CLONE_DEFAULTS = [\n    // MouseEvent\n    false,\n    false,\n    null,\n    null,\n    0,\n    0,\n    0,\n    0,\n    false,\n    false,\n    false,\n    false,\n    0,\n    null,\n    // DOM Level 3\n    0,\n    // PointerEvent\n    0,\n    0,\n    0,\n    0,\n    0,\n    0,\n    '',\n    0,\n    false,\n    // event instance\n    '',\n    null,\n    null,\n    0,\n    0,\n    0,\n    0,\n    function(){},\n    false\n  ];\n\n  var HAS_SVG_INSTANCE = (typeof SVGElementInstance !== 'undefined');\n\n  var eventFactory = scope.eventFactory;\n  /**\n   * This module is for normalizing events. Mouse and Touch events will be\n   * collected here, and fire PointerEvents that have the same semantics, no\n   * matter the source.\n   * Events fired:\n   *   - pointerdown: a pointing is added\n   *   - pointerup: a pointer is removed\n   *   - pointermove: a pointer is moved\n   *   - pointerover: a pointer crosses into an element\n   *   - pointerout: a pointer leaves an element\n   *   - pointercancel: a pointer will no longer generate events\n   */\n  var dispatcher = {\n    pointermap: new scope.PointerMap(),\n    eventMap: Object.create(null),\n    // Scope objects for native events.\n    // This exists for ease of testing.\n    eventSources: Object.create(null),\n    eventSourceList: [],\n    gestures: [],\n    gestureQueue: [],\n    /**\n     * Add a new event source that will generate pointer events.\n     *\n     * `inSource` must contain an array of event names named `events`, and\n     * functions with the names specified in the `events` array.\n     * @param {string} name A name for the event source\n     * @param {Object} source A new source of platform events.\n     */\n    registerSource: function(name, source) {\n      var s = source;\n      var newEvents = s.events;\n      if (newEvents) {\n        newEvents.forEach(function(e) {\n          if (s[e]) {\n            this.eventMap[e] = s[e].bind(s);\n          }\n        }, this);\n        this.eventSources[name] = s;\n        this.eventSourceList.push(s);\n      }\n    },\n    registerGesture: function(name, source) {\n      this.gestures.push(source);\n    },\n    register: function(element) {\n      var l = this.eventSourceList.length;\n      for (var i = 0, es; (i < l) && (es = this.eventSourceList[i]); i++) {\n        // call eventsource register\n        es.register.call(es, element);\n      }\n    },\n    unregister: function(element) {\n      var l = this.eventSourceList.length;\n      for (var i = 0, es; (i < l) && (es = this.eventSourceList[i]); i++) {\n        // call eventsource register\n        es.unregister.call(es, element);\n      }\n    },\n    // EVENTS\n    down: function(inEvent) {\n      this.fireEvent('down', inEvent);\n    },\n    move: function(inEvent) {\n      // pipe move events into gesture queue directly\n      inEvent.type = 'move';\n      this.fillGestureQueue(inEvent);\n    },\n    up: function(inEvent) {\n      this.fireEvent('up', inEvent);\n    },\n    // LISTENER LOGIC\n    eventHandler: function(inEvent) {\n      // This is used to prevent multiple dispatch of events from\n      // platform events. This can happen when two elements in different scopes\n      // are set up to create pointer events, which is relevant to Shadow DOM.\n      if (inEvent._handledByPG) {\n        return;\n      }\n      var type = inEvent.type;\n      var fn = this.eventMap && this.eventMap[type];\n      if (fn) {\n        fn(inEvent);\n      }\n      inEvent._handledByPG = true;\n    },\n    // set up event listeners\n    listen: function(target, events) {\n      events.forEach(function(e) {\n        this.addEvent(target, e);\n      }, this);\n    },\n    // remove event listeners\n    unlisten: function(target, events) {\n      events.forEach(function(e) {\n        this.removeEvent(target, e);\n      }, this);\n    },\n    addEvent: function(target, eventName) {\n      target.addEventListener(eventName, this.boundHandler);\n    },\n    removeEvent: function(target, eventName) {\n      target.removeEventListener(eventName, this.boundHandler);\n    },\n    // EVENT CREATION AND TRACKING\n    /**\n     * Creates a new Event of type `inType`, based on the information in\n     * `inEvent`.\n     *\n     * @param {string} inType A string representing the type of event to create\n     * @param {Event} inEvent A platform event with a target\n     * @return {Event} A PointerEvent of type `inType`\n     */\n    makeEvent: function(inType, inEvent) {\n      var e = eventFactory.makePointerEvent(inType, inEvent);\n      e.preventDefault = inEvent.preventDefault;\n      e._target = e._target || inEvent.target;\n      return e;\n    },\n    // make and dispatch an event in one call\n    fireEvent: function(inType, inEvent) {\n      var e = this.makeEvent(inType, inEvent);\n      return this.dispatchEvent(e);\n    },\n    /**\n     * Returns a snapshot of inEvent, with writable properties.\n     *\n     * @param {Event} inEvent An event that contains properties to copy.\n     * @return {Object} An object containing shallow copies of `inEvent`'s\n     *    properties.\n     */\n    cloneEvent: function(inEvent) {\n      var eventCopy = Object.create(null), p;\n      for (var i = 0; i < CLONE_PROPS.length; i++) {\n        p = CLONE_PROPS[i];\n        eventCopy[p] = inEvent[p] || CLONE_DEFAULTS[i];\n        // Work around SVGInstanceElement shadow tree\n        // Return the <use> element that is represented by the instance for Safari, Chrome, IE.\n        // This is the behavior implemented by Firefox.\n        if (HAS_SVG_INSTANCE && (p === 'target' || p === 'relatedTarget')) {\n          if (eventCopy[p] instanceof SVGElementInstance) {\n            eventCopy[p] = eventCopy[p].correspondingUseElement;\n          }\n        }\n      }\n      // keep the semantics of preventDefault\n      eventCopy.preventDefault = inEvent.preventDefault;\n      return eventCopy;\n    },\n    /**\n     * Dispatches the event to its target.\n     *\n     * @param {Event} inEvent The event to be dispatched.\n     * @return {Boolean} True if an event handler returns true, false otherwise.\n     */\n    dispatchEvent: function(inEvent) {\n      var t = inEvent._target;\n      if (t) {\n        t.dispatchEvent(inEvent);\n        // clone the event for the gesture system to process\n        // clone after dispatch to pick up gesture prevention code\n        var clone = this.cloneEvent(inEvent);\n        clone.target = inEvent._target;\n        this.fillGestureQueue(clone);\n      }\n    },\n    gestureTrigger: function() {\n      // process the gesture queue\n      for (var i = 0, e; i < this.gestureQueue.length; i++) {\n        e = this.gestureQueue[i];\n        for (var j = 0, g; j < this.gestures.length; j++) {\n          g = this.gestures[j];\n          if (g.events.indexOf(e.type) >= 0) {\n            g[e.type].call(g, e);\n          }\n        }\n      }\n      this.gestureQueue.length = 0;\n    },\n    fillGestureQueue: function(ev) {\n      // only trigger the gesture queue once\n      if (!this.gestureQueue.length) {\n        requestAnimationFrame(this.boundGestureTrigger);\n      }\n      this.gestureQueue.push(ev);\n    }\n  };\n  dispatcher.boundHandler = dispatcher.eventHandler.bind(dispatcher);\n  dispatcher.boundGestureTrigger = dispatcher.gestureTrigger.bind(dispatcher);\n  scope.dispatcher = dispatcher;\n  scope.register = dispatcher.register.bind(dispatcher);\n  scope.unregister = dispatcher.unregister.bind(dispatcher);\n})(window.PolymerGestures);\n","/*\n * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n */\n\n/**\n * This module uses Mutation Observers to dynamically adjust which nodes will\n * generate Pointer Events.\n *\n * All nodes that wish to generate Pointer Events must have the attribute\n * `touch-action` set to `none`.\n */\n(function(scope) {\n  var forEach = Array.prototype.forEach.call.bind(Array.prototype.forEach);\n  var map = Array.prototype.map.call.bind(Array.prototype.map);\n  var toArray = Array.prototype.slice.call.bind(Array.prototype.slice);\n  var filter = Array.prototype.filter.call.bind(Array.prototype.filter);\n  var MO = window.MutationObserver || window.WebKitMutationObserver;\n  var SELECTOR = '[touch-action]';\n  var OBSERVER_INIT = {\n    subtree: true,\n    childList: true,\n    attributes: true,\n    attributeOldValue: true,\n    attributeFilter: ['touch-action']\n  };\n\n  function Installer(add, remove, changed, binder) {\n    this.addCallback = add.bind(binder);\n    this.removeCallback = remove.bind(binder);\n    this.changedCallback = changed.bind(binder);\n    if (MO) {\n      this.observer = new MO(this.mutationWatcher.bind(this));\n    }\n  }\n\n  Installer.prototype = {\n    watchSubtree: function(target) {\n      // Only watch scopes that can target find, as these are top-level.\n      // Otherwise we can see duplicate additions and removals that add noise.\n      //\n      // TODO(dfreedman): For some instances with ShadowDOMPolyfill, we can see\n      // a removal without an insertion when a node is redistributed among\n      // shadows. Since it all ends up correct in the document, watching only\n      // the document will yield the correct mutations to watch.\n      if (scope.targetFinding.canTarget(target)) {\n        this.observer.observe(target, OBSERVER_INIT);\n      }\n    },\n    enableOnSubtree: function(target) {\n      this.watchSubtree(target);\n      if (target === document && document.readyState !== 'complete') {\n        this.installOnLoad();\n      } else {\n        this.installNewSubtree(target);\n      }\n    },\n    installNewSubtree: function(target) {\n      forEach(this.findElements(target), this.addElement, this);\n    },\n    findElements: function(target) {\n      if (target.querySelectorAll) {\n        return target.querySelectorAll(SELECTOR);\n      }\n      return [];\n    },\n    removeElement: function(el) {\n      this.removeCallback(el);\n    },\n    addElement: function(el) {\n      this.addCallback(el);\n    },\n    elementChanged: function(el, oldValue) {\n      this.changedCallback(el, oldValue);\n    },\n    concatLists: function(accum, list) {\n      return accum.concat(toArray(list));\n    },\n    // register all touch-action = none nodes on document load\n    installOnLoad: function() {\n      document.addEventListener('readystatechange', function() {\n        if (document.readyState === 'complete') {\n          this.installNewSubtree(document);\n        }\n      }.bind(this));\n    },\n    isElement: function(n) {\n      return n.nodeType === Node.ELEMENT_NODE;\n    },\n    flattenMutationTree: function(inNodes) {\n      // find children with touch-action\n      var tree = map(inNodes, this.findElements, this);\n      // make sure the added nodes are accounted for\n      tree.push(filter(inNodes, this.isElement));\n      // flatten the list\n      return tree.reduce(this.concatLists, []);\n    },\n    mutationWatcher: function(mutations) {\n      mutations.forEach(this.mutationHandler, this);\n    },\n    mutationHandler: function(m) {\n      if (m.type === 'childList') {\n        var added = this.flattenMutationTree(m.addedNodes);\n        added.forEach(this.addElement, this);\n        var removed = this.flattenMutationTree(m.removedNodes);\n        removed.forEach(this.removeElement, this);\n      } else if (m.type === 'attributes') {\n        this.elementChanged(m.target, m.oldValue);\n      }\n    }\n  };\n\n  if (!MO) {\n    Installer.prototype.watchSubtree = function(){\n      console.warn('PolymerGestures: MutationObservers not found, touch-action will not be dynamically detected');\n    };\n  }\n\n  scope.Installer = Installer;\n})(window.PolymerGestures);\n","/*\n * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n */\n\n(function (scope) {\n  var dispatcher = scope.dispatcher;\n  var pointermap = dispatcher.pointermap;\n  // radius around touchend that swallows mouse events\n  var DEDUP_DIST = 25;\n\n  var WHICH_TO_BUTTONS = [0, 1, 4, 2];\n\n  var HAS_BUTTONS = false;\n  try {\n    HAS_BUTTONS = new MouseEvent('test', {buttons: 1}).buttons === 1;\n  } catch (e) {}\n\n  // handler block for native mouse events\n  var mouseEvents = {\n    POINTER_ID: 1,\n    POINTER_TYPE: 'mouse',\n    events: [\n      'mousedown',\n      'mousemove',\n      'mouseup',\n    ],\n    register: function(target) {\n      dispatcher.listen(target, this.events);\n    },\n    unregister: function(target) {\n      dispatcher.unlisten(target, this.events);\n    },\n    lastTouches: [],\n    // collide with the global mouse listener\n    isEventSimulatedFromTouch: function(inEvent) {\n      var lts = this.lastTouches;\n      var x = inEvent.clientX, y = inEvent.clientY;\n      for (var i = 0, l = lts.length, t; i < l && (t = lts[i]); i++) {\n        // simulated mouse events will be swallowed near a primary touchend\n        var dx = Math.abs(x - t.x), dy = Math.abs(y - t.y);\n        if (dx <= DEDUP_DIST && dy <= DEDUP_DIST) {\n          return true;\n        }\n      }\n    },\n    prepareEvent: function(inEvent) {\n      var e = dispatcher.cloneEvent(inEvent);\n      e.pointerId = this.POINTER_ID;\n      e.isPrimary = true;\n      e.pointerType = this.POINTER_TYPE;\n      if (!HAS_BUTTONS) {\n        e.buttons = WHICH_TO_BUTTONS[e.which] || 0;\n      }\n      return e;\n    },\n    mousedown: function(inEvent) {\n      if (!this.isEventSimulatedFromTouch(inEvent)) {\n        var p = pointermap.has(this.POINTER_ID);\n        // TODO(dfreedman) workaround for some elements not sending mouseup\n        // http://crbug/149091\n        if (p) {\n          this.mouseup(inEvent);\n        }\n        var e = this.prepareEvent(inEvent);\n        pointermap.set(this.POINTER_ID, inEvent.target);\n        dispatcher.down(e);\n      }\n    },\n    mousemove: function(inEvent) {\n      if (!this.isEventSimulatedFromTouch(inEvent)) {\n        var e = this.prepareEvent(inEvent);\n        e.target = pointermap.get(this.POINTER_ID);\n        dispatcher.move(e);\n      }\n    },\n    mouseup: function(inEvent) {\n      if (!this.isEventSimulatedFromTouch(inEvent)) {\n        var e = this.prepareEvent(inEvent);\n        e.target = pointermap.get(this.POINTER_ID);\n        e.relatedTarget = inEvent.target;\n        dispatcher.up(e);\n        this.cleanupMouse();\n      }\n    },\n    cleanupMouse: function() {\n      pointermap['delete'](this.POINTER_ID);\n    }\n  };\n\n  scope.mouseEvents = mouseEvents;\n})(window.PolymerGestures);\n","/*\n * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n */\n\n(function(scope) {\n  var dispatcher = scope.dispatcher;\n  var allShadows = scope.targetFinding.allShadows.bind(scope.targetFinding);\n  var pointermap = dispatcher.pointermap;\n  var touchMap = Array.prototype.map.call.bind(Array.prototype.map);\n  // This should be long enough to ignore compat mouse events made by touch\n  var DEDUP_TIMEOUT = 2500;\n  var CLICK_COUNT_TIMEOUT = 200;\n  var ATTRIB = 'touch-action';\n  var INSTALLER;\n  var HAS_TOUCH_ACTION = typeof document.head.style.touchAction === 'string';\n\n  // handler block for native touch events\n  var touchEvents = {\n    events: [\n      'touchstart',\n      'touchmove',\n      'touchend',\n      'touchcancel'\n    ],\n    register: function(target) {\n      if (HAS_TOUCH_ACTION) {\n        dispatcher.listen(target, this.events);\n      } else {\n        INSTALLER.enableOnSubtree(target);\n      }\n    },\n    unregister: function(target) {\n      if (HAS_TOUCH_ACTION) {\n        dispatcher.unlisten(target, this.events);\n      } else {\n        // TODO(dfreedman): is it worth it to disconnect the MO?\n      }\n    },\n    elementAdded: function(el) {\n      var a = el.getAttribute(ATTRIB);\n      var st = this.touchActionToScrollType(a);\n      if (st) {\n        el._scrollType = st;\n        dispatcher.listen(el, this.events);\n        // set touch-action on shadows as well\n        allShadows(el).forEach(function(s) {\n          s._scrollType = st;\n          dispatcher.listen(s, this.events);\n        }, this);\n      }\n    },\n    elementRemoved: function(el) {\n      el._scrollType = undefined;\n      dispatcher.unlisten(el, this.events);\n      // remove touch-action from shadow\n      allShadows(el).forEach(function(s) {\n        s._scrollType = undefined;\n        dispatcher.unlisten(s, this.events);\n      }, this);\n    },\n    elementChanged: function(el, oldValue) {\n      var a = el.getAttribute(ATTRIB);\n      var st = this.touchActionToScrollType(a);\n      var oldSt = this.touchActionToScrollType(oldValue);\n      // simply update scrollType if listeners are already established\n      if (st && oldSt) {\n        el._scrollType = st;\n        allShadows(el).forEach(function(s) {\n          s._scrollType = st;\n        }, this);\n      } else if (oldSt) {\n        this.elementRemoved(el);\n      } else if (st) {\n        this.elementAdded(el);\n      }\n    },\n    scrollTypes: {\n      EMITTER: 'none',\n      XSCROLLER: 'pan-x',\n      YSCROLLER: 'pan-y',\n      SCROLLER: /^(?:pan-x pan-y)|(?:pan-y pan-x)|auto$/\n    },\n    touchActionToScrollType: function(touchAction) {\n      var t = touchAction;\n      var st = this.scrollTypes;\n      if (t === 'none') {\n        return 'none';\n      } else if (t === st.XSCROLLER) {\n        return 'X';\n      } else if (t === st.YSCROLLER) {\n        return 'Y';\n      } else if (st.SCROLLER.exec(t)) {\n        return 'XY';\n      }\n    },\n    POINTER_TYPE: 'touch',\n    firstTouch: null,\n    isPrimaryTouch: function(inTouch) {\n      return this.firstTouch === inTouch.identifier;\n    },\n    setPrimaryTouch: function(inTouch) {\n      // set primary touch if there no pointers, or the only pointer is the mouse\n      if (pointermap.pointers() === 0 || (pointermap.pointers() === 1 && pointermap.has(1))) {\n        this.firstTouch = inTouch.identifier;\n        this.firstXY = {X: inTouch.clientX, Y: inTouch.clientY};\n        this.scrolling = false;\n        this.cancelResetClickCount();\n      }\n    },\n    removePrimaryPointer: function(inPointer) {\n      if (inPointer.isPrimary) {\n        this.firstTouch = null;\n        this.firstXY = null;\n        this.resetClickCount();\n      }\n    },\n    clickCount: 0,\n    resetId: null,\n    resetClickCount: function() {\n      var fn = function() {\n        this.clickCount = 0;\n        this.resetId = null;\n      }.bind(this);\n      this.resetId = setTimeout(fn, CLICK_COUNT_TIMEOUT);\n    },\n    cancelResetClickCount: function() {\n      if (this.resetId) {\n        clearTimeout(this.resetId);\n      }\n    },\n    typeToButtons: function(type) {\n      var ret = 0;\n      if (type === 'touchstart' || type === 'touchmove') {\n        ret = 1;\n      }\n      return ret;\n    },\n    findTarget: function(touch, id) {\n      if (this.currentTouchEvent.type === 'touchstart') {\n        return scope.findTarget(touch);\n      }\n      // reuse target we found in touchstart\n      return pointermap.get(id);\n    },\n    touchToPointer: function(inTouch) {\n      var cte = this.currentTouchEvent;\n      var e = dispatcher.cloneEvent(inTouch);\n      // Spec specifies that pointerId 1 is reserved for Mouse.\n      // Touch identifiers can start at 0.\n      // Add 2 to the touch identifier for compatibility.\n      var id = e.pointerId = inTouch.identifier + 2;\n      e.target = this.findTarget(inTouch, id);\n      e.bubbles = true;\n      e.cancelable = true;\n      e.detail = this.clickCount;\n      e.buttons = this.typeToButtons(cte.type);\n      e.width = inTouch.webkitRadiusX || inTouch.radiusX || 0;\n      e.height = inTouch.webkitRadiusY || inTouch.radiusY || 0;\n      e.pressure = inTouch.webkitForce || inTouch.force || 0.5;\n      e.isPrimary = this.isPrimaryTouch(inTouch);\n      e.pointerType = this.POINTER_TYPE;\n      // forward touch preventDefaults\n      var self = this;\n      e.preventDefault = function() {\n        self.scrolling = false;\n        self.firstXY = null;\n        cte.preventDefault();\n      };\n      return e;\n    },\n    processTouches: function(inEvent, inFunction) {\n      var tl = inEvent.changedTouches;\n      this.currentTouchEvent = inEvent;\n      for (var i = 0, t; i < tl.length; i++) {\n        t = tl[i];\n        inFunction.call(this, this.touchToPointer(t));\n      }\n    },\n    // For single axis scrollers, determines whether the element should emit\n    // pointer events or behave as a scroller\n    shouldScroll: function(inEvent) {\n      if (this.firstXY) {\n        var ret;\n        var scrollAxis = inEvent.currentTarget._scrollType;\n        if (scrollAxis === 'none') {\n          // this element is a touch-action: none, should never scroll\n          ret = false;\n        } else if (scrollAxis === 'XY') {\n          // this element should always scroll\n          ret = true;\n        } else {\n          var t = inEvent.changedTouches[0];\n          // check the intended scroll axis, and other axis\n          var a = scrollAxis;\n          var oa = scrollAxis === 'Y' ? 'X' : 'Y';\n          var da = Math.abs(t['client' + a] - this.firstXY[a]);\n          var doa = Math.abs(t['client' + oa] - this.firstXY[oa]);\n          // if delta in the scroll axis > delta other axis, scroll instead of\n          // making events\n          ret = da >= doa;\n        }\n        this.firstXY = null;\n        return ret;\n      }\n    },\n    findTouch: function(inTL, inId) {\n      for (var i = 0, l = inTL.length, t; i < l && (t = inTL[i]); i++) {\n        if (t.identifier === inId) {\n          return true;\n        }\n      }\n    },\n    // In some instances, a touchstart can happen without a touchend. This\n    // leaves the pointermap in a broken state.\n    // Therefore, on every touchstart, we remove the touches that did not fire a\n    // touchend event.\n    // To keep state globally consistent, we fire a\n    // pointercancel for this \"abandoned\" touch\n    vacuumTouches: function(inEvent) {\n      var tl = inEvent.touches;\n      // pointermap.pointers() should be < tl.length here, as the touchstart has not\n      // been processed yet.\n      if (pointermap.pointers() >= tl.length) {\n        var d = [];\n        pointermap.forEach(function(value, key) {\n          // Never remove pointerId == 1, which is mouse.\n          // Touch identifiers are 2 smaller than their pointerId, which is the\n          // index in pointermap.\n          if (key !== 1 && !this.findTouch(tl, key - 2)) {\n            var p = value.out;\n            d.push(p);\n          }\n        }, this);\n        d.forEach(this.cancelOut, this);\n      }\n    },\n    touchstart: function(inEvent) {\n      this.vacuumTouches(inEvent);\n      this.setPrimaryTouch(inEvent.changedTouches[0]);\n      this.dedupSynthMouse(inEvent);\n      if (!this.scrolling) {\n        this.clickCount++;\n        this.processTouches(inEvent, this.down);\n      }\n    },\n    down: function(inPointer) {\n      var p = pointermap.set(inPointer.pointerId, inPointer.target);\n      dispatcher.down(inPointer);\n    },\n    touchmove: function(inEvent) {\n      if (HAS_TOUCH_ACTION) {\n        this.processTouches(inEvent, this.move);\n      } else {\n        if (!this.scrolling) {\n          if (this.shouldScroll(inEvent)) {\n            this.scrolling = true;\n            this.touchcancel(inEvent);\n          } else {\n            inEvent.preventDefault();\n            this.processTouches(inEvent, this.move);\n          }\n        }\n      }\n    },\n    move: function(inPointer) {\n      var pointer = pointermap.get(inPointer.pointerId);\n      // a finger drifted off the screen, ignore it\n      if (!pointer) {\n        return;\n      }\n      dispatcher.move(inPointer);\n    },\n    touchend: function(inEvent) {\n      this.dedupSynthMouse(inEvent);\n      this.processTouches(inEvent, this.up);\n    },\n    up: function(inPointer) {\n      if (!this.scrolling) {\n        inPointer.relatedTarget = scope.findTarget(inPointer);\n        dispatcher.up(inPointer);\n      }\n      this.cleanUpPointer(inPointer);\n    },\n    touchcancel: function(inEvent) {\n      this.processTouches(inEvent, this.up);\n    },\n    cleanUpPointer: function(inPointer) {\n      pointermap['delete'](inPointer.pointerId);\n      this.removePrimaryPointer(inPointer);\n    },\n    // prevent synth mouse events from creating pointer events\n    dedupSynthMouse: function(inEvent) {\n      var lts = scope.mouseEvents.lastTouches;\n      var t = inEvent.changedTouches[0];\n      // only the primary finger will synth mouse events\n      if (this.isPrimaryTouch(t)) {\n        // remember x/y of last touch\n        var lt = {x: t.clientX, y: t.clientY};\n        lts.push(lt);\n        var fn = (function(lts, lt){\n          var i = lts.indexOf(lt);\n          if (i > -1) {\n            lts.splice(i, 1);\n          }\n        }).bind(null, lts, lt);\n        setTimeout(fn, DEDUP_TIMEOUT);\n      }\n    }\n  };\n\n  if (!HAS_TOUCH_ACTION) {\n    INSTALLER = new scope.Installer(touchEvents.elementAdded, touchEvents.elementRemoved, touchEvents.elementChanged, touchEvents);\n  }\n\n  scope.touchEvents = touchEvents;\n})(window.PolymerGestures);\n","/*\n * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n */\n\n(function(scope) {\n  var dispatcher = scope.dispatcher;\n  var pointermap = dispatcher.pointermap;\n  var HAS_BITMAP_TYPE = window.MSPointerEvent && typeof window.MSPointerEvent.MSPOINTER_TYPE_MOUSE === 'number';\n  var msEvents = {\n    events: [\n      'MSPointerDown',\n      'MSPointerMove',\n      'MSPointerUp',\n      'MSPointerCancel',\n    ],\n    register: function(target) {\n      dispatcher.listen(target, this.events);\n    },\n    unregister: function(target) {\n      dispatcher.unlisten(target, this.events);\n    },\n    POINTER_TYPES: [\n      '',\n      'unavailable',\n      'touch',\n      'pen',\n      'mouse'\n    ],\n    prepareEvent: function(inEvent) {\n      var e = inEvent;\n      if (HAS_BITMAP_TYPE) {\n        e = dispatcher.cloneEvent(inEvent);\n        e.pointerType = this.POINTER_TYPES[inEvent.pointerType];\n      }\n      return e;\n    },\n    cleanup: function(id) {\n      pointermap['delete'](id);\n    },\n    MSPointerDown: function(inEvent) {\n      pointermap.set(inEvent.pointerId, inEvent.target);\n      var e = this.prepareEvent(inEvent);\n      dispatcher.down(e);\n    },\n    MSPointerMove: function(inEvent) {\n      var e = this.prepareEvent(inEvent);\n      e.target = pointermap.get(inEvent.pointerId);\n      dispatcher.move(e);\n    },\n    MSPointerUp: function(inEvent) {\n      var e = this.prepareEvent(inEvent);\n      e.target = pointermap.get(inEvent.pointerId);\n      e.relatedTarget = inEvent.target;\n      dispatcher.up(e);\n      this.cleanup(inEvent.pointerId);\n    },\n    MSPointerCancel: function(inEvent) {\n      this.MSPointerUp(inEvent);\n    }\n  };\n\n  scope.msEvents = msEvents;\n})(window.PolymerGestures);\n","/*\n * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n */\n\n(function(scope) {\n  var dispatcher = scope.dispatcher;\n  var pointermap = dispatcher.pointermap;\n  var pointerEvents = {\n    events: [\n      'pointerdown',\n      'pointermove',\n      'pointerup',\n      'pointercancel'\n    ],\n    prepareEvent: function(inEvent) {\n      return dispatcher.cloneEvent(inEvent);\n    },\n    register: function(target) {\n      dispatcher.listen(target, this.events);\n    },\n    unregister: function(target) {\n      dispatcher.unlisten(target, this.events);\n    },\n    cleanup: function(id) {\n      pointermap['delete'](id);\n    },\n    pointerdown: function(inEvent) {\n      pointermap.set(inEvent.pointerId, inEvent.target);\n      var e = this.prepareEvent(inEvent);\n      dispatcher.down(e);\n    },\n    pointermove: function(inEvent) {\n      var e = this.prepareEvent(inEvent);\n      e.target = pointermap.get(inEvent.pointerId);\n      dispatcher.move(e);\n    },\n    pointerup: function(inEvent) {\n      var e = this.prepareEvent(inEvent);\n      e.target = pointermap.get(inEvent.pointerId);\n      e.relatedTarget = inEvent.target;\n      dispatcher.up(e);\n      this.cleanup(inEvent.pointerId);\n    },\n    pointercancel: function(inEvent) {\n      this.pointerup(inEvent);\n    }\n  };\n\n  scope.pointerEvents = pointerEvents;\n})(window.PolymerGestures);\n","/*\n * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n */\n\n/**\n * This module contains the handlers for native platform events.\n * From here, the dispatcher is called to create unified pointer events.\n * Included are touch events (v1), mouse events, and MSPointerEvents.\n */\n(function(scope) {\n  var dispatcher = scope.dispatcher;\n\n  if (window.PointerEvent) {\n    dispatcher.registerSource('pointer', scope.pointerEvents);\n  } else if (window.navigator.msPointerEnabled) {\n    dispatcher.registerSource('ms', scope.msEvents);\n  } else {\n    dispatcher.registerSource('mouse', scope.mouseEvents);\n    if (window.ontouchstart !== undefined) {\n      dispatcher.registerSource('touch', scope.touchEvents);\n    }\n  }\n\n  dispatcher.register(document);\n})(window.PolymerGestures);\n","/*\n * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n */\n\n/**\n * This event denotes the beginning of a series of tracking events.\n *\n * @module PointerGestures\n * @submodule Events\n * @class trackstart\n */\n/**\n * Pixels moved in the x direction since trackstart.\n * @type Number\n * @property dx\n */\n/**\n * Pixes moved in the y direction since trackstart.\n * @type Number\n * @property dy\n */\n/**\n * Pixels moved in the x direction since the last track.\n * @type Number\n * @property ddx\n */\n/**\n * Pixles moved in the y direction since the last track.\n * @type Number\n * @property ddy\n */\n/**\n * The clientX position of the track gesture.\n * @type Number\n * @property clientX\n */\n/**\n * The clientY position of the track gesture.\n * @type Number\n * @property clientY\n */\n/**\n * The pageX position of the track gesture.\n * @type Number\n * @property pageX\n */\n/**\n * The pageY position of the track gesture.\n * @type Number\n * @property pageY\n */\n/**\n * The screenX position of the track gesture.\n * @type Number\n * @property screenX\n */\n/**\n * The screenY position of the track gesture.\n * @type Number\n * @property screenY\n */\n/**\n * The last x axis direction of the pointer.\n * @type Number\n * @property xDirection\n */\n/**\n * The last y axis direction of the pointer.\n * @type Number\n * @property yDirection\n */\n/**\n * A shared object between all tracking events.\n * @type Object\n * @property trackInfo\n */\n/**\n * The element currently under the pointer.\n * @type Element\n * @property relatedTarget\n */\n/**\n * The type of pointer that make the track gesture.\n * @type String\n * @property pointerType\n */\n/**\n *\n * This event fires for all pointer movement being tracked.\n *\n * @class track\n * @extends trackstart\n */\n/**\n * This event fires when the pointer is no longer being tracked.\n *\n * @class trackend\n * @extends trackstart\n */\n\n (function(scope) {\n   var dispatcher = scope.dispatcher;\n   var eventFactory = scope.eventFactory;\n   var pointermap = new scope.PointerMap();\n   var track = {\n     events: [\n       'down',\n       'move',\n       'up',\n     ],\n     WIGGLE_THRESHOLD: 4,\n     clampDir: function(inDelta) {\n       return inDelta > 0 ? 1 : -1;\n     },\n     calcPositionDelta: function(inA, inB) {\n       var x = 0, y = 0;\n       if (inA && inB) {\n         x = inB.pageX - inA.pageX;\n         y = inB.pageY - inA.pageY;\n       }\n       return {x: x, y: y};\n     },\n     fireTrack: function(inType, inEvent, inTrackingData) {\n       var t = inTrackingData;\n       var d = this.calcPositionDelta(t.downEvent, inEvent);\n       var dd = this.calcPositionDelta(t.lastMoveEvent, inEvent);\n       if (dd.x) {\n         t.xDirection = this.clampDir(dd.x);\n       }\n       if (dd.y) {\n         t.yDirection = this.clampDir(dd.y);\n       }\n       var e = eventFactory.makeGestureEvent(inType, {\n         bubbles: true,\n         cancelable: true,\n         dx: d.x,\n         dy: d.y,\n         ddx: dd.x,\n         ddy: dd.y,\n         x: inEvent.x,\n         y: inEvent.y,\n         clientX: inEvent.clientX,\n         clientY: inEvent.clientY,\n         pageX: inEvent.pageX,\n         pageY: inEvent.pageY,\n         screenX: inEvent.screenX,\n         screenY: inEvent.screenY,\n         xDirection: t.xDirection,\n         yDirection: t.yDirection,\n         trackInfo: t.trackInfo,\n         relatedTarget: inEvent.relatedTarget,\n         pointerType: inEvent.pointerType,\n         pointerId: inEvent.pointerId\n       });\n       t.downTarget.dispatchEvent(e);\n     },\n     down: function(inEvent) {\n       if (inEvent.isPrimary && (inEvent.pointerType === 'mouse' ? inEvent.buttons === 1 : true)) {\n         var p = {\n           downEvent: inEvent,\n           downTarget: inEvent.target,\n           trackInfo: {},\n           lastMoveEvent: null,\n           xDirection: 0,\n           yDirection: 0,\n           tracking: false\n         };\n         pointermap.set(inEvent.pointerId, p);\n       }\n     },\n     move: function(inEvent) {\n       var p = pointermap.get(inEvent.pointerId);\n       if (p) {\n         if (!p.tracking) {\n           var d = this.calcPositionDelta(p.downEvent, inEvent);\n           var move = d.x * d.x + d.y * d.y;\n           // start tracking only if finger moves more than WIGGLE_THRESHOLD\n           if (move > this.WIGGLE_THRESHOLD) {\n             p.tracking = true;\n             this.fireTrack('trackstart', p.downEvent, p);\n             this.fireTrack('track', inEvent, p);\n           }\n         } else {\n           this.fireTrack('track', inEvent, p);\n         }\n         p.lastMoveEvent = inEvent;\n       }\n     },\n     up: function(inEvent) {\n       var p = pointermap.get(inEvent.pointerId);\n       if (p) {\n         if (p.tracking) {\n           this.fireTrack('trackend', inEvent, p);\n         }\n         pointermap.delete(inEvent.pointerId);\n       }\n     }\n   };\n   dispatcher.registerGesture('track', track);\n })(window.PolymerGestures);\n","/*\n * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.\n * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\n * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\n * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\n * Code distributed by Google as part of the polymer project is also\n * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n */\n\n/**\n * This event is fired when a pointer quickly goes down and up, and is used to\n * denote activation.\n *\n * Any gesture event can prevent the tap event from being created by calling\n * `event.preventTap`.\n *\n * Any pointer event can prevent the tap by setting the `tapPrevented` property\n * on itself.\n *\n * @module PointerGestures\n * @submodule Events\n * @class tap\n */\n/**\n * X axis position of the tap.\n * @property x\n * @type Number\n */\n/**\n * Y axis position of the tap.\n * @property y\n * @type Number\n */\n/**\n * Type of the pointer that made the tap.\n * @property pointerType\n * @type String\n */\n(function(scope) {\n  var dispatcher = scope.dispatcher;\n  var eventFactory = scope.eventFactory;\n  var pointermap = new scope.PointerMap();\n  var tap = {\n    events: [\n      'down',\n      'up'\n    ],\n    down: function(inEvent) {\n      if (inEvent.isPrimary && !inEvent.tapPrevented) {\n        pointermap.set(inEvent.pointerId, {\n          target: inEvent.target,\n          buttons: inEvent.buttons,\n          x: inEvent.clientX,\n          y: inEvent.clientY\n        });\n      }\n    },\n    shouldTap: function(e, downState) {\n      if (e.pointerType === 'mouse') {\n        // only allow left click to tap for mouse\n        return downState.buttons === 1;\n      }\n      return true;\n    },\n    up: function(inEvent) {\n      var start = pointermap.get(inEvent.pointerId);\n      if (start && this.shouldTap(inEvent, start)) {\n        // up.relatedTarget is target currently under finger\n        var t = scope.targetFinding.LCA(start.target, inEvent.relatedTarget);\n        if (t) {\n          var e = eventFactory.makeGestureEvent('tap', {\n            bubbles: true,\n            cancelable: true,\n            x: inEvent.clientX,\n            y: inEvent.clientY,\n            detail: inEvent.detail,\n            pointerType: inEvent.pointerType,\n            pointerId: inEvent.pointerId,\n            altKey: inEvent.altKey,\n            ctrlKey: inEvent.ctrlKey,\n            metaKey: inEvent.metaKey,\n            shiftKey: inEvent.shiftKey\n          });\n          t.dispatchEvent(e);\n        }\n      }\n      pointermap.delete(inEvent.pointerId);\n    }\n  };\n  // patch eventFactory to remove id from tap's pointermap for preventTap calls\n  eventFactory.preventTap = function(e) {\n    return function() {\n      pointermap.delete(e.pointerId);\n    };\n  };\n  dispatcher.registerGesture('tap', tap);\n})(window.PolymerGestures);\n","/*\n  Copyright (C) 2013 Ariya Hidayat <ariya.hidayat@gmail.com>\n  Copyright (C) 2013 Thaddee Tyl <thaddee.tyl@gmail.com>\n  Copyright (C) 2012 Ariya Hidayat <ariya.hidayat@gmail.com>\n  Copyright (C) 2012 Mathias Bynens <mathias@qiwi.be>\n  Copyright (C) 2012 Joost-Wim Boekesteijn <joost-wim@boekesteijn.nl>\n  Copyright (C) 2012 Kris Kowal <kris.kowal@cixar.com>\n  Copyright (C) 2012 Yusuke Suzuki <utatane.tea@gmail.com>\n  Copyright (C) 2012 Arpad Borsos <arpad.borsos@googlemail.com>\n  Copyright (C) 2011 Ariya Hidayat <ariya.hidayat@gmail.com>\n\n  Redistribution and use in source and binary forms, with or without\n  modification, are permitted provided that the following conditions are met:\n\n    * Redistributions of source code must retain the above copyright\n      notice, this list of conditions and the following disclaimer.\n    * Redistributions in binary form must reproduce the above copyright\n      notice, this list of conditions and the following disclaimer in the\n      documentation and/or other materials provided with the distribution.\n\n  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS \"AS IS\"\n  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\n  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\n  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY\n  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES\n  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;\n  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND\n  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF\n  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n*/\n\n(function (global) {\n    'use strict';\n\n    var Token,\n        TokenName,\n        Syntax,\n        Messages,\n        source,\n        index,\n        length,\n        delegate,\n        lookahead,\n        state;\n\n    Token = {\n        BooleanLiteral: 1,\n        EOF: 2,\n        Identifier: 3,\n        Keyword: 4,\n        NullLiteral: 5,\n        NumericLiteral: 6,\n        Punctuator: 7,\n        StringLiteral: 8\n    };\n\n    TokenName = {};\n    TokenName[Token.BooleanLiteral] = 'Boolean';\n    TokenName[Token.EOF] = '<end>';\n    TokenName[Token.Identifier] = 'Identifier';\n    TokenName[Token.Keyword] = 'Keyword';\n    TokenName[Token.NullLiteral] = 'Null';\n    TokenName[Token.NumericLiteral] = 'Numeric';\n    TokenName[Token.Punctuator] = 'Punctuator';\n    TokenName[Token.StringLiteral] = 'String';\n\n    Syntax = {\n        ArrayExpression: 'ArrayExpression',\n        BinaryExpression: 'BinaryExpression',\n        CallExpression: 'CallExpression',\n        ConditionalExpression: 'ConditionalExpression',\n        EmptyStatement: 'EmptyStatement',\n        ExpressionStatement: 'ExpressionStatement',\n        Identifier: 'Identifier',\n        Literal: 'Literal',\n        LabeledStatement: 'LabeledStatement',\n        LogicalExpression: 'LogicalExpression',\n        MemberExpression: 'MemberExpression',\n        ObjectExpression: 'ObjectExpression',\n        Program: 'Program',\n        Property: 'Property',\n        ThisExpression: 'ThisExpression',\n        UnaryExpression: 'UnaryExpression'\n    };\n\n    // Error messages should be identical to V8.\n    Messages = {\n        UnexpectedToken:  'Unexpected token %0',\n        UnknownLabel: 'Undefined label \\'%0\\'',\n        Redeclaration: '%0 \\'%1\\' has already been declared'\n    };\n\n    // Ensure the condition is true, otherwise throw an error.\n    // This is only to have a better contract semantic, i.e. another safety net\n    // to catch a logic error. The condition shall be fulfilled in normal case.\n    // Do NOT use this to enforce a certain condition on any user input.\n\n    function assert(condition, message) {\n        if (!condition) {\n            throw new Error('ASSERT: ' + message);\n        }\n    }\n\n    function isDecimalDigit(ch) {\n        return (ch >= 48 && ch <= 57);   // 0..9\n    }\n\n\n    // 7.2 White Space\n\n    function isWhiteSpace(ch) {\n        return (ch === 32) ||  // space\n            (ch === 9) ||      // tab\n            (ch === 0xB) ||\n            (ch === 0xC) ||\n            (ch === 0xA0) ||\n            (ch >= 0x1680 && '\\u1680\\u180E\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200A\\u202F\\u205F\\u3000\\uFEFF'.indexOf(String.fromCharCode(ch)) > 0);\n    }\n\n    // 7.3 Line Terminators\n\n    function isLineTerminator(ch) {\n        return (ch === 10) || (ch === 13) || (ch === 0x2028) || (ch === 0x2029);\n    }\n\n    // 7.6 Identifier Names and Identifiers\n\n    function isIdentifierStart(ch) {\n        return (ch === 36) || (ch === 95) ||  // $ (dollar) and _ (underscore)\n            (ch >= 65 && ch <= 90) ||         // A..Z\n            (ch >= 97 && ch <= 122);          // a..z\n    }\n\n    function isIdentifierPart(ch) {\n        return (ch === 36) || (ch === 95) ||  // $ (dollar) and _ (underscore)\n            (ch >= 65 && ch <= 90) ||         // A..Z\n            (ch >= 97 && ch <= 122) ||        // a..z\n            (ch >= 48 && ch <= 57);           // 0..9\n    }\n\n    // 7.6.1.1 Keywords\n\n    function isKeyword(id) {\n        return (id === 'this')\n    }\n\n    // 7.4 Comments\n\n    function skipWhitespace() {\n        while (index < length && isWhiteSpace(source.charCodeAt(index))) {\n           ++index;\n        }\n    }\n\n    function getIdentifier() {\n        var start, ch;\n\n        start = index++;\n        while (index < length) {\n            ch = source.charCodeAt(index);\n            if (isIdentifierPart(ch)) {\n                ++index;\n            } else {\n                break;\n            }\n        }\n\n        return source.slice(start, index);\n    }\n\n    function scanIdentifier() {\n        var start, id, type;\n\n        start = index;\n\n        id = getIdentifier();\n\n        // There is no keyword or literal with only one character.\n        // Thus, it must be an identifier.\n        if (id.length === 1) {\n            type = Token.Identifier;\n        } else if (isKeyword(id)) {\n            type = Token.Keyword;\n        } else if (id === 'null') {\n            type = Token.NullLiteral;\n        } else if (id === 'true' || id === 'false') {\n            type = Token.BooleanLiteral;\n        } else {\n            type = Token.Identifier;\n        }\n\n        return {\n            type: type,\n            value: id,\n            range: [start, index]\n        };\n    }\n\n\n    // 7.7 Punctuators\n\n    function scanPunctuator() {\n        var start = index,\n            code = source.charCodeAt(index),\n            code2,\n            ch1 = source[index],\n            ch2;\n\n        switch (code) {\n\n        // Check for most common single-character punctuators.\n        case 46:   // . dot\n        case 40:   // ( open bracket\n        case 41:   // ) close bracket\n        case 59:   // ; semicolon\n        case 44:   // , comma\n        case 123:  // { open curly brace\n        case 125:  // } close curly brace\n        case 91:   // [\n        case 93:   // ]\n        case 58:   // :\n        case 63:   // ?\n            ++index;\n            return {\n                type: Token.Punctuator,\n                value: String.fromCharCode(code),\n                range: [start, index]\n            };\n\n        default:\n            code2 = source.charCodeAt(index + 1);\n\n            // '=' (char #61) marks an assignment or comparison operator.\n            if (code2 === 61) {\n                switch (code) {\n                case 37:  // %\n                case 38:  // &\n                case 42:  // *:\n                case 43:  // +\n                case 45:  // -\n                case 47:  // /\n                case 60:  // <\n                case 62:  // >\n                case 124: // |\n                    index += 2;\n                    return {\n                        type: Token.Punctuator,\n                        value: String.fromCharCode(code) + String.fromCharCode(code2),\n                        range: [start, index]\n                    };\n\n                case 33: // !\n                case 61: // =\n                    index += 2;\n\n                    // !== and ===\n                    if (source.charCodeAt(index) === 61) {\n                        ++index;\n                    }\n                    return {\n                        type: Token.Punctuator,\n                        value: source.slice(start, index),\n                        range: [start, index]\n                    };\n                default:\n                    break;\n                }\n            }\n            break;\n        }\n\n        // Peek more characters.\n\n        ch2 = source[index + 1];\n\n        // Other 2-character punctuators: && ||\n\n        if (ch1 === ch2 && ('&|'.indexOf(ch1) >= 0)) {\n            index += 2;\n            return {\n                type: Token.Punctuator,\n                value: ch1 + ch2,\n                range: [start, index]\n            };\n        }\n\n        if ('<>=!+-*%&|^/'.indexOf(ch1) >= 0) {\n            ++index;\n            return {\n                type: Token.Punctuator,\n                value: ch1,\n                range: [start, index]\n            };\n        }\n\n        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');\n    }\n\n    // 7.8.3 Numeric Literals\n    function scanNumericLiteral() {\n        var number, start, ch;\n\n        ch = source[index];\n        assert(isDecimalDigit(ch.charCodeAt(0)) || (ch === '.'),\n            'Numeric literal must start with a decimal digit or a decimal point');\n\n        start = index;\n        number = '';\n        if (ch !== '.') {\n            number = source[index++];\n            ch = source[index];\n\n            // Hex number starts with '0x'.\n            // Octal number starts with '0'.\n            if (number === '0') {\n                // decimal number starts with '0' such as '09' is illegal.\n                if (ch && isDecimalDigit(ch.charCodeAt(0))) {\n                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');\n                }\n            }\n\n            while (isDecimalDigit(source.charCodeAt(index))) {\n                number += source[index++];\n            }\n            ch = source[index];\n        }\n\n        if (ch === '.') {\n            number += source[index++];\n            while (isDecimalDigit(source.charCodeAt(index))) {\n                number += source[index++];\n            }\n            ch = source[index];\n        }\n\n        if (ch === 'e' || ch === 'E') {\n            number += source[index++];\n\n            ch = source[index];\n            if (ch === '+' || ch === '-') {\n                number += source[index++];\n            }\n            if (isDecimalDigit(source.charCodeAt(index))) {\n                while (isDecimalDigit(source.charCodeAt(index))) {\n                    number += source[index++];\n                }\n            } else {\n                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');\n            }\n        }\n\n        if (isIdentifierStart(source.charCodeAt(index))) {\n            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');\n        }\n\n        return {\n            type: Token.NumericLiteral,\n            value: parseFloat(number),\n            range: [start, index]\n        };\n    }\n\n    // 7.8.4 String Literals\n\n    function scanStringLiteral() {\n        var str = '', quote, start, ch, octal = false;\n\n        quote = source[index];\n        assert((quote === '\\'' || quote === '\"'),\n            'String literal must starts with a quote');\n\n        start = index;\n        ++index;\n\n        while (index < length) {\n            ch = source[index++];\n\n            if (ch === quote) {\n                quote = '';\n                break;\n            } else if (ch === '\\\\') {\n                ch = source[index++];\n                if (!ch || !isLineTerminator(ch.charCodeAt(0))) {\n                    switch (ch) {\n                    case 'n':\n                        str += '\\n';\n                        break;\n                    case 'r':\n                        str += '\\r';\n                        break;\n                    case 't':\n                        str += '\\t';\n                        break;\n                    case 'b':\n                        str += '\\b';\n                        break;\n                    case 'f':\n                        str += '\\f';\n                        break;\n                    case 'v':\n                        str += '\\x0B';\n                        break;\n\n                    default:\n                        str += ch;\n                        break;\n                    }\n                } else {\n                    if (ch ===  '\\r' && source[index] === '\\n') {\n                        ++index;\n                    }\n                }\n            } else if (isLineTerminator(ch.charCodeAt(0))) {\n                break;\n            } else {\n                str += ch;\n            }\n        }\n\n        if (quote !== '') {\n            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');\n        }\n\n        return {\n            type: Token.StringLiteral,\n            value: str,\n            octal: octal,\n            range: [start, index]\n        };\n    }\n\n    function isIdentifierName(token) {\n        return token.type === Token.Identifier ||\n            token.type === Token.Keyword ||\n            token.type === Token.BooleanLiteral ||\n            token.type === Token.NullLiteral;\n    }\n\n    function advance() {\n        var ch;\n\n        skipWhitespace();\n\n        if (index >= length) {\n            return {\n                type: Token.EOF,\n                range: [index, index]\n            };\n        }\n\n        ch = source.charCodeAt(index);\n\n        // Very common: ( and ) and ;\n        if (ch === 40 || ch === 41 || ch === 58) {\n            return scanPunctuator();\n        }\n\n        // String literal starts with single quote (#39) or double quote (#34).\n        if (ch === 39 || ch === 34) {\n            return scanStringLiteral();\n        }\n\n        if (isIdentifierStart(ch)) {\n            return scanIdentifier();\n        }\n\n        // Dot (.) char #46 can also start a floating-point number, hence the need\n        // to check the next character.\n        if (ch === 46) {\n            if (isDecimalDigit(source.charCodeAt(index + 1))) {\n                return scanNumericLiteral();\n            }\n            return scanPunctuator();\n        }\n\n        if (isDecimalDigit(ch)) {\n            return scanNumericLiteral();\n        }\n\n        return scanPunctuator();\n    }\n\n    function lex() {\n        var token;\n\n        token = lookahead;\n        index = token.range[1];\n\n        lookahead = advance();\n\n        index = token.range[1];\n\n        return token;\n    }\n\n    function peek() {\n        var pos;\n\n        pos = index;\n        lookahead = advance();\n        index = pos;\n    }\n\n    // Throw an exception\n\n    function throwError(token, messageFormat) {\n        var error,\n            args = Array.prototype.slice.call(arguments, 2),\n            msg = messageFormat.replace(\n                /%(\\d)/g,\n                function (whole, index) {\n                    assert(index < args.length, 'Message reference must be in range');\n                    return args[index];\n                }\n            );\n\n        error = new Error(msg);\n        error.index = index;\n        error.description = msg;\n        throw error;\n    }\n\n    // Throw an exception because of the token.\n\n    function throwUnexpected(token) {\n        throwError(token, Messages.UnexpectedToken, token.value);\n    }\n\n    // Expect the next token to match the specified punctuator.\n    // If not, an exception will be thrown.\n\n    function expect(value) {\n        var token = lex();\n        if (token.type !== Token.Punctuator || token.value !== value) {\n            throwUnexpected(token);\n        }\n    }\n\n    // Return true if the next token matches the specified punctuator.\n\n    function match(value) {\n        return lookahead.type === Token.Punctuator && lookahead.value === value;\n    }\n\n    // Return true if the next token matches the specified keyword\n\n    function matchKeyword(keyword) {\n        return lookahead.type === Token.Keyword && lookahead.value === keyword;\n    }\n\n    function consumeSemicolon() {\n        // Catch the very common case first: immediately a semicolon (char #59).\n        if (source.charCodeAt(index) === 59) {\n            lex();\n            return;\n        }\n\n        skipWhitespace();\n\n        if (match(';')) {\n            lex();\n            return;\n        }\n\n        if (lookahead.type !== Token.EOF && !match('}')) {\n            throwUnexpected(lookahead);\n        }\n    }\n\n    // 11.1.4 Array Initialiser\n\n    function parseArrayInitialiser() {\n        var elements = [];\n\n        expect('[');\n\n        while (!match(']')) {\n            if (match(',')) {\n                lex();\n                elements.push(null);\n            } else {\n                elements.push(parseExpression());\n\n                if (!match(']')) {\n                    expect(',');\n                }\n            }\n        }\n\n        expect(']');\n\n        return delegate.createArrayExpression(elements);\n    }\n\n    // 11.1.5 Object Initialiser\n\n    function parseObjectPropertyKey() {\n        var token;\n\n        skipWhitespace();\n        token = lex();\n\n        // Note: This function is called only from parseObjectProperty(), where\n        // EOF and Punctuator tokens are already filtered out.\n        if (token.type === Token.StringLiteral || token.type === Token.NumericLiteral) {\n            return delegate.createLiteral(token);\n        }\n\n        return delegate.createIdentifier(token.value);\n    }\n\n    function parseObjectProperty() {\n        var token, key;\n\n        token = lookahead;\n        skipWhitespace();\n\n        if (token.type === Token.EOF || token.type === Token.Punctuator) {\n            throwUnexpected(token);\n        }\n\n        key = parseObjectPropertyKey();\n        expect(':');\n        return delegate.createProperty('init', key, parseExpression());\n    }\n\n    function parseObjectInitialiser() {\n        var properties = [];\n\n        expect('{');\n\n        while (!match('}')) {\n            properties.push(parseObjectProperty());\n\n            if (!match('}')) {\n                expect(',');\n            }\n        }\n\n        expect('}');\n\n        return delegate.createObjectExpression(properties);\n    }\n\n    // 11.1.6 The Grouping Operator\n\n    function parseGroupExpression() {\n        var expr;\n\n        expect('(');\n\n        expr = parseExpression();\n\n        expect(')');\n\n        return expr;\n    }\n\n\n    // 11.1 Primary Expressions\n\n    function parsePrimaryExpression() {\n        var type, token, expr;\n\n        if (match('(')) {\n            return parseGroupExpression();\n        }\n\n        type = lookahead.type;\n\n        if (type === Token.Identifier) {\n            expr = delegate.createIdentifier(lex().value);\n        } else if (type === Token.StringLiteral || type === Token.NumericLiteral) {\n            expr = delegate.createLiteral(lex());\n        } else if (type === Token.Keyword) {\n            if (matchKeyword('this')) {\n                lex();\n                expr = delegate.createThisExpression();\n            }\n        } else if (type === Token.BooleanLiteral) {\n            token = lex();\n            token.value = (token.value === 'true');\n            expr = delegate.createLiteral(token);\n        } else if (type === Token.NullLiteral) {\n            token = lex();\n            token.value = null;\n            expr = delegate.createLiteral(token);\n        } else if (match('[')) {\n            expr = parseArrayInitialiser();\n        } else if (match('{')) {\n            expr = parseObjectInitialiser();\n        }\n\n        if (expr) {\n            return expr;\n        }\n\n        throwUnexpected(lex());\n    }\n\n    // 11.2 Left-Hand-Side Expressions\n\n    function parseArguments() {\n        var args = [];\n\n        expect('(');\n\n        if (!match(')')) {\n            while (index < length) {\n                args.push(parseExpression());\n                if (match(')')) {\n                    break;\n                }\n                expect(',');\n            }\n        }\n\n        expect(')');\n\n        return args;\n    }\n\n    function parseNonComputedProperty() {\n        var token;\n\n        token = lex();\n\n        if (!isIdentifierName(token)) {\n            throwUnexpected(token);\n        }\n\n        return delegate.createIdentifier(token.value);\n    }\n\n    function parseNonComputedMember() {\n        expect('.');\n\n        return parseNonComputedProperty();\n    }\n\n    function parseComputedMember() {\n        var expr;\n\n        expect('[');\n\n        expr = parseExpression();\n\n        expect(']');\n\n        return expr;\n    }\n\n    function parseLeftHandSideExpression() {\n        var expr, property;\n\n        expr = parsePrimaryExpression();\n\n        while (match('.') || match('[')) {\n            if (match('[')) {\n                property = parseComputedMember();\n                expr = delegate.createMemberExpression('[', expr, property);\n            } else {\n                property = parseNonComputedMember();\n                expr = delegate.createMemberExpression('.', expr, property);\n            }\n        }\n\n        return expr;\n    }\n\n    // 11.3 Postfix Expressions\n\n    var parsePostfixExpression = parseLeftHandSideExpression;\n\n    // 11.4 Unary Operators\n\n    function parseUnaryExpression() {\n        var token, expr;\n\n        if (lookahead.type !== Token.Punctuator && lookahead.type !== Token.Keyword) {\n            expr = parsePostfixExpression();\n        } else if (match('+') || match('-') || match('!')) {\n            token = lex();\n            expr = parseUnaryExpression();\n            expr = delegate.createUnaryExpression(token.value, expr);\n        } else if (matchKeyword('delete') || matchKeyword('void') || matchKeyword('typeof')) {\n            throwError({}, Messages.UnexpectedToken);\n        } else {\n            expr = parsePostfixExpression();\n        }\n\n        return expr;\n    }\n\n    function binaryPrecedence(token) {\n        var prec = 0;\n\n        if (token.type !== Token.Punctuator && token.type !== Token.Keyword) {\n            return 0;\n        }\n\n        switch (token.value) {\n        case '||':\n            prec = 1;\n            break;\n\n        case '&&':\n            prec = 2;\n            break;\n\n        case '==':\n        case '!=':\n        case '===':\n        case '!==':\n            prec = 6;\n            break;\n\n        case '<':\n        case '>':\n        case '<=':\n        case '>=':\n        case 'instanceof':\n            prec = 7;\n            break;\n\n        case 'in':\n            prec = 7;\n            break;\n\n        case '+':\n        case '-':\n            prec = 9;\n            break;\n\n        case '*':\n        case '/':\n        case '%':\n            prec = 11;\n            break;\n\n        default:\n            break;\n        }\n\n        return prec;\n    }\n\n    // 11.5 Multiplicative Operators\n    // 11.6 Additive Operators\n    // 11.7 Bitwise Shift Operators\n    // 11.8 Relational Operators\n    // 11.9 Equality Operators\n    // 11.10 Binary Bitwise Operators\n    // 11.11 Binary Logical Operators\n\n    function parseBinaryExpression() {\n        var expr, token, prec, stack, right, operator, left, i;\n\n        left = parseUnaryExpression();\n\n        token = lookahead;\n        prec = binaryPrecedence(token);\n        if (prec === 0) {\n            return left;\n        }\n        token.prec = prec;\n        lex();\n\n        right = parseUnaryExpression();\n\n        stack = [left, token, right];\n\n        while ((prec = binaryPrecedence(lookahead)) > 0) {\n\n            // Reduce: make a binary expression from the three topmost entries.\n            while ((stack.length > 2) && (prec <= stack[stack.length - 2].prec)) {\n                right = stack.pop();\n                operator = stack.pop().value;\n                left = stack.pop();\n                expr = delegate.createBinaryExpression(operator, left, right);\n                stack.push(expr);\n            }\n\n            // Shift.\n            token = lex();\n            token.prec = prec;\n            stack.push(token);\n            expr = parseUnaryExpression();\n            stack.push(expr);\n        }\n\n        // Final reduce to clean-up the stack.\n        i = stack.length - 1;\n        expr = stack[i];\n        while (i > 1) {\n            expr = delegate.createBinaryExpression(stack[i - 1].value, stack[i - 2], expr);\n            i -= 2;\n        }\n\n        return expr;\n    }\n\n\n    // 11.12 Conditional Operator\n\n    function parseConditionalExpression() {\n        var expr, consequent, alternate;\n\n        expr = parseBinaryExpression();\n\n        if (match('?')) {\n            lex();\n            consequent = parseConditionalExpression();\n            expect(':');\n            alternate = parseConditionalExpression();\n\n            expr = delegate.createConditionalExpression(expr, consequent, alternate);\n        }\n\n        return expr;\n    }\n\n    // Simplification since we do not support AssignmentExpression.\n    var parseExpression = parseConditionalExpression;\n\n    // Polymer Syntax extensions\n\n    // Filter ::\n    //   Identifier\n    //   Identifier \"(\" \")\"\n    //   Identifier \"(\" FilterArguments \")\"\n\n    function parseFilter() {\n        var identifier, args;\n\n        identifier = lex();\n\n        if (identifier.type !== Token.Identifier) {\n            throwUnexpected(identifier);\n        }\n\n        args = match('(') ? parseArguments() : [];\n\n        return delegate.createFilter(identifier.value, args);\n    }\n\n    // Filters ::\n    //   \"|\" Filter\n    //   Filters \"|\" Filter\n\n    function parseFilters() {\n        while (match('|')) {\n            lex();\n            parseFilter();\n        }\n    }\n\n    // TopLevel ::\n    //   LabelledExpressions\n    //   AsExpression\n    //   InExpression\n    //   FilterExpression\n\n    // AsExpression ::\n    //   FilterExpression as Identifier\n\n    // InExpression ::\n    //   Identifier, Identifier in FilterExpression\n    //   Identifier in FilterExpression\n\n    // FilterExpression ::\n    //   Expression\n    //   Expression Filters\n\n    function parseTopLevel() {\n        skipWhitespace();\n        peek();\n\n        var expr = parseExpression();\n        if (expr) {\n            if (lookahead.value === ',' || lookahead.value == 'in' &&\n                       expr.type === Syntax.Identifier) {\n                parseInExpression(expr);\n            } else {\n                parseFilters();\n                if (lookahead.value === 'as') {\n                    parseAsExpression(expr);\n                } else {\n                    delegate.createTopLevel(expr);\n                }\n            }\n        }\n\n        if (lookahead.type !== Token.EOF) {\n            throwUnexpected(lookahead);\n        }\n    }\n\n    function parseAsExpression(expr) {\n        lex();  // as\n        var identifier = lex().value;\n        delegate.createAsExpression(expr, identifier);\n    }\n\n    function parseInExpression(identifier) {\n        var indexName;\n        if (lookahead.value === ',') {\n            lex();\n            if (lookahead.type !== Token.Identifier)\n                throwUnexpected(lookahead);\n            indexName = lex().value;\n        }\n\n        lex();  // in\n        var expr = parseExpression();\n        parseFilters();\n        delegate.createInExpression(identifier.name, indexName, expr);\n    }\n\n    function parse(code, inDelegate) {\n        delegate = inDelegate;\n        source = code;\n        index = 0;\n        length = source.length;\n        lookahead = null;\n        state = {\n            labelSet: {}\n        };\n\n        return parseTopLevel();\n    }\n\n    global.esprima = {\n        parse: parse\n    };\n})(this);\n","// Copyright (c) 2014 The Polymer Project Authors. All rights reserved.\n// This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt\n// The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt\n// The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt\n// Code distributed by Google as part of the polymer project is also\n// subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt\n\n(function (global) {\n  'use strict';\n\n  // JScript does not have __proto__. We wrap all object literals with\n  // createObject which uses Object.create, Object.defineProperty and\n  // Object.getOwnPropertyDescriptor to create a new object that does the exact\n  // same thing. The main downside to this solution is that we have to extract\n  // all those property descriptors for IE.\n  var createObject = ('__proto__' in {}) ?\n      function(obj) { return obj; } :\n      function(obj) {\n        var proto = obj.__proto__;\n        if (!proto)\n          return obj;\n        var newObject = Object.create(proto);\n        Object.getOwnPropertyNames(obj).forEach(function(name) {\n          Object.defineProperty(newObject, name,\n                               Object.getOwnPropertyDescriptor(obj, name));\n        });\n        return newObject;\n      };\n\n  function prepareBinding(expressionText, name, node, filterRegistry) {\n    var expression;\n    try {\n      expression = getExpression(expressionText);\n      if (expression.scopeIdent &&\n          (node.nodeType !== Node.ELEMENT_NODE ||\n           node.tagName !== 'TEMPLATE' ||\n           (name !== 'bind' && name !== 'repeat'))) {\n        throw Error('as and in can only be used within <template bind/repeat>');\n      }\n    } catch (ex) {\n      console.error('Invalid expression syntax: ' + expressionText, ex);\n      return;\n    }\n\n    return function(model, node, oneTime) {\n      var binding = expression.getBinding(model, filterRegistry, oneTime);\n      if (expression.scopeIdent && binding) {\n        node.polymerExpressionScopeIdent_ = expression.scopeIdent;\n        if (expression.indexIdent)\n          node.polymerExpressionIndexIdent_ = expression.indexIdent;\n      }\n\n      return binding;\n    }\n  }\n\n  // TODO(rafaelw): Implement simple LRU.\n  var expressionParseCache = Object.create(null);\n\n  function getExpression(expressionText) {\n    var expression = expressionParseCache[expressionText];\n    if (!expression) {\n      var delegate = new ASTDelegate();\n      esprima.parse(expressionText, delegate);\n      expression = new Expression(delegate);\n      expressionParseCache[expressionText] = expression;\n    }\n    return expression;\n  }\n\n  function Literal(value) {\n    this.value = value;\n    this.valueFn_ = undefined;\n  }\n\n  Literal.prototype = {\n    valueFn: function() {\n      if (!this.valueFn_) {\n        var value = this.value;\n        this.valueFn_ = function() {\n          return value;\n        }\n      }\n\n      return this.valueFn_;\n    }\n  }\n\n  function IdentPath(name) {\n    this.name = name;\n    this.path = Path.get(name);\n  }\n\n  IdentPath.prototype = {\n    valueFn: function() {\n      if (!this.valueFn_) {\n        var name = this.name;\n        var path = this.path;\n        this.valueFn_ = function(model, observer) {\n          if (observer)\n            observer.addPath(model, path);\n\n          return path.getValueFrom(model);\n        }\n      }\n\n      return this.valueFn_;\n    },\n\n    setValue: function(model, newValue) {\n      if (this.path.length == 1);\n        model = findScope(model, this.path[0]);\n\n      return this.path.setValueFrom(model, newValue);\n    }\n  };\n\n  function MemberExpression(object, property, accessor) {\n    // convert literal computed property access where literal value is a value\n    // path to ident dot-access.\n    if (accessor == '[' &&\n        property instanceof Literal &&\n        Path.get(property.value).valid) {\n      accessor = '.';\n      property = new IdentPath(property.value);\n    }\n\n    this.dynamicDeps = typeof object == 'function' || object.dynamic;\n\n    this.dynamic = typeof property == 'function' ||\n                   property.dynamic ||\n                   accessor == '[';\n\n    this.simplePath =\n        !this.dynamic &&\n        !this.dynamicDeps &&\n        property instanceof IdentPath &&\n        (object instanceof MemberExpression || object instanceof IdentPath);\n\n    this.object = this.simplePath ? object : getFn(object);\n    this.property = accessor == '.' ? property : getFn(property);\n  }\n\n  MemberExpression.prototype = {\n    get fullPath() {\n      if (!this.fullPath_) {\n        var last = this.object instanceof IdentPath ?\n            this.object.name : this.object.fullPath;\n        this.fullPath_ = Path.get(last + '.' + this.property.name);\n      }\n\n      return this.fullPath_;\n    },\n\n    valueFn: function() {\n      if (!this.valueFn_) {\n        var object = this.object;\n\n        if (this.simplePath) {\n          var path = this.fullPath;\n\n          this.valueFn_ = function(model, observer) {\n            if (observer)\n              observer.addPath(model, path);\n\n            return path.getValueFrom(model);\n          };\n        } else if (this.property instanceof IdentPath) {\n          var path = Path.get(this.property.name);\n\n          this.valueFn_ = function(model, observer) {\n            var context = object(model, observer);\n\n            if (observer)\n              observer.addPath(context, path);\n\n            return path.getValueFrom(context);\n          }\n        } else {\n          // Computed property.\n          var property = this.property;\n\n          this.valueFn_ = function(model, observer) {\n            var context = object(model, observer);\n            var propName = property(model, observer);\n            if (observer)\n              observer.addPath(context, propName);\n\n            return context ? context[propName] : undefined;\n          };\n        }\n      }\n      return this.valueFn_;\n    },\n\n    setValue: function(model, newValue) {\n      if (this.simplePath) {\n        this.fullPath.setValueFrom(model, newValue);\n        return newValue;\n      }\n\n      var object = this.object(model);\n      var propName = this.property instanceof IdentPath ? this.property.name :\n          this.property(model);\n      return object[propName] = newValue;\n    }\n  };\n\n  function Filter(name, args) {\n    this.name = name;\n    this.args = [];\n    for (var i = 0; i < args.length; i++) {\n      this.args[i] = getFn(args[i]);\n    }\n  }\n\n  Filter.prototype = {\n    transform: function(value, toModelDirection, filterRegistry, model,\n                        observer) {\n      var fn = filterRegistry[this.name];\n      var context = model;\n      if (fn) {\n        context = undefined;\n      } else {\n        fn = context[this.name];\n        if (!fn) {\n          console.error('Cannot find filter: ' + this.name);\n          return;\n        }\n      }\n\n      // If toModelDirection is falsey, then the \"normal\" (dom-bound) direction\n      // is used. Otherwise, it looks for a 'toModel' property function on the\n      // object.\n      if (toModelDirection) {\n        fn = fn.toModel;\n      } else if (typeof fn.toDOM == 'function') {\n        fn = fn.toDOM;\n      }\n\n      if (typeof fn != 'function') {\n        console.error('No ' + (toModelDirection ? 'toModel' : 'toDOM') +\n                      ' found on' + this.name);\n        return;\n      }\n\n      var args = [value];\n      for (var i = 0; i < this.args.length; i++) {\n        args[i + 1] = getFn(this.args[i])(model, observer);\n      }\n\n      return fn.apply(context, args);\n    }\n  };\n\n  function notImplemented() { throw Error('Not Implemented'); }\n\n  var unaryOperators = {\n    '+': function(v) { return +v; },\n    '-': function(v) { return -v; },\n    '!': function(v) { return !v; }\n  };\n\n  var binaryOperators = {\n    '+': function(l, r) { return l+r; },\n    '-': function(l, r) { return l-r; },\n    '*': function(l, r) { return l*r; },\n    '/': function(l, r) { return l/r; },\n    '%': function(l, r) { return l%r; },\n    '<': function(l, r) { return l<r; },\n    '>': function(l, r) { return l>r; },\n    '<=': function(l, r) { return l<=r; },\n    '>=': function(l, r) { return l>=r; },\n    '==': function(l, r) { return l==r; },\n    '!=': function(l, r) { return l!=r; },\n    '===': function(l, r) { return l===r; },\n    '!==': function(l, r) { return l!==r; },\n    '&&': function(l, r) { return l&&r; },\n    '||': function(l, r) { return l||r; },\n  };\n\n  function getFn(arg) {\n    return typeof arg == 'function' ? arg : arg.valueFn();\n  }\n\n  function ASTDelegate() {\n    this.expression = null;\n    this.filters = [];\n    this.deps = {};\n    this.currentPath = undefined;\n    this.scopeIdent = undefined;\n    this.indexIdent = undefined;\n    this.dynamicDeps = false;\n  }\n\n  ASTDelegate.prototype = {\n    createUnaryExpression: function(op, argument) {\n      if (!unaryOperators[op])\n        throw Error('Disallowed operator: ' + op);\n\n      argument = getFn(argument);\n\n      return function(model, observer) {\n        return unaryOperators[op](argument(model, observer));\n      };\n    },\n\n    createBinaryExpression: function(op, left, right) {\n      if (!binaryOperators[op])\n        throw Error('Disallowed operator: ' + op);\n\n      left = getFn(left);\n      right = getFn(right);\n\n      return function(model, observer) {\n        return binaryOperators[op](left(model, observer),\n                                   right(model, observer));\n      };\n    },\n\n    createConditionalExpression: function(test, consequent, alternate) {\n      test = getFn(test);\n      consequent = getFn(consequent);\n      alternate = getFn(alternate);\n\n      return function(model, observer) {\n        return test(model, observer) ?\n            consequent(model, observer) : alternate(model, observer);\n      }\n    },\n\n    createIdentifier: function(name) {\n      var ident = new IdentPath(name);\n      ident.type = 'Identifier';\n      return ident;\n    },\n\n    createMemberExpression: function(accessor, object, property) {\n      var ex = new MemberExpression(object, property, accessor);\n      if (ex.dynamicDeps)\n        this.dynamicDeps = true;\n      return ex;\n    },\n\n    createLiteral: function(token) {\n      return new Literal(token.value);\n    },\n\n    createArrayExpression: function(elements) {\n      for (var i = 0; i < elements.length; i++)\n        elements[i] = getFn(elements[i]);\n\n      return function(model, observer) {\n        var arr = []\n        for (var i = 0; i < elements.length; i++)\n          arr.push(elements[i](model, observer));\n        return arr;\n      }\n    },\n\n    createProperty: function(kind, key, value) {\n      return {\n        key: key instanceof IdentPath ? key.name : key.value,\n        value: value\n      };\n    },\n\n    createObjectExpression: function(properties) {\n      for (var i = 0; i < properties.length; i++)\n        properties[i].value = getFn(properties[i].value);\n\n      return function(model, observer) {\n        var obj = {};\n        for (var i = 0; i < properties.length; i++)\n          obj[properties[i].key] = properties[i].value(model, observer);\n        return obj;\n      }\n    },\n\n    createFilter: function(name, args) {\n      this.filters.push(new Filter(name, args));\n    },\n\n    createAsExpression: function(expression, scopeIdent) {\n      this.expression = expression;\n      this.scopeIdent = scopeIdent;\n    },\n\n    createInExpression: function(scopeIdent, indexIdent, expression) {\n      this.expression = expression;\n      this.scopeIdent = scopeIdent;\n      this.indexIdent = indexIdent;\n    },\n\n    createTopLevel: function(expression) {\n      this.expression = expression;\n    },\n\n    createThisExpression: notImplemented\n  }\n\n  function ConstantObservable(value) {\n    this.value_ = value;\n  }\n\n  ConstantObservable.prototype = {\n    open: function() { return this.value_; },\n    discardChanges: function() { return this.value_; },\n    deliver: function() {},\n    close: function() {},\n  }\n\n  function Expression(delegate) {\n    this.scopeIdent = delegate.scopeIdent;\n    this.indexIdent = delegate.indexIdent;\n\n    if (!delegate.expression)\n      throw Error('No expression found.');\n\n    this.expression = delegate.expression;\n    getFn(this.expression); // forces enumeration of path dependencies\n\n    this.filters = delegate.filters;\n    this.dynamicDeps = delegate.dynamicDeps;\n  }\n\n  Expression.prototype = {\n    getBinding: function(model, filterRegistry, oneTime) {\n      if (oneTime)\n        return this.getValue(model, undefined, filterRegistry);\n\n      var observer = new CompoundObserver();\n      // captures deps.\n      var firstValue = this.getValue(model, observer, filterRegistry);\n      var firstTime = true;\n      var self = this;\n\n      function valueFn() {\n        // deps cannot have changed on first value retrieval.\n        if (firstTime) {\n          firstTime = false;\n          return firstValue;\n        }\n\n        if (self.dynamicDeps)\n          observer.startReset();\n\n        var value = self.getValue(model,\n                                  self.dynamicDeps ? observer : undefined,\n                                  filterRegistry);\n        if (self.dynamicDeps)\n          observer.finishReset();\n\n        return value;\n      }\n\n      function setValueFn(newValue) {\n        self.setValue(model, newValue, filterRegistry);\n        return newValue;\n      }\n\n      return new ObserverTransform(observer, valueFn, setValueFn, true);\n    },\n\n    getValue: function(model, observer, filterRegistry) {\n      var value = getFn(this.expression)(model, observer);\n      for (var i = 0; i < this.filters.length; i++) {\n        value = this.filters[i].transform(value, false, filterRegistry, model,\n                                          observer);\n      }\n\n      return value;\n    },\n\n    setValue: function(model, newValue, filterRegistry) {\n      var count = this.filters ? this.filters.length : 0;\n      while (count-- > 0) {\n        newValue = this.filters[count].transform(newValue, true, filterRegistry,\n                                                 model);\n      }\n\n      if (this.expression.setValue)\n        return this.expression.setValue(model, newValue);\n    }\n  }\n\n  /**\n   * Converts a style property name to a css property name. For example:\n   * \"WebkitUserSelect\" to \"-webkit-user-select\"\n   */\n  function convertStylePropertyName(name) {\n    return String(name).replace(/[A-Z]/g, function(c) {\n      return '-' + c.toLowerCase();\n    });\n  }\n\n  function isEventHandler(name) {\n    return name[0] === 'o' &&\n           name[1] === 'n' &&\n           name[2] === '-';\n  }\n\n  var mixedCaseEventTypes = {};\n  [\n    'webkitAnimationStart',\n    'webkitAnimationEnd',\n    'webkitTransitionEnd',\n    'DOMFocusOut',\n    'DOMFocusIn',\n    'DOMMouseScroll'\n  ].forEach(function(e) {\n    mixedCaseEventTypes[e.toLowerCase()] = e;\n  });\n\n  var parentScopeName = '@' + Math.random().toString(36).slice(2);\n\n  // Single ident paths must bind directly to the appropriate scope object.\n  // I.e. Pushed values in two-bindings need to be assigned to the actual model\n  // object.\n  function findScope(model, prop) {\n    while (model[parentScopeName] &&\n           !Object.prototype.hasOwnProperty.call(model, prop)) {\n      model = model[parentScopeName];\n    }\n\n    return model;\n  }\n\n  function resolveEventReceiver(model, path, node) {\n    if (path.length == 0)\n      return undefined;\n\n    if (path.length == 1)\n      return findScope(model, path[0]);\n\n    for (var i = 0; model != null && i < path.length - 1; i++) {\n      model = model[path[i]];\n    }\n\n    return model;\n  }\n\n  function prepareEventBinding(path, name, polymerExpressions) {\n    var eventType = name.substring(3);\n    eventType = mixedCaseEventTypes[eventType] || eventType;\n\n    return function(model, node, oneTime) {\n      var fn, receiver, handler;\n      if (typeof polymerExpressions.resolveEventHandler == 'function') {\n        handler = function(e) {\n          fn = fn || polymerExpressions.resolveEventHandler(model, path, node);\n          if (fn) {\n            fn(e, e.detail, e.currentTarget);\n            if (Platform && typeof Platform.flush == 'function')\n              Platform.flush();\n          }\n        };\n      } else {\n        handler = function(e) {\n          fn = fn || path.getValueFrom(model);\n          receiver = receiver || resolveEventReceiver(model, path, node);\n          if (fn) {\n            fn.apply(receiver, [e, e.detail, e.currentTarget]);\n            if (Platform && typeof Platform.flush == 'function')\n              Platform.flush();\n          }\n        };\n      }\n\n      node.addEventListener(eventType, handler);\n\n      if (oneTime)\n        return;\n\n      function bindingValue() {\n        return '{{ ' + path + ' }}';\n      }\n\n      return {\n        open: bindingValue,\n        discardChanges: bindingValue,\n        close: function() {\n          node.removeEventListener(eventType, handler);\n        }\n      };\n    }\n  }\n\n  function isLiteralExpression(pathString) {\n    switch (pathString) {\n      case '':\n        return false;\n\n      case 'false':\n      case 'null':\n      case 'true':\n        return true;\n    }\n\n    if (!isNaN(Number(pathString)))\n      return true;\n\n    return false;\n  };\n\n  function PolymerExpressions() {}\n\n  PolymerExpressions.prototype = {\n    // \"built-in\" filters\n    styleObject: function(value) {\n      var parts = [];\n      for (var key in value) {\n        parts.push(convertStylePropertyName(key) + ': ' + value[key]);\n      }\n      return parts.join('; ');\n    },\n\n    tokenList: function(value) {\n      var tokens = [];\n      for (var key in value) {\n        if (value[key])\n          tokens.push(key);\n      }\n      return tokens.join(' ');\n    },\n\n    // binding delegate API\n    prepareInstancePositionChanged: function(template) {\n      var indexIdent = template.polymerExpressionIndexIdent_;\n      if (!indexIdent)\n        return;\n\n      return function(templateInstance, index) {\n        templateInstance.model[indexIdent] = index;\n      };\n    },\n\n    prepareBinding: function(pathString, name, node) {\n      var path = Path.get(pathString);\n      if (isEventHandler(name)) {\n        if (!path.valid) {\n          console.error('on-* bindings must be simple path expressions');\n          return;\n        }\n\n        return prepareEventBinding(path, name, this);\n      }\n\n      if (!isLiteralExpression(pathString) && path.valid) {\n        if (path.length == 1) {\n          return function(model, node, oneTime) {\n            if (oneTime)\n              return path.getValueFrom(model);\n\n            var scope = findScope(model, path[0]);\n            return new PathObserver(scope, path);\n          };\n        }\n        return; // bail out early if pathString is simple path.\n      }\n\n      return prepareBinding(pathString, name, node, this);\n    },\n\n    prepareInstanceModel: function(template) {\n      var scopeName = template.polymerExpressionScopeIdent_;\n      if (!scopeName)\n        return;\n\n      var parentScope = template.templateInstance ?\n          template.templateInstance.model :\n          template.model;\n\n      var indexName = template.polymerExpressionIndexIdent_;\n\n      return function(model) {\n        var scope = Object.create(parentScope);\n        scope[scopeName] = model;\n        scope[indexName] = undefined;\n        scope[parentScopeName] = parentScope;\n        return scope;\n      };\n    }\n  };\n\n  global.PolymerExpressions = PolymerExpressions;\n  if (global.exposeGetExpression)\n    global.getExpression_ = getExpression;\n\n  global.PolymerExpressions.prepareEventBinding = prepareEventBinding;\n})(this);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\nPolymer = {};\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n// TODO(sorvell): this ensures Polymer is an object and not a function\n// Platform is currently defining it as a function to allow for async loading\n// of polymer; once we refine the loading process this likely goes away.\nif (typeof window.Polymer === 'function') {\n  Polymer = {};\n}\n\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(scope) {\n\n  // copy own properties from 'api' to 'prototype, with name hinting for 'super'\n  function extend(prototype, api) {\n    if (prototype && api) {\n      // use only own properties of 'api'\n      Object.getOwnPropertyNames(api).forEach(function(n) {\n        // acquire property descriptor\n        var pd = Object.getOwnPropertyDescriptor(api, n);\n        if (pd) {\n          // clone property via descriptor\n          Object.defineProperty(prototype, n, pd);\n          // cache name-of-method for 'super' engine\n          if (typeof pd.value == 'function') {\n            // hint the 'super' engine\n            pd.value.nom = n;\n          }\n        }\n      });\n    }\n    return prototype;\n  }\n  \n  // exports\n\n  scope.extend = extend;\n\n})(Polymer);\n","/* \n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(scope) {\n  \n  // usage\n  \n  // invoke cb.call(this) in 100ms, unless the job is re-registered,\n  // which resets the timer\n  // \n  // this.myJob = this.job(this.myJob, cb, 100)\n  //\n  // returns a job handle which can be used to re-register a job\n\n  var Job = function(inContext) {\n    this.context = inContext;\n    this.boundComplete = this.complete.bind(this)\n  };\n  Job.prototype = {\n    go: function(callback, wait) {\n      this.callback = callback;\n      var h;\n      if (!wait) {\n        h = requestAnimationFrame(this.boundComplete);\n        this.handle = function() {\n          cancelAnimationFrame(h);\n        }\n      } else {\n        h = setTimeout(this.boundComplete, wait);\n        this.handle = function() {\n          clearTimeout(h);\n        }\n      }\n    },\n    stop: function() {\n      if (this.handle) {\n        this.handle();\n        this.handle = null;\n      }\n    },\n    complete: function() {\n      if (this.handle) {\n        this.stop();\n        this.callback.call(this.context);\n      }\n    }\n  };\n  \n  function job(job, callback, wait) {\n    if (job) {\n      job.stop();\n    } else {\n      job = new Job(this);\n    }\n    job.go(callback, wait);\n    return job;\n  }\n  \n  // exports \n\n  scope.job = job;\n  \n})(Polymer);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(scope) {\n\n  var registry = {};\n\n  HTMLElement.register = function(tag, prototype) {\n    registry[tag] = prototype;\n  }\n\n  // get prototype mapped to node <tag>\n  HTMLElement.getPrototypeForTag = function(tag) {\n    var prototype = !tag ? HTMLElement.prototype : registry[tag];\n    // TODO(sjmiles): creating <tag> is likely to have wasteful side-effects\n    return prototype || Object.getPrototypeOf(document.createElement(tag));\n  };\n\n  // we have to flag propagation stoppage for the event dispatcher\n  var originalStopPropagation = Event.prototype.stopPropagation;\n  Event.prototype.stopPropagation = function() {\n    this.cancelBubble = true;\n    originalStopPropagation.apply(this, arguments);\n  };\n  \n  // TODO(sorvell): remove when we're sure imports does not need\n  // to load stylesheets\n  /*\n  HTMLImports.importer.preloadSelectors += \n      ', polymer-element link[rel=stylesheet]';\n  */\n})(Polymer);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n (function(scope) {\n    // super\n\n    // `arrayOfArgs` is an optional array of args like one might pass\n    // to `Function.apply`\n\n    // TODO(sjmiles):\n    //    $super must be installed on an instance or prototype chain\n    //    as `super`, and invoked via `this`, e.g.\n    //      `this.super();`\n\n    //    will not work if function objects are not unique, for example,\n    //    when using mixins.\n    //    The memoization strategy assumes each function exists on only one \n    //    prototype chain i.e. we use the function object for memoizing)\n    //    perhaps we can bookkeep on the prototype itself instead\n    function $super(arrayOfArgs) {\n      // since we are thunking a method call, performance is important here: \n      // memoize all lookups, once memoized the fast path calls no other \n      // functions\n      //\n      // find the caller (cannot be `strict` because of 'caller')\n      var caller = $super.caller;\n      // memoized 'name of method' \n      var nom = caller.nom;\n      // memoized next implementation prototype\n      var _super = caller._super;\n      if (!_super) {\n        if (!nom) {\n          nom = caller.nom = nameInThis.call(this, caller);\n        }\n        if (!nom) {\n          console.warn('called super() on a method not installed declaratively (has no .nom property)');\n        }\n        // super prototype is either cached or we have to find it\n        // by searching __proto__ (at the 'top')\n        _super = memoizeSuper(caller, nom, getPrototypeOf(this));\n      }\n      if (!_super) {\n        // if _super is falsey, there is no super implementation\n        //console.warn('called $super(' + nom + ') where there is no super implementation');\n      } else {\n        // our super function\n        var fn = _super[nom];\n        // memoize information so 'fn' can call 'super'\n        if (!fn._super) {\n          memoizeSuper(fn, nom, _super);\n        }\n        // invoke the inherited method\n        // if 'fn' is not function valued, this will throw\n        return fn.apply(this, arrayOfArgs || []);\n      }\n    }\n\n    function nextSuper(proto, name, caller) {\n      // look for an inherited prototype that implements name\n      while (proto) {\n        if ((proto[name] !== caller) && proto[name]) {\n          return proto;\n        }\n        proto = getPrototypeOf(proto);\n      }\n    }\n\n    function memoizeSuper(method, name, proto) {\n      // find and cache next prototype containing `name`\n      // we need the prototype so we can do another lookup\n      // from here\n      method._super = nextSuper(proto, name, method);\n      if (method._super) {\n        // _super is a prototype, the actual method is _super[name]\n        // tag super method with it's name for further lookups\n        method._super[name].nom = name;\n      }\n      return method._super;\n    }\n\n    function nameInThis(value) {\n      var p = this.__proto__;\n      while (p && p !== HTMLElement.prototype) {\n        // TODO(sjmiles): getOwnPropertyNames is absurdly expensive\n        var n$ = Object.getOwnPropertyNames(p);\n        for (var i=0, l=n$.length, n; i<l && (n=n$[i]); i++) {\n          var d = Object.getOwnPropertyDescriptor(p, n);\n          if (typeof d.value === 'function' && d.value === value) {\n            return n;\n          }\n        }\n        p = p.__proto__;\n      }\n    }\n\n    // NOTE: In some platforms (IE10) the prototype chain is faked via \n    // __proto__. Therefore, always get prototype via __proto__ instead of\n    // the more standard Object.getPrototypeOf.\n    function getPrototypeOf(prototype) {\n      return prototype.__proto__;\n    }\n\n    // utility function to precompute name tags for functions\n    // in a (unchained) prototype\n    function hintSuper(prototype) {\n      // tag functions with their prototype name to optimize\n      // super call invocations\n      for (var n in prototype) {\n        var pd = Object.getOwnPropertyDescriptor(prototype, n);\n        if (pd && typeof pd.value === 'function') {\n          pd.value.nom = n;\n        }\n      }\n    }\n\n    // exports\n\n    scope.super = $super;\n\n})(Polymer);\n","/* \n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(scope) {\n\n  var typeHandlers = {\n    string: function(value) {\n      return value;\n    },\n    date: function(value) {\n      return new Date(Date.parse(value) || Date.now());\n    },\n    boolean: function(value) {\n      if (value === '') {\n        return true;\n      }\n      return value === 'false' ? false : !!value;\n    },\n    number: function(value) {\n      var n = parseFloat(value);\n      // hex values like \"0xFFFF\" parseFloat as 0\n      if (n === 0) {\n        n = parseInt(value);\n      }\n      return isNaN(n) ? value : n;\n      // this code disabled because encoded values (like \"0xFFFF\")\n      // do not round trip to their original format\n      //return (String(floatVal) === value) ? floatVal : value;\n    },\n    object: function(value, currentValue) {\n      if (currentValue === null) {\n        return value;\n      }\n      try {\n        // If the string is an object, we can parse is with the JSON library.\n        // include convenience replace for single-quotes. If the author omits\n        // quotes altogether, parse will fail.\n        return JSON.parse(value.replace(/'/g, '\"'));\n      } catch(e) {\n        // The object isn't valid JSON, return the raw value\n        return value;\n      }\n    },\n    // avoid deserialization of functions\n    'function': function(value, currentValue) {\n      return currentValue;\n    }\n  };\n\n  function deserializeValue(value, currentValue) {\n    // attempt to infer type from default value\n    var inferredType = typeof currentValue;\n    // invent 'date' type value for Date\n    if (currentValue instanceof Date) {\n      inferredType = 'date';\n    }\n    // delegate deserialization via type string\n    return typeHandlers[inferredType](value, currentValue);\n  }\n\n  // exports\n\n  scope.deserializeValue = deserializeValue;\n\n})(Polymer);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(scope) {\n\n  // imports\n\n  var extend = scope.extend;\n\n  // module\n\n  var api = {};\n\n  api.declaration = {};\n  api.instance = {};\n\n  api.publish = function(apis, prototype) {\n    for (var n in apis) {\n      extend(prototype, apis[n]);\n    }\n  }\n\n  // exports\n\n  scope.api = api;\n\n})(Polymer);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(scope) {\n\n  var utils = {\n    /**\n      * Invokes a function asynchronously. The context of the callback\n      * function is bound to 'this' automatically.\n      * @method async\n      * @param {Function|String} method\n      * @param {any|Array} args\n      * @param {number} timeout\n      */\n    async: function(method, args, timeout) {\n      // when polyfilling Object.observe, ensure changes \n      // propagate before executing the async method\n      Platform.flush();\n      // second argument to `apply` must be an array\n      args = (args && args.length) ? args : [args];\n      // function to invoke\n      var fn = function() {\n        (this[method] || method).apply(this, args);\n      }.bind(this);\n      // execute `fn` sooner or later\n      var handle = timeout ? setTimeout(fn, timeout) :\n          requestAnimationFrame(fn);\n      // NOTE: switch on inverting handle to determine which time is used.\n      return timeout ? handle : ~handle;\n    },\n    cancelAsync: function(handle) {\n      if (handle < 0) {\n        cancelAnimationFrame(~handle);\n      } else {\n        clearTimeout(handle);\n      }\n    },\n    /**\n      * Fire an event.\n      * @method fire\n      * @returns {Object} event\n      * @param {string} type An event name.\n      * @param {any} detail\n      * @param {Node} onNode Target node.\n      */\n    fire: function(type, detail, onNode, bubbles, cancelable) {\n      var node = onNode || this;\n      var detail = detail || {};\n      var event = new CustomEvent(type, {\n        bubbles: (bubbles !== undefined ? bubbles : true), \n        cancelable: (cancelable !== undefined ? cancelable : true), \n        detail: detail\n      });\n      node.dispatchEvent(event);\n      return event;\n    },\n    /**\n      * Fire an event asynchronously.\n      * @method asyncFire\n      * @param {string} type An event name.\n      * @param detail\n      * @param {Node} toNode Target node.\n      */\n    asyncFire: function(/*inType, inDetail*/) {\n      this.async(\"fire\", arguments);\n    },\n    /**\n      * Remove class from old, add class to anew, if they exist\n      * @param classFollows\n      * @param anew A node.\n      * @param old A node\n      * @param className\n      */\n    classFollows: function(anew, old, className) {\n      if (old) {\n        old.classList.remove(className);\n      }\n      if (anew) {\n        anew.classList.add(className);\n      }\n    }\n  };\n\n  // no-operation function for handy stubs\n  var nop = function() {};\n\n  // null-object for handy stubs\n  var nob = {};\n\n  // deprecated\n\n  utils.asyncMethod = utils.async;\n\n  // exports\n\n  scope.api.instance.utils = utils;\n  scope.nop = nop;\n  scope.nob = nob;\n\n})(Polymer);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(scope) {\n\n  // imports\n\n  var log = window.logFlags || {};\n  var EVENT_PREFIX = 'on-';\n\n  // instance events api\n  var events = {\n    // read-only\n    EVENT_PREFIX: EVENT_PREFIX,\n    // event listeners on host\n    addHostListeners: function() {\n      var events = this.eventDelegates;\n      log.events && (Object.keys(events).length > 0) && console.log('[%s] addHostListeners:', this.localName, events);\n      // NOTE: host events look like bindings but really are not;\n      // (1) we don't want the attribute to be set and (2) we want to support\n      // multiple event listeners ('host' and 'instance') and Node.bind\n      // by default supports 1 thing being bound.\n      // We do, however, leverage the event hookup code in PolymerExpressions\n      // so that we have a common code path for handling declarative events.\n      var self = this, bindable, eventName;\n      for (var n in events) {\n        eventName = EVENT_PREFIX + n;\n        bindable = PolymerExpressions.prepareEventBinding(\n          Path.get(events[n]),\n          eventName, \n          {\n            resolveEventHandler: function(model, path, node) {\n              var fn = path.getValueFrom(self);\n              if (fn) {\n                return fn.bind(self);\n              }\n            }\n          }\n        );\n        bindable(this, this, false);\n      }\n    },\n    // call 'method' or function method on 'obj' with 'args', if the method exists\n    dispatchMethod: function(obj, method, args) {\n      if (obj) {\n        log.events && console.group('[%s] dispatch [%s]', obj.localName, method);\n        var fn = typeof method === 'function' ? method : obj[method];\n        if (fn) {\n          fn[args ? 'apply' : 'call'](obj, args);\n        }\n        log.events && console.groupEnd();\n        Platform.flush();\n      }\n    }\n  };\n\n  // exports\n\n  scope.api.instance.events = events;\n\n})(Polymer);\n","/*\r\n * Copyright 2013 The Polymer Authors. All rights reserved.\r\n * Use of this source code is governed by a BSD-style\r\n * license that can be found in the LICENSE file.\r\n */\r\n(function(scope) {\r\n\r\n  // instance api for attributes\r\n\r\n  var attributes = {\r\n    copyInstanceAttributes: function () {\r\n      var a$ = this._instanceAttributes;\r\n      for (var k in a$) {\r\n        if (!this.hasAttribute(k)) {\r\n          this.setAttribute(k, a$[k]);\r\n        }\r\n      }\r\n    },\r\n    // for each attribute on this, deserialize value to property as needed\r\n    takeAttributes: function() {\r\n      // if we have no publish lookup table, we have no attributes to take\r\n      // TODO(sjmiles): ad hoc\r\n      if (this._publishLC) {\r\n        for (var i=0, a$=this.attributes, l=a$.length, a; (a=a$[i]) && i<l; i++) {\r\n          this.attributeToProperty(a.name, a.value);\r\n        }\r\n      }\r\n    },\r\n    // if attribute 'name' is mapped to a property, deserialize\r\n    // 'value' into that property\r\n    attributeToProperty: function(name, value) {\r\n      // try to match this attribute to a property (attributes are\r\n      // all lower-case, so this is case-insensitive search)\r\n      var name = this.propertyForAttribute(name);\r\n      if (name) {\r\n        // filter out 'mustached' values, these are to be\r\n        // replaced with bound-data and are not yet values\r\n        // themselves\r\n        if (value && value.search(scope.bindPattern) >= 0) {\r\n          return;\r\n        }\r\n        // get original value\r\n        var currentValue = this[name];\r\n        // deserialize Boolean or Number values from attribute\r\n        var value = this.deserializeValue(value, currentValue);\r\n        // only act if the value has changed\r\n        if (value !== currentValue) {\r\n          // install new value (has side-effects)\r\n          this[name] = value;\r\n        }\r\n      }\r\n    },\r\n    // return the published property matching name, or undefined\r\n    propertyForAttribute: function(name) {\r\n      var match = this._publishLC && this._publishLC[name];\r\n      //console.log('propertyForAttribute:', name, 'matches', match);\r\n      return match;\r\n    },\r\n    // convert representation of 'stringValue' based on type of 'currentValue'\r\n    deserializeValue: function(stringValue, currentValue) {\r\n      return scope.deserializeValue(stringValue, currentValue);\r\n    },\r\n    serializeValue: function(value, inferredType) {\r\n      if (inferredType === 'boolean') {\r\n        return value ? '' : undefined;\r\n      } else if (inferredType !== 'object' && inferredType !== 'function'\r\n          && value !== undefined) {\r\n        return value;\r\n      }\r\n    },\r\n    reflectPropertyToAttribute: function(name) {\r\n      var inferredType = typeof this[name];\r\n      // try to intelligently serialize property value\r\n      var serializedValue = this.serializeValue(this[name], inferredType);\r\n      // boolean properties must reflect as boolean attributes\r\n      if (serializedValue !== undefined) {\r\n        this.setAttribute(name, serializedValue);\r\n        // TODO(sorvell): we should remove attr for all properties\r\n        // that have undefined serialization; however, we will need to\r\n        // refine the attr reflection system to achieve this; pica, for example,\r\n        // relies on having inferredType object properties not removed as\r\n        // attrs.\r\n      } else if (inferredType === 'boolean') {\r\n        this.removeAttribute(name);\r\n      }\r\n    }\r\n  };\r\n\r\n  // exports\r\n\r\n  scope.api.instance.attributes = attributes;\r\n\r\n})(Polymer);\r\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(scope) {\n\n  // imports\n\n  var log = window.logFlags || {};\n\n  // magic words\n\n  var OBSERVE_SUFFIX = 'Changed';\n\n  // element api\n\n  var empty = [];\n\n  var properties = {\n    createPropertyObserver: function() {\n      var n$ = this._observeNames;\n      if (n$ && n$.length) {\n        var o = this._propertyObserver = new CompoundObserver(true);\n        this.registerObservers([o]);\n        // TODO(sorvell): may not be kosher to access the value here (this[n]);\n        // previously we looked at the descriptor on the prototype\n        // this doesn't work for inheritance and not for accessors without \n        // a value property\n        for (var i=0, l=n$.length, n; (i<l) && (n=n$[i]); i++) {\n          o.addPath(this, n);\n          this.observeArrayValue(n, this[n], null);\n        }\n      }\n    },\n    openPropertyObserver: function() {\n      if (this._propertyObserver) {\n        this._propertyObserver.open(this.notifyPropertyChanges, this);\n      }\n    },\n    notifyPropertyChanges: function(newValues, oldValues, paths) {\n      var name, method, called = {};\n      for (var i in oldValues) {\n        // note: paths is of form [object, path, object, path]\n        name = paths[2 * i + 1];\n        method = this.observe[name];\n        if (method) {\n          this.observeArrayValue(name, newValues[i], oldValues[i]);\n          if (!called[method]) {\n            called[method] = true;\n            // observes the value if it is an array\n            // TODO(sorvell): call method with the set of values it's expecting;\n            // e.g. 'foo bar': 'invalidate' expects the new and old values for\n            // foo and bar. Currently we give only one of these and then\n            // deliver all the arguments.\n            this.invokeMethod(method, [oldValues[i], newValues[i], arguments]);\n          }\n        }\n      }\n    },\n    propertyChanged_: function(name, value, oldValue) {\n      if (this.reflect[name]) {\n        this.reflectPropertyToAttribute(name);\n      }\n    },\n    observeArrayValue: function(name, value, old) {\n      // we only care if there are registered side-effects\n      var callbackName = this.observe[name];\n      if (callbackName) {\n        // if we are observing the previous value, stop\n        if (Array.isArray(old)) {\n          log.observe && console.log('[%s] observeArrayValue: unregister observer [%s]', this.localName, name);\n          this.closeNamedObserver(name + '__array');\n        }\n        // if the new value is an array, being observing it\n        if (Array.isArray(value)) {\n          log.observe && console.log('[%s] observeArrayValue: register observer [%s]', this.localName, name, value);\n          var observer = new ArrayObserver(value);\n          observer.open(function(value, old) {\n            this.invokeMethod(callbackName, [old]);\n          }, this);\n          this.registerNamedObserver(name + '__array', observer);\n        }\n      }\n    },\n    bindProperty: function(property, observable, oneTime) {\n      if (oneTime) {\n        this[property] = observable;\n        return;\n      }\n      return bindProperties(this, property, observable);\n    },\n    invokeMethod: function(method, args) {\n      var fn = this[method] || method;\n      if (typeof fn === 'function') {\n        fn.apply(this, args);\n      }\n    },\n    registerObservers: function(observers) {\n      this._observers = this._observers || [];\n      this._observers.push(observers);\n    },\n    // observer array items are arrays of observers.\n    closeObservers: function() {\n      for (var i=0, l=this._observers.length; i<l; i++) {\n        this.closeObserverArray(this._observers[i]);\n      }\n      this._observers = [];\n    },\n    closeObserverArray: function(observerArray) {\n      for (var i=0, l=observerArray.length, o; i<l; i++) {\n        o = observerArray[i];\n        if (o && o.close) {\n          o.close();\n        }\n      }\n    },\n    // bookkeeping observers for memory management\n    registerNamedObserver: function(name, observer) {\n      var o$ = this._namedObservers || (this._namedObservers = {});\n      o$[name] = observer;\n    },\n    closeNamedObserver: function(name) {\n      var o$ = this._namedObservers;\n      if (o$ && o$[name]) {\n        o$[name].close();\n        o$[name] = null;\n        return true;\n      }\n    },\n    closeNamedObservers: function() {\n      if (this._namedObservers) {\n        var keys=Object.keys(this._namedObservers);\n        for (var i=0, l=keys.length, k, o; (i < l) && (k=keys[i]); i++) {\n          o = this._namedObservers[k];\n          o.close();\n        }\n        this._namedObservers = {};\n      }\n    }\n  };\n\n  // property binding\n  // bind a property in A to a path in B by converting A[property] to a\n  // getter/setter pair that accesses B[...path...]\n  function bindProperties(inA, inProperty, observable) {\n    log.bind && console.log(LOG_BIND_PROPS, observable.path_, inPath, inA.localName, inProperty);\n    // apply Polymer two-way reference binding\n    return Observer.bindToInstance(inA, inProperty, observable, resolveBindingValue);\n  }\n\n  // capture A's value if B's value is null or undefined,\n  // otherwise use B's value\n  function resolveBindingValue(oldValue, value) {\n    return (value === null || value === undefined) ? oldValue : value;\n  }\n\n  // logging\n  var LOG_OBSERVE = '[%s] watching [%s]';\n  var LOG_OBSERVED = '[%s#%s] watch: [%s] now [%s] was [%s]';\n  var LOG_CHANGED = '[%s#%s] propertyChanged: [%s] now [%s] was [%s]';\n  var LOG_BIND_PROPS = \"[%s]: bindProperties: [%s] to [%s].[%s]\";\n\n  // exports\n\n  scope.api.instance.properties = properties;\n\n})(Polymer);","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(scope) {\n\n  // imports\n\n  var log = window.logFlags || 0;\n\n  // element api supporting mdv\n  var mdv = {\n    instanceTemplate: function(template) {\n      // ensure a default bindingDelegate\n      var syntax = this.syntax || (!template.bindingDelegate &&\n          this.element.syntax);\n      var dom = template.createInstance(this, syntax);\n      this.registerObservers(dom.bindings_);\n      return dom;\n    },\n    bind: function(name, observable, oneTime) {\n      var property = this.propertyForAttribute(name);\n      if (!property) {\n        // TODO(sjmiles): this mixin method must use the special form\n        // of `super` installed by `mixinMethod` in declaration/prototype.js\n        return this.mixinSuper(arguments);\n      } else {\n        // use n-way Polymer binding\n        var observer = this.bindProperty(property, observable, oneTime);\n        // NOTE: reflecting binding information is typically required only for\n        // tooling. It has a performance cost so it's opt-in in Node.bind.\n        if (Platform.enableBindingsReflection && observer) {\n          observer.path = observable.path_;\n          this.bindings_ = this.bindings_ || {};\n          this.bindings_[property] = observer;\n        }\n        if (this.reflect[property]) {\n          this.reflectPropertyToAttribute(property);\n        }\n        return observer;\n      }\n    },\n    bindFinished: function() {\n      this.makeElementReady();\n    },\n    // TODO(sorvell): unbind/unbindAll has been removed, as public api, from\n    // TemplateBinding. We still need to close/dispose of observers but perhaps\n    // we should choose a more explicit name.\n    asyncUnbindAll: function() {\n      if (!this._unbound) {\n        log.unbind && console.log('[%s] asyncUnbindAll', this.localName);\n        this._unbindAllJob = this.job(this._unbindAllJob, this.unbindAll, 0);\n      }\n    },\n    unbindAll: function() {\n      if (!this._unbound) {\n        this.closeObservers();\n        this.closeNamedObservers();\n        this._unbound = true;\n      }\n    },\n    cancelUnbindAll: function() {\n      if (this._unbound) {\n        log.unbind && console.warn('[%s] already unbound, cannot cancel unbindAll', this.localName);\n        return;\n      }\n      log.unbind && console.log('[%s] cancelUnbindAll', this.localName);\n      if (this._unbindAllJob) {\n        this._unbindAllJob = this._unbindAllJob.stop();\n      }\n    }\n  };\n\n  function unbindNodeTree(node) {\n    forNodeTree(node, _nodeUnbindAll);\n  }\n\n  function _nodeUnbindAll(node) {\n    node.unbindAll();\n  }\n\n  function forNodeTree(node, callback) {\n    if (node) {\n      callback(node);\n      for (var child = node.firstChild; child; child = child.nextSibling) {\n        forNodeTree(child, callback);\n      }\n    }\n  }\n\n  var mustachePattern = /\\{\\{([^{}]*)}}/;\n\n  // exports\n\n  scope.bindPattern = mustachePattern;\n  scope.api.instance.mdv = mdv;\n\n})(Polymer);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(scope) {\n\n  var base = {\n    PolymerBase: true,\n    job: function(job, callback, wait) {\n      if (typeof job === 'string') {\n        var n = '___' + job;\n        this[n] = Polymer.job.call(this, this[n], callback, wait);\n      } else {\n        return Polymer.job.call(this, job, callback, wait);\n      }\n    },\n    super: Polymer.super,\n    // user entry point for element has had its createdCallback called\n    created: function() {\n    },\n    // user entry point for element has shadowRoot and is ready for\n    // api interaction\n    ready: function() {\n    },\n    createdCallback: function() {\n      if (this.templateInstance && this.templateInstance.model) {\n        console.warn('Attributes on ' + this.localName + ' were data bound ' +\n            'prior to Polymer upgrading the element. This may result in ' +\n            'incorrect binding types.');\n      }\n      this.created();\n      this.prepareElement();\n      // TODO(sorvell): replace when ShadowDOMPolyfill issue is corrected\n      // https://github.com/Polymer/ShadowDOM/issues/420\n      if (!this.ownerDocument.isStagingDocument || window.ShadowDOMPolyfill) {\n        this.makeElementReady();\n      }\n    },\n    // system entry point, do not override\n    prepareElement: function() {\n      if (this._elementPrepared) {\n        console.warn('Element already prepared', this.localName);\n        return;\n      }\n      this._elementPrepared = true;\n      // storage for shadowRoots info\n      this.shadowRoots = {};\n      // install property observers\n      this.createPropertyObserver();\n      // TODO (sorvell): temporarily open observer when created\n      this.openPropertyObserver();\n      // install boilerplate attributes\n      this.copyInstanceAttributes();\n      // process input attributes\n      this.takeAttributes();\n      // add event listeners\n      this.addHostListeners();\n    },\n    makeElementReady: function() {\n      if (this._readied) {\n        return;\n      }\n      this._readied = true;\n      // TODO(sorvell): We could create an entry point here\n      // for the user to compute property values.\n      // process declarative resources\n      this.parseDeclarations(this.__proto__);\n      // TODO(sorvell): CE polyfill uses unresolved attribute to simulate\n      // :unresolved; remove this attribute to be compatible with native\n      // CE.\n      this.removeAttribute('unresolved');\n      // user entry point\n      this.ready();\n      // TODO (sorvell): temporarily open observer when created\n      // turn on property observation and take any initial changes\n      //this.openPropertyObserver();\n    },\n    attachedCallback: function() {\n      this.cancelUnbindAll();\n      // invoke user action\n      if (this.attached) {\n        this.attached();\n      }\n      // TODO(sorvell): bc\n      if (this.enteredView) {\n        this.enteredView();\n      }\n      // NOTE: domReady can be used to access elements in dom (descendants, \n      // ancestors, siblings) such that the developer is enured to upgrade\n      // ordering. If the element definitions have loaded, domReady\n      // can be used to access upgraded elements.\n      if (!this.hasBeenAttached) {\n        this.hasBeenAttached = true;\n        if (this.domReady) {\n          this.async('domReady');\n        }\n      }\n    },\n    detachedCallback: function() {\n      if (!this.preventDispose) {\n        this.asyncUnbindAll();\n      }\n      // invoke user action\n      if (this.detached) {\n        this.detached();\n      }\n      // TODO(sorvell): bc\n      if (this.leftView) {\n        this.leftView();\n      }\n    },\n    // TODO(sorvell): bc\n    enteredViewCallback: function() {\n      this.attachedCallback();\n    },\n    // TODO(sorvell): bc\n    leftViewCallback: function() {\n      this.detachedCallback();\n    },\n    // TODO(sorvell): bc\n    enteredDocumentCallback: function() {\n      this.attachedCallback();\n    },\n    // TODO(sorvell): bc\n    leftDocumentCallback: function() {\n      this.detachedCallback();\n    },\n    // recursive ancestral <element> initialization, oldest first\n    parseDeclarations: function(p) {\n      if (p && p.element) {\n        this.parseDeclarations(p.__proto__);\n        p.parseDeclaration.call(this, p.element);\n      }\n    },\n    // parse input <element> as needed, override for custom behavior\n    parseDeclaration: function(elementElement) {\n      var template = this.fetchTemplate(elementElement);\n      if (template) {\n        var root = this.shadowFromTemplate(template);\n        this.shadowRoots[elementElement.name] = root;\n      }\n    },\n    // return a shadow-root template (if desired), override for custom behavior\n    fetchTemplate: function(elementElement) {\n      return elementElement.querySelector('template');\n    },\n    // utility function that creates a shadow root from a <template>\n    shadowFromTemplate: function(template) {\n      if (template) {\n        // make a shadow root\n        var root = this.createShadowRoot();\n        // stamp template\n        // which includes parsing and applying MDV bindings before being \n        // inserted (to avoid {{}} in attribute values)\n        // e.g. to prevent <img src=\"images/{{icon}}\"> from generating a 404.\n        var dom = this.instanceTemplate(template);\n        // append to shadow dom\n        root.appendChild(dom);\n        // perform post-construction initialization tasks on shadow root\n        this.shadowRootReady(root, template);\n        // return the created shadow root\n        return root;\n      }\n    },\n    // utility function that stamps a <template> into light-dom\n    lightFromTemplate: function(template, refNode) {\n      if (template) {\n        // TODO(sorvell): mark this element as a lightDOMController so that\n        // event listeners on bound nodes inside it will be called on it.\n        // Note, the expectation here is that events on all descendants \n        // should be handled by this element.\n        this.lightDomController = true;\n        // stamp template\n        // which includes parsing and applying MDV bindings before being \n        // inserted (to avoid {{}} in attribute values)\n        // e.g. to prevent <img src=\"images/{{icon}}\"> from generating a 404.\n        var dom = this.instanceTemplate(template);\n        // append to shadow dom\n        if (refNode) {\n          this.insertBefore(dom, refNode);          \n        } else {\n          this.appendChild(dom);\n        }\n        // perform post-construction initialization tasks on ahem, light root\n        this.shadowRootReady(this);\n        // return the created shadow root\n        return dom;\n      }\n    },\n    shadowRootReady: function(root) {\n      // locate nodes with id and store references to them in this.$ hash\n      this.marshalNodeReferences(root);\n      // set up polymer gestures\n      PolymerGestures.register(root);\n    },\n    // locate nodes with id and store references to them in this.$ hash\n    marshalNodeReferences: function(root) {\n      // establish $ instance variable\n      var $ = this.$ = this.$ || {};\n      // populate $ from nodes with ID from the LOCAL tree\n      if (root) {\n        var n$ = root.querySelectorAll(\"[id]\");\n        for (var i=0, l=n$.length, n; (i<l) && (n=n$[i]); i++) {\n          $[n.id] = n;\n        };\n      }\n    },\n    attributeChangedCallback: function(name, oldValue) {\n      // TODO(sjmiles): adhoc filter\n      if (name !== 'class' && name !== 'style') {\n        this.attributeToProperty(name, this.getAttribute(name));\n      }\n      if (this.attributeChanged) {\n        this.attributeChanged.apply(this, arguments);\n      }\n    },\n    onMutation: function(node, listener) {\n      var observer = new MutationObserver(function(mutations) {\n        listener.call(this, observer, mutations);\n        observer.disconnect();\n      }.bind(this));\n      observer.observe(node, {childList: true, subtree: true});\n    }\n  };\n\n  // true if object has own PolymerBase api\n  function isBase(object) {\n    return object.hasOwnProperty('PolymerBase') \n  }\n\n  // name a base constructor for dev tools\n\n  function PolymerBase() {};\n  PolymerBase.prototype = base;\n  base.constructor = PolymerBase;\n  \n  // exports\n\n  scope.Base = PolymerBase;\n  scope.isBase = isBase;\n  scope.api.instance.base = base;\n  \n})(Polymer);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(scope) {\n\n  // imports\n\n  var log = window.logFlags || {};\n  \n  // magic words\n  \n  var STYLE_SCOPE_ATTRIBUTE = 'element';\n  var STYLE_CONTROLLER_SCOPE = 'controller';\n  \n  var styles = {\n    STYLE_SCOPE_ATTRIBUTE: STYLE_SCOPE_ATTRIBUTE,\n    /**\n     * Installs external stylesheets and <style> elements with the attribute \n     * polymer-scope='controller' into the scope of element. This is intended\n     * to be a called during custom element construction.\n    */\n    installControllerStyles: function() {\n      // apply controller styles, but only if they are not yet applied\n      var scope = this.findStyleScope();\n      if (scope && !this.scopeHasNamedStyle(scope, this.localName)) {\n        // allow inherited controller styles\n        var proto = getPrototypeOf(this), cssText = '';\n        while (proto && proto.element) {\n          cssText += proto.element.cssTextForScope(STYLE_CONTROLLER_SCOPE);\n          proto = getPrototypeOf(proto);\n        }\n        if (cssText) {\n          this.installScopeCssText(cssText, scope);\n        }\n      }\n    },\n    installScopeStyle: function(style, name, scope) {\n      var scope = scope || this.findStyleScope(), name = name || '';\n      if (scope && !this.scopeHasNamedStyle(scope, this.localName + name)) {\n        var cssText = '';\n        if (style instanceof Array) {\n          for (var i=0, l=style.length, s; (i<l) && (s=style[i]); i++) {\n            cssText += s.textContent + '\\n\\n';\n          }\n        } else {\n          cssText = style.textContent;\n        }\n        this.installScopeCssText(cssText, scope, name);\n      }\n    },\n    installScopeCssText: function(cssText, scope, name) {\n      scope = scope || this.findStyleScope();\n      name = name || '';\n      if (!scope) {\n        return;\n      }\n      if (window.ShadowDOMPolyfill) {\n        cssText = shimCssText(cssText, scope.host);\n      }\n      var style = this.element.cssTextToScopeStyle(cssText,\n          STYLE_CONTROLLER_SCOPE);\n      Polymer.applyStyleToScope(style, scope);\n      // cache that this style has been applied\n      scope._scopeStyles[this.localName + name] = true;\n    },\n    findStyleScope: function(node) {\n      // find the shadow root that contains this element\n      var n = node || this;\n      while (n.parentNode) {\n        n = n.parentNode;\n      }\n      return n;\n    },\n    scopeHasNamedStyle: function(scope, name) {\n      scope._scopeStyles = scope._scopeStyles || {};\n      return scope._scopeStyles[name];\n    }\n  };\n  \n  // NOTE: use raw prototype traversal so that we ensure correct traversal\n  // on platforms where the protoype chain is simulated via __proto__ (IE10)\n  function getPrototypeOf(prototype) {\n    return prototype.__proto__;\n  }\n\n  function shimCssText(cssText, host) {\n    var name = '', is = false;\n    if (host) {\n      name = host.localName;\n      is = host.hasAttribute('is');\n    }\n    var selector = Platform.ShadowCSS.makeScopeSelector(name, is);\n    return Platform.ShadowCSS.shimCssText(cssText, selector);\n  }\n\n  // exports\n\n  scope.api.instance.styles = styles;\n  \n})(Polymer);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(scope) {\n\n  // imports\n\n  var extend = scope.extend;\n  var api = scope.api;\n\n  // imperative implementation: Polymer()\n\n  // specify an 'own' prototype for tag `name`\n  function element(name, prototype) {\n    if (arguments.length === 1 && typeof arguments[0] !== 'string') {\n      prototype = name;\n      var script = document._currentScript;\n      name = script && script.parentNode && script.parentNode.getAttribute ?\n          script.parentNode.getAttribute('name') : '';\n      if (!name) {\n        throw 'Element name could not be inferred.';\n      }\n    }\n    if (getRegisteredPrototype[name]) {\n      throw 'Already registered (Polymer) prototype for element ' + name;\n    }\n    // cache the prototype\n    registerPrototype(name, prototype);\n    // notify the registrar waiting for 'name', if any\n    notifyPrototype(name);\n  }\n\n  // async prototype source\n\n  function waitingForPrototype(name, client) {\n    waitPrototype[name] = client;\n  }\n\n  var waitPrototype = {};\n\n  function notifyPrototype(name) {\n    if (waitPrototype[name]) {\n      waitPrototype[name].registerWhenReady();\n      delete waitPrototype[name];\n    }\n  }\n\n  // utility and bookkeeping\n\n  // maps tag names to prototypes, as registered with\n  // Polymer. Prototypes associated with a tag name\n  // using document.registerElement are available from\n  // HTMLElement.getPrototypeForTag().\n  // If an element was fully registered by Polymer, then\n  // Polymer.getRegisteredPrototype(name) === \n  //   HTMLElement.getPrototypeForTag(name)\n\n  var prototypesByName = {};\n\n  function registerPrototype(name, prototype) {\n    return prototypesByName[name] = prototype || {};\n  }\n\n  function getRegisteredPrototype(name) {\n    return prototypesByName[name];\n  }\n\n  // exports\n\n  scope.getRegisteredPrototype = getRegisteredPrototype;\n  scope.waitingForPrototype = waitingForPrototype;\n\n  // namespace shenanigans so we can expose our scope on the registration \n  // function\n\n  // make window.Polymer reference `element()`\n\n  window.Polymer = element;\n\n  // TODO(sjmiles): find a way to do this that is less terrible\n  // copy window.Polymer properties onto `element()`\n\n  extend(Polymer, scope);\n\n  // Under the HTMLImports polyfill, scripts in the main document\n  // do not block on imports; we want to allow calls to Polymer in the main\n  // document. Platform collects those calls until we can process them, which\n  // we do here.\n\n  var declarations = Platform.deliverDeclarations();\n  if (declarations) {\n    for (var i=0, l=declarations.length, d; (i<l) && (d=declarations[i]); i++) {\n      element.apply(null, d);\n    }\n  }\n\n})(Polymer);\n","/* \n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(scope) {\n\nvar path = {\n  resolveElementPaths: function(node) {\n    Platform.urlResolver.resolveDom(node);\n  },\n  addResolvePathApi: function() {\n    // let assetpath attribute modify the resolve path\n    var assetPath = this.getAttribute('assetpath') || '';\n    var root = new URL(assetPath, this.ownerDocument.baseURI);\n    this.prototype.resolvePath = function(urlPath, base) {\n      var u = new URL(urlPath, base || root);\n      return u.href;\n    };\n  }\n};\n\n// exports\nscope.api.declaration.path = path;\n\n})(Polymer);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(scope) {\n\n  // imports\n\n  var log = window.logFlags || {};\n  var api = scope.api.instance.styles;\n  var STYLE_SCOPE_ATTRIBUTE = api.STYLE_SCOPE_ATTRIBUTE;\n\n  // magic words\n\n  var STYLE_SELECTOR = 'style';\n  var STYLE_LOADABLE_MATCH = '@import';\n  var SHEET_SELECTOR = 'link[rel=stylesheet]';\n  var STYLE_GLOBAL_SCOPE = 'global';\n  var SCOPE_ATTR = 'polymer-scope';\n\n  var styles = {\n    // returns true if resources are loading\n    loadStyles: function(callback) {\n      var content = this.templateContent();\n      if (content) {\n        this.convertSheetsToStyles(content);\n      }\n      var styles = this.findLoadableStyles(content);\n      if (styles.length) {\n        Platform.styleResolver.loadStyles(styles, callback);\n      } else if (callback) {\n        callback();\n      }\n    },\n    convertSheetsToStyles: function(root) {\n      var s$ = root.querySelectorAll(SHEET_SELECTOR);\n      for (var i=0, l=s$.length, s, c; (i<l) && (s=s$[i]); i++) {\n        c = createStyleElement(importRuleForSheet(s, this.ownerDocument.baseURI),\n            this.ownerDocument);\n        this.copySheetAttributes(c, s);\n        s.parentNode.replaceChild(c, s);\n      }\n    },\n    copySheetAttributes: function(style, link) {\n      for (var i=0, a$=link.attributes, l=a$.length, a; (a=a$[i]) && i<l; i++) {\n        if (a.name !== 'rel' && a.name !== 'href') {\n          style.setAttribute(a.name, a.value);\n        }\n      }\n    },\n    findLoadableStyles: function(root) {\n      var loadables = [];\n      if (root) {\n        var s$ = root.querySelectorAll(STYLE_SELECTOR);\n        for (var i=0, l=s$.length, s; (i<l) && (s=s$[i]); i++) {\n          if (s.textContent.match(STYLE_LOADABLE_MATCH)) {\n            loadables.push(s);\n          }\n        }\n      }\n      return loadables;\n    },\n    /**\n     * Install external stylesheets loaded in <polymer-element> elements into the \n     * element's template.\n     * @param elementElement The <element> element to style.\n     */\n    installSheets: function() {\n      this.cacheSheets();\n      this.cacheStyles();\n      this.installLocalSheets();\n      this.installGlobalStyles();\n    },\n    /**\n     * Remove all sheets from element and store for later use.\n     */\n    cacheSheets: function() {\n      this.sheets = this.findNodes(SHEET_SELECTOR);\n      this.sheets.forEach(function(s) {\n        if (s.parentNode) {\n          s.parentNode.removeChild(s);\n        }\n      });\n    },\n    cacheStyles: function() {\n      this.styles = this.findNodes(STYLE_SELECTOR + '[' + SCOPE_ATTR + ']');\n      this.styles.forEach(function(s) {\n        if (s.parentNode) {\n          s.parentNode.removeChild(s);\n        }\n      });\n    },\n    /**\n     * Takes external stylesheets loaded in an <element> element and moves\n     * their content into a <style> element inside the <element>'s template.\n     * The sheet is then removed from the <element>. This is done only so \n     * that if the element is loaded in the main document, the sheet does\n     * not become active.\n     * Note, ignores sheets with the attribute 'polymer-scope'.\n     * @param elementElement The <element> element to style.\n     */\n    installLocalSheets: function () {\n      var sheets = this.sheets.filter(function(s) {\n        return !s.hasAttribute(SCOPE_ATTR);\n      });\n      var content = this.templateContent();\n      if (content) {\n        var cssText = '';\n        sheets.forEach(function(sheet) {\n          cssText += cssTextFromSheet(sheet) + '\\n';\n        });\n        if (cssText) {\n          var style = createStyleElement(cssText, this.ownerDocument);\n          content.insertBefore(style, content.firstChild);\n        }\n      }\n    },\n    findNodes: function(selector, matcher) {\n      var nodes = this.querySelectorAll(selector).array();\n      var content = this.templateContent();\n      if (content) {\n        var templateNodes = content.querySelectorAll(selector).array();\n        nodes = nodes.concat(templateNodes);\n      }\n      return matcher ? nodes.filter(matcher) : nodes;\n    },\n    /**\n     * Promotes external stylesheets and <style> elements with the attribute \n     * polymer-scope='global' into global scope.\n     * This is particularly useful for defining @keyframe rules which \n     * currently do not function in scoped or shadow style elements.\n     * (See wkb.ug/72462)\n     * @param elementElement The <element> element to style.\n    */\n    // TODO(sorvell): remove when wkb.ug/72462 is addressed.\n    installGlobalStyles: function() {\n      var style = this.styleForScope(STYLE_GLOBAL_SCOPE);\n      applyStyleToScope(style, document.head);\n    },\n    cssTextForScope: function(scopeDescriptor) {\n      var cssText = '';\n      // handle stylesheets\n      var selector = '[' + SCOPE_ATTR + '=' + scopeDescriptor + ']';\n      var matcher = function(s) {\n        return matchesSelector(s, selector);\n      };\n      var sheets = this.sheets.filter(matcher);\n      sheets.forEach(function(sheet) {\n        cssText += cssTextFromSheet(sheet) + '\\n\\n';\n      });\n      // handle cached style elements\n      var styles = this.styles.filter(matcher);\n      styles.forEach(function(style) {\n        cssText += style.textContent + '\\n\\n';\n      });\n      return cssText;\n    },\n    styleForScope: function(scopeDescriptor) {\n      var cssText = this.cssTextForScope(scopeDescriptor);\n      return this.cssTextToScopeStyle(cssText, scopeDescriptor);\n    },\n    cssTextToScopeStyle: function(cssText, scopeDescriptor) {\n      if (cssText) {\n        var style = createStyleElement(cssText);\n        style.setAttribute(STYLE_SCOPE_ATTRIBUTE, this.getAttribute('name') +\n            '-' + scopeDescriptor);\n        return style;\n      }\n    }\n  };\n\n  function importRuleForSheet(sheet, baseUrl) {\n    var href = new URL(sheet.getAttribute('href'), baseUrl).href;\n    return '@import \\'' + href + '\\';';\n  }\n\n  function applyStyleToScope(style, scope) {\n    if (style) {\n      if (scope === document) {\n        scope = document.head;\n      }\n      if (window.ShadowDOMPolyfill) {\n        scope = document.head;\n      }\n      // TODO(sorvell): necessary for IE\n      // see https://connect.microsoft.com/IE/feedback/details/790212/\n      // cloning-a-style-element-and-adding-to-document-produces\n      // -unexpected-result#details\n      // var clone = style.cloneNode(true);\n      var clone = createStyleElement(style.textContent);\n      var attr = style.getAttribute(STYLE_SCOPE_ATTRIBUTE);\n      if (attr) {\n        clone.setAttribute(STYLE_SCOPE_ATTRIBUTE, attr);\n      }\n      // TODO(sorvell): probably too brittle; try to figure out \n      // where to put the element.\n      var refNode = scope.firstElementChild;\n      if (scope === document.head) {\n        var selector = 'style[' + STYLE_SCOPE_ATTRIBUTE + ']';\n        var s$ = document.head.querySelectorAll(selector);\n        if (s$.length) {\n          refNode = s$[s$.length-1].nextElementSibling;\n        }\n      }\n      scope.insertBefore(clone, refNode);\n    }\n  }\n\n  function createStyleElement(cssText, scope) {\n    scope = scope || document;\n    scope = scope.createElement ? scope : scope.ownerDocument;\n    var style = scope.createElement('style');\n    style.textContent = cssText;\n    return style;\n  }\n\n  function cssTextFromSheet(sheet) {\n    return (sheet && sheet.__resource) || '';\n  }\n\n  function matchesSelector(node, inSelector) {\n    if (matches) {\n      return matches.call(node, inSelector);\n    }\n  }\n  var p = HTMLElement.prototype;\n  var matches = p.matches || p.matchesSelector || p.webkitMatchesSelector \n      || p.mozMatchesSelector;\n  \n  // exports\n\n  scope.api.declaration.styles = styles;\n  scope.applyStyleToScope = applyStyleToScope;\n  \n})(Polymer);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n(function(scope) {\n\n  // imports\n\n  var log = window.logFlags || {};\n  var api = scope.api.instance.events;\n  var EVENT_PREFIX = api.EVENT_PREFIX;\n  // polymer-element declarative api: events feature\n\n  var events = { \n    parseHostEvents: function() {\n      // our delegates map\n      var delegates = this.prototype.eventDelegates;\n      // extract data from attributes into delegates\n      this.addAttributeDelegates(delegates);\n    },\n    addAttributeDelegates: function(delegates) {\n      // for each attribute\n      for (var i=0, a; a=this.attributes[i]; i++) {\n        // does it have magic marker identifying it as an event delegate?\n        if (this.hasEventPrefix(a.name)) {\n          // if so, add the info to delegates\n          delegates[this.removeEventPrefix(a.name)] = a.value.replace('{{', '')\n              .replace('}}', '').trim();\n        }\n      }\n    },\n    // starts with 'on-'\n    hasEventPrefix: function (n) {\n      return n && (n[0] === 'o') && (n[1] === 'n') && (n[2] === '-');\n    },\n    removeEventPrefix: function(n) {\n      return n.slice(prefixLength);\n    }\n  };\n\n  var prefixLength = EVENT_PREFIX.length;\n\n  // exports\n  scope.api.declaration.events = events;\n\n})(Polymer);","/*\r\n * Copyright 2013 The Polymer Authors. All rights reserved.\r\n * Use of this source code is governed by a BSD-style\r\n * license that can be found in the LICENSE file.\r\n */\r\n(function(scope) {\r\n\r\n  // element api\r\n\r\n  var properties = {\r\n    inferObservers: function(prototype) {\r\n      // called before prototype.observe is chained to inherited object\r\n      var observe = prototype.observe, property;\r\n      for (var n in prototype) {\r\n        if (n.slice(-7) === 'Changed') {\r\n          if (!observe) {\r\n            observe  = (prototype.observe = {});\r\n          }\r\n          property = n.slice(0, -7)\r\n          observe[property] = observe[property] || n;\r\n        }\r\n      }\r\n    },\r\n    explodeObservers: function(prototype) {\r\n      // called before prototype.observe is chained to inherited object\r\n      var o = prototype.observe;\r\n      if (o) {\r\n        var exploded = {};\r\n        for (var n in o) {\r\n          var names = n.split(' ');\r\n          for (var i=0, ni; ni=names[i]; i++) {\r\n            exploded[ni] = o[n];\r\n          }\r\n        }\r\n        prototype.observe = exploded;\r\n      }\r\n    },\r\n    optimizePropertyMaps: function(prototype) {\r\n      if (prototype.observe) {\r\n        // construct name list\r\n        var a = prototype._observeNames = [];\r\n        for (var n in prototype.observe) {\r\n          var names = n.split(' ');\r\n          for (var i=0, ni; ni=names[i]; i++) {\r\n            a.push(ni);\r\n          }\r\n        }\r\n      }\r\n      if (prototype.publish) {\r\n        // construct name list\r\n        var a = prototype._publishNames = [];\r\n        for (var n in prototype.publish) {\r\n          a.push(n);\r\n        }\r\n      }\r\n    },\r\n    publishProperties: function(prototype, base) {\r\n      // if we have any properties to publish\r\n      var publish = prototype.publish;\r\n      if (publish) {\r\n        // transcribe `publish` entries onto own prototype\r\n        this.requireProperties(publish, prototype, base);\r\n        // construct map of lower-cased property names\r\n        prototype._publishLC = this.lowerCaseMap(publish);\r\n      }\r\n    },\r\n    requireProperties: function(properties, prototype, base) {\r\n      // reflected properties\r\n      prototype.reflect = prototype.reflect || {};\r\n      // ensure a prototype value for each property\r\n      for (var n in properties) {\r\n        if (this.valueReflects(properties[n])) {\r\n          prototype.reflect[n] = true;\r\n        }\r\n        if (prototype[n] === undefined && base[n] === undefined) {\r\n          prototype[n] =  this.valueForProperty(properties[n]); \r\n        }\r\n      }\r\n    },\r\n    valueForProperty: function(propertyValue) {\r\n      return (typeof propertyValue === 'object' && propertyValue !== null) ? \r\n          (propertyValue.value !== undefined ? propertyValue.value : null) :\r\n          propertyValue;\r\n    },\r\n    valueReflects: function(propertyValue) {\r\n      return (typeof propertyValue === 'object' && propertyValue !== null && \r\n        propertyValue.reflect);\r\n    },\r\n    lowerCaseMap: function(properties) {\r\n      var map = {};\r\n      for (var n in properties) {\r\n        map[n.toLowerCase()] = n;\r\n      }\r\n      return map;\r\n    },\r\n    createPropertyAccessors: function(prototype) {\r\n      var n$ = prototype._publishNames;\r\n      if (n$ && n$.length) {\r\n        for (var i=0, l=n$.length, n, fn; (i<l) && (n=n$[i]); i++) {\r\n          Observer.createBindablePrototypeAccessor(prototype, n);\r\n        }\r\n      }\r\n    }\r\n  };\r\n\r\n  // exports\r\n\r\n  scope.api.declaration.properties = properties;\r\n\r\n})(Polymer);\r\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(scope) {\n\n  // magic words\n\n  var ATTRIBUTES_ATTRIBUTE = 'attributes';\n  var ATTRIBUTES_REGEX = /\\s|,/;\n\n  // attributes api\n\n  var attributes = {\n    inheritAttributesObjects: function(prototype) {\n      // chain our lower-cased publish map to the inherited version\n      this.inheritObject(prototype, 'publishLC');\n      // chain our instance attributes map to the inherited version\n      this.inheritObject(prototype, '_instanceAttributes');\n    },\n    publishAttributes: function(prototype, base) {\n      // merge names from 'attributes' attribute\n      var attributes = this.getAttribute(ATTRIBUTES_ATTRIBUTE);\n      if (attributes) {\n        // get properties to publish\n        var publish = prototype.publish || (prototype.publish = {});\n        // names='a b c' or names='a,b,c'\n        var names = attributes.split(ATTRIBUTES_REGEX);\n        // record each name for publishing\n        for (var i=0, l=names.length, n; i<l; i++) {\n          // remove excess ws\n          n = names[i].trim();\n          // do not override explicit entries\n          if (n && publish[n] === undefined && base[n] === undefined) {\n            publish[n] = null;\n          }\n        }\n      }\n    },\n    // record clonable attributes from <element>\n    accumulateInstanceAttributes: function() {\n      // inherit instance attributes\n      var clonable = this.prototype._instanceAttributes;\n      // merge attributes from element\n      var a$ = this.attributes;\n      for (var i=0, l=a$.length, a; (i<l) && (a=a$[i]); i++) {  \n        if (this.isInstanceAttribute(a.name)) {\n          clonable[a.name] = a.value;\n        }\n      }\n    },\n    isInstanceAttribute: function(name) {\n      return !this.blackList[name] && name.slice(0,3) !== 'on-';\n    },\n    // do not clone these attributes onto instances\n    blackList: {\n      name: 1,\n      'extends': 1,\n      constructor: 1,\n      noscript: 1,\n      assetpath: 1,\n      'cache-csstext': 1\n    }\n  };\n\n  // add ATTRIBUTES_ATTRIBUTE to the blacklist\n  attributes.blackList[ATTRIBUTES_ATTRIBUTE] = 1;\n\n  // exports\n\n  scope.api.declaration.attributes = attributes;\n\n})(Polymer);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(scope) {\n\n  // imports\n\n  var syntax = new PolymerExpressions();\n  syntax.resolveEventHandler = function(model, path, node) {\n    var ctlr = findEventController(node);\n    if (ctlr) {\n      var fn = path.getValueFrom(ctlr);\n      if (fn) {\n        return fn.bind(ctlr);\n      }\n    }\n  };\n\n  // An event controller is the host element for the shadowRoot in which \n  // the node exists, or the first ancestor with a 'lightDomController'\n  // property.\n  function findEventController(node) {\n    while (node.parentNode) {\n      if (node.lightDomController) {\n        return node;\n      }\n      node = node.parentNode;\n    }\n    return node.host;\n  }\n\n  // declaration api supporting mdv\n  var mdv = {\n    syntax: syntax,\n    fetchTemplate: function() {\n      return this.querySelector('template');\n    },\n    templateContent: function() {\n      var template = this.fetchTemplate();\n      return template && templateContent(template);\n    },\n    installBindingDelegate: function(template) {\n      if (template) {\n        template.bindingDelegate = this.syntax;\n      }\n    }\n  };\n\n  // exports\n  scope.api.declaration.mdv = mdv;\n\n})(Polymer);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(scope) {\n\n  // imports\n  \n  var api = scope.api;\n  var isBase = scope.isBase;\n  var extend = scope.extend;\n\n  // prototype api\n\n  var prototype = {\n\n    register: function(name, extendeeName) {\n      // build prototype combining extendee, Polymer base, and named api\n      this.buildPrototype(name, extendeeName);\n      // register our custom element with the platform\n      this.registerPrototype(name, extendeeName);\n      // reference constructor in a global named by 'constructor' attribute\n      this.publishConstructor();\n    },\n\n    buildPrototype: function(name, extendeeName) {\n      // get our custom prototype (before chaining)\n      var extension = scope.getRegisteredPrototype(name);\n      // get basal prototype\n      var base = this.generateBasePrototype(extendeeName);\n      // implement declarative features\n      this.desugarBeforeChaining(extension, base);\n      // join prototypes\n      this.prototype = this.chainPrototypes(extension, base);\n      // more declarative features\n      this.desugarAfterChaining(name, extendeeName);\n    },\n\n    desugarBeforeChaining: function(prototype, base) {\n      // back reference declaration element\n      // TODO(sjmiles): replace `element` with `elementElement` or `declaration`\n      prototype.element = this;\n      // transcribe `attributes` declarations onto own prototype's `publish`\n      this.publishAttributes(prototype, base);\n      // `publish` properties to the prototype and to attribute watch\n      this.publishProperties(prototype, base);\n      // infer observers for `observe` list based on method names\n      this.inferObservers(prototype);\n      // desugar compound observer syntax, e.g. 'a b c' \n      this.explodeObservers(prototype);\n    },\n\n    chainPrototypes: function(prototype, base) {\n      // chain various meta-data objects to inherited versions\n      this.inheritMetaData(prototype, base);\n      // chain custom api to inherited\n      var chained = this.chainObject(prototype, base);\n      // x-platform fixup\n      ensurePrototypeTraversal(chained);\n      return chained;\n    },\n\n    inheritMetaData: function(prototype, base) {\n      // chain observe object to inherited\n      this.inheritObject('observe', prototype, base);\n      // chain publish object to inherited\n      this.inheritObject('publish', prototype, base);\n      // chain reflect object to inherited\n      this.inheritObject('reflect', prototype, base);\n      // chain our lower-cased publish map to the inherited version\n      this.inheritObject('_publishLC', prototype, base);\n      // chain our instance attributes map to the inherited version\n      this.inheritObject('_instanceAttributes', prototype, base);\n      // chain our event delegates map to the inherited version\n      this.inheritObject('eventDelegates', prototype, base);\n    },\n\n    // implement various declarative features\n    desugarAfterChaining: function(name, extendee) {\n      // build side-chained lists to optimize iterations\n      this.optimizePropertyMaps(this.prototype);\n      this.createPropertyAccessors(this.prototype);\n      // install mdv delegate on template\n      this.installBindingDelegate(this.fetchTemplate());\n      // install external stylesheets as if they are inline\n      this.installSheets();\n      // adjust any paths in dom from imports\n      this.resolveElementPaths(this);\n      // compile list of attributes to copy to instances\n      this.accumulateInstanceAttributes();\n      // parse on-* delegates declared on `this` element\n      this.parseHostEvents();\n      //\n      // install a helper method this.resolvePath to aid in \n      // setting resource urls. e.g.\n      // this.$.image.src = this.resolvePath('images/foo.png')\n      this.addResolvePathApi();\n      // under ShadowDOMPolyfill, transforms to approximate missing CSS features\n      if (window.ShadowDOMPolyfill) {\n        Platform.ShadowCSS.shimStyling(this.templateContent(), name, extendee);\n      }\n      // allow custom element access to the declarative context\n      if (this.prototype.registerCallback) {\n        this.prototype.registerCallback(this);\n      }\n    },\n\n    // if a named constructor is requested in element, map a reference\n    // to the constructor to the given symbol\n    publishConstructor: function() {\n      var symbol = this.getAttribute('constructor');\n      if (symbol) {\n        window[symbol] = this.ctor;\n      }\n    },\n\n    // build prototype combining extendee, Polymer base, and named api\n    generateBasePrototype: function(extnds) {\n      var prototype = this.findBasePrototype(extnds);\n      if (!prototype) {\n        // create a prototype based on tag-name extension\n        var prototype = HTMLElement.getPrototypeForTag(extnds);\n        // insert base api in inheritance chain (if needed)\n        prototype = this.ensureBaseApi(prototype);\n        // memoize this base\n        memoizedBases[extnds] = prototype;\n      }\n      return prototype;\n    },\n\n    findBasePrototype: function(name) {\n      return memoizedBases[name];\n    },\n\n    // install Polymer instance api into prototype chain, as needed \n    ensureBaseApi: function(prototype) {\n      if (prototype.PolymerBase) {\n        return prototype;\n      }\n      var extended = Object.create(prototype);\n      // we need a unique copy of base api for each base prototype\n      // therefore we 'extend' here instead of simply chaining\n      api.publish(api.instance, extended);\n      // TODO(sjmiles): sharing methods across prototype chains is\n      // not supported by 'super' implementation which optimizes\n      // by memoizing prototype relationships.\n      // Probably we should have a version of 'extend' that is \n      // share-aware: it could study the text of each function,\n      // look for usage of 'super', and wrap those functions in\n      // closures.\n      // As of now, there is only one problematic method, so \n      // we just patch it manually.\n      // To avoid re-entrancy problems, the special super method\n      // installed is called `mixinSuper` and the mixin method\n      // must use this method instead of the default `super`.\n      this.mixinMethod(extended, prototype, api.instance.mdv, 'bind');\n      // return buffed-up prototype\n      return extended;\n    },\n\n    mixinMethod: function(extended, prototype, api, name) {\n      var $super = function(args) {\n        return prototype[name].apply(this, args);\n      };\n      extended[name] = function() {\n        this.mixinSuper = $super;\n        return api[name].apply(this, arguments);\n      }\n    },\n\n    // ensure prototype[name] inherits from a prototype.prototype[name]\n    inheritObject: function(name, prototype, base) {\n      // require an object\n      var source = prototype[name] || {};\n      // chain inherited properties onto a new object\n      prototype[name] = this.chainObject(source, base[name]);\n    },\n\n    // register 'prototype' to custom element 'name', store constructor \n    registerPrototype: function(name, extendee) { \n      var info = {\n        prototype: this.prototype\n      }\n      // native element must be specified in extends\n      var typeExtension = this.findTypeExtension(extendee);\n      if (typeExtension) {\n        info.extends = typeExtension;\n      }\n      // register the prototype with HTMLElement for name lookup\n      HTMLElement.register(name, this.prototype);\n      // register the custom type\n      this.ctor = document.registerElement(name, info);\n    },\n\n    findTypeExtension: function(name) {\n      if (name && name.indexOf('-') < 0) {\n        return name;\n      } else {\n        var p = this.findBasePrototype(name);\n        if (p.element) {\n          return this.findTypeExtension(p.element.extends);\n        }\n      }\n    }\n\n  };\n\n  // memoize base prototypes\n  var memoizedBases = {};\n\n  // implementation of 'chainObject' depends on support for __proto__\n  if (Object.__proto__) {\n    prototype.chainObject = function(object, inherited) {\n      if (object && inherited && object !== inherited) {\n        object.__proto__ = inherited;\n      }\n      return object;\n    }\n  } else {\n    prototype.chainObject = function(object, inherited) {\n      if (object && inherited && object !== inherited) {\n        var chained = Object.create(inherited);\n        object = extend(chained, object);\n      }\n      return object;\n    }\n  }\n\n  // On platforms that do not support __proto__ (versions of IE), the prototype\n  // chain of a custom element is simulated via installation of __proto__.\n  // Although custom elements manages this, we install it here so it's\n  // available during desugaring.\n  function ensurePrototypeTraversal(prototype) {\n    if (!Object.__proto__) {\n      var ancestor = Object.getPrototypeOf(prototype);\n      prototype.__proto__ = ancestor;\n      if (isBase(ancestor)) {\n        ancestor.__proto__ = Object.getPrototypeOf(ancestor);\n      }\n    }\n  }\n\n  // exports\n\n  api.declaration.prototype = prototype;\n\n})(Polymer);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(scope) {\n\n  var queue = {\n    // tell the queue to wait for an element to be ready\n    wait: function(element, check, go) {\n      if (this.indexOf(element) === -1) {\n        this.add(element);\n        element.__check = check;\n        element.__go = go;\n      }\n      return (this.indexOf(element) !== 0);\n    },\n    add: function(element) {\n      //console.log('queueing', element.name);\n      queueForElement(element).push(element);\n    },\n    indexOf: function(element) {\n      var i = queueForElement(element).indexOf(element);\n      if (i >= 0 && document.contains(element)) {\n        i += (HTMLImports.useNative || HTMLImports.ready) ? \n          importQueue.length : 1e9;\n      }\n      return i;  \n    },\n    // tell the queue an element is ready to be registered\n    go: function(element) {\n      var readied = this.remove(element);\n      if (readied) {\n        readied.__go.call(readied);\n        readied.__check = readied.__go = null;\n        this.check();\n      }\n    },\n    remove: function(element) {\n      var i = this.indexOf(element);\n      if (i !== 0) {\n        //console.warn('queue order wrong', i);\n        return;\n      }\n      return queueForElement(element).shift();\n    },\n    check: function() {\n      // next\n      var element = this.nextElement();\n      if (element) {\n        element.__check.call(element);\n      }\n      if (this.canReady()) {\n        this.ready();\n        return true;\n      }\n    },\n    nextElement: function() {\n      return nextQueued();\n    },\n    canReady: function() {\n      return !this.waitToReady && this.isEmpty();\n    },\n    isEmpty: function() {\n      return !importQueue.length && !mainQueue.length;\n    },\n    ready: function() {\n      // TODO(sorvell): As an optimization, turn off CE polyfill upgrading\n      // while registering. This way we avoid having to upgrade each document\n      // piecemeal per registration and can instead register all elements\n      // and upgrade once in a batch. Without this optimization, upgrade time\n      // degrades significantly when SD polyfill is used. This is mainly because\n      // querying the document tree for elements is slow under the SD polyfill.\n      if (CustomElements.ready === false) {\n        CustomElements.upgradeDocumentTree(document);\n        CustomElements.ready = true;\n      }\n      if (readyCallbacks) {\n        var fn;\n        while (readyCallbacks.length) {\n          fn = readyCallbacks.shift();\n          fn();\n        }\n      }\n    },\n    addReadyCallback: function(callback) {\n      if (callback) {\n        readyCallbacks.push(callback);\n      }\n    },\n    waitToReady: true\n  };\n\n  var importQueue = [];\n  var mainQueue = [];\n  var readyCallbacks = [];\n\n  function queueForElement(element) {\n    return document.contains(element) ? mainQueue : importQueue;\n  }\n\n  function nextQueued() {\n    return importQueue.length ? importQueue[0] : mainQueue[0];\n  }\n\n  var polymerReadied = false; \n\n  document.addEventListener('WebComponentsReady', function() {\n    CustomElements.ready = false;\n  });\n  \n  function whenPolymerReady(callback) {\n    queue.waitToReady = true;\n    CustomElements.ready = false;\n    HTMLImports.whenImportsReady(function() {\n      queue.addReadyCallback(callback);\n      queue.waitToReady = false;\n      queue.check();\n    });\n  }\n\n  // exports\n  scope.queue = queue;\n  scope.whenPolymerReady = whenPolymerReady;\n})(Polymer);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(scope) {\n\n  var whenPolymerReady = scope.whenPolymerReady;\n\n  function importElements(elementOrFragment, callback) {\n    if (elementOrFragment) {\n      document.head.appendChild(elementOrFragment);\n      whenPolymerReady(callback);\n    } else if (callback) {\n      callback();\n    }\n  }\n\n  function importUrls(urls, callback) {\n    if (urls && urls.length) {\n        var frag = document.createDocumentFragment();\n        for (var i=0, l=urls.length, url, link; (i<l) && (url=urls[i]); i++) {\n          link = document.createElement('link');\n          link.rel = 'import';\n          link.href = url;\n          frag.appendChild(link);\n        }\n        importElements(frag, callback);\n    } else if (callback) {\n      callback();\n    }\n  }\n\n  // exports\n  scope.import = importUrls;\n  scope.importElements = importElements;\n\n})(Polymer);\n","/*\n * Copyright 2013 The Polymer Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n(function(scope) {\n\n  // imports\n\n  var extend = scope.extend;\n  var api = scope.api;\n  var queue = scope.queue;\n  var whenPolymerReady = scope.whenPolymerReady;\n  var getRegisteredPrototype = scope.getRegisteredPrototype;\n  var waitingForPrototype = scope.waitingForPrototype;\n\n  // declarative implementation: <polymer-element>\n\n  var prototype = extend(Object.create(HTMLElement.prototype), {\n\n    createdCallback: function() {\n      if (this.getAttribute('name')) {\n        this.init();\n      }\n    },\n\n    init: function() {\n      // fetch declared values\n      this.name = this.getAttribute('name');\n      this.extends = this.getAttribute('extends');\n      // initiate any async resource fetches\n      this.loadResources();\n      // register when all constraints are met\n      this.registerWhenReady();\n    },\n\n    registerWhenReady: function() {\n     if (this.registered\n       || this.waitingForPrototype(this.name)\n       || this.waitingForQueue()\n       || this.waitingForResources()) {\n          return;\n      }\n      // TODO(sorvell): ends up calling '_register' by virtue\n      // of `waitingForQueue` (see below)\n      queue.go(this);\n    },\n\n    // TODO(sorvell): refactor, this method is private-ish, but it's being\n    // called by the queue object.\n    _register: function() {\n      //console.log('registering', this.name);\n      //console.group('registering', this.name);\n      // warn if extending from a custom element not registered via Polymer\n      if (isCustomTag(this.extends) && !isRegistered(this.extends)) {\n        console.warn('%s is attempting to extend %s, an unregistered element ' +\n            'or one that was not registered with Polymer.', this.name,\n            this.extends);\n      }\n      this.register(this.name, this.extends);\n      this.registered = true;\n      //console.groupEnd();\n    },\n\n    waitingForPrototype: function(name) {\n      if (!getRegisteredPrototype(name)) {\n        // then wait for a prototype\n        waitingForPrototype(name, this);\n        // emulate script if user is not supplying one\n        this.handleNoScript(name);\n        // prototype not ready yet\n        return true;\n      }\n    },\n\n    handleNoScript: function(name) {\n      // if explicitly marked as 'noscript'\n      if (this.hasAttribute('noscript') && !this.noscript) {\n        this.noscript = true;\n        // TODO(sorvell): CustomElements polyfill awareness:\n        // noscript elements should upgrade in logical order\n        // script injection ensures this under native custom elements;\n        // under imports + ce polyfills, scripts run before upgrades.\n        // dependencies should be ready at upgrade time so register\n        // prototype at this time.\n        if (window.CustomElements && !CustomElements.useNative) {\n          Polymer(name);\n        } else {\n          var script = document.createElement('script');\n          script.textContent = 'Polymer(\\'' + name + '\\');';\n          this.appendChild(script);\n        }\n      }\n    },\n\n    waitingForResources: function() {\n      return this._needsResources;\n    },\n\n    // NOTE: Elements must be queued in proper order for inheritance/composition\n    // dependency resolution. Previously this was enforced for inheritance,\n    // and by rule for composition. It's now entirely by rule.\n    waitingForQueue: function() {\n      return queue.wait(this, this.registerWhenReady, this._register);\n    },\n\n    loadResources: function() {\n      this._needsResources = true;\n      this.loadStyles(function() {\n        this._needsResources = false;\n        this.registerWhenReady();\n      }.bind(this));\n    }\n\n  });\n\n  // semi-pluggable APIs \n\n  // TODO(sjmiles): should be fully pluggable (aka decoupled, currently\n  // the various plugins are allowed to depend on each other directly)\n  api.publish(api.declaration, prototype);\n\n  // utility and bookkeeping\n\n  function isRegistered(name) {\n    return Boolean(HTMLElement.getPrototypeForTag(name));\n  }\n\n  function isCustomTag(name) {\n    return (name && name.indexOf('-') >= 0);\n  }\n\n  // boot tasks\n\n  whenPolymerReady(function() {\n    document.body.removeAttribute('unresolved');\n    document.dispatchEvent(\n      new CustomEvent('polymer-ready', {bubbles: true})\n    );\n  });\n\n  // register polymer-element with document\n\n  document.registerElement('polymer-element', {prototype: prototype});\n\n})(Polymer);\n"]}
\ No newline at end of file
diff --git a/bower_components/polymer/polymer.min.js b/bower_components/polymer/polymer.min.js
new file mode 100644
index 0000000..50c334b
--- /dev/null
+++ b/bower_components/polymer/polymer.min.js
@@ -0,0 +1,14 @@
+/**
+ * @license
+ * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+ * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+ * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+ * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+ * Code distributed by Google as part of the polymer project is also
+ * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+ */
+// @version 0.5.1
+window.PolymerGestures={},function(a){var b=!1,c=document.createElement("meta");if(c.createShadowRoot){var d=c.createShadowRoot(),e=document.createElement("span");d.appendChild(e),c.addEventListener("testpath",function(a){a.path&&(b=a.path[0]===e),a.stopPropagation()});var f=new CustomEvent("testpath",{bubbles:!0});document.head.appendChild(c),e.dispatchEvent(f),c.parentNode.removeChild(c),d=e=null}c=null;var g={shadow:function(a){return a?a.shadowRoot||a.webkitShadowRoot:void 0},canTarget:function(a){return a&&Boolean(a.elementFromPoint)},targetingShadow:function(a){var b=this.shadow(a);return this.canTarget(b)?b:void 0},olderShadow:function(a){var b=a.olderShadowRoot;if(!b){var c=a.querySelector("shadow");c&&(b=c.olderShadowRoot)}return b},allShadows:function(a){for(var b=[],c=this.shadow(a);c;)b.push(c),c=this.olderShadow(c);return b},searchRoot:function(a,b,c){var d,e;return a?(d=a.elementFromPoint(b,c),d?e=this.targetingShadow(d):a!==document&&(e=this.olderShadow(a)),this.searchRoot(e,b,c)||d):void 0},owner:function(a){if(!a)return document;for(var b=a;b.parentNode;)b=b.parentNode;return b.nodeType!=Node.DOCUMENT_NODE&&b.nodeType!=Node.DOCUMENT_FRAGMENT_NODE&&(b=document),b},findTarget:function(a){if(b&&a.path&&a.path.length)return a.path[0];var c=a.clientX,d=a.clientY,e=this.owner(a.target);return e.elementFromPoint(c,d)||(e=document),this.searchRoot(e,c,d)},findTouchAction:function(a){var c;if(b&&a.path&&a.path.length){for(var d=a.path,e=0;e<d.length;e++)if(c=d[e],c.nodeType===Node.ELEMENT_NODE&&c.hasAttribute("touch-action"))return c.getAttribute("touch-action")}else for(c=a.target;c;){if(c.nodeType===Node.ELEMENT_NODE&&c.hasAttribute("touch-action"))return c.getAttribute("touch-action");c=c.parentNode||c.host}return"auto"},LCA:function(a,b){if(a===b)return a;if(a&&!b)return a;if(b&&!a)return b;if(!b&&!a)return document;if(a.contains&&a.contains(b))return a;if(b.contains&&b.contains(a))return b;var c=this.depth(a),d=this.depth(b),e=c-d;for(e>=0?a=this.walk(a,e):b=this.walk(b,-e);a&&b&&a!==b;)a=a.parentNode||a.host,b=b.parentNode||b.host;return a},walk:function(a,b){for(var c=0;a&&b>c;c++)a=a.parentNode||a.host;return a},depth:function(a){for(var b=0;a;)b++,a=a.parentNode||a.host;return b},deepContains:function(a,b){var c=this.LCA(a,b);return c===a},insideNode:function(a,b,c){var d=a.getBoundingClientRect();return d.left<=b&&b<=d.right&&d.top<=c&&c<=d.bottom},path:function(a){var c;if(b&&a.path&&a.path.length)c=a.path;else{c=[];for(var d=this.findTarget(a);d;)c.push(d),d=d.parentNode||d.host}return c}};a.targetFinding=g,a.findTarget=g.findTarget.bind(g),a.deepContains=g.deepContains.bind(g),a.insideNode=g.insideNode}(window.PolymerGestures),function(){function a(a){return"html /deep/ "+b(a)}function b(a){return'[touch-action="'+a+'"]'}function c(a){return"{ -ms-touch-action: "+a+"; touch-action: "+a+";}"}var d=["none","auto","pan-x","pan-y",{rule:"pan-x pan-y",selectors:["pan-x pan-y","pan-y pan-x"]},"manipulation"],e="",f="string"==typeof document.head.style.touchAction,g=!window.ShadowDOMPolyfill&&document.head.createShadowRoot;if(f){d.forEach(function(d){String(d)===d?(e+=b(d)+c(d)+"\n",g&&(e+=a(d)+c(d)+"\n")):(e+=d.selectors.map(b)+c(d.rule)+"\n",g&&(e+=d.selectors.map(a)+c(d.rule)+"\n"))});var h=document.createElement("style");h.textContent=e,document.head.appendChild(h)}}(),function(a){var b=["bubbles","cancelable","view","detail","screenX","screenY","clientX","clientY","ctrlKey","altKey","shiftKey","metaKey","button","relatedTarget","pageX","pageY"],c=[!1,!1,null,null,0,0,0,0,!1,!1,!1,!1,0,null,0,0],d=function(){return function(){}},e={preventTap:d,makeBaseEvent:function(a,b){var c=document.createEvent("Event");return 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b(d),d},inheritMetaData:function(a,b){this.inheritObject("observe",a,b),this.inheritObject("publish",a,b),this.inheritObject("reflect",a,b),this.inheritObject("_publishLC",a,b),this.inheritObject("_instanceAttributes",a,b),this.inheritObject("eventDelegates",a,b)},desugarAfterChaining:function(a,b){this.optimizePropertyMaps(this.prototype),this.createPropertyAccessors(this.prototype),this.installBindingDelegate(this.fetchTemplate()),this.installSheets(),this.resolveElementPaths(this),this.accumulateInstanceAttributes(),this.parseHostEvents(),this.addResolvePathApi(),f&&WebComponents.ShadowCSS.shimStyling(this.templateContent(),a,b),this.prototype.registerCallback&&this.prototype.registerCallback(this)},publishConstructor:function(){var a=this.getAttribute("constructor");a&&(window[a]=this.ctor)},generateBasePrototype:function(a){var b=this.findBasePrototype(a);if(!b){var b=HTMLElement.getPrototypeForTag(a);b=this.ensureBaseApi(b),h[a]=b}return b},findBasePrototype:function(a){return h[a]},ensureBaseApi:function(a){if(a.PolymerBase)return a;var b=Object.create(a);return c.publish(c.instance,b),this.mixinMethod(b,a,c.instance.mdv,"bind"),b},mixinMethod:function(a,b,c,d){var e=function(a){return b[d].apply(this,a)};a[d]=function(){return this.mixinSuper=e,c[d].apply(this,arguments)}},inheritObject:function(a,b,c){var d=b[a]||{};b[a]=this.chainObject(d,c[a])},registerPrototype:function(a,b){var c={prototype:this.prototype},d=this.findTypeExtension(b);d&&(c["extends"]=d),HTMLElement.register(a,this.prototype),this.ctor=document.registerElement(a,c)},findTypeExtension:function(a){if(a&&a.indexOf("-")<0)return a;var b=this.findBasePrototype(a);return b.element?this.findTypeExtension(b.element["extends"]):void 0}},h={};g.chainObject=Object.__proto__?function(a,b){return a&&b&&a!==b&&(a.__proto__=b),a}:function(a,b){if(a&&b&&a!==b){var c=Object.create(b);a=e(c,a)}return a},c.declaration.prototype=g}(Polymer),function(a){function b(a){return document.contains(a)?j:i}function c(){return i.length?i[0]:j[0]}function d(a){f.waitToReady=!0,Polymer.endOfMicrotask(function(){HTMLImports.whenReady(function(){f.addReadyCallback(a),f.waitToReady=!1,f.check()})})}function e(a){if(void 0===a)return void f.ready();var b=setTimeout(function(){f.ready()},a);Polymer.whenReady(function(){clearTimeout(b)})}var f={wait:function(a){a.__queue||(a.__queue={},g.push(a))},enqueue:function(a,c,d){var e=a.__queue&&!a.__queue.check;return e&&(b(a).push(a),a.__queue.check=c,a.__queue.go=d),0!==this.indexOf(a)},indexOf:function(a){var c=b(a).indexOf(a);return c>=0&&document.contains(a)&&(c+=HTMLImports.useNative||HTMLImports.ready?i.length:1e9),c},go:function(a){var b=this.remove(a);b&&(a.__queue.flushable=!0,this.addToFlushQueue(b),this.check())},remove:function(a){var c=this.indexOf(a);if(0===c)return b(a).shift()},check:function(){var a=this.nextElement();return a&&a.__queue.check.call(a),this.canReady()?(this.ready(),!0):void 0},nextElement:function(){return c()},canReady:function(){return!this.waitToReady&&this.isEmpty()},isEmpty:function(){for(var a,b=0,c=g.length;c>b&&(a=g[b]);b++)if(a.__queue&&!a.__queue.flushable)return;return!0},addToFlushQueue:function(a){h.push(a)},flush:function(){if(!this.flushing){this.flushing=!0;for(var a;h.length;)a=h.shift(),a.__queue.go.call(a),a.__queue=null;this.flushing=!1}},ready:function(){var a=CustomElements.ready;CustomElements.ready=!1,this.flush(),CustomElements.useNative||CustomElements.upgradeDocumentTree(document),CustomElements.ready=a,Polymer.flush(),requestAnimationFrame(this.flushReadyCallbacks)},addReadyCallback:function(a){a&&k.push(a)},flushReadyCallbacks:function(){if(k)for(var a;k.length;)(a=k.shift())()},waitingFor:function(){for(var a,b=[],c=0,d=g.length;d>c&&(a=g[c]);c++)a.__queue&&!a.__queue.flushable&&b.push(a);return b},waitToReady:!0},g=[],h=[],i=[],j=[],k=[];a.elements=g,a.waitingFor=f.waitingFor.bind(f),a.forceReady=e,a.queue=f,a.whenReady=a.whenPolymerReady=d}(Polymer),function(a){function b(a){return Boolean(HTMLElement.getPrototypeForTag(a))}function c(a){return a&&a.indexOf("-")>=0}var d=a.extend,e=a.api,f=a.queue,g=a.whenReady,h=a.getRegisteredPrototype,i=a.waitingForPrototype,j=d(Object.create(HTMLElement.prototype),{createdCallback:function(){this.getAttribute("name")&&this.init()},init:function(){this.name=this.getAttribute("name"),this["extends"]=this.getAttribute("extends"),f.wait(this),this.loadResources(),this.registerWhenReady()},registerWhenReady:function(){this.registered||this.waitingForPrototype(this.name)||this.waitingForQueue()||this.waitingForResources()||f.go(this)},_register:function(){c(this["extends"])&&!b(this["extends"])&&console.warn("%s is attempting to extend %s, an unregistered element or one that was not registered with Polymer.",this.name,this["extends"]),this.register(this.name,this["extends"]),this.registered=!0},waitingForPrototype:function(a){return h(a)?void 0:(i(a,this),this.handleNoScript(a),!0)},handleNoScript:function(a){this.hasAttribute("noscript")&&!this.noscript&&(this.noscript=!0,Polymer(a))},waitingForResources:function(){return this._needsResources},waitingForQueue:function(){return f.enqueue(this,this.registerWhenReady,this._register)},loadResources:function(){this._needsResources=!0,this.loadStyles(function(){this._needsResources=!1,this.registerWhenReady()}.bind(this))}});e.publish(e.declaration,j),g(function(){document.body.removeAttribute("unresolved"),document.dispatchEvent(new CustomEvent("polymer-ready",{bubbles:!0}))}),document.registerElement("polymer-element",{prototype:j})}(Polymer),function(a){function b(a,b){a?(document.head.appendChild(a),d(b)):b&&b()}function c(a,c){if(a&&a.length){for(var d,e,f=document.createDocumentFragment(),g=0,h=a.length;h>g&&(d=a[g]);g++)e=document.createElement("link"),e.rel="import",e.href=d,f.appendChild(e);b(f,c)}else c&&c()}var d=a.whenReady;a["import"]=c,a.importElements=b}(Polymer),function(){var a=document.createElement("polymer-element");a.setAttribute("name","auto-binding"),a.setAttribute("extends","template"),a.init(),Polymer("auto-binding",{createdCallback:function(){this.syntax=this.bindingDelegate=this.makeSyntax(),Polymer.whenPolymerReady(function(){this.model=this,this.setAttribute("bind",""),this.async(function(){this.marshalNodeReferences(this.parentNode),this.fire("template-bound")})}.bind(this))},makeSyntax:function(){var a=Object.create(Polymer.api.declaration.events),b=this;a.findController=function(){return b.model};var c=new PolymerExpressions,d=c.prepareBinding;return c.prepareBinding=function(b,e,f){return a.prepareEventBinding(b,e,f)||d.call(c,b,e,f)},c}})}();
\ No newline at end of file
diff --git a/bower_components/webcomponentsjs/.bower.json b/bower_components/webcomponentsjs/.bower.json
new file mode 100644
index 0000000..8bda665
--- /dev/null
+++ b/bower_components/webcomponentsjs/.bower.json
@@ -0,0 +1,23 @@
+{
+  "name": "webcomponentsjs",
+  "main": "webcomponents.js",
+  "version": "0.5.5",
+  "homepage": "http://webcomponents.org",
+  "authors": [
+    "The Polymer Authors"
+  ],
+  "keywords": [
+    "webcomponents"
+  ],
+  "license": "BSD",
+  "ignore": [],
+  "_release": "0.5.5",
+  "_resolution": {
+    "type": "version",
+    "tag": "0.5.5",
+    "commit": "46f8f2665f7b91e3f248bc9bdb20a29b91f921b5"
+  },
+  "_source": "git://github.com/Polymer/webcomponentsjs.git",
+  "_target": "^0.5.0",
+  "_originalSource": "Polymer/webcomponentsjs"
+}
\ No newline at end of file
diff --git a/bower_components/webcomponentsjs/CustomElements.js b/bower_components/webcomponentsjs/CustomElements.js
new file mode 100644
index 0000000..8ec15f6
--- /dev/null
+++ b/bower_components/webcomponentsjs/CustomElements.js
@@ -0,0 +1,634 @@
+/**
+ * @license
+ * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+ * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+ * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+ * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+ * Code distributed by Google as part of the polymer project is also
+ * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+ */
+// @version 0.5.5
+if (typeof WeakMap === "undefined") {
+  (function() {
+    var defineProperty = Object.defineProperty;
+    var counter = Date.now() % 1e9;
+    var WeakMap = function() {
+      this.name = "__st" + (Math.random() * 1e9 >>> 0) + (counter++ + "__");
+    };
+    WeakMap.prototype = {
+      set: function(key, value) {
+        var entry = key[this.name];
+        if (entry && entry[0] === key) entry[1] = value; else defineProperty(key, this.name, {
+          value: [ key, value ],
+          writable: true
+        });
+        return this;
+      },
+      get: function(key) {
+        var entry;
+        return (entry = key[this.name]) && entry[0] === key ? entry[1] : undefined;
+      },
+      "delete": function(key) {
+        var entry = key[this.name];
+        if (!entry || entry[0] !== key) return false;
+        entry[0] = entry[1] = undefined;
+        return true;
+      },
+      has: function(key) {
+        var entry = key[this.name];
+        if (!entry) return false;
+        return entry[0] === key;
+      }
+    };
+    window.WeakMap = WeakMap;
+  })();
+}
+
+window.CustomElements = window.CustomElements || {
+  flags: {}
+};
+
+(function(scope) {
+  var flags = scope.flags;
+  var modules = [];
+  var addModule = function(module) {
+    modules.push(module);
+  };
+  var initializeModules = function() {
+    modules.forEach(function(module) {
+      module(scope);
+    });
+  };
+  scope.addModule = addModule;
+  scope.initializeModules = initializeModules;
+  scope.hasNative = Boolean(document.registerElement);
+  scope.useNative = !flags.register && scope.hasNative && !window.ShadowDOMPolyfill && (!window.HTMLImports || HTMLImports.useNative);
+})(CustomElements);
+
+CustomElements.addModule(function(scope) {
+  var IMPORT_LINK_TYPE = window.HTMLImports ? HTMLImports.IMPORT_LINK_TYPE : "none";
+  function forSubtree(node, cb) {
+    findAllElements(node, function(e) {
+      if (cb(e)) {
+        return true;
+      }
+      forRoots(e, cb);
+    });
+    forRoots(node, cb);
+  }
+  function findAllElements(node, find, data) {
+    var e = node.firstElementChild;
+    if (!e) {
+      e = node.firstChild;
+      while (e && e.nodeType !== Node.ELEMENT_NODE) {
+        e = e.nextSibling;
+      }
+    }
+    while (e) {
+      if (find(e, data) !== true) {
+        findAllElements(e, find, data);
+      }
+      e = e.nextElementSibling;
+    }
+    return null;
+  }
+  function forRoots(node, cb) {
+    var root = node.shadowRoot;
+    while (root) {
+      forSubtree(root, cb);
+      root = root.olderShadowRoot;
+    }
+  }
+  var processingDocuments;
+  function forDocumentTree(doc, cb) {
+    processingDocuments = [];
+    _forDocumentTree(doc, cb);
+    processingDocuments = null;
+  }
+  function _forDocumentTree(doc, cb) {
+    doc = wrap(doc);
+    if (processingDocuments.indexOf(doc) >= 0) {
+      return;
+    }
+    processingDocuments.push(doc);
+    var imports = doc.querySelectorAll("link[rel=" + IMPORT_LINK_TYPE + "]");
+    for (var i = 0, l = imports.length, n; i < l && (n = imports[i]); i++) {
+      if (n.import) {
+        _forDocumentTree(n.import, cb);
+      }
+    }
+    cb(doc);
+  }
+  scope.forDocumentTree = forDocumentTree;
+  scope.forSubtree = forSubtree;
+});
+
+CustomElements.addModule(function(scope) {
+  var flags = scope.flags;
+  var forSubtree = scope.forSubtree;
+  var forDocumentTree = scope.forDocumentTree;
+  function addedNode(node) {
+    return added(node) || addedSubtree(node);
+  }
+  function added(node) {
+    if (scope.upgrade(node)) {
+      return true;
+    }
+    attached(node);
+  }
+  function addedSubtree(node) {
+    forSubtree(node, function(e) {
+      if (added(e)) {
+        return true;
+      }
+    });
+  }
+  function attachedNode(node) {
+    attached(node);
+    if (inDocument(node)) {
+      forSubtree(node, function(e) {
+        attached(e);
+      });
+    }
+  }
+  var hasPolyfillMutations = !window.MutationObserver || window.MutationObserver === window.JsMutationObserver;
+  scope.hasPolyfillMutations = hasPolyfillMutations;
+  var isPendingMutations = false;
+  var pendingMutations = [];
+  function deferMutation(fn) {
+    pendingMutations.push(fn);
+    if (!isPendingMutations) {
+      isPendingMutations = true;
+      setTimeout(takeMutations);
+    }
+  }
+  function takeMutations() {
+    isPendingMutations = false;
+    var $p = pendingMutations;
+    for (var i = 0, l = $p.length, p; i < l && (p = $p[i]); i++) {
+      p();
+    }
+    pendingMutations = [];
+  }
+  function attached(element) {
+    if (hasPolyfillMutations) {
+      deferMutation(function() {
+        _attached(element);
+      });
+    } else {
+      _attached(element);
+    }
+  }
+  function _attached(element) {
+    if (element.__upgraded__ && (element.attachedCallback || element.detachedCallback)) {
+      if (!element.__attached && inDocument(element)) {
+        element.__attached = true;
+        if (element.attachedCallback) {
+          element.attachedCallback();
+        }
+      }
+    }
+  }
+  function detachedNode(node) {
+    detached(node);
+    forSubtree(node, function(e) {
+      detached(e);
+    });
+  }
+  function detached(element) {
+    if (hasPolyfillMutations) {
+      deferMutation(function() {
+        _detached(element);
+      });
+    } else {
+      _detached(element);
+    }
+  }
+  function _detached(element) {
+    if (element.__upgraded__ && (element.attachedCallback || element.detachedCallback)) {
+      if (element.__attached && !inDocument(element)) {
+        element.__attached = false;
+        if (element.detachedCallback) {
+          element.detachedCallback();
+        }
+      }
+    }
+  }
+  function inDocument(element) {
+    var p = element;
+    var doc = wrap(document);
+    while (p) {
+      if (p == doc) {
+        return true;
+      }
+      p = p.parentNode || p.host;
+    }
+  }
+  function watchShadow(node) {
+    if (node.shadowRoot && !node.shadowRoot.__watched) {
+      flags.dom && console.log("watching shadow-root for: ", node.localName);
+      var root = node.shadowRoot;
+      while (root) {
+        observe(root);
+        root = root.olderShadowRoot;
+      }
+    }
+  }
+  function handler(mutations) {
+    if (flags.dom) {
+      var mx = mutations[0];
+      if (mx && mx.type === "childList" && mx.addedNodes) {
+        if (mx.addedNodes) {
+          var d = mx.addedNodes[0];
+          while (d && d !== document && !d.host) {
+            d = d.parentNode;
+          }
+          var u = d && (d.URL || d._URL || d.host && d.host.localName) || "";
+          u = u.split("/?").shift().split("/").pop();
+        }
+      }
+      console.group("mutations (%d) [%s]", mutations.length, u || "");
+    }
+    mutations.forEach(function(mx) {
+      if (mx.type === "childList") {
+        forEach(mx.addedNodes, function(n) {
+          if (!n.localName) {
+            return;
+          }
+          addedNode(n);
+        });
+        forEach(mx.removedNodes, function(n) {
+          if (!n.localName) {
+            return;
+          }
+          detachedNode(n);
+        });
+      }
+    });
+    flags.dom && console.groupEnd();
+  }
+  function takeRecords(node) {
+    node = wrap(node);
+    if (!node) {
+      node = wrap(document);
+    }
+    while (node.parentNode) {
+      node = node.parentNode;
+    }
+    var observer = node.__observer;
+    if (observer) {
+      handler(observer.takeRecords());
+      takeMutations();
+    }
+  }
+  var forEach = Array.prototype.forEach.call.bind(Array.prototype.forEach);
+  function observe(inRoot) {
+    if (inRoot.__observer) {
+      return;
+    }
+    var observer = new MutationObserver(handler);
+    observer.observe(inRoot, {
+      childList: true,
+      subtree: true
+    });
+    inRoot.__observer = observer;
+  }
+  function upgradeDocument(doc) {
+    doc = wrap(doc);
+    flags.dom && console.group("upgradeDocument: ", doc.baseURI.split("/").pop());
+    addedNode(doc);
+    observe(doc);
+    flags.dom && console.groupEnd();
+  }
+  function upgradeDocumentTree(doc) {
+    forDocumentTree(doc, upgradeDocument);
+  }
+  var originalCreateShadowRoot = Element.prototype.createShadowRoot;
+  if (originalCreateShadowRoot) {
+    Element.prototype.createShadowRoot = function() {
+      var root = originalCreateShadowRoot.call(this);
+      CustomElements.watchShadow(this);
+      return root;
+    };
+  }
+  scope.watchShadow = watchShadow;
+  scope.upgradeDocumentTree = upgradeDocumentTree;
+  scope.upgradeSubtree = addedSubtree;
+  scope.upgradeAll = addedNode;
+  scope.attachedNode = attachedNode;
+  scope.takeRecords = takeRecords;
+});
+
+CustomElements.addModule(function(scope) {
+  var flags = scope.flags;
+  function upgrade(node) {
+    if (!node.__upgraded__ && node.nodeType === Node.ELEMENT_NODE) {
+      var is = node.getAttribute("is");
+      var definition = scope.getRegisteredDefinition(is || node.localName);
+      if (definition) {
+        if (is && definition.tag == node.localName) {
+          return upgradeWithDefinition(node, definition);
+        } else if (!is && !definition.extends) {
+          return upgradeWithDefinition(node, definition);
+        }
+      }
+    }
+  }
+  function upgradeWithDefinition(element, definition) {
+    flags.upgrade && console.group("upgrade:", element.localName);
+    if (definition.is) {
+      element.setAttribute("is", definition.is);
+    }
+    implementPrototype(element, definition);
+    element.__upgraded__ = true;
+    created(element);
+    scope.attachedNode(element);
+    scope.upgradeSubtree(element);
+    flags.upgrade && console.groupEnd();
+    return element;
+  }
+  function implementPrototype(element, definition) {
+    if (Object.__proto__) {
+      element.__proto__ = definition.prototype;
+    } else {
+      customMixin(element, definition.prototype, definition.native);
+      element.__proto__ = definition.prototype;
+    }
+  }
+  function customMixin(inTarget, inSrc, inNative) {
+    var used = {};
+    var p = inSrc;
+    while (p !== inNative && p !== HTMLElement.prototype) {
+      var keys = Object.getOwnPropertyNames(p);
+      for (var i = 0, k; k = keys[i]; i++) {
+        if (!used[k]) {
+          Object.defineProperty(inTarget, k, Object.getOwnPropertyDescriptor(p, k));
+          used[k] = 1;
+        }
+      }
+      p = Object.getPrototypeOf(p);
+    }
+  }
+  function created(element) {
+    if (element.createdCallback) {
+      element.createdCallback();
+    }
+  }
+  scope.upgrade = upgrade;
+  scope.upgradeWithDefinition = upgradeWithDefinition;
+  scope.implementPrototype = implementPrototype;
+});
+
+CustomElements.addModule(function(scope) {
+  var upgradeDocumentTree = scope.upgradeDocumentTree;
+  var upgrade = scope.upgrade;
+  var upgradeWithDefinition = scope.upgradeWithDefinition;
+  var implementPrototype = scope.implementPrototype;
+  var useNative = scope.useNative;
+  function register(name, options) {
+    var definition = options || {};
+    if (!name) {
+      throw new Error("document.registerElement: first argument `name` must not be empty");
+    }
+    if (name.indexOf("-") < 0) {
+      throw new Error("document.registerElement: first argument ('name') must contain a dash ('-'). Argument provided was '" + String(name) + "'.");
+    }
+    if (isReservedTag(name)) {
+      throw new Error("Failed to execute 'registerElement' on 'Document': Registration failed for type '" + String(name) + "'. The type name is invalid.");
+    }
+    if (getRegisteredDefinition(name)) {
+      throw new Error("DuplicateDefinitionError: a type with name '" + String(name) + "' is already registered");
+    }
+    if (!definition.prototype) {
+      definition.prototype = Object.create(HTMLElement.prototype);
+    }
+    definition.__name = name.toLowerCase();
+    definition.lifecycle = definition.lifecycle || {};
+    definition.ancestry = ancestry(definition.extends);
+    resolveTagName(definition);
+    resolvePrototypeChain(definition);
+    overrideAttributeApi(definition.prototype);
+    registerDefinition(definition.__name, definition);
+    definition.ctor = generateConstructor(definition);
+    definition.ctor.prototype = definition.prototype;
+    definition.prototype.constructor = definition.ctor;
+    if (scope.ready) {
+      upgradeDocumentTree(document);
+    }
+    return definition.ctor;
+  }
+  function overrideAttributeApi(prototype) {
+    if (prototype.setAttribute._polyfilled) {
+      return;
+    }
+    var setAttribute = prototype.setAttribute;
+    prototype.setAttribute = function(name, value) {
+      changeAttribute.call(this, name, value, setAttribute);
+    };
+    var removeAttribute = prototype.removeAttribute;
+    prototype.removeAttribute = function(name) {
+      changeAttribute.call(this, name, null, removeAttribute);
+    };
+    prototype.setAttribute._polyfilled = true;
+  }
+  function changeAttribute(name, value, operation) {
+    name = name.toLowerCase();
+    var oldValue = this.getAttribute(name);
+    operation.apply(this, arguments);
+    var newValue = this.getAttribute(name);
+    if (this.attributeChangedCallback && newValue !== oldValue) {
+      this.attributeChangedCallback(name, oldValue, newValue);
+    }
+  }
+  function isReservedTag(name) {
+    for (var i = 0; i < reservedTagList.length; i++) {
+      if (name === reservedTagList[i]) {
+        return true;
+      }
+    }
+  }
+  var reservedTagList = [ "annotation-xml", "color-profile", "font-face", "font-face-src", "font-face-uri", "font-face-format", "font-face-name", "missing-glyph" ];
+  function ancestry(extnds) {
+    var extendee = getRegisteredDefinition(extnds);
+    if (extendee) {
+      return ancestry(extendee.extends).concat([ extendee ]);
+    }
+    return [];
+  }
+  function resolveTagName(definition) {
+    var baseTag = definition.extends;
+    for (var i = 0, a; a = definition.ancestry[i]; i++) {
+      baseTag = a.is && a.tag;
+    }
+    definition.tag = baseTag || definition.__name;
+    if (baseTag) {
+      definition.is = definition.__name;
+    }
+  }
+  function resolvePrototypeChain(definition) {
+    if (!Object.__proto__) {
+      var nativePrototype = HTMLElement.prototype;
+      if (definition.is) {
+        var inst = document.createElement(definition.tag);
+        var expectedPrototype = Object.getPrototypeOf(inst);
+        if (expectedPrototype === definition.prototype) {
+          nativePrototype = expectedPrototype;
+        }
+      }
+      var proto = definition.prototype, ancestor;
+      while (proto && proto !== nativePrototype) {
+        ancestor = Object.getPrototypeOf(proto);
+        proto.__proto__ = ancestor;
+        proto = ancestor;
+      }
+      definition.native = nativePrototype;
+    }
+  }
+  function instantiate(definition) {
+    return upgradeWithDefinition(domCreateElement(definition.tag), definition);
+  }
+  var registry = {};
+  function getRegisteredDefinition(name) {
+    if (name) {
+      return registry[name.toLowerCase()];
+    }
+  }
+  function registerDefinition(name, definition) {
+    registry[name] = definition;
+  }
+  function generateConstructor(definition) {
+    return function() {
+      return instantiate(definition);
+    };
+  }
+  var HTML_NAMESPACE = "http://www.w3.org/1999/xhtml";
+  function createElementNS(namespace, tag, typeExtension) {
+    if (namespace === HTML_NAMESPACE) {
+      return createElement(tag, typeExtension);
+    } else {
+      return domCreateElementNS(namespace, tag);
+    }
+  }
+  function createElement(tag, typeExtension) {
+    var definition = getRegisteredDefinition(typeExtension || tag);
+    if (definition) {
+      if (tag == definition.tag && typeExtension == definition.is) {
+        return new definition.ctor();
+      }
+      if (!typeExtension && !definition.is) {
+        return new definition.ctor();
+      }
+    }
+    var element;
+    if (typeExtension) {
+      element = createElement(tag);
+      element.setAttribute("is", typeExtension);
+      return element;
+    }
+    element = domCreateElement(tag);
+    if (tag.indexOf("-") >= 0) {
+      implementPrototype(element, HTMLElement);
+    }
+    return element;
+  }
+  function cloneNode(deep) {
+    var n = domCloneNode.call(this, deep);
+    upgrade(n);
+    return n;
+  }
+  var domCreateElement = document.createElement.bind(document);
+  var domCreateElementNS = document.createElementNS.bind(document);
+  var domCloneNode = Node.prototype.cloneNode;
+  var isInstance;
+  if (!Object.__proto__ && !useNative) {
+    isInstance = function(obj, ctor) {
+      var p = obj;
+      while (p) {
+        if (p === ctor.prototype) {
+          return true;
+        }
+        p = p.__proto__;
+      }
+      return false;
+    };
+  } else {
+    isInstance = function(obj, base) {
+      return obj instanceof base;
+    };
+  }
+  document.registerElement = register;
+  document.createElement = createElement;
+  document.createElementNS = createElementNS;
+  Node.prototype.cloneNode = cloneNode;
+  scope.registry = registry;
+  scope.instanceof = isInstance;
+  scope.reservedTagList = reservedTagList;
+  scope.getRegisteredDefinition = getRegisteredDefinition;
+  document.register = document.registerElement;
+});
+
+(function(scope) {
+  var useNative = scope.useNative;
+  var initializeModules = scope.initializeModules;
+  var isIE11OrOlder = /Trident/.test(navigator.userAgent);
+  if (useNative) {
+    var nop = function() {};
+    scope.watchShadow = nop;
+    scope.upgrade = nop;
+    scope.upgradeAll = nop;
+    scope.upgradeDocumentTree = nop;
+    scope.upgradeSubtree = nop;
+    scope.takeRecords = nop;
+    scope.instanceof = function(obj, base) {
+      return obj instanceof base;
+    };
+  } else {
+    initializeModules();
+  }
+  var upgradeDocumentTree = scope.upgradeDocumentTree;
+  if (!window.wrap) {
+    if (window.ShadowDOMPolyfill) {
+      window.wrap = ShadowDOMPolyfill.wrapIfNeeded;
+      window.unwrap = ShadowDOMPolyfill.unwrapIfNeeded;
+    } else {
+      window.wrap = window.unwrap = function(node) {
+        return node;
+      };
+    }
+  }
+  function bootstrap() {
+    upgradeDocumentTree(wrap(document));
+    if (window.HTMLImports) {
+      HTMLImports.__importsParsingHook = function(elt) {
+        upgradeDocumentTree(wrap(elt.import));
+      };
+    }
+    CustomElements.ready = true;
+    setTimeout(function() {
+      CustomElements.readyTime = Date.now();
+      if (window.HTMLImports) {
+        CustomElements.elapsed = CustomElements.readyTime - HTMLImports.readyTime;
+      }
+      document.dispatchEvent(new CustomEvent("WebComponentsReady", {
+        bubbles: true
+      }));
+    });
+  }
+  if (isIE11OrOlder && typeof window.CustomEvent !== "function") {
+    window.CustomEvent = function(inType, params) {
+      params = params || {};
+      var e = document.createEvent("CustomEvent");
+      e.initCustomEvent(inType, Boolean(params.bubbles), Boolean(params.cancelable), params.detail);
+      return e;
+    };
+    window.CustomEvent.prototype = window.Event.prototype;
+  }
+  if (document.readyState === "complete" || scope.flags.eager) {
+    bootstrap();
+  } else if (document.readyState === "interactive" && !window.attachEvent && (!window.HTMLImports || window.HTMLImports.ready)) {
+    bootstrap();
+  } else {
+    var loadEvent = window.HTMLImports && !HTMLImports.ready ? "HTMLImportsLoaded" : "DOMContentLoaded";
+    window.addEventListener(loadEvent, bootstrap);
+  }
+})(window.CustomElements);
\ No newline at end of file
diff --git a/bower_components/webcomponentsjs/CustomElements.min.js b/bower_components/webcomponentsjs/CustomElements.min.js
new file mode 100644
index 0000000..c29c57e
--- /dev/null
+++ b/bower_components/webcomponentsjs/CustomElements.min.js
@@ -0,0 +1,11 @@
+/**
+ * @license
+ * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+ * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+ * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+ * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+ * Code distributed by Google as part of the polymer project is also
+ * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+ */
+// @version 0.5.5
+"undefined"==typeof WeakMap&&!function(){var e=Object.defineProperty,t=Date.now()%1e9,o=function(){this.name="__st"+(1e9*Math.random()>>>0)+(t++ +"__")};o.prototype={set:function(t,o){var n=t[this.name];return n&&n[0]===t?n[1]=o:e(t,this.name,{value:[t,o],writable:!0}),this},get:function(e){var t;return(t=e[this.name])&&t[0]===e?t[1]:void 0},"delete":function(e){var t=e[this.name];return t&&t[0]===e?(t[0]=t[1]=void 0,!0):!1},has:function(e){var t=e[this.name];return t?t[0]===e:!1}},window.WeakMap=o}(),window.CustomElements=window.CustomElements||{flags:{}},function(e){var t=e.flags,o=[],n=function(e){o.push(e)},r=function(){o.forEach(function(t){t(e)})};e.addModule=n,e.initializeModules=r,e.hasNative=Boolean(document.registerElement),e.useNative=!t.register&&e.hasNative&&!window.ShadowDOMPolyfill&&(!window.HTMLImports||HTMLImports.useNative)}(CustomElements),CustomElements.addModule(function(e){function t(e,t){o(e,function(e){return t(e)?!0:void n(e,t)}),n(e,t)}function o(e,t,n){var r=e.firstElementChild;if(!r)for(r=e.firstChild;r&&r.nodeType!==Node.ELEMENT_NODE;)r=r.nextSibling;for(;r;)t(r,n)!==!0&&o(r,t,n),r=r.nextElementSibling;return null}function n(e,o){for(var n=e.shadowRoot;n;)t(n,o),n=n.olderShadowRoot}function r(e,t){i=[],a(e,t),i=null}function a(e,t){if(e=wrap(e),!(i.indexOf(e)>=0)){i.push(e);for(var o,n=e.querySelectorAll("link[rel="+u+"]"),r=0,d=n.length;d>r&&(o=n[r]);r++)o["import"]&&a(o["import"],t);t(e)}}var i,u=window.HTMLImports?HTMLImports.IMPORT_LINK_TYPE:"none";e.forDocumentTree=r,e.forSubtree=t}),CustomElements.addModule(function(e){function t(e){return o(e)||n(e)}function o(t){return e.upgrade(t)?!0:void u(t)}function n(e){y(e,function(e){return o(e)?!0:void 0})}function r(e){u(e),f(e)&&y(e,function(e){u(e)})}function a(e){M.push(e),C||(C=!0,setTimeout(i))}function i(){C=!1;for(var e,t=M,o=0,n=t.length;n>o&&(e=t[o]);o++)e();M=[]}function u(e){E?a(function(){d(e)}):d(e)}function d(e){e.__upgraded__&&(e.attachedCallback||e.detachedCallback)&&!e.__attached&&f(e)&&(e.__attached=!0,e.attachedCallback&&e.attachedCallback())}function c(e){s(e),y(e,function(e){s(e)})}function s(e){E?a(function(){l(e)}):l(e)}function l(e){e.__upgraded__&&(e.attachedCallback||e.detachedCallback)&&e.__attached&&!f(e)&&(e.__attached=!1,e.detachedCallback&&e.detachedCallback())}function f(e){for(var t=e,o=wrap(document);t;){if(t==o)return!0;t=t.parentNode||t.host}}function p(e){if(e.shadowRoot&&!e.shadowRoot.__watched){_.dom&&console.log("watching shadow-root for: ",e.localName);for(var t=e.shadowRoot;t;)h(t),t=t.olderShadowRoot}}function m(e){if(_.dom){var o=e[0];if(o&&"childList"===o.type&&o.addedNodes&&o.addedNodes){for(var n=o.addedNodes[0];n&&n!==document&&!n.host;)n=n.parentNode;var r=n&&(n.URL||n._URL||n.host&&n.host.localName)||"";r=r.split("/?").shift().split("/").pop()}console.group("mutations (%d) [%s]",e.length,r||"")}e.forEach(function(e){"childList"===e.type&&(N(e.addedNodes,function(e){e.localName&&t(e)}),N(e.removedNodes,function(e){e.localName&&c(e)}))}),_.dom&&console.groupEnd()}function w(e){for(e=wrap(e),e||(e=wrap(document));e.parentNode;)e=e.parentNode;var t=e.__observer;t&&(m(t.takeRecords()),i())}function h(e){if(!e.__observer){var t=new MutationObserver(m);t.observe(e,{childList:!0,subtree:!0}),e.__observer=t}}function g(e){e=wrap(e),_.dom&&console.group("upgradeDocument: ",e.baseURI.split("/").pop()),t(e),h(e),_.dom&&console.groupEnd()}function v(e){b(e,g)}var _=e.flags,y=e.forSubtree,b=e.forDocumentTree,E=!window.MutationObserver||window.MutationObserver===window.JsMutationObserver;e.hasPolyfillMutations=E;var C=!1,M=[],N=Array.prototype.forEach.call.bind(Array.prototype.forEach),T=Element.prototype.createShadowRoot;T&&(Element.prototype.createShadowRoot=function(){var e=T.call(this);return 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a(e){e.createdCallback&&e.createdCallback()}var i=e.flags;e.upgrade=t,e.upgradeWithDefinition=o,e.implementPrototype=n}),CustomElements.addModule(function(e){function t(t,n){var d=n||{};if(!t)throw new Error("document.registerElement: first argument `name` must not be empty");if(t.indexOf("-")<0)throw new Error("document.registerElement: first argument ('name') must contain a dash ('-'). Argument provided was '"+String(t)+"'.");if(r(t))throw new Error("Failed to execute 'registerElement' on 'Document': Registration failed for type '"+String(t)+"'. The type name is invalid.");if(c(t))throw new Error("DuplicateDefinitionError: a type with name '"+String(t)+"' is already registered");return d.prototype||(d.prototype=Object.create(HTMLElement.prototype)),d.__name=t.toLowerCase(),d.lifecycle=d.lifecycle||{},d.ancestry=a(d["extends"]),i(d),u(d),o(d.prototype),s(d.__name,d),d.ctor=l(d),d.ctor.prototype=d.prototype,d.prototype.constructor=d.ctor,e.ready&&h(document),d.ctor}function o(e){if(!e.setAttribute._polyfilled){var t=e.setAttribute;e.setAttribute=function(e,o){n.call(this,e,o,t)};var o=e.removeAttribute;e.removeAttribute=function(e){n.call(this,e,null,o)},e.setAttribute._polyfilled=!0}}function n(e,t,o){e=e.toLowerCase();var n=this.getAttribute(e);o.apply(this,arguments);var r=this.getAttribute(e);this.attributeChangedCallback&&r!==n&&this.attributeChangedCallback(e,n,r)}function r(e){for(var t=0;t<b.length;t++)if(e===b[t])return!0}function a(e){var t=c(e);return t?a(t["extends"]).concat([t]):[]}function i(e){for(var t,o=e["extends"],n=0;t=e.ancestry[n];n++)o=t.is&&t.tag;e.tag=o||e.__name,o&&(e.is=e.__name)}function u(e){if(!Object.__proto__){var t=HTMLElement.prototype;if(e.is){var o=document.createElement(e.tag),n=Object.getPrototypeOf(o);n===e.prototype&&(t=n)}for(var r,a=e.prototype;a&&a!==t;)r=Object.getPrototypeOf(a),a.__proto__=r,a=r;e["native"]=t}}function d(e){return v(M(e.tag),e)}function c(e){return e?E[e.toLowerCase()]:void 0}function s(e,t){E[e]=t}function l(e){return function(){return d(e)}}function f(e,t,o){return e===C?p(t,o):N(e,t)}function p(e,t){var o=c(t||e);if(o){if(e==o.tag&&t==o.is)return new o.ctor;if(!t&&!o.is)return new o.ctor}var n;return t?(n=p(e),n.setAttribute("is",t),n):(n=M(e),e.indexOf("-")>=0&&_(n,HTMLElement),n)}function m(e){var t=T.call(this,e);return g(t),t}var w,h=e.upgradeDocumentTree,g=e.upgrade,v=e.upgradeWithDefinition,_=e.implementPrototype,y=e.useNative,b=["annotation-xml","color-profile","font-face","font-face-src","font-face-uri","font-face-format","font-face-name","missing-glyph"],E={},C="http://www.w3.org/1999/xhtml",M=document.createElement.bind(document),N=document.createElementNS.bind(document),T=Node.prototype.cloneNode;w=Object.__proto__||y?function(e,t){return e instanceof t}:function(e,t){for(var o=e;o;){if(o===t.prototype)return!0;o=o.__proto__}return!1},document.registerElement=t,document.createElement=p,document.createElementNS=f,Node.prototype.cloneNode=m,e.registry=E,e["instanceof"]=w,e.reservedTagList=b,e.getRegisteredDefinition=c,document.register=document.registerElement}),function(e){function t(){i(wrap(document)),window.HTMLImports&&(HTMLImports.__importsParsingHook=function(e){i(wrap(e["import"]))}),CustomElements.ready=!0,setTimeout(function(){CustomElements.readyTime=Date.now(),window.HTMLImports&&(CustomElements.elapsed=CustomElements.readyTime-HTMLImports.readyTime),document.dispatchEvent(new CustomEvent("WebComponentsReady",{bubbles:!0}))})}var o=e.useNative,n=e.initializeModules,r=/Trident/.test(navigator.userAgent);if(o){var a=function(){};e.watchShadow=a,e.upgrade=a,e.upgradeAll=a,e.upgradeDocumentTree=a,e.upgradeSubtree=a,e.takeRecords=a,e["instanceof"]=function(e,t){return e instanceof t}}else n();var i=e.upgradeDocumentTree;if(window.wrap||(window.ShadowDOMPolyfill?(window.wrap=ShadowDOMPolyfill.wrapIfNeeded,window.unwrap=ShadowDOMPolyfill.unwrapIfNeeded):window.wrap=window.unwrap=function(e){return e}),r&&"function"!=typeof window.CustomEvent&&(window.CustomEvent=function(e,t){t=t||{};var o=document.createEvent("CustomEvent");return o.initCustomEvent(e,Boolean(t.bubbles),Boolean(t.cancelable),t.detail),o},window.CustomEvent.prototype=window.Event.prototype),"complete"===document.readyState||e.flags.eager)t();else if("interactive"!==document.readyState||window.attachEvent||window.HTMLImports&&!window.HTMLImports.ready){var u=window.HTMLImports&&!HTMLImports.ready?"HTMLImportsLoaded":"DOMContentLoaded";window.addEventListener(u,t)}else t()}(window.CustomElements);
\ No newline at end of file
diff --git a/bower_components/webcomponentsjs/HTMLImports.js b/bower_components/webcomponentsjs/HTMLImports.js
new file mode 100644
index 0000000..9a194e1
--- /dev/null
+++ b/bower_components/webcomponentsjs/HTMLImports.js
@@ -0,0 +1,764 @@
+/**
+ * @license
+ * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+ * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+ * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+ * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+ * Code distributed by Google as part of the polymer project is also
+ * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+ */
+// @version 0.5.5
+if (typeof WeakMap === "undefined") {
+  (function() {
+    var defineProperty = Object.defineProperty;
+    var counter = Date.now() % 1e9;
+    var WeakMap = function() {
+      this.name = "__st" + (Math.random() * 1e9 >>> 0) + (counter++ + "__");
+    };
+    WeakMap.prototype = {
+      set: function(key, value) {
+        var entry = key[this.name];
+        if (entry && entry[0] === key) entry[1] = value; else defineProperty(key, this.name, {
+          value: [ key, value ],
+          writable: true
+        });
+        return this;
+      },
+      get: function(key) {
+        var entry;
+        return (entry = key[this.name]) && entry[0] === key ? entry[1] : undefined;
+      },
+      "delete": function(key) {
+        var entry = key[this.name];
+        if (!entry || entry[0] !== key) return false;
+        entry[0] = entry[1] = undefined;
+        return true;
+      },
+      has: function(key) {
+        var entry = key[this.name];
+        if (!entry) return false;
+        return entry[0] === key;
+      }
+    };
+    window.WeakMap = WeakMap;
+  })();
+}
+
+window.HTMLImports = window.HTMLImports || {
+  flags: {}
+};
+
+(function(scope) {
+  var IMPORT_LINK_TYPE = "import";
+  var useNative = Boolean(IMPORT_LINK_TYPE in document.createElement("link"));
+  var hasShadowDOMPolyfill = Boolean(window.ShadowDOMPolyfill);
+  var wrap = function(node) {
+    return hasShadowDOMPolyfill ? ShadowDOMPolyfill.wrapIfNeeded(node) : node;
+  };
+  var rootDocument = wrap(document);
+  var currentScriptDescriptor = {
+    get: function() {
+      var script = HTMLImports.currentScript || document.currentScript || (document.readyState !== "complete" ? document.scripts[document.scripts.length - 1] : null);
+      return wrap(script);
+    },
+    configurable: true
+  };
+  Object.defineProperty(document, "_currentScript", currentScriptDescriptor);
+  Object.defineProperty(rootDocument, "_currentScript", currentScriptDescriptor);
+  var isIE = /Trident|Edge/.test(navigator.userAgent);
+  function whenReady(callback, doc) {
+    doc = doc || rootDocument;
+    whenDocumentReady(function() {
+      watchImportsLoad(callback, doc);
+    }, doc);
+  }
+  var requiredReadyState = isIE ? "complete" : "interactive";
+  var READY_EVENT = "readystatechange";
+  function isDocumentReady(doc) {
+    return doc.readyState === "complete" || doc.readyState === requiredReadyState;
+  }
+  function whenDocumentReady(callback, doc) {
+    if (!isDocumentReady(doc)) {
+      var checkReady = function() {
+        if (doc.readyState === "complete" || doc.readyState === requiredReadyState) {
+          doc.removeEventListener(READY_EVENT, checkReady);
+          whenDocumentReady(callback, doc);
+        }
+      };
+      doc.addEventListener(READY_EVENT, checkReady);
+    } else if (callback) {
+      callback();
+    }
+  }
+  function markTargetLoaded(event) {
+    event.target.__loaded = true;
+  }
+  function watchImportsLoad(callback, doc) {
+    var imports = doc.querySelectorAll("link[rel=import]");
+    var loaded = 0, l = imports.length;
+    function checkDone(d) {
+      if (loaded == l && callback) {
+        callback();
+      }
+    }
+    function loadedImport(e) {
+      markTargetLoaded(e);
+      loaded++;
+      checkDone();
+    }
+    if (l) {
+      for (var i = 0, imp; i < l && (imp = imports[i]); i++) {
+        if (isImportLoaded(imp)) {
+          loadedImport.call(imp, {
+            target: imp
+          });
+        } else {
+          imp.addEventListener("load", loadedImport);
+          imp.addEventListener("error", loadedImport);
+        }
+      }
+    } else {
+      checkDone();
+    }
+  }
+  function isImportLoaded(link) {
+    return useNative ? link.__loaded || link.import && link.import.readyState !== "loading" : link.__importParsed;
+  }
+  if (useNative) {
+    new MutationObserver(function(mxns) {
+      for (var i = 0, l = mxns.length, m; i < l && (m = mxns[i]); i++) {
+        if (m.addedNodes) {
+          handleImports(m.addedNodes);
+        }
+      }
+    }).observe(document.head, {
+      childList: true
+    });
+    function handleImports(nodes) {
+      for (var i = 0, l = nodes.length, n; i < l && (n = nodes[i]); i++) {
+        if (isImport(n)) {
+          handleImport(n);
+        }
+      }
+    }
+    function isImport(element) {
+      return element.localName === "link" && element.rel === "import";
+    }
+    function handleImport(element) {
+      var loaded = element.import;
+      if (loaded) {
+        markTargetLoaded({
+          target: element
+        });
+      } else {
+        element.addEventListener("load", markTargetLoaded);
+        element.addEventListener("error", markTargetLoaded);
+      }
+    }
+    (function() {
+      if (document.readyState === "loading") {
+        var imports = document.querySelectorAll("link[rel=import]");
+        for (var i = 0, l = imports.length, imp; i < l && (imp = imports[i]); i++) {
+          handleImport(imp);
+        }
+      }
+    })();
+  }
+  whenReady(function() {
+    HTMLImports.ready = true;
+    HTMLImports.readyTime = new Date().getTime();
+    var evt = rootDocument.createEvent("CustomEvent");
+    evt.initCustomEvent("HTMLImportsLoaded", true, true, {});
+    rootDocument.dispatchEvent(evt);
+  });
+  scope.IMPORT_LINK_TYPE = IMPORT_LINK_TYPE;
+  scope.useNative = useNative;
+  scope.rootDocument = rootDocument;
+  scope.whenReady = whenReady;
+  scope.isIE = isIE;
+})(HTMLImports);
+
+(function(scope) {
+  var modules = [];
+  var addModule = function(module) {
+    modules.push(module);
+  };
+  var initializeModules = function() {
+    modules.forEach(function(module) {
+      module(scope);
+    });
+  };
+  scope.addModule = addModule;
+  scope.initializeModules = initializeModules;
+})(HTMLImports);
+
+HTMLImports.addModule(function(scope) {
+  var CSS_URL_REGEXP = /(url\()([^)]*)(\))/g;
+  var CSS_IMPORT_REGEXP = /(@import[\s]+(?!url\())([^;]*)(;)/g;
+  var path = {
+    resolveUrlsInStyle: function(style) {
+      var doc = style.ownerDocument;
+      var resolver = doc.createElement("a");
+      style.textContent = this.resolveUrlsInCssText(style.textContent, resolver);
+      return style;
+    },
+    resolveUrlsInCssText: function(cssText, urlObj) {
+      var r = this.replaceUrls(cssText, urlObj, CSS_URL_REGEXP);
+      r = this.replaceUrls(r, urlObj, CSS_IMPORT_REGEXP);
+      return r;
+    },
+    replaceUrls: function(text, urlObj, regexp) {
+      return text.replace(regexp, function(m, pre, url, post) {
+        var urlPath = url.replace(/["']/g, "");
+        urlObj.href = urlPath;
+        urlPath = urlObj.href;
+        return pre + "'" + urlPath + "'" + post;
+      });
+    }
+  };
+  scope.path = path;
+});
+
+HTMLImports.addModule(function(scope) {
+  var xhr = {
+    async: true,
+    ok: function(request) {
+      return request.status >= 200 && request.status < 300 || request.status === 304 || request.status === 0;
+    },
+    load: function(url, next, nextContext) {
+      var request = new XMLHttpRequest();
+      if (scope.flags.debug || scope.flags.bust) {
+        url += "?" + Math.random();
+      }
+      request.open("GET", url, xhr.async);
+      request.addEventListener("readystatechange", function(e) {
+        if (request.readyState === 4) {
+          var locationHeader = request.getResponseHeader("Location");
+          var redirectedUrl = null;
+          if (locationHeader) {
+            var redirectedUrl = locationHeader.substr(0, 1) === "/" ? location.origin + locationHeader : locationHeader;
+          }
+          next.call(nextContext, !xhr.ok(request) && request, request.response || request.responseText, redirectedUrl);
+        }
+      });
+      request.send();
+      return request;
+    },
+    loadDocument: function(url, next, nextContext) {
+      this.load(url, next, nextContext).responseType = "document";
+    }
+  };
+  scope.xhr = xhr;
+});
+
+HTMLImports.addModule(function(scope) {
+  var xhr = scope.xhr;
+  var flags = scope.flags;
+  var Loader = function(onLoad, onComplete) {
+    this.cache = {};
+    this.onload = onLoad;
+    this.oncomplete = onComplete;
+    this.inflight = 0;
+    this.pending = {};
+  };
+  Loader.prototype = {
+    addNodes: function(nodes) {
+      this.inflight += nodes.length;
+      for (var i = 0, l = nodes.length, n; i < l && (n = nodes[i]); i++) {
+        this.require(n);
+      }
+      this.checkDone();
+    },
+    addNode: function(node) {
+      this.inflight++;
+      this.require(node);
+      this.checkDone();
+    },
+    require: function(elt) {
+      var url = elt.src || elt.href;
+      elt.__nodeUrl = url;
+      if (!this.dedupe(url, elt)) {
+        this.fetch(url, elt);
+      }
+    },
+    dedupe: function(url, elt) {
+      if (this.pending[url]) {
+        this.pending[url].push(elt);
+        return true;
+      }
+      var resource;
+      if (this.cache[url]) {
+        this.onload(url, elt, this.cache[url]);
+        this.tail();
+        return true;
+      }
+      this.pending[url] = [ elt ];
+      return false;
+    },
+    fetch: function(url, elt) {
+      flags.load && console.log("fetch", url, elt);
+      if (!url) {
+        setTimeout(function() {
+          this.receive(url, elt, {
+            error: "href must be specified"
+          }, null);
+        }.bind(this), 0);
+      } else if (url.match(/^data:/)) {
+        var pieces = url.split(",");
+        var header = pieces[0];
+        var body = pieces[1];
+        if (header.indexOf(";base64") > -1) {
+          body = atob(body);
+        } else {
+          body = decodeURIComponent(body);
+        }
+        setTimeout(function() {
+          this.receive(url, elt, null, body);
+        }.bind(this), 0);
+      } else {
+        var receiveXhr = function(err, resource, redirectedUrl) {
+          this.receive(url, elt, err, resource, redirectedUrl);
+        }.bind(this);
+        xhr.load(url, receiveXhr);
+      }
+    },
+    receive: function(url, elt, err, resource, redirectedUrl) {
+      this.cache[url] = resource;
+      var $p = this.pending[url];
+      for (var i = 0, l = $p.length, p; i < l && (p = $p[i]); i++) {
+        this.onload(url, p, resource, err, redirectedUrl);
+        this.tail();
+      }
+      this.pending[url] = null;
+    },
+    tail: function() {
+      --this.inflight;
+      this.checkDone();
+    },
+    checkDone: function() {
+      if (!this.inflight) {
+        this.oncomplete();
+      }
+    }
+  };
+  scope.Loader = Loader;
+});
+
+HTMLImports.addModule(function(scope) {
+  var Observer = function(addCallback) {
+    this.addCallback = addCallback;
+    this.mo = new MutationObserver(this.handler.bind(this));
+  };
+  Observer.prototype = {
+    handler: function(mutations) {
+      for (var i = 0, l = mutations.length, m; i < l && (m = mutations[i]); i++) {
+        if (m.type === "childList" && m.addedNodes.length) {
+          this.addedNodes(m.addedNodes);
+        }
+      }
+    },
+    addedNodes: function(nodes) {
+      if (this.addCallback) {
+        this.addCallback(nodes);
+      }
+      for (var i = 0, l = nodes.length, n, loading; i < l && (n = nodes[i]); i++) {
+        if (n.children && n.children.length) {
+          this.addedNodes(n.children);
+        }
+      }
+    },
+    observe: function(root) {
+      this.mo.observe(root, {
+        childList: true,
+        subtree: true
+      });
+    }
+  };
+  scope.Observer = Observer;
+});
+
+HTMLImports.addModule(function(scope) {
+  var path = scope.path;
+  var rootDocument = scope.rootDocument;
+  var flags = scope.flags;
+  var isIE = scope.isIE;
+  var IMPORT_LINK_TYPE = scope.IMPORT_LINK_TYPE;
+  var IMPORT_SELECTOR = "link[rel=" + IMPORT_LINK_TYPE + "]";
+  var importParser = {
+    documentSelectors: IMPORT_SELECTOR,
+    importsSelectors: [ IMPORT_SELECTOR, "link[rel=stylesheet]", "style", "script:not([type])", 'script[type="text/javascript"]' ].join(","),
+    map: {
+      link: "parseLink",
+      script: "parseScript",
+      style: "parseStyle"
+    },
+    dynamicElements: [],
+    parseNext: function() {
+      var next = this.nextToParse();
+      if (next) {
+        this.parse(next);
+      }
+    },
+    parse: function(elt) {
+      if (this.isParsed(elt)) {
+        flags.parse && console.log("[%s] is already parsed", elt.localName);
+        return;
+      }
+      var fn = this[this.map[elt.localName]];
+      if (fn) {
+        this.markParsing(elt);
+        fn.call(this, elt);
+      }
+    },
+    parseDynamic: function(elt, quiet) {
+      this.dynamicElements.push(elt);
+      if (!quiet) {
+        this.parseNext();
+      }
+    },
+    markParsing: function(elt) {
+      flags.parse && console.log("parsing", elt);
+      this.parsingElement = elt;
+    },
+    markParsingComplete: function(elt) {
+      elt.__importParsed = true;
+      this.markDynamicParsingComplete(elt);
+      if (elt.__importElement) {
+        elt.__importElement.__importParsed = true;
+        this.markDynamicParsingComplete(elt.__importElement);
+      }
+      this.parsingElement = null;
+      flags.parse && console.log("completed", elt);
+    },
+    markDynamicParsingComplete: function(elt) {
+      var i = this.dynamicElements.indexOf(elt);
+      if (i >= 0) {
+        this.dynamicElements.splice(i, 1);
+      }
+    },
+    parseImport: function(elt) {
+      if (HTMLImports.__importsParsingHook) {
+        HTMLImports.__importsParsingHook(elt);
+      }
+      if (elt.import) {
+        elt.import.__importParsed = true;
+      }
+      this.markParsingComplete(elt);
+      if (elt.__resource && !elt.__error) {
+        elt.dispatchEvent(new CustomEvent("load", {
+          bubbles: false
+        }));
+      } else {
+        elt.dispatchEvent(new CustomEvent("error", {
+          bubbles: false
+        }));
+      }
+      if (elt.__pending) {
+        var fn;
+        while (elt.__pending.length) {
+          fn = elt.__pending.shift();
+          if (fn) {
+            fn({
+              target: elt
+            });
+          }
+        }
+      }
+      this.parseNext();
+    },
+    parseLink: function(linkElt) {
+      if (nodeIsImport(linkElt)) {
+        this.parseImport(linkElt);
+      } else {
+        linkElt.href = linkElt.href;
+        this.parseGeneric(linkElt);
+      }
+    },
+    parseStyle: function(elt) {
+      var src = elt;
+      elt = cloneStyle(elt);
+      elt.__importElement = src;
+      this.parseGeneric(elt);
+    },
+    parseGeneric: function(elt) {
+      this.trackElement(elt);
+      this.addElementToDocument(elt);
+    },
+    rootImportForElement: function(elt) {
+      var n = elt;
+      while (n.ownerDocument.__importLink) {
+        n = n.ownerDocument.__importLink;
+      }
+      return n;
+    },
+    addElementToDocument: function(elt) {
+      var port = this.rootImportForElement(elt.__importElement || elt);
+      port.parentNode.insertBefore(elt, port);
+    },
+    trackElement: function(elt, callback) {
+      var self = this;
+      var done = function(e) {
+        if (callback) {
+          callback(e);
+        }
+        self.markParsingComplete(elt);
+        self.parseNext();
+      };
+      elt.addEventListener("load", done);
+      elt.addEventListener("error", done);
+      if (isIE && elt.localName === "style") {
+        var fakeLoad = false;
+        if (elt.textContent.indexOf("@import") == -1) {
+          fakeLoad = true;
+        } else if (elt.sheet) {
+          fakeLoad = true;
+          var csr = elt.sheet.cssRules;
+          var len = csr ? csr.length : 0;
+          for (var i = 0, r; i < len && (r = csr[i]); i++) {
+            if (r.type === CSSRule.IMPORT_RULE) {
+              fakeLoad = fakeLoad && Boolean(r.styleSheet);
+            }
+          }
+        }
+        if (fakeLoad) {
+          elt.dispatchEvent(new CustomEvent("load", {
+            bubbles: false
+          }));
+        }
+      }
+    },
+    parseScript: function(scriptElt) {
+      var script = document.createElement("script");
+      script.__importElement = scriptElt;
+      script.src = scriptElt.src ? scriptElt.src : generateScriptDataUrl(scriptElt);
+      scope.currentScript = scriptElt;
+      this.trackElement(script, function(e) {
+        script.parentNode.removeChild(script);
+        scope.currentScript = null;
+      });
+      this.addElementToDocument(script);
+    },
+    nextToParse: function() {
+      this._mayParse = [];
+      return !this.parsingElement && (this.nextToParseInDoc(rootDocument) || this.nextToParseDynamic());
+    },
+    nextToParseInDoc: function(doc, link) {
+      if (doc && this._mayParse.indexOf(doc) < 0) {
+        this._mayParse.push(doc);
+        var nodes = doc.querySelectorAll(this.parseSelectorsForNode(doc));
+        for (var i = 0, l = nodes.length, p = 0, n; i < l && (n = nodes[i]); i++) {
+          if (!this.isParsed(n)) {
+            if (this.hasResource(n)) {
+              return nodeIsImport(n) ? this.nextToParseInDoc(n.import, n) : n;
+            } else {
+              return;
+            }
+          }
+        }
+      }
+      return link;
+    },
+    nextToParseDynamic: function() {
+      return this.dynamicElements[0];
+    },
+    parseSelectorsForNode: function(node) {
+      var doc = node.ownerDocument || node;
+      return doc === rootDocument ? this.documentSelectors : this.importsSelectors;
+    },
+    isParsed: function(node) {
+      return node.__importParsed;
+    },
+    needsDynamicParsing: function(elt) {
+      return this.dynamicElements.indexOf(elt) >= 0;
+    },
+    hasResource: function(node) {
+      if (nodeIsImport(node) && node.import === undefined) {
+        return false;
+      }
+      return true;
+    }
+  };
+  function nodeIsImport(elt) {
+    return elt.localName === "link" && elt.rel === IMPORT_LINK_TYPE;
+  }
+  function generateScriptDataUrl(script) {
+    var scriptContent = generateScriptContent(script);
+    return "data:text/javascript;charset=utf-8," + encodeURIComponent(scriptContent);
+  }
+  function generateScriptContent(script) {
+    return script.textContent + generateSourceMapHint(script);
+  }
+  function generateSourceMapHint(script) {
+    var owner = script.ownerDocument;
+    owner.__importedScripts = owner.__importedScripts || 0;
+    var moniker = script.ownerDocument.baseURI;
+    var num = owner.__importedScripts ? "-" + owner.__importedScripts : "";
+    owner.__importedScripts++;
+    return "\n//# sourceURL=" + moniker + num + ".js\n";
+  }
+  function cloneStyle(style) {
+    var clone = style.ownerDocument.createElement("style");
+    clone.textContent = style.textContent;
+    path.resolveUrlsInStyle(clone);
+    return clone;
+  }
+  scope.parser = importParser;
+  scope.IMPORT_SELECTOR = IMPORT_SELECTOR;
+});
+
+HTMLImports.addModule(function(scope) {
+  var flags = scope.flags;
+  var IMPORT_LINK_TYPE = scope.IMPORT_LINK_TYPE;
+  var IMPORT_SELECTOR = scope.IMPORT_SELECTOR;
+  var rootDocument = scope.rootDocument;
+  var Loader = scope.Loader;
+  var Observer = scope.Observer;
+  var parser = scope.parser;
+  var importer = {
+    documents: {},
+    documentPreloadSelectors: IMPORT_SELECTOR,
+    importsPreloadSelectors: [ IMPORT_SELECTOR ].join(","),
+    loadNode: function(node) {
+      importLoader.addNode(node);
+    },
+    loadSubtree: function(parent) {
+      var nodes = this.marshalNodes(parent);
+      importLoader.addNodes(nodes);
+    },
+    marshalNodes: function(parent) {
+      return parent.querySelectorAll(this.loadSelectorsForNode(parent));
+    },
+    loadSelectorsForNode: function(node) {
+      var doc = node.ownerDocument || node;
+      return doc === rootDocument ? this.documentPreloadSelectors : this.importsPreloadSelectors;
+    },
+    loaded: function(url, elt, resource, err, redirectedUrl) {
+      flags.load && console.log("loaded", url, elt);
+      elt.__resource = resource;
+      elt.__error = err;
+      if (isImportLink(elt)) {
+        var doc = this.documents[url];
+        if (doc === undefined) {
+          doc = err ? null : makeDocument(resource, redirectedUrl || url);
+          if (doc) {
+            doc.__importLink = elt;
+            this.bootDocument(doc);
+          }
+          this.documents[url] = doc;
+        }
+        elt.import = doc;
+      }
+      parser.parseNext();
+    },
+    bootDocument: function(doc) {
+      this.loadSubtree(doc);
+      this.observer.observe(doc);
+      parser.parseNext();
+    },
+    loadedAll: function() {
+      parser.parseNext();
+    }
+  };
+  var importLoader = new Loader(importer.loaded.bind(importer), importer.loadedAll.bind(importer));
+  importer.observer = new Observer();
+  function isImportLink(elt) {
+    return isLinkRel(elt, IMPORT_LINK_TYPE);
+  }
+  function isLinkRel(elt, rel) {
+    return elt.localName === "link" && elt.getAttribute("rel") === rel;
+  }
+  function hasBaseURIAccessor(doc) {
+    return !!Object.getOwnPropertyDescriptor(doc, "baseURI");
+  }
+  function makeDocument(resource, url) {
+    var doc = document.implementation.createHTMLDocument(IMPORT_LINK_TYPE);
+    doc._URL = url;
+    var base = doc.createElement("base");
+    base.setAttribute("href", url);
+    if (!doc.baseURI && !hasBaseURIAccessor(doc)) {
+      Object.defineProperty(doc, "baseURI", {
+        value: url
+      });
+    }
+    var meta = doc.createElement("meta");
+    meta.setAttribute("charset", "utf-8");
+    doc.head.appendChild(meta);
+    doc.head.appendChild(base);
+    doc.body.innerHTML = resource;
+    if (window.HTMLTemplateElement && HTMLTemplateElement.bootstrap) {
+      HTMLTemplateElement.bootstrap(doc);
+    }
+    return doc;
+  }
+  if (!document.baseURI) {
+    var baseURIDescriptor = {
+      get: function() {
+        var base = document.querySelector("base");
+        return base ? base.href : window.location.href;
+      },
+      configurable: true
+    };
+    Object.defineProperty(document, "baseURI", baseURIDescriptor);
+    Object.defineProperty(rootDocument, "baseURI", baseURIDescriptor);
+  }
+  scope.importer = importer;
+  scope.importLoader = importLoader;
+});
+
+HTMLImports.addModule(function(scope) {
+  var parser = scope.parser;
+  var importer = scope.importer;
+  var dynamic = {
+    added: function(nodes) {
+      var owner, parsed, loading;
+      for (var i = 0, l = nodes.length, n; i < l && (n = nodes[i]); i++) {
+        if (!owner) {
+          owner = n.ownerDocument;
+          parsed = parser.isParsed(owner);
+        }
+        loading = this.shouldLoadNode(n);
+        if (loading) {
+          importer.loadNode(n);
+        }
+        if (this.shouldParseNode(n) && parsed) {
+          parser.parseDynamic(n, loading);
+        }
+      }
+    },
+    shouldLoadNode: function(node) {
+      return node.nodeType === 1 && matches.call(node, importer.loadSelectorsForNode(node));
+    },
+    shouldParseNode: function(node) {
+      return node.nodeType === 1 && matches.call(node, parser.parseSelectorsForNode(node));
+    }
+  };
+  importer.observer.addCallback = dynamic.added.bind(dynamic);
+  var matches = HTMLElement.prototype.matches || HTMLElement.prototype.matchesSelector || HTMLElement.prototype.webkitMatchesSelector || HTMLElement.prototype.mozMatchesSelector || HTMLElement.prototype.msMatchesSelector;
+});
+
+(function(scope) {
+  var initializeModules = scope.initializeModules;
+  var isIE = scope.isIE;
+  if (scope.useNative) {
+    return;
+  }
+  if (isIE && typeof window.CustomEvent !== "function") {
+    window.CustomEvent = function(inType, params) {
+      params = params || {};
+      var e = document.createEvent("CustomEvent");
+      e.initCustomEvent(inType, Boolean(params.bubbles), Boolean(params.cancelable), params.detail);
+      return e;
+    };
+    window.CustomEvent.prototype = window.Event.prototype;
+  }
+  initializeModules();
+  var rootDocument = scope.rootDocument;
+  function bootstrap() {
+    HTMLImports.importer.bootDocument(rootDocument);
+  }
+  if (document.readyState === "complete" || document.readyState === "interactive" && !window.attachEvent) {
+    bootstrap();
+  } else {
+    document.addEventListener("DOMContentLoaded", bootstrap);
+  }
+})(HTMLImports);
\ No newline at end of file
diff --git a/bower_components/webcomponentsjs/HTMLImports.min.js b/bower_components/webcomponentsjs/HTMLImports.min.js
new file mode 100644
index 0000000..a1a45ce
--- /dev/null
+++ b/bower_components/webcomponentsjs/HTMLImports.min.js
@@ -0,0 +1,11 @@
+/**
+ * @license
+ * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+ * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+ * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+ * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+ * Code distributed by Google as part of the polymer project is also
+ * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+ */
+// @version 0.5.5
+"undefined"==typeof WeakMap&&!function(){var e=Object.defineProperty,t=Date.now()%1e9,n=function(){this.name="__st"+(1e9*Math.random()>>>0)+(t++ +"__")};n.prototype={set:function(t,n){var r=t[this.name];return r&&r[0]===t?r[1]=n:e(t,this.name,{value:[t,n],writable:!0}),this},get:function(e){var t;return(t=e[this.name])&&t[0]===e?t[1]:void 0},"delete":function(e){var t=e[this.name];return t&&t[0]===e?(t[0]=t[1]=void 0,!0):!1},has:function(e){var t=e[this.name];return t?t[0]===e:!1}},window.WeakMap=n}(),window.HTMLImports=window.HTMLImports||{flags:{}},function(e){function t(e,t){t=t||h,r(function(){i(e,t)},t)}function n(e){return"complete"===e.readyState||e.readyState===g}function r(e,t){if(n(t))e&&e();else{var o=function(){("complete"===t.readyState||t.readyState===g)&&(t.removeEventListener(_,o),r(e,t))};t.addEventListener(_,o)}}function o(e){e.target.__loaded=!0}function i(e,t){function n(){s==c&&e&&e()}function r(e){o(e),s++,n()}var i=t.querySelectorAll("link[rel=import]"),s=0,c=i.length;if(c)for(var d,l=0;c>l&&(d=i[l]);l++)a(d)?r.call(d,{target:d}):(d.addEventListener("load",r),d.addEventListener("error",r));else n()}function a(e){return u?e.__loaded||e["import"]&&"loading"!==e["import"].readyState:e.__importParsed}function s(e){for(var t,n=0,r=e.length;r>n&&(t=e[n]);n++)c(t)&&d(t)}function c(e){return"link"===e.localName&&"import"===e.rel}function d(e){var t=e["import"];t?o({target:e}):(e.addEventListener("load",o),e.addEventListener("error",o))}var l="import",u=Boolean(l in document.createElement("link")),m=Boolean(window.ShadowDOMPolyfill),p=function(e){return m?ShadowDOMPolyfill.wrapIfNeeded(e):e},h=p(document),f={get:function(){var e=HTMLImports.currentScript||document.currentScript||("complete"!==document.readyState?document.scripts[document.scripts.length-1]:null);return p(e)},configurable:!0};Object.defineProperty(document,"_currentScript",f),Object.defineProperty(h,"_currentScript",f);var 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diff --git a/bower_components/webcomponentsjs/README.md b/bower_components/webcomponentsjs/README.md
new file mode 100644
index 0000000..49ed2b6
--- /dev/null
+++ b/bower_components/webcomponentsjs/README.md
@@ -0,0 +1,73 @@
+webcomponents.js
+================
+
+[![Join the chat at https://gitter.im/webcomponents/webcomponentsjs](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/webcomponents/webcomponentsjs?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+
+A suite of polyfills supporting the [Web Components](http://webcomponents.org) specs:
+
+**Custom Elements**: allows authors to define their own custom tags ([spec](https://w3c.github.io/webcomponents/spec/custom/)).
+
+**HTML Imports**: a way to include and reuse HTML documents via other HTML documents ([spec](https://w3c.github.io/webcomponents/spec/imports/)).
+
+**Shadow DOM**: provides encapsulation by hiding DOM subtrees under shadow roots ([spec](https://w3c.github.io/webcomponents/spec/shadow/)).
+
+This also folds in polyfills for `MutationObserver` and `WeakMap`.
+
+
+## Releases
+
+Pre-built (concatenated & minified) versions of the polyfills are maintained in the [tagged versions](https://github.com/webcomponents/webcomponentsjs/releases) of this repo. There are two variants:
+
+`webcomponents.js` includes all of the polyfills.
+
+`webcomponents-lite.js` includes all polyfills except for shadow DOM.
+
+
+## Browser Support
+
+Our polyfills are intended to work in the latest versions of evergreen browsers. See below
+for our complete browser support matrix:
+
+| Polyfill   | IE10 | IE11+ | Chrome* | Firefox* | Safari 7+* | Chrome Android* | Mobile Safari* |
+| ---------- |:----:|:-----:|:-------:|:--------:|:----------:|:---------------:|:--------------:|
+| Custom Elements | ~ | ✓ | ✓ | ✓ | ✓ | ✓| ✓ |
+| HTML Imports | ~ | ✓ | ✓ | ✓ | ✓| ✓| ✓ |
+| Shadow DOM | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
+| Templates | ✓ | ✓ | ✓ | ✓| ✓ | ✓ | ✓ |
+
+
+*Indicates the current version of the browser
+
+~Indicates support may be flaky. If using Custom Elements or HTML Imports with Shadow DOM,
+you will get the non-flaky Mutation Observer polyfill that Shadow DOM includes.
+
+The polyfills may work in older browsers, however require additional polyfills (such as classList)
+to be used. We cannot guarantee support for browsers outside of our compatibility matrix.
+
+
+### Manually Building
+
+If you wish to build the polyfills yourself, you'll need `node` and `gulp` on your system:
+
+ * install [node.js](http://nodejs.org/) using the instructions on their website
+ * use `npm` to install [gulp.js](http://gulpjs.com/): `npm install -g gulp`
+
+Now you are ready to build the polyfills with:
+
+    # install dependencies
+    npm install
+    # build
+    gulp build
+
+The builds will be placed into the `dist/` directory.
+
+## Contribute
+
+See the [contributing guide](CONTRIBUTING.md)
+
+## License
+
+Everything in this repository is BSD style license unless otherwise specified.
+
+Copyright (c) 2015 The Polymer Authors. All rights reserved.
+
diff --git a/bower_components/webcomponentsjs/ShadowDOM.js b/bower_components/webcomponentsjs/ShadowDOM.js
new file mode 100644
index 0000000..fb5c08f
--- /dev/null
+++ b/bower_components/webcomponentsjs/ShadowDOM.js
@@ -0,0 +1,4277 @@
+/**
+ * @license
+ * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+ * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+ * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+ * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+ * Code distributed by Google as part of the polymer project is also
+ * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+ */
+// @version 0.5.5
+if (typeof WeakMap === "undefined") {
+  (function() {
+    var defineProperty = Object.defineProperty;
+    var counter = Date.now() % 1e9;
+    var WeakMap = function() {
+      this.name = "__st" + (Math.random() * 1e9 >>> 0) + (counter++ + "__");
+    };
+    WeakMap.prototype = {
+      set: function(key, value) {
+        var entry = key[this.name];
+        if (entry && entry[0] === key) entry[1] = value; else defineProperty(key, this.name, {
+          value: [ key, value ],
+          writable: true
+        });
+        return this;
+      },
+      get: function(key) {
+        var entry;
+        return (entry = key[this.name]) && entry[0] === key ? entry[1] : undefined;
+      },
+      "delete": function(key) {
+        var entry = key[this.name];
+        if (!entry || entry[0] !== key) return false;
+        entry[0] = entry[1] = undefined;
+        return true;
+      },
+      has: function(key) {
+        var entry = key[this.name];
+        if (!entry) return false;
+        return entry[0] === key;
+      }
+    };
+    window.WeakMap = WeakMap;
+  })();
+}
+
+window.ShadowDOMPolyfill = {};
+
+(function(scope) {
+  "use strict";
+  var constructorTable = new WeakMap();
+  var nativePrototypeTable = new WeakMap();
+  var wrappers = Object.create(null);
+  function detectEval() {
+    if (typeof chrome !== "undefined" && chrome.app && chrome.app.runtime) {
+      return false;
+    }
+    if (navigator.getDeviceStorage) {
+      return false;
+    }
+    try {
+      var f = new Function("return true;");
+      return f();
+    } catch (ex) {
+      return false;
+    }
+  }
+  var hasEval = detectEval();
+  function assert(b) {
+    if (!b) throw new Error("Assertion failed");
+  }
+  var defineProperty = Object.defineProperty;
+  var getOwnPropertyNames = Object.getOwnPropertyNames;
+  var getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
+  function mixin(to, from) {
+    var names = getOwnPropertyNames(from);
+    for (var i = 0; i < names.length; i++) {
+      var name = names[i];
+      defineProperty(to, name, getOwnPropertyDescriptor(from, name));
+    }
+    return to;
+  }
+  function mixinStatics(to, from) {
+    var names = getOwnPropertyNames(from);
+    for (var i = 0; i < names.length; i++) {
+      var name = names[i];
+      switch (name) {
+       case "arguments":
+       case "caller":
+       case "length":
+       case "name":
+       case "prototype":
+       case "toString":
+        continue;
+      }
+      defineProperty(to, name, getOwnPropertyDescriptor(from, name));
+    }
+    return to;
+  }
+  function oneOf(object, propertyNames) {
+    for (var i = 0; i < propertyNames.length; i++) {
+      if (propertyNames[i] in object) return propertyNames[i];
+    }
+  }
+  var nonEnumerableDataDescriptor = {
+    value: undefined,
+    configurable: true,
+    enumerable: false,
+    writable: true
+  };
+  function defineNonEnumerableDataProperty(object, name, value) {
+    nonEnumerableDataDescriptor.value = value;
+    defineProperty(object, name, nonEnumerableDataDescriptor);
+  }
+  getOwnPropertyNames(window);
+  function getWrapperConstructor(node) {
+    var nativePrototype = node.__proto__ || Object.getPrototypeOf(node);
+    if (isFirefox) {
+      try {
+        getOwnPropertyNames(nativePrototype);
+      } catch (error) {
+        nativePrototype = nativePrototype.__proto__;
+      }
+    }
+    var wrapperConstructor = constructorTable.get(nativePrototype);
+    if (wrapperConstructor) return wrapperConstructor;
+    var parentWrapperConstructor = getWrapperConstructor(nativePrototype);
+    var GeneratedWrapper = createWrapperConstructor(parentWrapperConstructor);
+    registerInternal(nativePrototype, GeneratedWrapper, node);
+    return GeneratedWrapper;
+  }
+  function addForwardingProperties(nativePrototype, wrapperPrototype) {
+    installProperty(nativePrototype, wrapperPrototype, true);
+  }
+  function registerInstanceProperties(wrapperPrototype, instanceObject) {
+    installProperty(instanceObject, wrapperPrototype, false);
+  }
+  var isFirefox = /Firefox/.test(navigator.userAgent);
+  var dummyDescriptor = {
+    get: function() {},
+    set: function(v) {},
+    configurable: true,
+    enumerable: true
+  };
+  function isEventHandlerName(name) {
+    return /^on[a-z]+$/.test(name);
+  }
+  function isIdentifierName(name) {
+    return /^\w[a-zA-Z_0-9]*$/.test(name);
+  }
+  function getGetter(name) {
+    return hasEval && isIdentifierName(name) ? new Function("return this.__impl4cf1e782hg__." + name) : function() {
+      return this.__impl4cf1e782hg__[name];
+    };
+  }
+  function getSetter(name) {
+    return hasEval && isIdentifierName(name) ? new Function("v", "this.__impl4cf1e782hg__." + name + " = v") : function(v) {
+      this.__impl4cf1e782hg__[name] = v;
+    };
+  }
+  function getMethod(name) {
+    return hasEval && isIdentifierName(name) ? new Function("return this.__impl4cf1e782hg__." + name + ".apply(this.__impl4cf1e782hg__, arguments)") : function() {
+      return this.__impl4cf1e782hg__[name].apply(this.__impl4cf1e782hg__, arguments);
+    };
+  }
+  function getDescriptor(source, name) {
+    try {
+      return Object.getOwnPropertyDescriptor(source, name);
+    } catch (ex) {
+      return dummyDescriptor;
+    }
+  }
+  var isBrokenSafari = function() {
+    var descr = Object.getOwnPropertyDescriptor(Node.prototype, "nodeType");
+    return descr && !descr.get && !descr.set;
+  }();
+  function installProperty(source, target, allowMethod, opt_blacklist) {
+    var names = getOwnPropertyNames(source);
+    for (var i = 0; i < names.length; i++) {
+      var name = names[i];
+      if (name === "polymerBlackList_") continue;
+      if (name in target) continue;
+      if (source.polymerBlackList_ && source.polymerBlackList_[name]) continue;
+      if (isFirefox) {
+        source.__lookupGetter__(name);
+      }
+      var descriptor = getDescriptor(source, name);
+      var getter, setter;
+      if (allowMethod && typeof descriptor.value === "function") {
+        target[name] = getMethod(name);
+        continue;
+      }
+      var isEvent = isEventHandlerName(name);
+      if (isEvent) getter = scope.getEventHandlerGetter(name); else getter = getGetter(name);
+      if (descriptor.writable || descriptor.set || isBrokenSafari) {
+        if (isEvent) setter = scope.getEventHandlerSetter(name); else setter = getSetter(name);
+      }
+      var configurable = isBrokenSafari || descriptor.configurable;
+      defineProperty(target, name, {
+        get: getter,
+        set: setter,
+        configurable: configurable,
+        enumerable: descriptor.enumerable
+      });
+    }
+  }
+  function register(nativeConstructor, wrapperConstructor, opt_instance) {
+    var nativePrototype = nativeConstructor.prototype;
+    registerInternal(nativePrototype, wrapperConstructor, opt_instance);
+    mixinStatics(wrapperConstructor, nativeConstructor);
+  }
+  function registerInternal(nativePrototype, wrapperConstructor, opt_instance) {
+    var wrapperPrototype = wrapperConstructor.prototype;
+    assert(constructorTable.get(nativePrototype) === undefined);
+    constructorTable.set(nativePrototype, wrapperConstructor);
+    nativePrototypeTable.set(wrapperPrototype, nativePrototype);
+    addForwardingProperties(nativePrototype, wrapperPrototype);
+    if (opt_instance) registerInstanceProperties(wrapperPrototype, opt_instance);
+    defineNonEnumerableDataProperty(wrapperPrototype, "constructor", wrapperConstructor);
+    wrapperConstructor.prototype = wrapperPrototype;
+  }
+  function isWrapperFor(wrapperConstructor, nativeConstructor) {
+    return constructorTable.get(nativeConstructor.prototype) === wrapperConstructor;
+  }
+  function registerObject(object) {
+    var nativePrototype = Object.getPrototypeOf(object);
+    var superWrapperConstructor = getWrapperConstructor(nativePrototype);
+    var GeneratedWrapper = createWrapperConstructor(superWrapperConstructor);
+    registerInternal(nativePrototype, GeneratedWrapper, object);
+    return GeneratedWrapper;
+  }
+  function createWrapperConstructor(superWrapperConstructor) {
+    function GeneratedWrapper(node) {
+      superWrapperConstructor.call(this, node);
+    }
+    var p = Object.create(superWrapperConstructor.prototype);
+    p.constructor = GeneratedWrapper;
+    GeneratedWrapper.prototype = p;
+    return GeneratedWrapper;
+  }
+  function isWrapper(object) {
+    return object && object.__impl4cf1e782hg__;
+  }
+  function isNative(object) {
+    return !isWrapper(object);
+  }
+  function wrap(impl) {
+    if (impl === null) return null;
+    assert(isNative(impl));
+    return impl.__wrapper8e3dd93a60__ || (impl.__wrapper8e3dd93a60__ = new (getWrapperConstructor(impl))(impl));
+  }
+  function unwrap(wrapper) {
+    if (wrapper === null) return null;
+    assert(isWrapper(wrapper));
+    return wrapper.__impl4cf1e782hg__;
+  }
+  function unsafeUnwrap(wrapper) {
+    return wrapper.__impl4cf1e782hg__;
+  }
+  function setWrapper(impl, wrapper) {
+    wrapper.__impl4cf1e782hg__ = impl;
+    impl.__wrapper8e3dd93a60__ = wrapper;
+  }
+  function unwrapIfNeeded(object) {
+    return object && isWrapper(object) ? unwrap(object) : object;
+  }
+  function wrapIfNeeded(object) {
+    return object && !isWrapper(object) ? wrap(object) : object;
+  }
+  function rewrap(node, wrapper) {
+    if (wrapper === null) return;
+    assert(isNative(node));
+    assert(wrapper === undefined || isWrapper(wrapper));
+    node.__wrapper8e3dd93a60__ = wrapper;
+  }
+  var getterDescriptor = {
+    get: undefined,
+    configurable: true,
+    enumerable: true
+  };
+  function defineGetter(constructor, name, getter) {
+    getterDescriptor.get = getter;
+    defineProperty(constructor.prototype, name, getterDescriptor);
+  }
+  function defineWrapGetter(constructor, name) {
+    defineGetter(constructor, name, function() {
+      return wrap(this.__impl4cf1e782hg__[name]);
+    });
+  }
+  function forwardMethodsToWrapper(constructors, names) {
+    constructors.forEach(function(constructor) {
+      names.forEach(function(name) {
+        constructor.prototype[name] = function() {
+          var w = wrapIfNeeded(this);
+          return w[name].apply(w, arguments);
+        };
+      });
+    });
+  }
+  scope.assert = assert;
+  scope.constructorTable = constructorTable;
+  scope.defineGetter = defineGetter;
+  scope.defineWrapGetter = defineWrapGetter;
+  scope.forwardMethodsToWrapper = forwardMethodsToWrapper;
+  scope.isWrapper = isWrapper;
+  scope.isWrapperFor = isWrapperFor;
+  scope.mixin = mixin;
+  scope.nativePrototypeTable = nativePrototypeTable;
+  scope.oneOf = oneOf;
+  scope.registerObject = registerObject;
+  scope.registerWrapper = register;
+  scope.rewrap = rewrap;
+  scope.setWrapper = setWrapper;
+  scope.unsafeUnwrap = unsafeUnwrap;
+  scope.unwrap = unwrap;
+  scope.unwrapIfNeeded = unwrapIfNeeded;
+  scope.wrap = wrap;
+  scope.wrapIfNeeded = wrapIfNeeded;
+  scope.wrappers = wrappers;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  function newSplice(index, removed, addedCount) {
+    return {
+      index: index,
+      removed: removed,
+      addedCount: addedCount
+    };
+  }
+  var EDIT_LEAVE = 0;
+  var EDIT_UPDATE = 1;
+  var EDIT_ADD = 2;
+  var EDIT_DELETE = 3;
+  function ArraySplice() {}
+  ArraySplice.prototype = {
+    calcEditDistances: function(current, currentStart, currentEnd, old, oldStart, oldEnd) {
+      var rowCount = oldEnd - oldStart + 1;
+      var columnCount = currentEnd - currentStart + 1;
+      var distances = new Array(rowCount);
+      for (var i = 0; i < rowCount; i++) {
+        distances[i] = new Array(columnCount);
+        distances[i][0] = i;
+      }
+      for (var j = 0; j < columnCount; j++) distances[0][j] = j;
+      for (var i = 1; i < rowCount; i++) {
+        for (var j = 1; j < columnCount; j++) {
+          if (this.equals(current[currentStart + j - 1], old[oldStart + i - 1])) distances[i][j] = distances[i - 1][j - 1]; else {
+            var north = distances[i - 1][j] + 1;
+            var west = distances[i][j - 1] + 1;
+            distances[i][j] = north < west ? north : west;
+          }
+        }
+      }
+      return distances;
+    },
+    spliceOperationsFromEditDistances: function(distances) {
+      var i = distances.length - 1;
+      var j = distances[0].length - 1;
+      var current = distances[i][j];
+      var edits = [];
+      while (i > 0 || j > 0) {
+        if (i == 0) {
+          edits.push(EDIT_ADD);
+          j--;
+          continue;
+        }
+        if (j == 0) {
+          edits.push(EDIT_DELETE);
+          i--;
+          continue;
+        }
+        var northWest = distances[i - 1][j - 1];
+        var west = distances[i - 1][j];
+        var north = distances[i][j - 1];
+        var min;
+        if (west < north) min = west < northWest ? west : northWest; else min = north < northWest ? north : northWest;
+        if (min == northWest) {
+          if (northWest == current) {
+            edits.push(EDIT_LEAVE);
+          } else {
+            edits.push(EDIT_UPDATE);
+            current = northWest;
+          }
+          i--;
+          j--;
+        } else if (min == west) {
+          edits.push(EDIT_DELETE);
+          i--;
+          current = west;
+        } else {
+          edits.push(EDIT_ADD);
+          j--;
+          current = north;
+        }
+      }
+      edits.reverse();
+      return edits;
+    },
+    calcSplices: function(current, currentStart, currentEnd, old, oldStart, oldEnd) {
+      var prefixCount = 0;
+      var suffixCount = 0;
+      var minLength = Math.min(currentEnd - currentStart, oldEnd - oldStart);
+      if (currentStart == 0 && oldStart == 0) prefixCount = this.sharedPrefix(current, old, minLength);
+      if (currentEnd == current.length && oldEnd == old.length) suffixCount = this.sharedSuffix(current, old, minLength - prefixCount);
+      currentStart += prefixCount;
+      oldStart += prefixCount;
+      currentEnd -= suffixCount;
+      oldEnd -= suffixCount;
+      if (currentEnd - currentStart == 0 && oldEnd - oldStart == 0) return [];
+      if (currentStart == currentEnd) {
+        var splice = newSplice(currentStart, [], 0);
+        while (oldStart < oldEnd) splice.removed.push(old[oldStart++]);
+        return [ splice ];
+      } else if (oldStart == oldEnd) return [ newSplice(currentStart, [], currentEnd - currentStart) ];
+      var ops = this.spliceOperationsFromEditDistances(this.calcEditDistances(current, currentStart, currentEnd, old, oldStart, oldEnd));
+      var splice = undefined;
+      var splices = [];
+      var index = currentStart;
+      var oldIndex = oldStart;
+      for (var i = 0; i < ops.length; i++) {
+        switch (ops[i]) {
+         case EDIT_LEAVE:
+          if (splice) {
+            splices.push(splice);
+            splice = undefined;
+          }
+          index++;
+          oldIndex++;
+          break;
+
+         case EDIT_UPDATE:
+          if (!splice) splice = newSplice(index, [], 0);
+          splice.addedCount++;
+          index++;
+          splice.removed.push(old[oldIndex]);
+          oldIndex++;
+          break;
+
+         case EDIT_ADD:
+          if (!splice) splice = newSplice(index, [], 0);
+          splice.addedCount++;
+          index++;
+          break;
+
+         case EDIT_DELETE:
+          if (!splice) splice = newSplice(index, [], 0);
+          splice.removed.push(old[oldIndex]);
+          oldIndex++;
+          break;
+        }
+      }
+      if (splice) {
+        splices.push(splice);
+      }
+      return splices;
+    },
+    sharedPrefix: function(current, old, searchLength) {
+      for (var i = 0; i < searchLength; i++) if (!this.equals(current[i], old[i])) return i;
+      return searchLength;
+    },
+    sharedSuffix: function(current, old, searchLength) {
+      var index1 = current.length;
+      var index2 = old.length;
+      var count = 0;
+      while (count < searchLength && this.equals(current[--index1], old[--index2])) count++;
+      return count;
+    },
+    calculateSplices: function(current, previous) {
+      return this.calcSplices(current, 0, current.length, previous, 0, previous.length);
+    },
+    equals: function(currentValue, previousValue) {
+      return currentValue === previousValue;
+    }
+  };
+  scope.ArraySplice = ArraySplice;
+})(window.ShadowDOMPolyfill);
+
+(function(context) {
+  "use strict";
+  var OriginalMutationObserver = window.MutationObserver;
+  var callbacks = [];
+  var pending = false;
+  var timerFunc;
+  function handle() {
+    pending = false;
+    var copies = callbacks.slice(0);
+    callbacks = [];
+    for (var i = 0; i < copies.length; i++) {
+      (0, copies[i])();
+    }
+  }
+  if (OriginalMutationObserver) {
+    var counter = 1;
+    var observer = new OriginalMutationObserver(handle);
+    var textNode = document.createTextNode(counter);
+    observer.observe(textNode, {
+      characterData: true
+    });
+    timerFunc = function() {
+      counter = (counter + 1) % 2;
+      textNode.data = counter;
+    };
+  } else {
+    timerFunc = window.setTimeout;
+  }
+  function setEndOfMicrotask(func) {
+    callbacks.push(func);
+    if (pending) return;
+    pending = true;
+    timerFunc(handle, 0);
+  }
+  context.setEndOfMicrotask = setEndOfMicrotask;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var setEndOfMicrotask = scope.setEndOfMicrotask;
+  var wrapIfNeeded = scope.wrapIfNeeded;
+  var wrappers = scope.wrappers;
+  var registrationsTable = new WeakMap();
+  var globalMutationObservers = [];
+  var isScheduled = false;
+  function scheduleCallback(observer) {
+    if (observer.scheduled_) return;
+    observer.scheduled_ = true;
+    globalMutationObservers.push(observer);
+    if (isScheduled) return;
+    setEndOfMicrotask(notifyObservers);
+    isScheduled = true;
+  }
+  function notifyObservers() {
+    isScheduled = false;
+    while (globalMutationObservers.length) {
+      var notifyList = globalMutationObservers;
+      globalMutationObservers = [];
+      notifyList.sort(function(x, y) {
+        return x.uid_ - y.uid_;
+      });
+      for (var i = 0; i < notifyList.length; i++) {
+        var mo = notifyList[i];
+        mo.scheduled_ = false;
+        var queue = mo.takeRecords();
+        removeTransientObserversFor(mo);
+        if (queue.length) {
+          mo.callback_(queue, mo);
+        }
+      }
+    }
+  }
+  function MutationRecord(type, target) {
+    this.type = type;
+    this.target = target;
+    this.addedNodes = new wrappers.NodeList();
+    this.removedNodes = new wrappers.NodeList();
+    this.previousSibling = null;
+    this.nextSibling = null;
+    this.attributeName = null;
+    this.attributeNamespace = null;
+    this.oldValue = null;
+  }
+  function registerTransientObservers(ancestor, node) {
+    for (;ancestor; ancestor = ancestor.parentNode) {
+      var registrations = registrationsTable.get(ancestor);
+      if (!registrations) continue;
+      for (var i = 0; i < registrations.length; i++) {
+        var registration = registrations[i];
+        if (registration.options.subtree) registration.addTransientObserver(node);
+      }
+    }
+  }
+  function removeTransientObserversFor(observer) {
+    for (var i = 0; i < observer.nodes_.length; i++) {
+      var node = observer.nodes_[i];
+      var registrations = registrationsTable.get(node);
+      if (!registrations) return;
+      for (var j = 0; j < registrations.length; j++) {
+        var registration = registrations[j];
+        if (registration.observer === observer) registration.removeTransientObservers();
+      }
+    }
+  }
+  function enqueueMutation(target, type, data) {
+    var interestedObservers = Object.create(null);
+    var associatedStrings = Object.create(null);
+    for (var node = target; node; node = node.parentNode) {
+      var registrations = registrationsTable.get(node);
+      if (!registrations) continue;
+      for (var j = 0; j < registrations.length; j++) {
+        var registration = registrations[j];
+        var options = registration.options;
+        if (node !== target && !options.subtree) continue;
+        if (type === "attributes" && !options.attributes) continue;
+        if (type === "attributes" && options.attributeFilter && (data.namespace !== null || options.attributeFilter.indexOf(data.name) === -1)) {
+          continue;
+        }
+        if (type === "characterData" && !options.characterData) continue;
+        if (type === "childList" && !options.childList) continue;
+        var observer = registration.observer;
+        interestedObservers[observer.uid_] = observer;
+        if (type === "attributes" && options.attributeOldValue || type === "characterData" && options.characterDataOldValue) {
+          associatedStrings[observer.uid_] = data.oldValue;
+        }
+      }
+    }
+    for (var uid in interestedObservers) {
+      var observer = interestedObservers[uid];
+      var record = new MutationRecord(type, target);
+      if ("name" in data && "namespace" in data) {
+        record.attributeName = data.name;
+        record.attributeNamespace = data.namespace;
+      }
+      if (data.addedNodes) record.addedNodes = data.addedNodes;
+      if (data.removedNodes) record.removedNodes = data.removedNodes;
+      if (data.previousSibling) record.previousSibling = data.previousSibling;
+      if (data.nextSibling) record.nextSibling = data.nextSibling;
+      if (associatedStrings[uid] !== undefined) record.oldValue = associatedStrings[uid];
+      scheduleCallback(observer);
+      observer.records_.push(record);
+    }
+  }
+  var slice = Array.prototype.slice;
+  function MutationObserverOptions(options) {
+    this.childList = !!options.childList;
+    this.subtree = !!options.subtree;
+    if (!("attributes" in options) && ("attributeOldValue" in options || "attributeFilter" in options)) {
+      this.attributes = true;
+    } else {
+      this.attributes = !!options.attributes;
+    }
+    if ("characterDataOldValue" in options && !("characterData" in options)) this.characterData = true; else this.characterData = !!options.characterData;
+    if (!this.attributes && (options.attributeOldValue || "attributeFilter" in options) || !this.characterData && options.characterDataOldValue) {
+      throw new TypeError();
+    }
+    this.characterData = !!options.characterData;
+    this.attributeOldValue = !!options.attributeOldValue;
+    this.characterDataOldValue = !!options.characterDataOldValue;
+    if ("attributeFilter" in options) {
+      if (options.attributeFilter == null || typeof options.attributeFilter !== "object") {
+        throw new TypeError();
+      }
+      this.attributeFilter = slice.call(options.attributeFilter);
+    } else {
+      this.attributeFilter = null;
+    }
+  }
+  var uidCounter = 0;
+  function MutationObserver(callback) {
+    this.callback_ = callback;
+    this.nodes_ = [];
+    this.records_ = [];
+    this.uid_ = ++uidCounter;
+    this.scheduled_ = false;
+  }
+  MutationObserver.prototype = {
+    constructor: MutationObserver,
+    observe: function(target, options) {
+      target = wrapIfNeeded(target);
+      var newOptions = new MutationObserverOptions(options);
+      var registration;
+      var registrations = registrationsTable.get(target);
+      if (!registrations) registrationsTable.set(target, registrations = []);
+      for (var i = 0; i < registrations.length; i++) {
+        if (registrations[i].observer === this) {
+          registration = registrations[i];
+          registration.removeTransientObservers();
+          registration.options = newOptions;
+        }
+      }
+      if (!registration) {
+        registration = new Registration(this, target, newOptions);
+        registrations.push(registration);
+        this.nodes_.push(target);
+      }
+    },
+    disconnect: function() {
+      this.nodes_.forEach(function(node) {
+        var registrations = registrationsTable.get(node);
+        for (var i = 0; i < registrations.length; i++) {
+          var registration = registrations[i];
+          if (registration.observer === this) {
+            registrations.splice(i, 1);
+            break;
+          }
+        }
+      }, this);
+      this.records_ = [];
+    },
+    takeRecords: function() {
+      var copyOfRecords = this.records_;
+      this.records_ = [];
+      return copyOfRecords;
+    }
+  };
+  function Registration(observer, target, options) {
+    this.observer = observer;
+    this.target = target;
+    this.options = options;
+    this.transientObservedNodes = [];
+  }
+  Registration.prototype = {
+    addTransientObserver: function(node) {
+      if (node === this.target) return;
+      scheduleCallback(this.observer);
+      this.transientObservedNodes.push(node);
+      var registrations = registrationsTable.get(node);
+      if (!registrations) registrationsTable.set(node, registrations = []);
+      registrations.push(this);
+    },
+    removeTransientObservers: function() {
+      var transientObservedNodes = this.transientObservedNodes;
+      this.transientObservedNodes = [];
+      for (var i = 0; i < transientObservedNodes.length; i++) {
+        var node = transientObservedNodes[i];
+        var registrations = registrationsTable.get(node);
+        for (var j = 0; j < registrations.length; j++) {
+          if (registrations[j] === this) {
+            registrations.splice(j, 1);
+            break;
+          }
+        }
+      }
+    }
+  };
+  scope.enqueueMutation = enqueueMutation;
+  scope.registerTransientObservers = registerTransientObservers;
+  scope.wrappers.MutationObserver = MutationObserver;
+  scope.wrappers.MutationRecord = MutationRecord;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  function TreeScope(root, parent) {
+    this.root = root;
+    this.parent = parent;
+  }
+  TreeScope.prototype = {
+    get renderer() {
+      if (this.root instanceof scope.wrappers.ShadowRoot) {
+        return scope.getRendererForHost(this.root.host);
+      }
+      return null;
+    },
+    contains: function(treeScope) {
+      for (;treeScope; treeScope = treeScope.parent) {
+        if (treeScope === this) return true;
+      }
+      return false;
+    }
+  };
+  function setTreeScope(node, treeScope) {
+    if (node.treeScope_ !== treeScope) {
+      node.treeScope_ = treeScope;
+      for (var sr = node.shadowRoot; sr; sr = sr.olderShadowRoot) {
+        sr.treeScope_.parent = treeScope;
+      }
+      for (var child = node.firstChild; child; child = child.nextSibling) {
+        setTreeScope(child, treeScope);
+      }
+    }
+  }
+  function getTreeScope(node) {
+    if (node instanceof scope.wrappers.Window) {
+      debugger;
+    }
+    if (node.treeScope_) return node.treeScope_;
+    var parent = node.parentNode;
+    var treeScope;
+    if (parent) treeScope = getTreeScope(parent); else treeScope = new TreeScope(node, null);
+    return node.treeScope_ = treeScope;
+  }
+  scope.TreeScope = TreeScope;
+  scope.getTreeScope = getTreeScope;
+  scope.setTreeScope = setTreeScope;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var forwardMethodsToWrapper = scope.forwardMethodsToWrapper;
+  var getTreeScope = scope.getTreeScope;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var setWrapper = scope.setWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var wrappers = scope.wrappers;
+  var wrappedFuns = new WeakMap();
+  var listenersTable = new WeakMap();
+  var handledEventsTable = new WeakMap();
+  var currentlyDispatchingEvents = new WeakMap();
+  var targetTable = new WeakMap();
+  var currentTargetTable = new WeakMap();
+  var relatedTargetTable = new WeakMap();
+  var eventPhaseTable = new WeakMap();
+  var stopPropagationTable = new WeakMap();
+  var stopImmediatePropagationTable = new WeakMap();
+  var eventHandlersTable = new WeakMap();
+  var eventPathTable = new WeakMap();
+  function isShadowRoot(node) {
+    return node instanceof wrappers.ShadowRoot;
+  }
+  function rootOfNode(node) {
+    return getTreeScope(node).root;
+  }
+  function getEventPath(node, event) {
+    var path = [];
+    var current = node;
+    path.push(current);
+    while (current) {
+      var destinationInsertionPoints = getDestinationInsertionPoints(current);
+      if (destinationInsertionPoints && destinationInsertionPoints.length > 0) {
+        for (var i = 0; i < destinationInsertionPoints.length; i++) {
+          var insertionPoint = destinationInsertionPoints[i];
+          if (isShadowInsertionPoint(insertionPoint)) {
+            var shadowRoot = rootOfNode(insertionPoint);
+            var olderShadowRoot = shadowRoot.olderShadowRoot;
+            if (olderShadowRoot) path.push(olderShadowRoot);
+          }
+          path.push(insertionPoint);
+        }
+        current = destinationInsertionPoints[destinationInsertionPoints.length - 1];
+      } else {
+        if (isShadowRoot(current)) {
+          if (inSameTree(node, current) && eventMustBeStopped(event)) {
+            break;
+          }
+          current = current.host;
+          path.push(current);
+        } else {
+          current = current.parentNode;
+          if (current) path.push(current);
+        }
+      }
+    }
+    return path;
+  }
+  function eventMustBeStopped(event) {
+    if (!event) return false;
+    switch (event.type) {
+     case "abort":
+     case "error":
+     case "select":
+     case "change":
+     case "load":
+     case "reset":
+     case "resize":
+     case "scroll":
+     case "selectstart":
+      return true;
+    }
+    return false;
+  }
+  function isShadowInsertionPoint(node) {
+    return node instanceof HTMLShadowElement;
+  }
+  function getDestinationInsertionPoints(node) {
+    return scope.getDestinationInsertionPoints(node);
+  }
+  function eventRetargetting(path, currentTarget) {
+    if (path.length === 0) return currentTarget;
+    if (currentTarget instanceof wrappers.Window) currentTarget = currentTarget.document;
+    var currentTargetTree = getTreeScope(currentTarget);
+    var originalTarget = path[0];
+    var originalTargetTree = getTreeScope(originalTarget);
+    var relativeTargetTree = lowestCommonInclusiveAncestor(currentTargetTree, originalTargetTree);
+    for (var i = 0; i < path.length; i++) {
+      var node = path[i];
+      if (getTreeScope(node) === relativeTargetTree) return node;
+    }
+    return path[path.length - 1];
+  }
+  function getTreeScopeAncestors(treeScope) {
+    var ancestors = [];
+    for (;treeScope; treeScope = treeScope.parent) {
+      ancestors.push(treeScope);
+    }
+    return ancestors;
+  }
+  function lowestCommonInclusiveAncestor(tsA, tsB) {
+    var ancestorsA = getTreeScopeAncestors(tsA);
+    var ancestorsB = getTreeScopeAncestors(tsB);
+    var result = null;
+    while (ancestorsA.length > 0 && ancestorsB.length > 0) {
+      var a = ancestorsA.pop();
+      var b = ancestorsB.pop();
+      if (a === b) result = a; else break;
+    }
+    return result;
+  }
+  function getTreeScopeRoot(ts) {
+    if (!ts.parent) return ts;
+    return getTreeScopeRoot(ts.parent);
+  }
+  function relatedTargetResolution(event, currentTarget, relatedTarget) {
+    if (currentTarget instanceof wrappers.Window) currentTarget = currentTarget.document;
+    var currentTargetTree = getTreeScope(currentTarget);
+    var relatedTargetTree = getTreeScope(relatedTarget);
+    var relatedTargetEventPath = getEventPath(relatedTarget, event);
+    var lowestCommonAncestorTree;
+    var lowestCommonAncestorTree = lowestCommonInclusiveAncestor(currentTargetTree, relatedTargetTree);
+    if (!lowestCommonAncestorTree) lowestCommonAncestorTree = relatedTargetTree.root;
+    for (var commonAncestorTree = lowestCommonAncestorTree; commonAncestorTree; commonAncestorTree = commonAncestorTree.parent) {
+      var adjustedRelatedTarget;
+      for (var i = 0; i < relatedTargetEventPath.length; i++) {
+        var node = relatedTargetEventPath[i];
+        if (getTreeScope(node) === commonAncestorTree) return node;
+      }
+    }
+    return null;
+  }
+  function inSameTree(a, b) {
+    return getTreeScope(a) === getTreeScope(b);
+  }
+  var NONE = 0;
+  var CAPTURING_PHASE = 1;
+  var AT_TARGET = 2;
+  var BUBBLING_PHASE = 3;
+  var pendingError;
+  function dispatchOriginalEvent(originalEvent) {
+    if (handledEventsTable.get(originalEvent)) return;
+    handledEventsTable.set(originalEvent, true);
+    dispatchEvent(wrap(originalEvent), wrap(originalEvent.target));
+    if (pendingError) {
+      var err = pendingError;
+      pendingError = null;
+      throw err;
+    }
+  }
+  function isLoadLikeEvent(event) {
+    switch (event.type) {
+     case "load":
+     case "beforeunload":
+     case "unload":
+      return true;
+    }
+    return false;
+  }
+  function dispatchEvent(event, originalWrapperTarget) {
+    if (currentlyDispatchingEvents.get(event)) throw new Error("InvalidStateError");
+    currentlyDispatchingEvents.set(event, true);
+    scope.renderAllPending();
+    var eventPath;
+    var overrideTarget;
+    var win;
+    if (isLoadLikeEvent(event) && !event.bubbles) {
+      var doc = originalWrapperTarget;
+      if (doc instanceof wrappers.Document && (win = doc.defaultView)) {
+        overrideTarget = doc;
+        eventPath = [];
+      }
+    }
+    if (!eventPath) {
+      if (originalWrapperTarget instanceof wrappers.Window) {
+        win = originalWrapperTarget;
+        eventPath = [];
+      } else {
+        eventPath = getEventPath(originalWrapperTarget, event);
+        if (!isLoadLikeEvent(event)) {
+          var doc = eventPath[eventPath.length - 1];
+          if (doc instanceof wrappers.Document) win = doc.defaultView;
+        }
+      }
+    }
+    eventPathTable.set(event, eventPath);
+    if (dispatchCapturing(event, eventPath, win, overrideTarget)) {
+      if (dispatchAtTarget(event, eventPath, win, overrideTarget)) {
+        dispatchBubbling(event, eventPath, win, overrideTarget);
+      }
+    }
+    eventPhaseTable.set(event, NONE);
+    currentTargetTable.delete(event, null);
+    currentlyDispatchingEvents.delete(event);
+    return event.defaultPrevented;
+  }
+  function dispatchCapturing(event, eventPath, win, overrideTarget) {
+    var phase = CAPTURING_PHASE;
+    if (win) {
+      if (!invoke(win, event, phase, eventPath, overrideTarget)) return false;
+    }
+    for (var i = eventPath.length - 1; i > 0; i--) {
+      if (!invoke(eventPath[i], event, phase, eventPath, overrideTarget)) return false;
+    }
+    return true;
+  }
+  function dispatchAtTarget(event, eventPath, win, overrideTarget) {
+    var phase = AT_TARGET;
+    var currentTarget = eventPath[0] || win;
+    return invoke(currentTarget, event, phase, eventPath, overrideTarget);
+  }
+  function dispatchBubbling(event, eventPath, win, overrideTarget) {
+    var phase = BUBBLING_PHASE;
+    for (var i = 1; i < eventPath.length; i++) {
+      if (!invoke(eventPath[i], event, phase, eventPath, overrideTarget)) return;
+    }
+    if (win && eventPath.length > 0) {
+      invoke(win, event, phase, eventPath, overrideTarget);
+    }
+  }
+  function invoke(currentTarget, event, phase, eventPath, overrideTarget) {
+    var listeners = listenersTable.get(currentTarget);
+    if (!listeners) return true;
+    var target = overrideTarget || eventRetargetting(eventPath, currentTarget);
+    if (target === currentTarget) {
+      if (phase === CAPTURING_PHASE) return true;
+      if (phase === BUBBLING_PHASE) phase = AT_TARGET;
+    } else if (phase === BUBBLING_PHASE && !event.bubbles) {
+      return true;
+    }
+    if ("relatedTarget" in event) {
+      var originalEvent = unwrap(event);
+      var unwrappedRelatedTarget = originalEvent.relatedTarget;
+      if (unwrappedRelatedTarget) {
+        if (unwrappedRelatedTarget instanceof Object && unwrappedRelatedTarget.addEventListener) {
+          var relatedTarget = wrap(unwrappedRelatedTarget);
+          var adjusted = relatedTargetResolution(event, currentTarget, relatedTarget);
+          if (adjusted === target) return true;
+        } else {
+          adjusted = null;
+        }
+        relatedTargetTable.set(event, adjusted);
+      }
+    }
+    eventPhaseTable.set(event, phase);
+    var type = event.type;
+    var anyRemoved = false;
+    targetTable.set(event, target);
+    currentTargetTable.set(event, currentTarget);
+    listeners.depth++;
+    for (var i = 0, len = listeners.length; i < len; i++) {
+      var listener = listeners[i];
+      if (listener.removed) {
+        anyRemoved = true;
+        continue;
+      }
+      if (listener.type !== type || !listener.capture && phase === CAPTURING_PHASE || listener.capture && phase === BUBBLING_PHASE) {
+        continue;
+      }
+      try {
+        if (typeof listener.handler === "function") listener.handler.call(currentTarget, event); else listener.handler.handleEvent(event);
+        if (stopImmediatePropagationTable.get(event)) return false;
+      } catch (ex) {
+        if (!pendingError) pendingError = ex;
+      }
+    }
+    listeners.depth--;
+    if (anyRemoved && listeners.depth === 0) {
+      var copy = listeners.slice();
+      listeners.length = 0;
+      for (var i = 0; i < copy.length; i++) {
+        if (!copy[i].removed) listeners.push(copy[i]);
+      }
+    }
+    return !stopPropagationTable.get(event);
+  }
+  function Listener(type, handler, capture) {
+    this.type = type;
+    this.handler = handler;
+    this.capture = Boolean(capture);
+  }
+  Listener.prototype = {
+    equals: function(that) {
+      return this.handler === that.handler && this.type === that.type && this.capture === that.capture;
+    },
+    get removed() {
+      return this.handler === null;
+    },
+    remove: function() {
+      this.handler = null;
+    }
+  };
+  var OriginalEvent = window.Event;
+  OriginalEvent.prototype.polymerBlackList_ = {
+    returnValue: true,
+    keyLocation: true
+  };
+  function Event(type, options) {
+    if (type instanceof OriginalEvent) {
+      var impl = type;
+      if (!OriginalBeforeUnloadEvent && impl.type === "beforeunload" && !(this instanceof BeforeUnloadEvent)) {
+        return new BeforeUnloadEvent(impl);
+      }
+      setWrapper(impl, this);
+    } else {
+      return wrap(constructEvent(OriginalEvent, "Event", type, options));
+    }
+  }
+  Event.prototype = {
+    get target() {
+      return targetTable.get(this);
+    },
+    get currentTarget() {
+      return currentTargetTable.get(this);
+    },
+    get eventPhase() {
+      return eventPhaseTable.get(this);
+    },
+    get path() {
+      var eventPath = eventPathTable.get(this);
+      if (!eventPath) return [];
+      return eventPath.slice();
+    },
+    stopPropagation: function() {
+      stopPropagationTable.set(this, true);
+    },
+    stopImmediatePropagation: function() {
+      stopPropagationTable.set(this, true);
+      stopImmediatePropagationTable.set(this, true);
+    }
+  };
+  registerWrapper(OriginalEvent, Event, document.createEvent("Event"));
+  function unwrapOptions(options) {
+    if (!options || !options.relatedTarget) return options;
+    return Object.create(options, {
+      relatedTarget: {
+        value: unwrap(options.relatedTarget)
+      }
+    });
+  }
+  function registerGenericEvent(name, SuperEvent, prototype) {
+    var OriginalEvent = window[name];
+    var GenericEvent = function(type, options) {
+      if (type instanceof OriginalEvent) setWrapper(type, this); else return wrap(constructEvent(OriginalEvent, name, type, options));
+    };
+    GenericEvent.prototype = Object.create(SuperEvent.prototype);
+    if (prototype) mixin(GenericEvent.prototype, prototype);
+    if (OriginalEvent) {
+      try {
+        registerWrapper(OriginalEvent, GenericEvent, new OriginalEvent("temp"));
+      } catch (ex) {
+        registerWrapper(OriginalEvent, GenericEvent, document.createEvent(name));
+      }
+    }
+    return GenericEvent;
+  }
+  var UIEvent = registerGenericEvent("UIEvent", Event);
+  var CustomEvent = registerGenericEvent("CustomEvent", Event);
+  var relatedTargetProto = {
+    get relatedTarget() {
+      var relatedTarget = relatedTargetTable.get(this);
+      if (relatedTarget !== undefined) return relatedTarget;
+      return wrap(unwrap(this).relatedTarget);
+    }
+  };
+  function getInitFunction(name, relatedTargetIndex) {
+    return function() {
+      arguments[relatedTargetIndex] = unwrap(arguments[relatedTargetIndex]);
+      var impl = unwrap(this);
+      impl[name].apply(impl, arguments);
+    };
+  }
+  var mouseEventProto = mixin({
+    initMouseEvent: getInitFunction("initMouseEvent", 14)
+  }, relatedTargetProto);
+  var focusEventProto = mixin({
+    initFocusEvent: getInitFunction("initFocusEvent", 5)
+  }, relatedTargetProto);
+  var MouseEvent = registerGenericEvent("MouseEvent", UIEvent, mouseEventProto);
+  var FocusEvent = registerGenericEvent("FocusEvent", UIEvent, focusEventProto);
+  var defaultInitDicts = Object.create(null);
+  var supportsEventConstructors = function() {
+    try {
+      new window.FocusEvent("focus");
+    } catch (ex) {
+      return false;
+    }
+    return true;
+  }();
+  function constructEvent(OriginalEvent, name, type, options) {
+    if (supportsEventConstructors) return new OriginalEvent(type, unwrapOptions(options));
+    var event = unwrap(document.createEvent(name));
+    var defaultDict = defaultInitDicts[name];
+    var args = [ type ];
+    Object.keys(defaultDict).forEach(function(key) {
+      var v = options != null && key in options ? options[key] : defaultDict[key];
+      if (key === "relatedTarget") v = unwrap(v);
+      args.push(v);
+    });
+    event["init" + name].apply(event, args);
+    return event;
+  }
+  if (!supportsEventConstructors) {
+    var configureEventConstructor = function(name, initDict, superName) {
+      if (superName) {
+        var superDict = defaultInitDicts[superName];
+        initDict = mixin(mixin({}, superDict), initDict);
+      }
+      defaultInitDicts[name] = initDict;
+    };
+    configureEventConstructor("Event", {
+      bubbles: false,
+      cancelable: false
+    });
+    configureEventConstructor("CustomEvent", {
+      detail: null
+    }, "Event");
+    configureEventConstructor("UIEvent", {
+      view: null,
+      detail: 0
+    }, "Event");
+    configureEventConstructor("MouseEvent", {
+      screenX: 0,
+      screenY: 0,
+      clientX: 0,
+      clientY: 0,
+      ctrlKey: false,
+      altKey: false,
+      shiftKey: false,
+      metaKey: false,
+      button: 0,
+      relatedTarget: null
+    }, "UIEvent");
+    configureEventConstructor("FocusEvent", {
+      relatedTarget: null
+    }, "UIEvent");
+  }
+  var OriginalBeforeUnloadEvent = window.BeforeUnloadEvent;
+  function BeforeUnloadEvent(impl) {
+    Event.call(this, impl);
+  }
+  BeforeUnloadEvent.prototype = Object.create(Event.prototype);
+  mixin(BeforeUnloadEvent.prototype, {
+    get returnValue() {
+      return unsafeUnwrap(this).returnValue;
+    },
+    set returnValue(v) {
+      unsafeUnwrap(this).returnValue = v;
+    }
+  });
+  if (OriginalBeforeUnloadEvent) registerWrapper(OriginalBeforeUnloadEvent, BeforeUnloadEvent);
+  function isValidListener(fun) {
+    if (typeof fun === "function") return true;
+    return fun && fun.handleEvent;
+  }
+  function isMutationEvent(type) {
+    switch (type) {
+     case "DOMAttrModified":
+     case "DOMAttributeNameChanged":
+     case "DOMCharacterDataModified":
+     case "DOMElementNameChanged":
+     case "DOMNodeInserted":
+     case "DOMNodeInsertedIntoDocument":
+     case "DOMNodeRemoved":
+     case "DOMNodeRemovedFromDocument":
+     case "DOMSubtreeModified":
+      return true;
+    }
+    return false;
+  }
+  var OriginalEventTarget = window.EventTarget;
+  function EventTarget(impl) {
+    setWrapper(impl, this);
+  }
+  var methodNames = [ "addEventListener", "removeEventListener", "dispatchEvent" ];
+  [ Node, Window ].forEach(function(constructor) {
+    var p = constructor.prototype;
+    methodNames.forEach(function(name) {
+      Object.defineProperty(p, name + "_", {
+        value: p[name]
+      });
+    });
+  });
+  function getTargetToListenAt(wrapper) {
+    if (wrapper instanceof wrappers.ShadowRoot) wrapper = wrapper.host;
+    return unwrap(wrapper);
+  }
+  EventTarget.prototype = {
+    addEventListener: function(type, fun, capture) {
+      if (!isValidListener(fun) || isMutationEvent(type)) return;
+      var listener = new Listener(type, fun, capture);
+      var listeners = listenersTable.get(this);
+      if (!listeners) {
+        listeners = [];
+        listeners.depth = 0;
+        listenersTable.set(this, listeners);
+      } else {
+        for (var i = 0; i < listeners.length; i++) {
+          if (listener.equals(listeners[i])) return;
+        }
+      }
+      listeners.push(listener);
+      var target = getTargetToListenAt(this);
+      target.addEventListener_(type, dispatchOriginalEvent, true);
+    },
+    removeEventListener: function(type, fun, capture) {
+      capture = Boolean(capture);
+      var listeners = listenersTable.get(this);
+      if (!listeners) return;
+      var count = 0, found = false;
+      for (var i = 0; i < listeners.length; i++) {
+        if (listeners[i].type === type && listeners[i].capture === capture) {
+          count++;
+          if (listeners[i].handler === fun) {
+            found = true;
+            listeners[i].remove();
+          }
+        }
+      }
+      if (found && count === 1) {
+        var target = getTargetToListenAt(this);
+        target.removeEventListener_(type, dispatchOriginalEvent, true);
+      }
+    },
+    dispatchEvent: function(event) {
+      var nativeEvent = unwrap(event);
+      var eventType = nativeEvent.type;
+      handledEventsTable.set(nativeEvent, false);
+      scope.renderAllPending();
+      var tempListener;
+      if (!hasListenerInAncestors(this, eventType)) {
+        tempListener = function() {};
+        this.addEventListener(eventType, tempListener, true);
+      }
+      try {
+        return unwrap(this).dispatchEvent_(nativeEvent);
+      } finally {
+        if (tempListener) this.removeEventListener(eventType, tempListener, true);
+      }
+    }
+  };
+  function hasListener(node, type) {
+    var listeners = listenersTable.get(node);
+    if (listeners) {
+      for (var i = 0; i < listeners.length; i++) {
+        if (!listeners[i].removed && listeners[i].type === type) return true;
+      }
+    }
+    return false;
+  }
+  function hasListenerInAncestors(target, type) {
+    for (var node = unwrap(target); node; node = node.parentNode) {
+      if (hasListener(wrap(node), type)) return true;
+    }
+    return false;
+  }
+  if (OriginalEventTarget) registerWrapper(OriginalEventTarget, EventTarget);
+  function wrapEventTargetMethods(constructors) {
+    forwardMethodsToWrapper(constructors, methodNames);
+  }
+  var originalElementFromPoint = document.elementFromPoint;
+  function elementFromPoint(self, document, x, y) {
+    scope.renderAllPending();
+    var element = wrap(originalElementFromPoint.call(unsafeUnwrap(document), x, y));
+    if (!element) return null;
+    var path = getEventPath(element, null);
+    var idx = path.lastIndexOf(self);
+    if (idx == -1) return null; else path = path.slice(0, idx);
+    return eventRetargetting(path, self);
+  }
+  function getEventHandlerGetter(name) {
+    return function() {
+      var inlineEventHandlers = eventHandlersTable.get(this);
+      return inlineEventHandlers && inlineEventHandlers[name] && inlineEventHandlers[name].value || null;
+    };
+  }
+  function getEventHandlerSetter(name) {
+    var eventType = name.slice(2);
+    return function(value) {
+      var inlineEventHandlers = eventHandlersTable.get(this);
+      if (!inlineEventHandlers) {
+        inlineEventHandlers = Object.create(null);
+        eventHandlersTable.set(this, inlineEventHandlers);
+      }
+      var old = inlineEventHandlers[name];
+      if (old) this.removeEventListener(eventType, old.wrapped, false);
+      if (typeof value === "function") {
+        var wrapped = function(e) {
+          var rv = value.call(this, e);
+          if (rv === false) e.preventDefault(); else if (name === "onbeforeunload" && typeof rv === "string") e.returnValue = rv;
+        };
+        this.addEventListener(eventType, wrapped, false);
+        inlineEventHandlers[name] = {
+          value: value,
+          wrapped: wrapped
+        };
+      }
+    };
+  }
+  scope.elementFromPoint = elementFromPoint;
+  scope.getEventHandlerGetter = getEventHandlerGetter;
+  scope.getEventHandlerSetter = getEventHandlerSetter;
+  scope.wrapEventTargetMethods = wrapEventTargetMethods;
+  scope.wrappers.BeforeUnloadEvent = BeforeUnloadEvent;
+  scope.wrappers.CustomEvent = CustomEvent;
+  scope.wrappers.Event = Event;
+  scope.wrappers.EventTarget = EventTarget;
+  scope.wrappers.FocusEvent = FocusEvent;
+  scope.wrappers.MouseEvent = MouseEvent;
+  scope.wrappers.UIEvent = UIEvent;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var UIEvent = scope.wrappers.UIEvent;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var setWrapper = scope.setWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var wrap = scope.wrap;
+  var OriginalTouchEvent = window.TouchEvent;
+  if (!OriginalTouchEvent) return;
+  var nativeEvent;
+  try {
+    nativeEvent = document.createEvent("TouchEvent");
+  } catch (ex) {
+    return;
+  }
+  var nonEnumDescriptor = {
+    enumerable: false
+  };
+  function nonEnum(obj, prop) {
+    Object.defineProperty(obj, prop, nonEnumDescriptor);
+  }
+  function Touch(impl) {
+    setWrapper(impl, this);
+  }
+  Touch.prototype = {
+    get target() {
+      return wrap(unsafeUnwrap(this).target);
+    }
+  };
+  var descr = {
+    configurable: true,
+    enumerable: true,
+    get: null
+  };
+  [ "clientX", "clientY", "screenX", "screenY", "pageX", "pageY", "identifier", "webkitRadiusX", "webkitRadiusY", "webkitRotationAngle", "webkitForce" ].forEach(function(name) {
+    descr.get = function() {
+      return unsafeUnwrap(this)[name];
+    };
+    Object.defineProperty(Touch.prototype, name, descr);
+  });
+  function TouchList() {
+    this.length = 0;
+    nonEnum(this, "length");
+  }
+  TouchList.prototype = {
+    item: function(index) {
+      return this[index];
+    }
+  };
+  function wrapTouchList(nativeTouchList) {
+    var list = new TouchList();
+    for (var i = 0; i < nativeTouchList.length; i++) {
+      list[i] = new Touch(nativeTouchList[i]);
+    }
+    list.length = i;
+    return list;
+  }
+  function TouchEvent(impl) {
+    UIEvent.call(this, impl);
+  }
+  TouchEvent.prototype = Object.create(UIEvent.prototype);
+  mixin(TouchEvent.prototype, {
+    get touches() {
+      return wrapTouchList(unsafeUnwrap(this).touches);
+    },
+    get targetTouches() {
+      return wrapTouchList(unsafeUnwrap(this).targetTouches);
+    },
+    get changedTouches() {
+      return wrapTouchList(unsafeUnwrap(this).changedTouches);
+    },
+    initTouchEvent: function() {
+      throw new Error("Not implemented");
+    }
+  });
+  registerWrapper(OriginalTouchEvent, TouchEvent, nativeEvent);
+  scope.wrappers.Touch = Touch;
+  scope.wrappers.TouchEvent = TouchEvent;
+  scope.wrappers.TouchList = TouchList;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var wrap = scope.wrap;
+  var nonEnumDescriptor = {
+    enumerable: false
+  };
+  function nonEnum(obj, prop) {
+    Object.defineProperty(obj, prop, nonEnumDescriptor);
+  }
+  function NodeList() {
+    this.length = 0;
+    nonEnum(this, "length");
+  }
+  NodeList.prototype = {
+    item: function(index) {
+      return this[index];
+    }
+  };
+  nonEnum(NodeList.prototype, "item");
+  function wrapNodeList(list) {
+    if (list == null) return list;
+    var wrapperList = new NodeList();
+    for (var i = 0, length = list.length; i < length; i++) {
+      wrapperList[i] = wrap(list[i]);
+    }
+    wrapperList.length = length;
+    return wrapperList;
+  }
+  function addWrapNodeListMethod(wrapperConstructor, name) {
+    wrapperConstructor.prototype[name] = function() {
+      return wrapNodeList(unsafeUnwrap(this)[name].apply(unsafeUnwrap(this), arguments));
+    };
+  }
+  scope.wrappers.NodeList = NodeList;
+  scope.addWrapNodeListMethod = addWrapNodeListMethod;
+  scope.wrapNodeList = wrapNodeList;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  scope.wrapHTMLCollection = scope.wrapNodeList;
+  scope.wrappers.HTMLCollection = scope.wrappers.NodeList;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var EventTarget = scope.wrappers.EventTarget;
+  var NodeList = scope.wrappers.NodeList;
+  var TreeScope = scope.TreeScope;
+  var assert = scope.assert;
+  var defineWrapGetter = scope.defineWrapGetter;
+  var enqueueMutation = scope.enqueueMutation;
+  var getTreeScope = scope.getTreeScope;
+  var isWrapper = scope.isWrapper;
+  var mixin = scope.mixin;
+  var registerTransientObservers = scope.registerTransientObservers;
+  var registerWrapper = scope.registerWrapper;
+  var setTreeScope = scope.setTreeScope;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var unwrap = scope.unwrap;
+  var unwrapIfNeeded = scope.unwrapIfNeeded;
+  var wrap = scope.wrap;
+  var wrapIfNeeded = scope.wrapIfNeeded;
+  var wrappers = scope.wrappers;
+  function assertIsNodeWrapper(node) {
+    assert(node instanceof Node);
+  }
+  function createOneElementNodeList(node) {
+    var nodes = new NodeList();
+    nodes[0] = node;
+    nodes.length = 1;
+    return nodes;
+  }
+  var surpressMutations = false;
+  function enqueueRemovalForInsertedNodes(node, parent, nodes) {
+    enqueueMutation(parent, "childList", {
+      removedNodes: nodes,
+      previousSibling: node.previousSibling,
+      nextSibling: node.nextSibling
+    });
+  }
+  function enqueueRemovalForInsertedDocumentFragment(df, nodes) {
+    enqueueMutation(df, "childList", {
+      removedNodes: nodes
+    });
+  }
+  function collectNodes(node, parentNode, previousNode, nextNode) {
+    if (node instanceof DocumentFragment) {
+      var nodes = collectNodesForDocumentFragment(node);
+      surpressMutations = true;
+      for (var i = nodes.length - 1; i >= 0; i--) {
+        node.removeChild(nodes[i]);
+        nodes[i].parentNode_ = parentNode;
+      }
+      surpressMutations = false;
+      for (var i = 0; i < nodes.length; i++) {
+        nodes[i].previousSibling_ = nodes[i - 1] || previousNode;
+        nodes[i].nextSibling_ = nodes[i + 1] || nextNode;
+      }
+      if (previousNode) previousNode.nextSibling_ = nodes[0];
+      if (nextNode) nextNode.previousSibling_ = nodes[nodes.length - 1];
+      return nodes;
+    }
+    var nodes = createOneElementNodeList(node);
+    var oldParent = node.parentNode;
+    if (oldParent) {
+      oldParent.removeChild(node);
+    }
+    node.parentNode_ = parentNode;
+    node.previousSibling_ = previousNode;
+    node.nextSibling_ = nextNode;
+    if (previousNode) previousNode.nextSibling_ = node;
+    if (nextNode) nextNode.previousSibling_ = node;
+    return nodes;
+  }
+  function collectNodesNative(node) {
+    if (node instanceof DocumentFragment) return collectNodesForDocumentFragment(node);
+    var nodes = createOneElementNodeList(node);
+    var oldParent = node.parentNode;
+    if (oldParent) enqueueRemovalForInsertedNodes(node, oldParent, nodes);
+    return nodes;
+  }
+  function collectNodesForDocumentFragment(node) {
+    var nodes = new NodeList();
+    var i = 0;
+    for (var child = node.firstChild; child; child = child.nextSibling) {
+      nodes[i++] = child;
+    }
+    nodes.length = i;
+    enqueueRemovalForInsertedDocumentFragment(node, nodes);
+    return nodes;
+  }
+  function snapshotNodeList(nodeList) {
+    return nodeList;
+  }
+  function nodeWasAdded(node, treeScope) {
+    setTreeScope(node, treeScope);
+    node.nodeIsInserted_();
+  }
+  function nodesWereAdded(nodes, parent) {
+    var treeScope = getTreeScope(parent);
+    for (var i = 0; i < nodes.length; i++) {
+      nodeWasAdded(nodes[i], treeScope);
+    }
+  }
+  function nodeWasRemoved(node) {
+    setTreeScope(node, new TreeScope(node, null));
+  }
+  function nodesWereRemoved(nodes) {
+    for (var i = 0; i < nodes.length; i++) {
+      nodeWasRemoved(nodes[i]);
+    }
+  }
+  function ensureSameOwnerDocument(parent, child) {
+    var ownerDoc = parent.nodeType === Node.DOCUMENT_NODE ? parent : parent.ownerDocument;
+    if (ownerDoc !== child.ownerDocument) ownerDoc.adoptNode(child);
+  }
+  function adoptNodesIfNeeded(owner, nodes) {
+    if (!nodes.length) return;
+    var ownerDoc = owner.ownerDocument;
+    if (ownerDoc === nodes[0].ownerDocument) return;
+    for (var i = 0; i < nodes.length; i++) {
+      scope.adoptNodeNoRemove(nodes[i], ownerDoc);
+    }
+  }
+  function unwrapNodesForInsertion(owner, nodes) {
+    adoptNodesIfNeeded(owner, nodes);
+    var length = nodes.length;
+    if (length === 1) return unwrap(nodes[0]);
+    var df = unwrap(owner.ownerDocument.createDocumentFragment());
+    for (var i = 0; i < length; i++) {
+      df.appendChild(unwrap(nodes[i]));
+    }
+    return df;
+  }
+  function clearChildNodes(wrapper) {
+    if (wrapper.firstChild_ !== undefined) {
+      var child = wrapper.firstChild_;
+      while (child) {
+        var tmp = child;
+        child = child.nextSibling_;
+        tmp.parentNode_ = tmp.previousSibling_ = tmp.nextSibling_ = undefined;
+      }
+    }
+    wrapper.firstChild_ = wrapper.lastChild_ = undefined;
+  }
+  function removeAllChildNodes(wrapper) {
+    if (wrapper.invalidateShadowRenderer()) {
+      var childWrapper = wrapper.firstChild;
+      while (childWrapper) {
+        assert(childWrapper.parentNode === wrapper);
+        var nextSibling = childWrapper.nextSibling;
+        var childNode = unwrap(childWrapper);
+        var parentNode = childNode.parentNode;
+        if (parentNode) originalRemoveChild.call(parentNode, childNode);
+        childWrapper.previousSibling_ = childWrapper.nextSibling_ = childWrapper.parentNode_ = null;
+        childWrapper = nextSibling;
+      }
+      wrapper.firstChild_ = wrapper.lastChild_ = null;
+    } else {
+      var node = unwrap(wrapper);
+      var child = node.firstChild;
+      var nextSibling;
+      while (child) {
+        nextSibling = child.nextSibling;
+        originalRemoveChild.call(node, child);
+        child = nextSibling;
+      }
+    }
+  }
+  function invalidateParent(node) {
+    var p = node.parentNode;
+    return p && p.invalidateShadowRenderer();
+  }
+  function cleanupNodes(nodes) {
+    for (var i = 0, n; i < nodes.length; i++) {
+      n = nodes[i];
+      n.parentNode.removeChild(n);
+    }
+  }
+  var originalImportNode = document.importNode;
+  var originalCloneNode = window.Node.prototype.cloneNode;
+  function cloneNode(node, deep, opt_doc) {
+    var clone;
+    if (opt_doc) clone = wrap(originalImportNode.call(opt_doc, unsafeUnwrap(node), false)); else clone = wrap(originalCloneNode.call(unsafeUnwrap(node), false));
+    if (deep) {
+      for (var child = node.firstChild; child; child = child.nextSibling) {
+        clone.appendChild(cloneNode(child, true, opt_doc));
+      }
+      if (node instanceof wrappers.HTMLTemplateElement) {
+        var cloneContent = clone.content;
+        for (var child = node.content.firstChild; child; child = child.nextSibling) {
+          cloneContent.appendChild(cloneNode(child, true, opt_doc));
+        }
+      }
+    }
+    return clone;
+  }
+  function contains(self, child) {
+    if (!child || getTreeScope(self) !== getTreeScope(child)) return false;
+    for (var node = child; node; node = node.parentNode) {
+      if (node === self) return true;
+    }
+    return false;
+  }
+  var OriginalNode = window.Node;
+  function Node(original) {
+    assert(original instanceof OriginalNode);
+    EventTarget.call(this, original);
+    this.parentNode_ = undefined;
+    this.firstChild_ = undefined;
+    this.lastChild_ = undefined;
+    this.nextSibling_ = undefined;
+    this.previousSibling_ = undefined;
+    this.treeScope_ = undefined;
+  }
+  var OriginalDocumentFragment = window.DocumentFragment;
+  var originalAppendChild = OriginalNode.prototype.appendChild;
+  var originalCompareDocumentPosition = OriginalNode.prototype.compareDocumentPosition;
+  var originalInsertBefore = OriginalNode.prototype.insertBefore;
+  var originalRemoveChild = OriginalNode.prototype.removeChild;
+  var originalReplaceChild = OriginalNode.prototype.replaceChild;
+  var isIe = /Trident|Edge/.test(navigator.userAgent);
+  var removeChildOriginalHelper = isIe ? function(parent, child) {
+    try {
+      originalRemoveChild.call(parent, child);
+    } catch (ex) {
+      if (!(parent instanceof OriginalDocumentFragment)) throw ex;
+    }
+  } : function(parent, child) {
+    originalRemoveChild.call(parent, child);
+  };
+  Node.prototype = Object.create(EventTarget.prototype);
+  mixin(Node.prototype, {
+    appendChild: function(childWrapper) {
+      return this.insertBefore(childWrapper, null);
+    },
+    insertBefore: function(childWrapper, refWrapper) {
+      assertIsNodeWrapper(childWrapper);
+      var refNode;
+      if (refWrapper) {
+        if (isWrapper(refWrapper)) {
+          refNode = unwrap(refWrapper);
+        } else {
+          refNode = refWrapper;
+          refWrapper = wrap(refNode);
+        }
+      } else {
+        refWrapper = null;
+        refNode = null;
+      }
+      refWrapper && assert(refWrapper.parentNode === this);
+      var nodes;
+      var previousNode = refWrapper ? refWrapper.previousSibling : this.lastChild;
+      var useNative = !this.invalidateShadowRenderer() && !invalidateParent(childWrapper);
+      if (useNative) nodes = collectNodesNative(childWrapper); else nodes = collectNodes(childWrapper, this, previousNode, refWrapper);
+      if (useNative) {
+        ensureSameOwnerDocument(this, childWrapper);
+        clearChildNodes(this);
+        originalInsertBefore.call(unsafeUnwrap(this), unwrap(childWrapper), refNode);
+      } else {
+        if (!previousNode) this.firstChild_ = nodes[0];
+        if (!refWrapper) {
+          this.lastChild_ = nodes[nodes.length - 1];
+          if (this.firstChild_ === undefined) this.firstChild_ = this.firstChild;
+        }
+        var parentNode = refNode ? refNode.parentNode : unsafeUnwrap(this);
+        if (parentNode) {
+          originalInsertBefore.call(parentNode, unwrapNodesForInsertion(this, nodes), refNode);
+        } else {
+          adoptNodesIfNeeded(this, nodes);
+        }
+      }
+      enqueueMutation(this, "childList", {
+        addedNodes: nodes,
+        nextSibling: refWrapper,
+        previousSibling: previousNode
+      });
+      nodesWereAdded(nodes, this);
+      return childWrapper;
+    },
+    removeChild: function(childWrapper) {
+      assertIsNodeWrapper(childWrapper);
+      if (childWrapper.parentNode !== this) {
+        var found = false;
+        var childNodes = this.childNodes;
+        for (var ieChild = this.firstChild; ieChild; ieChild = ieChild.nextSibling) {
+          if (ieChild === childWrapper) {
+            found = true;
+            break;
+          }
+        }
+        if (!found) {
+          throw new Error("NotFoundError");
+        }
+      }
+      var childNode = unwrap(childWrapper);
+      var childWrapperNextSibling = childWrapper.nextSibling;
+      var childWrapperPreviousSibling = childWrapper.previousSibling;
+      if (this.invalidateShadowRenderer()) {
+        var thisFirstChild = this.firstChild;
+        var thisLastChild = this.lastChild;
+        var parentNode = childNode.parentNode;
+        if (parentNode) removeChildOriginalHelper(parentNode, childNode);
+        if (thisFirstChild === childWrapper) this.firstChild_ = childWrapperNextSibling;
+        if (thisLastChild === childWrapper) this.lastChild_ = childWrapperPreviousSibling;
+        if (childWrapperPreviousSibling) childWrapperPreviousSibling.nextSibling_ = childWrapperNextSibling;
+        if (childWrapperNextSibling) {
+          childWrapperNextSibling.previousSibling_ = childWrapperPreviousSibling;
+        }
+        childWrapper.previousSibling_ = childWrapper.nextSibling_ = childWrapper.parentNode_ = undefined;
+      } else {
+        clearChildNodes(this);
+        removeChildOriginalHelper(unsafeUnwrap(this), childNode);
+      }
+      if (!surpressMutations) {
+        enqueueMutation(this, "childList", {
+          removedNodes: createOneElementNodeList(childWrapper),
+          nextSibling: childWrapperNextSibling,
+          previousSibling: childWrapperPreviousSibling
+        });
+      }
+      registerTransientObservers(this, childWrapper);
+      return childWrapper;
+    },
+    replaceChild: function(newChildWrapper, oldChildWrapper) {
+      assertIsNodeWrapper(newChildWrapper);
+      var oldChildNode;
+      if (isWrapper(oldChildWrapper)) {
+        oldChildNode = unwrap(oldChildWrapper);
+      } else {
+        oldChildNode = oldChildWrapper;
+        oldChildWrapper = wrap(oldChildNode);
+      }
+      if (oldChildWrapper.parentNode !== this) {
+        throw new Error("NotFoundError");
+      }
+      var nextNode = oldChildWrapper.nextSibling;
+      var previousNode = oldChildWrapper.previousSibling;
+      var nodes;
+      var useNative = !this.invalidateShadowRenderer() && !invalidateParent(newChildWrapper);
+      if (useNative) {
+        nodes = collectNodesNative(newChildWrapper);
+      } else {
+        if (nextNode === newChildWrapper) nextNode = newChildWrapper.nextSibling;
+        nodes = collectNodes(newChildWrapper, this, previousNode, nextNode);
+      }
+      if (!useNative) {
+        if (this.firstChild === oldChildWrapper) this.firstChild_ = nodes[0];
+        if (this.lastChild === oldChildWrapper) this.lastChild_ = nodes[nodes.length - 1];
+        oldChildWrapper.previousSibling_ = oldChildWrapper.nextSibling_ = oldChildWrapper.parentNode_ = undefined;
+        if (oldChildNode.parentNode) {
+          originalReplaceChild.call(oldChildNode.parentNode, unwrapNodesForInsertion(this, nodes), oldChildNode);
+        }
+      } else {
+        ensureSameOwnerDocument(this, newChildWrapper);
+        clearChildNodes(this);
+        originalReplaceChild.call(unsafeUnwrap(this), unwrap(newChildWrapper), oldChildNode);
+      }
+      enqueueMutation(this, "childList", {
+        addedNodes: nodes,
+        removedNodes: createOneElementNodeList(oldChildWrapper),
+        nextSibling: nextNode,
+        previousSibling: previousNode
+      });
+      nodeWasRemoved(oldChildWrapper);
+      nodesWereAdded(nodes, this);
+      return oldChildWrapper;
+    },
+    nodeIsInserted_: function() {
+      for (var child = this.firstChild; child; child = child.nextSibling) {
+        child.nodeIsInserted_();
+      }
+    },
+    hasChildNodes: function() {
+      return this.firstChild !== null;
+    },
+    get parentNode() {
+      return this.parentNode_ !== undefined ? this.parentNode_ : wrap(unsafeUnwrap(this).parentNode);
+    },
+    get firstChild() {
+      return this.firstChild_ !== undefined ? this.firstChild_ : wrap(unsafeUnwrap(this).firstChild);
+    },
+    get lastChild() {
+      return this.lastChild_ !== undefined ? this.lastChild_ : wrap(unsafeUnwrap(this).lastChild);
+    },
+    get nextSibling() {
+      return this.nextSibling_ !== undefined ? this.nextSibling_ : wrap(unsafeUnwrap(this).nextSibling);
+    },
+    get previousSibling() {
+      return this.previousSibling_ !== undefined ? this.previousSibling_ : wrap(unsafeUnwrap(this).previousSibling);
+    },
+    get parentElement() {
+      var p = this.parentNode;
+      while (p && p.nodeType !== Node.ELEMENT_NODE) {
+        p = p.parentNode;
+      }
+      return p;
+    },
+    get textContent() {
+      var s = "";
+      for (var child = this.firstChild; child; child = child.nextSibling) {
+        if (child.nodeType != Node.COMMENT_NODE) {
+          s += child.textContent;
+        }
+      }
+      return s;
+    },
+    set textContent(textContent) {
+      if (textContent == null) textContent = "";
+      var removedNodes = snapshotNodeList(this.childNodes);
+      if (this.invalidateShadowRenderer()) {
+        removeAllChildNodes(this);
+        if (textContent !== "") {
+          var textNode = unsafeUnwrap(this).ownerDocument.createTextNode(textContent);
+          this.appendChild(textNode);
+        }
+      } else {
+        clearChildNodes(this);
+        unsafeUnwrap(this).textContent = textContent;
+      }
+      var addedNodes = snapshotNodeList(this.childNodes);
+      enqueueMutation(this, "childList", {
+        addedNodes: addedNodes,
+        removedNodes: removedNodes
+      });
+      nodesWereRemoved(removedNodes);
+      nodesWereAdded(addedNodes, this);
+    },
+    get childNodes() {
+      var wrapperList = new NodeList();
+      var i = 0;
+      for (var child = this.firstChild; child; child = child.nextSibling) {
+        wrapperList[i++] = child;
+      }
+      wrapperList.length = i;
+      return wrapperList;
+    },
+    cloneNode: function(deep) {
+      return cloneNode(this, deep);
+    },
+    contains: function(child) {
+      return contains(this, wrapIfNeeded(child));
+    },
+    compareDocumentPosition: function(otherNode) {
+      return originalCompareDocumentPosition.call(unsafeUnwrap(this), unwrapIfNeeded(otherNode));
+    },
+    normalize: function() {
+      var nodes = snapshotNodeList(this.childNodes);
+      var remNodes = [];
+      var s = "";
+      var modNode;
+      for (var i = 0, n; i < nodes.length; i++) {
+        n = nodes[i];
+        if (n.nodeType === Node.TEXT_NODE) {
+          if (!modNode && !n.data.length) this.removeChild(n); else if (!modNode) modNode = n; else {
+            s += n.data;
+            remNodes.push(n);
+          }
+        } else {
+          if (modNode && remNodes.length) {
+            modNode.data += s;
+            cleanupNodes(remNodes);
+          }
+          remNodes = [];
+          s = "";
+          modNode = null;
+          if (n.childNodes.length) n.normalize();
+        }
+      }
+      if (modNode && remNodes.length) {
+        modNode.data += s;
+        cleanupNodes(remNodes);
+      }
+    }
+  });
+  defineWrapGetter(Node, "ownerDocument");
+  registerWrapper(OriginalNode, Node, document.createDocumentFragment());
+  delete Node.prototype.querySelector;
+  delete Node.prototype.querySelectorAll;
+  Node.prototype = mixin(Object.create(EventTarget.prototype), Node.prototype);
+  scope.cloneNode = cloneNode;
+  scope.nodeWasAdded = nodeWasAdded;
+  scope.nodeWasRemoved = nodeWasRemoved;
+  scope.nodesWereAdded = nodesWereAdded;
+  scope.nodesWereRemoved = nodesWereRemoved;
+  scope.originalInsertBefore = originalInsertBefore;
+  scope.originalRemoveChild = originalRemoveChild;
+  scope.snapshotNodeList = snapshotNodeList;
+  scope.wrappers.Node = Node;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLCollection = scope.wrappers.HTMLCollection;
+  var NodeList = scope.wrappers.NodeList;
+  var getTreeScope = scope.getTreeScope;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var wrap = scope.wrap;
+  var originalDocumentQuerySelector = document.querySelector;
+  var originalElementQuerySelector = document.documentElement.querySelector;
+  var originalDocumentQuerySelectorAll = document.querySelectorAll;
+  var originalElementQuerySelectorAll = document.documentElement.querySelectorAll;
+  var originalDocumentGetElementsByTagName = document.getElementsByTagName;
+  var originalElementGetElementsByTagName = document.documentElement.getElementsByTagName;
+  var originalDocumentGetElementsByTagNameNS = document.getElementsByTagNameNS;
+  var originalElementGetElementsByTagNameNS = document.documentElement.getElementsByTagNameNS;
+  var OriginalElement = window.Element;
+  var OriginalDocument = window.HTMLDocument || window.Document;
+  function filterNodeList(list, index, result, deep) {
+    var wrappedItem = null;
+    var root = null;
+    for (var i = 0, length = list.length; i < length; i++) {
+      wrappedItem = wrap(list[i]);
+      if (!deep && (root = getTreeScope(wrappedItem).root)) {
+        if (root instanceof scope.wrappers.ShadowRoot) {
+          continue;
+        }
+      }
+      result[index++] = wrappedItem;
+    }
+    return index;
+  }
+  function shimSelector(selector) {
+    return String(selector).replace(/\/deep\/|::shadow/g, " ");
+  }
+  function shimMatchesSelector(selector) {
+    return String(selector).replace(/:host\(([^\s]+)\)/g, "$1").replace(/([^\s]):host/g, "$1").replace(":host", "*").replace(/\^|\/shadow\/|\/shadow-deep\/|::shadow|\/deep\/|::content/g, " ");
+  }
+  function findOne(node, selector) {
+    var m, el = node.firstElementChild;
+    while (el) {
+      if (el.matches(selector)) return el;
+      m = findOne(el, selector);
+      if (m) return m;
+      el = el.nextElementSibling;
+    }
+    return null;
+  }
+  function matchesSelector(el, selector) {
+    return el.matches(selector);
+  }
+  var XHTML_NS = "http://www.w3.org/1999/xhtml";
+  function matchesTagName(el, localName, localNameLowerCase) {
+    var ln = el.localName;
+    return ln === localName || ln === localNameLowerCase && el.namespaceURI === XHTML_NS;
+  }
+  function matchesEveryThing() {
+    return true;
+  }
+  function matchesLocalNameOnly(el, ns, localName) {
+    return el.localName === localName;
+  }
+  function matchesNameSpace(el, ns) {
+    return el.namespaceURI === ns;
+  }
+  function matchesLocalNameNS(el, ns, localName) {
+    return el.namespaceURI === ns && el.localName === localName;
+  }
+  function findElements(node, index, result, p, arg0, arg1) {
+    var el = node.firstElementChild;
+    while (el) {
+      if (p(el, arg0, arg1)) result[index++] = el;
+      index = findElements(el, index, result, p, arg0, arg1);
+      el = el.nextElementSibling;
+    }
+    return index;
+  }
+  function querySelectorAllFiltered(p, index, result, selector, deep) {
+    var target = unsafeUnwrap(this);
+    var list;
+    var root = getTreeScope(this).root;
+    if (root instanceof scope.wrappers.ShadowRoot) {
+      return findElements(this, index, result, p, selector, null);
+    } else if (target instanceof OriginalElement) {
+      list = originalElementQuerySelectorAll.call(target, selector);
+    } else if (target instanceof OriginalDocument) {
+      list = originalDocumentQuerySelectorAll.call(target, selector);
+    } else {
+      return findElements(this, index, result, p, selector, null);
+    }
+    return filterNodeList(list, index, result, deep);
+  }
+  var SelectorsInterface = {
+    querySelector: function(selector) {
+      var shimmed = shimSelector(selector);
+      var deep = shimmed !== selector;
+      selector = shimmed;
+      var target = unsafeUnwrap(this);
+      var wrappedItem;
+      var root = getTreeScope(this).root;
+      if (root instanceof scope.wrappers.ShadowRoot) {
+        return findOne(this, selector);
+      } else if (target instanceof OriginalElement) {
+        wrappedItem = wrap(originalElementQuerySelector.call(target, selector));
+      } else if (target instanceof OriginalDocument) {
+        wrappedItem = wrap(originalDocumentQuerySelector.call(target, selector));
+      } else {
+        return findOne(this, selector);
+      }
+      if (!wrappedItem) {
+        return wrappedItem;
+      } else if (!deep && (root = getTreeScope(wrappedItem).root)) {
+        if (root instanceof scope.wrappers.ShadowRoot) {
+          return findOne(this, selector);
+        }
+      }
+      return wrappedItem;
+    },
+    querySelectorAll: function(selector) {
+      var shimmed = shimSelector(selector);
+      var deep = shimmed !== selector;
+      selector = shimmed;
+      var result = new NodeList();
+      result.length = querySelectorAllFiltered.call(this, matchesSelector, 0, result, selector, deep);
+      return result;
+    }
+  };
+  var MatchesInterface = {
+    matches: function(selector) {
+      selector = shimMatchesSelector(selector);
+      return scope.originalMatches.call(unsafeUnwrap(this), selector);
+    }
+  };
+  function getElementsByTagNameFiltered(p, index, result, localName, lowercase) {
+    var target = unsafeUnwrap(this);
+    var list;
+    var root = getTreeScope(this).root;
+    if (root instanceof scope.wrappers.ShadowRoot) {
+      return findElements(this, index, result, p, localName, lowercase);
+    } else if (target instanceof OriginalElement) {
+      list = originalElementGetElementsByTagName.call(target, localName, lowercase);
+    } else if (target instanceof OriginalDocument) {
+      list = originalDocumentGetElementsByTagName.call(target, localName, lowercase);
+    } else {
+      return findElements(this, index, result, p, localName, lowercase);
+    }
+    return filterNodeList(list, index, result, false);
+  }
+  function getElementsByTagNameNSFiltered(p, index, result, ns, localName) {
+    var target = unsafeUnwrap(this);
+    var list;
+    var root = getTreeScope(this).root;
+    if (root instanceof scope.wrappers.ShadowRoot) {
+      return findElements(this, index, result, p, ns, localName);
+    } else if (target instanceof OriginalElement) {
+      list = originalElementGetElementsByTagNameNS.call(target, ns, localName);
+    } else if (target instanceof OriginalDocument) {
+      list = originalDocumentGetElementsByTagNameNS.call(target, ns, localName);
+    } else {
+      return findElements(this, index, result, p, ns, localName);
+    }
+    return filterNodeList(list, index, result, false);
+  }
+  var GetElementsByInterface = {
+    getElementsByTagName: function(localName) {
+      var result = new HTMLCollection();
+      var match = localName === "*" ? matchesEveryThing : matchesTagName;
+      result.length = getElementsByTagNameFiltered.call(this, match, 0, result, localName, localName.toLowerCase());
+      return result;
+    },
+    getElementsByClassName: function(className) {
+      return this.querySelectorAll("." + className);
+    },
+    getElementsByTagNameNS: function(ns, localName) {
+      var result = new HTMLCollection();
+      var match = null;
+      if (ns === "*") {
+        match = localName === "*" ? matchesEveryThing : matchesLocalNameOnly;
+      } else {
+        match = localName === "*" ? matchesNameSpace : matchesLocalNameNS;
+      }
+      result.length = getElementsByTagNameNSFiltered.call(this, match, 0, result, ns || null, localName);
+      return result;
+    }
+  };
+  scope.GetElementsByInterface = GetElementsByInterface;
+  scope.SelectorsInterface = SelectorsInterface;
+  scope.MatchesInterface = MatchesInterface;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var NodeList = scope.wrappers.NodeList;
+  function forwardElement(node) {
+    while (node && node.nodeType !== Node.ELEMENT_NODE) {
+      node = node.nextSibling;
+    }
+    return node;
+  }
+  function backwardsElement(node) {
+    while (node && node.nodeType !== Node.ELEMENT_NODE) {
+      node = node.previousSibling;
+    }
+    return node;
+  }
+  var ParentNodeInterface = {
+    get firstElementChild() {
+      return forwardElement(this.firstChild);
+    },
+    get lastElementChild() {
+      return backwardsElement(this.lastChild);
+    },
+    get childElementCount() {
+      var count = 0;
+      for (var child = this.firstElementChild; child; child = child.nextElementSibling) {
+        count++;
+      }
+      return count;
+    },
+    get children() {
+      var wrapperList = new NodeList();
+      var i = 0;
+      for (var child = this.firstElementChild; child; child = child.nextElementSibling) {
+        wrapperList[i++] = child;
+      }
+      wrapperList.length = i;
+      return wrapperList;
+    },
+    remove: function() {
+      var p = this.parentNode;
+      if (p) p.removeChild(this);
+    }
+  };
+  var ChildNodeInterface = {
+    get nextElementSibling() {
+      return forwardElement(this.nextSibling);
+    },
+    get previousElementSibling() {
+      return backwardsElement(this.previousSibling);
+    }
+  };
+  scope.ChildNodeInterface = ChildNodeInterface;
+  scope.ParentNodeInterface = ParentNodeInterface;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var ChildNodeInterface = scope.ChildNodeInterface;
+  var Node = scope.wrappers.Node;
+  var enqueueMutation = scope.enqueueMutation;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var OriginalCharacterData = window.CharacterData;
+  function CharacterData(node) {
+    Node.call(this, node);
+  }
+  CharacterData.prototype = Object.create(Node.prototype);
+  mixin(CharacterData.prototype, {
+    get textContent() {
+      return this.data;
+    },
+    set textContent(value) {
+      this.data = value;
+    },
+    get data() {
+      return unsafeUnwrap(this).data;
+    },
+    set data(value) {
+      var oldValue = unsafeUnwrap(this).data;
+      enqueueMutation(this, "characterData", {
+        oldValue: oldValue
+      });
+      unsafeUnwrap(this).data = value;
+    }
+  });
+  mixin(CharacterData.prototype, ChildNodeInterface);
+  registerWrapper(OriginalCharacterData, CharacterData, document.createTextNode(""));
+  scope.wrappers.CharacterData = CharacterData;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var CharacterData = scope.wrappers.CharacterData;
+  var enqueueMutation = scope.enqueueMutation;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  function toUInt32(x) {
+    return x >>> 0;
+  }
+  var OriginalText = window.Text;
+  function Text(node) {
+    CharacterData.call(this, node);
+  }
+  Text.prototype = Object.create(CharacterData.prototype);
+  mixin(Text.prototype, {
+    splitText: function(offset) {
+      offset = toUInt32(offset);
+      var s = this.data;
+      if (offset > s.length) throw new Error("IndexSizeError");
+      var head = s.slice(0, offset);
+      var tail = s.slice(offset);
+      this.data = head;
+      var newTextNode = this.ownerDocument.createTextNode(tail);
+      if (this.parentNode) this.parentNode.insertBefore(newTextNode, this.nextSibling);
+      return newTextNode;
+    }
+  });
+  registerWrapper(OriginalText, Text, document.createTextNode(""));
+  scope.wrappers.Text = Text;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  if (!window.DOMTokenList) {
+    console.warn("Missing DOMTokenList prototype, please include a " + "compatible classList polyfill such as http://goo.gl/uTcepH.");
+    return;
+  }
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var enqueueMutation = scope.enqueueMutation;
+  function getClass(el) {
+    return unsafeUnwrap(el).getAttribute("class");
+  }
+  function enqueueClassAttributeChange(el, oldValue) {
+    enqueueMutation(el, "attributes", {
+      name: "class",
+      namespace: null,
+      oldValue: oldValue
+    });
+  }
+  function invalidateClass(el) {
+    scope.invalidateRendererBasedOnAttribute(el, "class");
+  }
+  function changeClass(tokenList, method, args) {
+    var ownerElement = tokenList.ownerElement_;
+    if (ownerElement == null) {
+      return method.apply(tokenList, args);
+    }
+    var oldValue = getClass(ownerElement);
+    var retv = method.apply(tokenList, args);
+    if (getClass(ownerElement) !== oldValue) {
+      enqueueClassAttributeChange(ownerElement, oldValue);
+      invalidateClass(ownerElement);
+    }
+    return retv;
+  }
+  var oldAdd = DOMTokenList.prototype.add;
+  DOMTokenList.prototype.add = function() {
+    changeClass(this, oldAdd, arguments);
+  };
+  var oldRemove = DOMTokenList.prototype.remove;
+  DOMTokenList.prototype.remove = function() {
+    changeClass(this, oldRemove, arguments);
+  };
+  var oldToggle = DOMTokenList.prototype.toggle;
+  DOMTokenList.prototype.toggle = function() {
+    return changeClass(this, oldToggle, arguments);
+  };
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var ChildNodeInterface = scope.ChildNodeInterface;
+  var GetElementsByInterface = scope.GetElementsByInterface;
+  var Node = scope.wrappers.Node;
+  var ParentNodeInterface = scope.ParentNodeInterface;
+  var SelectorsInterface = scope.SelectorsInterface;
+  var MatchesInterface = scope.MatchesInterface;
+  var addWrapNodeListMethod = scope.addWrapNodeListMethod;
+  var enqueueMutation = scope.enqueueMutation;
+  var mixin = scope.mixin;
+  var oneOf = scope.oneOf;
+  var registerWrapper = scope.registerWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var wrappers = scope.wrappers;
+  var OriginalElement = window.Element;
+  var matchesNames = [ "matches", "mozMatchesSelector", "msMatchesSelector", "webkitMatchesSelector" ].filter(function(name) {
+    return OriginalElement.prototype[name];
+  });
+  var matchesName = matchesNames[0];
+  var originalMatches = OriginalElement.prototype[matchesName];
+  function invalidateRendererBasedOnAttribute(element, name) {
+    var p = element.parentNode;
+    if (!p || !p.shadowRoot) return;
+    var renderer = scope.getRendererForHost(p);
+    if (renderer.dependsOnAttribute(name)) renderer.invalidate();
+  }
+  function enqueAttributeChange(element, name, oldValue) {
+    enqueueMutation(element, "attributes", {
+      name: name,
+      namespace: null,
+      oldValue: oldValue
+    });
+  }
+  var classListTable = new WeakMap();
+  function Element(node) {
+    Node.call(this, node);
+  }
+  Element.prototype = Object.create(Node.prototype);
+  mixin(Element.prototype, {
+    createShadowRoot: function() {
+      var newShadowRoot = new wrappers.ShadowRoot(this);
+      unsafeUnwrap(this).polymerShadowRoot_ = newShadowRoot;
+      var renderer = scope.getRendererForHost(this);
+      renderer.invalidate();
+      return newShadowRoot;
+    },
+    get shadowRoot() {
+      return unsafeUnwrap(this).polymerShadowRoot_ || null;
+    },
+    setAttribute: function(name, value) {
+      var oldValue = unsafeUnwrap(this).getAttribute(name);
+      unsafeUnwrap(this).setAttribute(name, value);
+      enqueAttributeChange(this, name, oldValue);
+      invalidateRendererBasedOnAttribute(this, name);
+    },
+    removeAttribute: function(name) {
+      var oldValue = unsafeUnwrap(this).getAttribute(name);
+      unsafeUnwrap(this).removeAttribute(name);
+      enqueAttributeChange(this, name, oldValue);
+      invalidateRendererBasedOnAttribute(this, name);
+    },
+    get classList() {
+      var list = classListTable.get(this);
+      if (!list) {
+        list = unsafeUnwrap(this).classList;
+        if (!list) return;
+        list.ownerElement_ = this;
+        classListTable.set(this, list);
+      }
+      return list;
+    },
+    get className() {
+      return unsafeUnwrap(this).className;
+    },
+    set className(v) {
+      this.setAttribute("class", v);
+    },
+    get id() {
+      return unsafeUnwrap(this).id;
+    },
+    set id(v) {
+      this.setAttribute("id", v);
+    }
+  });
+  matchesNames.forEach(function(name) {
+    if (name !== "matches") {
+      Element.prototype[name] = function(selector) {
+        return this.matches(selector);
+      };
+    }
+  });
+  if (OriginalElement.prototype.webkitCreateShadowRoot) {
+    Element.prototype.webkitCreateShadowRoot = Element.prototype.createShadowRoot;
+  }
+  mixin(Element.prototype, ChildNodeInterface);
+  mixin(Element.prototype, GetElementsByInterface);
+  mixin(Element.prototype, ParentNodeInterface);
+  mixin(Element.prototype, SelectorsInterface);
+  mixin(Element.prototype, MatchesInterface);
+  registerWrapper(OriginalElement, Element, document.createElementNS(null, "x"));
+  scope.invalidateRendererBasedOnAttribute = invalidateRendererBasedOnAttribute;
+  scope.matchesNames = matchesNames;
+  scope.originalMatches = originalMatches;
+  scope.wrappers.Element = Element;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var Element = scope.wrappers.Element;
+  var defineGetter = scope.defineGetter;
+  var enqueueMutation = scope.enqueueMutation;
+  var mixin = scope.mixin;
+  var nodesWereAdded = scope.nodesWereAdded;
+  var nodesWereRemoved = scope.nodesWereRemoved;
+  var registerWrapper = scope.registerWrapper;
+  var snapshotNodeList = scope.snapshotNodeList;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var wrappers = scope.wrappers;
+  var escapeAttrRegExp = /[&\u00A0"]/g;
+  var escapeDataRegExp = /[&\u00A0<>]/g;
+  function escapeReplace(c) {
+    switch (c) {
+     case "&":
+      return "&amp;";
+
+     case "<":
+      return "&lt;";
+
+     case ">":
+      return "&gt;";
+
+     case '"':
+      return "&quot;";
+
+     case " ":
+      return "&nbsp;";
+    }
+  }
+  function escapeAttr(s) {
+    return s.replace(escapeAttrRegExp, escapeReplace);
+  }
+  function escapeData(s) {
+    return s.replace(escapeDataRegExp, escapeReplace);
+  }
+  function makeSet(arr) {
+    var set = {};
+    for (var i = 0; i < arr.length; i++) {
+      set[arr[i]] = true;
+    }
+    return set;
+  }
+  var voidElements = makeSet([ "area", "base", "br", "col", "command", "embed", "hr", "img", "input", "keygen", "link", "meta", "param", "source", "track", "wbr" ]);
+  var plaintextParents = makeSet([ "style", "script", "xmp", "iframe", "noembed", "noframes", "plaintext", "noscript" ]);
+  function getOuterHTML(node, parentNode) {
+    switch (node.nodeType) {
+     case Node.ELEMENT_NODE:
+      var tagName = node.tagName.toLowerCase();
+      var s = "<" + tagName;
+      var attrs = node.attributes;
+      for (var i = 0, attr; attr = attrs[i]; i++) {
+        s += " " + attr.name + '="' + escapeAttr(attr.value) + '"';
+      }
+      s += ">";
+      if (voidElements[tagName]) return s;
+      return s + getInnerHTML(node) + "</" + tagName + ">";
+
+     case Node.TEXT_NODE:
+      var data = node.data;
+      if (parentNode && plaintextParents[parentNode.localName]) return data;
+      return escapeData(data);
+
+     case Node.COMMENT_NODE:
+      return "<!--" + node.data + "-->";
+
+     default:
+      console.error(node);
+      throw new Error("not implemented");
+    }
+  }
+  function getInnerHTML(node) {
+    if (node instanceof wrappers.HTMLTemplateElement) node = node.content;
+    var s = "";
+    for (var child = node.firstChild; child; child = child.nextSibling) {
+      s += getOuterHTML(child, node);
+    }
+    return s;
+  }
+  function setInnerHTML(node, value, opt_tagName) {
+    var tagName = opt_tagName || "div";
+    node.textContent = "";
+    var tempElement = unwrap(node.ownerDocument.createElement(tagName));
+    tempElement.innerHTML = value;
+    var firstChild;
+    while (firstChild = tempElement.firstChild) {
+      node.appendChild(wrap(firstChild));
+    }
+  }
+  var oldIe = /MSIE/.test(navigator.userAgent);
+  var OriginalHTMLElement = window.HTMLElement;
+  var OriginalHTMLTemplateElement = window.HTMLTemplateElement;
+  function HTMLElement(node) {
+    Element.call(this, node);
+  }
+  HTMLElement.prototype = Object.create(Element.prototype);
+  mixin(HTMLElement.prototype, {
+    get innerHTML() {
+      return getInnerHTML(this);
+    },
+    set innerHTML(value) {
+      if (oldIe && plaintextParents[this.localName]) {
+        this.textContent = value;
+        return;
+      }
+      var removedNodes = snapshotNodeList(this.childNodes);
+      if (this.invalidateShadowRenderer()) {
+        if (this instanceof wrappers.HTMLTemplateElement) setInnerHTML(this.content, value); else setInnerHTML(this, value, this.tagName);
+      } else if (!OriginalHTMLTemplateElement && this instanceof wrappers.HTMLTemplateElement) {
+        setInnerHTML(this.content, value);
+      } else {
+        unsafeUnwrap(this).innerHTML = value;
+      }
+      var addedNodes = snapshotNodeList(this.childNodes);
+      enqueueMutation(this, "childList", {
+        addedNodes: addedNodes,
+        removedNodes: removedNodes
+      });
+      nodesWereRemoved(removedNodes);
+      nodesWereAdded(addedNodes, this);
+    },
+    get outerHTML() {
+      return getOuterHTML(this, this.parentNode);
+    },
+    set outerHTML(value) {
+      var p = this.parentNode;
+      if (p) {
+        p.invalidateShadowRenderer();
+        var df = frag(p, value);
+        p.replaceChild(df, this);
+      }
+    },
+    insertAdjacentHTML: function(position, text) {
+      var contextElement, refNode;
+      switch (String(position).toLowerCase()) {
+       case "beforebegin":
+        contextElement = this.parentNode;
+        refNode = this;
+        break;
+
+       case "afterend":
+        contextElement = this.parentNode;
+        refNode = this.nextSibling;
+        break;
+
+       case "afterbegin":
+        contextElement = this;
+        refNode = this.firstChild;
+        break;
+
+       case "beforeend":
+        contextElement = this;
+        refNode = null;
+        break;
+
+       default:
+        return;
+      }
+      var df = frag(contextElement, text);
+      contextElement.insertBefore(df, refNode);
+    },
+    get hidden() {
+      return this.hasAttribute("hidden");
+    },
+    set hidden(v) {
+      if (v) {
+        this.setAttribute("hidden", "");
+      } else {
+        this.removeAttribute("hidden");
+      }
+    }
+  });
+  function frag(contextElement, html) {
+    var p = unwrap(contextElement.cloneNode(false));
+    p.innerHTML = html;
+    var df = unwrap(document.createDocumentFragment());
+    var c;
+    while (c = p.firstChild) {
+      df.appendChild(c);
+    }
+    return wrap(df);
+  }
+  function getter(name) {
+    return function() {
+      scope.renderAllPending();
+      return unsafeUnwrap(this)[name];
+    };
+  }
+  function getterRequiresRendering(name) {
+    defineGetter(HTMLElement, name, getter(name));
+  }
+  [ "clientHeight", "clientLeft", "clientTop", "clientWidth", "offsetHeight", "offsetLeft", "offsetTop", "offsetWidth", "scrollHeight", "scrollWidth" ].forEach(getterRequiresRendering);
+  function getterAndSetterRequiresRendering(name) {
+    Object.defineProperty(HTMLElement.prototype, name, {
+      get: getter(name),
+      set: function(v) {
+        scope.renderAllPending();
+        unsafeUnwrap(this)[name] = v;
+      },
+      configurable: true,
+      enumerable: true
+    });
+  }
+  [ "scrollLeft", "scrollTop" ].forEach(getterAndSetterRequiresRendering);
+  function methodRequiresRendering(name) {
+    Object.defineProperty(HTMLElement.prototype, name, {
+      value: function() {
+        scope.renderAllPending();
+        return unsafeUnwrap(this)[name].apply(unsafeUnwrap(this), arguments);
+      },
+      configurable: true,
+      enumerable: true
+    });
+  }
+  [ "getBoundingClientRect", "getClientRects", "scrollIntoView" ].forEach(methodRequiresRendering);
+  registerWrapper(OriginalHTMLElement, HTMLElement, document.createElement("b"));
+  scope.wrappers.HTMLElement = HTMLElement;
+  scope.getInnerHTML = getInnerHTML;
+  scope.setInnerHTML = setInnerHTML;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var wrap = scope.wrap;
+  var OriginalHTMLCanvasElement = window.HTMLCanvasElement;
+  function HTMLCanvasElement(node) {
+    HTMLElement.call(this, node);
+  }
+  HTMLCanvasElement.prototype = Object.create(HTMLElement.prototype);
+  mixin(HTMLCanvasElement.prototype, {
+    getContext: function() {
+      var context = unsafeUnwrap(this).getContext.apply(unsafeUnwrap(this), arguments);
+      return context && wrap(context);
+    }
+  });
+  registerWrapper(OriginalHTMLCanvasElement, HTMLCanvasElement, document.createElement("canvas"));
+  scope.wrappers.HTMLCanvasElement = HTMLCanvasElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var OriginalHTMLContentElement = window.HTMLContentElement;
+  function HTMLContentElement(node) {
+    HTMLElement.call(this, node);
+  }
+  HTMLContentElement.prototype = Object.create(HTMLElement.prototype);
+  mixin(HTMLContentElement.prototype, {
+    constructor: HTMLContentElement,
+    get select() {
+      return this.getAttribute("select");
+    },
+    set select(value) {
+      this.setAttribute("select", value);
+    },
+    setAttribute: function(n, v) {
+      HTMLElement.prototype.setAttribute.call(this, n, v);
+      if (String(n).toLowerCase() === "select") this.invalidateShadowRenderer(true);
+    }
+  });
+  if (OriginalHTMLContentElement) registerWrapper(OriginalHTMLContentElement, HTMLContentElement);
+  scope.wrappers.HTMLContentElement = HTMLContentElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var wrapHTMLCollection = scope.wrapHTMLCollection;
+  var unwrap = scope.unwrap;
+  var OriginalHTMLFormElement = window.HTMLFormElement;
+  function HTMLFormElement(node) {
+    HTMLElement.call(this, node);
+  }
+  HTMLFormElement.prototype = Object.create(HTMLElement.prototype);
+  mixin(HTMLFormElement.prototype, {
+    get elements() {
+      return wrapHTMLCollection(unwrap(this).elements);
+    }
+  });
+  registerWrapper(OriginalHTMLFormElement, HTMLFormElement, document.createElement("form"));
+  scope.wrappers.HTMLFormElement = HTMLFormElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var registerWrapper = scope.registerWrapper;
+  var unwrap = scope.unwrap;
+  var rewrap = scope.rewrap;
+  var OriginalHTMLImageElement = window.HTMLImageElement;
+  function HTMLImageElement(node) {
+    HTMLElement.call(this, node);
+  }
+  HTMLImageElement.prototype = Object.create(HTMLElement.prototype);
+  registerWrapper(OriginalHTMLImageElement, HTMLImageElement, document.createElement("img"));
+  function Image(width, height) {
+    if (!(this instanceof Image)) {
+      throw new TypeError("DOM object constructor cannot be called as a function.");
+    }
+    var node = unwrap(document.createElement("img"));
+    HTMLElement.call(this, node);
+    rewrap(node, this);
+    if (width !== undefined) node.width = width;
+    if (height !== undefined) node.height = height;
+  }
+  Image.prototype = HTMLImageElement.prototype;
+  scope.wrappers.HTMLImageElement = HTMLImageElement;
+  scope.wrappers.Image = Image;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var mixin = scope.mixin;
+  var NodeList = scope.wrappers.NodeList;
+  var registerWrapper = scope.registerWrapper;
+  var OriginalHTMLShadowElement = window.HTMLShadowElement;
+  function HTMLShadowElement(node) {
+    HTMLElement.call(this, node);
+  }
+  HTMLShadowElement.prototype = Object.create(HTMLElement.prototype);
+  HTMLShadowElement.prototype.constructor = HTMLShadowElement;
+  if (OriginalHTMLShadowElement) registerWrapper(OriginalHTMLShadowElement, HTMLShadowElement);
+  scope.wrappers.HTMLShadowElement = HTMLShadowElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var contentTable = new WeakMap();
+  var templateContentsOwnerTable = new WeakMap();
+  function getTemplateContentsOwner(doc) {
+    if (!doc.defaultView) return doc;
+    var d = templateContentsOwnerTable.get(doc);
+    if (!d) {
+      d = doc.implementation.createHTMLDocument("");
+      while (d.lastChild) {
+        d.removeChild(d.lastChild);
+      }
+      templateContentsOwnerTable.set(doc, d);
+    }
+    return d;
+  }
+  function extractContent(templateElement) {
+    var doc = getTemplateContentsOwner(templateElement.ownerDocument);
+    var df = unwrap(doc.createDocumentFragment());
+    var child;
+    while (child = templateElement.firstChild) {
+      df.appendChild(child);
+    }
+    return df;
+  }
+  var OriginalHTMLTemplateElement = window.HTMLTemplateElement;
+  function HTMLTemplateElement(node) {
+    HTMLElement.call(this, node);
+    if (!OriginalHTMLTemplateElement) {
+      var content = extractContent(node);
+      contentTable.set(this, wrap(content));
+    }
+  }
+  HTMLTemplateElement.prototype = Object.create(HTMLElement.prototype);
+  mixin(HTMLTemplateElement.prototype, {
+    constructor: HTMLTemplateElement,
+    get content() {
+      if (OriginalHTMLTemplateElement) return wrap(unsafeUnwrap(this).content);
+      return contentTable.get(this);
+    }
+  });
+  if (OriginalHTMLTemplateElement) registerWrapper(OriginalHTMLTemplateElement, HTMLTemplateElement);
+  scope.wrappers.HTMLTemplateElement = HTMLTemplateElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var registerWrapper = scope.registerWrapper;
+  var OriginalHTMLMediaElement = window.HTMLMediaElement;
+  if (!OriginalHTMLMediaElement) return;
+  function HTMLMediaElement(node) {
+    HTMLElement.call(this, node);
+  }
+  HTMLMediaElement.prototype = Object.create(HTMLElement.prototype);
+  registerWrapper(OriginalHTMLMediaElement, HTMLMediaElement, document.createElement("audio"));
+  scope.wrappers.HTMLMediaElement = HTMLMediaElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLMediaElement = scope.wrappers.HTMLMediaElement;
+  var registerWrapper = scope.registerWrapper;
+  var unwrap = scope.unwrap;
+  var rewrap = scope.rewrap;
+  var OriginalHTMLAudioElement = window.HTMLAudioElement;
+  if (!OriginalHTMLAudioElement) return;
+  function HTMLAudioElement(node) {
+    HTMLMediaElement.call(this, node);
+  }
+  HTMLAudioElement.prototype = Object.create(HTMLMediaElement.prototype);
+  registerWrapper(OriginalHTMLAudioElement, HTMLAudioElement, document.createElement("audio"));
+  function Audio(src) {
+    if (!(this instanceof Audio)) {
+      throw new TypeError("DOM object constructor cannot be called as a function.");
+    }
+    var node = unwrap(document.createElement("audio"));
+    HTMLMediaElement.call(this, node);
+    rewrap(node, this);
+    node.setAttribute("preload", "auto");
+    if (src !== undefined) node.setAttribute("src", src);
+  }
+  Audio.prototype = HTMLAudioElement.prototype;
+  scope.wrappers.HTMLAudioElement = HTMLAudioElement;
+  scope.wrappers.Audio = Audio;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var rewrap = scope.rewrap;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var OriginalHTMLOptionElement = window.HTMLOptionElement;
+  function trimText(s) {
+    return s.replace(/\s+/g, " ").trim();
+  }
+  function HTMLOptionElement(node) {
+    HTMLElement.call(this, node);
+  }
+  HTMLOptionElement.prototype = Object.create(HTMLElement.prototype);
+  mixin(HTMLOptionElement.prototype, {
+    get text() {
+      return trimText(this.textContent);
+    },
+    set text(value) {
+      this.textContent = trimText(String(value));
+    },
+    get form() {
+      return wrap(unwrap(this).form);
+    }
+  });
+  registerWrapper(OriginalHTMLOptionElement, HTMLOptionElement, document.createElement("option"));
+  function Option(text, value, defaultSelected, selected) {
+    if (!(this instanceof Option)) {
+      throw new TypeError("DOM object constructor cannot be called as a function.");
+    }
+    var node = unwrap(document.createElement("option"));
+    HTMLElement.call(this, node);
+    rewrap(node, this);
+    if (text !== undefined) node.text = text;
+    if (value !== undefined) node.setAttribute("value", value);
+    if (defaultSelected === true) node.setAttribute("selected", "");
+    node.selected = selected === true;
+  }
+  Option.prototype = HTMLOptionElement.prototype;
+  scope.wrappers.HTMLOptionElement = HTMLOptionElement;
+  scope.wrappers.Option = Option;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var OriginalHTMLSelectElement = window.HTMLSelectElement;
+  function HTMLSelectElement(node) {
+    HTMLElement.call(this, node);
+  }
+  HTMLSelectElement.prototype = Object.create(HTMLElement.prototype);
+  mixin(HTMLSelectElement.prototype, {
+    add: function(element, before) {
+      if (typeof before === "object") before = unwrap(before);
+      unwrap(this).add(unwrap(element), before);
+    },
+    remove: function(indexOrNode) {
+      if (indexOrNode === undefined) {
+        HTMLElement.prototype.remove.call(this);
+        return;
+      }
+      if (typeof indexOrNode === "object") indexOrNode = unwrap(indexOrNode);
+      unwrap(this).remove(indexOrNode);
+    },
+    get form() {
+      return wrap(unwrap(this).form);
+    }
+  });
+  registerWrapper(OriginalHTMLSelectElement, HTMLSelectElement, document.createElement("select"));
+  scope.wrappers.HTMLSelectElement = HTMLSelectElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var wrapHTMLCollection = scope.wrapHTMLCollection;
+  var OriginalHTMLTableElement = window.HTMLTableElement;
+  function HTMLTableElement(node) {
+    HTMLElement.call(this, node);
+  }
+  HTMLTableElement.prototype = Object.create(HTMLElement.prototype);
+  mixin(HTMLTableElement.prototype, {
+    get caption() {
+      return wrap(unwrap(this).caption);
+    },
+    createCaption: function() {
+      return wrap(unwrap(this).createCaption());
+    },
+    get tHead() {
+      return wrap(unwrap(this).tHead);
+    },
+    createTHead: function() {
+      return wrap(unwrap(this).createTHead());
+    },
+    createTFoot: function() {
+      return wrap(unwrap(this).createTFoot());
+    },
+    get tFoot() {
+      return wrap(unwrap(this).tFoot);
+    },
+    get tBodies() {
+      return wrapHTMLCollection(unwrap(this).tBodies);
+    },
+    createTBody: function() {
+      return wrap(unwrap(this).createTBody());
+    },
+    get rows() {
+      return wrapHTMLCollection(unwrap(this).rows);
+    },
+    insertRow: function(index) {
+      return wrap(unwrap(this).insertRow(index));
+    }
+  });
+  registerWrapper(OriginalHTMLTableElement, HTMLTableElement, document.createElement("table"));
+  scope.wrappers.HTMLTableElement = HTMLTableElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var wrapHTMLCollection = scope.wrapHTMLCollection;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var OriginalHTMLTableSectionElement = window.HTMLTableSectionElement;
+  function HTMLTableSectionElement(node) {
+    HTMLElement.call(this, node);
+  }
+  HTMLTableSectionElement.prototype = Object.create(HTMLElement.prototype);
+  mixin(HTMLTableSectionElement.prototype, {
+    constructor: HTMLTableSectionElement,
+    get rows() {
+      return wrapHTMLCollection(unwrap(this).rows);
+    },
+    insertRow: function(index) {
+      return wrap(unwrap(this).insertRow(index));
+    }
+  });
+  registerWrapper(OriginalHTMLTableSectionElement, HTMLTableSectionElement, document.createElement("thead"));
+  scope.wrappers.HTMLTableSectionElement = HTMLTableSectionElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var wrapHTMLCollection = scope.wrapHTMLCollection;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var OriginalHTMLTableRowElement = window.HTMLTableRowElement;
+  function HTMLTableRowElement(node) {
+    HTMLElement.call(this, node);
+  }
+  HTMLTableRowElement.prototype = Object.create(HTMLElement.prototype);
+  mixin(HTMLTableRowElement.prototype, {
+    get cells() {
+      return wrapHTMLCollection(unwrap(this).cells);
+    },
+    insertCell: function(index) {
+      return wrap(unwrap(this).insertCell(index));
+    }
+  });
+  registerWrapper(OriginalHTMLTableRowElement, HTMLTableRowElement, document.createElement("tr"));
+  scope.wrappers.HTMLTableRowElement = HTMLTableRowElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLContentElement = scope.wrappers.HTMLContentElement;
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var HTMLShadowElement = scope.wrappers.HTMLShadowElement;
+  var HTMLTemplateElement = scope.wrappers.HTMLTemplateElement;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var OriginalHTMLUnknownElement = window.HTMLUnknownElement;
+  function HTMLUnknownElement(node) {
+    switch (node.localName) {
+     case "content":
+      return new HTMLContentElement(node);
+
+     case "shadow":
+      return new HTMLShadowElement(node);
+
+     case "template":
+      return new HTMLTemplateElement(node);
+    }
+    HTMLElement.call(this, node);
+  }
+  HTMLUnknownElement.prototype = Object.create(HTMLElement.prototype);
+  registerWrapper(OriginalHTMLUnknownElement, HTMLUnknownElement);
+  scope.wrappers.HTMLUnknownElement = HTMLUnknownElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var Element = scope.wrappers.Element;
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var registerObject = scope.registerObject;
+  var defineWrapGetter = scope.defineWrapGetter;
+  var SVG_NS = "http://www.w3.org/2000/svg";
+  var svgTitleElement = document.createElementNS(SVG_NS, "title");
+  var SVGTitleElement = registerObject(svgTitleElement);
+  var SVGElement = Object.getPrototypeOf(SVGTitleElement.prototype).constructor;
+  if (!("classList" in svgTitleElement)) {
+    var descr = Object.getOwnPropertyDescriptor(Element.prototype, "classList");
+    Object.defineProperty(HTMLElement.prototype, "classList", descr);
+    delete Element.prototype.classList;
+  }
+  defineWrapGetter(SVGElement, "ownerSVGElement");
+  scope.wrappers.SVGElement = SVGElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var OriginalSVGUseElement = window.SVGUseElement;
+  var SVG_NS = "http://www.w3.org/2000/svg";
+  var gWrapper = wrap(document.createElementNS(SVG_NS, "g"));
+  var useElement = document.createElementNS(SVG_NS, "use");
+  var SVGGElement = gWrapper.constructor;
+  var parentInterfacePrototype = Object.getPrototypeOf(SVGGElement.prototype);
+  var parentInterface = parentInterfacePrototype.constructor;
+  function SVGUseElement(impl) {
+    parentInterface.call(this, impl);
+  }
+  SVGUseElement.prototype = Object.create(parentInterfacePrototype);
+  if ("instanceRoot" in useElement) {
+    mixin(SVGUseElement.prototype, {
+      get instanceRoot() {
+        return wrap(unwrap(this).instanceRoot);
+      },
+      get animatedInstanceRoot() {
+        return wrap(unwrap(this).animatedInstanceRoot);
+      }
+    });
+  }
+  registerWrapper(OriginalSVGUseElement, SVGUseElement, useElement);
+  scope.wrappers.SVGUseElement = SVGUseElement;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var EventTarget = scope.wrappers.EventTarget;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var wrap = scope.wrap;
+  var OriginalSVGElementInstance = window.SVGElementInstance;
+  if (!OriginalSVGElementInstance) return;
+  function SVGElementInstance(impl) {
+    EventTarget.call(this, impl);
+  }
+  SVGElementInstance.prototype = Object.create(EventTarget.prototype);
+  mixin(SVGElementInstance.prototype, {
+    get correspondingElement() {
+      return wrap(unsafeUnwrap(this).correspondingElement);
+    },
+    get correspondingUseElement() {
+      return wrap(unsafeUnwrap(this).correspondingUseElement);
+    },
+    get parentNode() {
+      return wrap(unsafeUnwrap(this).parentNode);
+    },
+    get childNodes() {
+      throw new Error("Not implemented");
+    },
+    get firstChild() {
+      return wrap(unsafeUnwrap(this).firstChild);
+    },
+    get lastChild() {
+      return wrap(unsafeUnwrap(this).lastChild);
+    },
+    get previousSibling() {
+      return wrap(unsafeUnwrap(this).previousSibling);
+    },
+    get nextSibling() {
+      return wrap(unsafeUnwrap(this).nextSibling);
+    }
+  });
+  registerWrapper(OriginalSVGElementInstance, SVGElementInstance);
+  scope.wrappers.SVGElementInstance = SVGElementInstance;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var setWrapper = scope.setWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var unwrap = scope.unwrap;
+  var unwrapIfNeeded = scope.unwrapIfNeeded;
+  var wrap = scope.wrap;
+  var OriginalCanvasRenderingContext2D = window.CanvasRenderingContext2D;
+  function CanvasRenderingContext2D(impl) {
+    setWrapper(impl, this);
+  }
+  mixin(CanvasRenderingContext2D.prototype, {
+    get canvas() {
+      return wrap(unsafeUnwrap(this).canvas);
+    },
+    drawImage: function() {
+      arguments[0] = unwrapIfNeeded(arguments[0]);
+      unsafeUnwrap(this).drawImage.apply(unsafeUnwrap(this), arguments);
+    },
+    createPattern: function() {
+      arguments[0] = unwrap(arguments[0]);
+      return unsafeUnwrap(this).createPattern.apply(unsafeUnwrap(this), arguments);
+    }
+  });
+  registerWrapper(OriginalCanvasRenderingContext2D, CanvasRenderingContext2D, document.createElement("canvas").getContext("2d"));
+  scope.wrappers.CanvasRenderingContext2D = CanvasRenderingContext2D;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var setWrapper = scope.setWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var unwrapIfNeeded = scope.unwrapIfNeeded;
+  var wrap = scope.wrap;
+  var OriginalWebGLRenderingContext = window.WebGLRenderingContext;
+  if (!OriginalWebGLRenderingContext) return;
+  function WebGLRenderingContext(impl) {
+    setWrapper(impl, this);
+  }
+  mixin(WebGLRenderingContext.prototype, {
+    get canvas() {
+      return wrap(unsafeUnwrap(this).canvas);
+    },
+    texImage2D: function() {
+      arguments[5] = unwrapIfNeeded(arguments[5]);
+      unsafeUnwrap(this).texImage2D.apply(unsafeUnwrap(this), arguments);
+    },
+    texSubImage2D: function() {
+      arguments[6] = unwrapIfNeeded(arguments[6]);
+      unsafeUnwrap(this).texSubImage2D.apply(unsafeUnwrap(this), arguments);
+    }
+  });
+  var instanceProperties = /WebKit/.test(navigator.userAgent) ? {
+    drawingBufferHeight: null,
+    drawingBufferWidth: null
+  } : {};
+  registerWrapper(OriginalWebGLRenderingContext, WebGLRenderingContext, instanceProperties);
+  scope.wrappers.WebGLRenderingContext = WebGLRenderingContext;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var registerWrapper = scope.registerWrapper;
+  var setWrapper = scope.setWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var unwrap = scope.unwrap;
+  var unwrapIfNeeded = scope.unwrapIfNeeded;
+  var wrap = scope.wrap;
+  var OriginalRange = window.Range;
+  function Range(impl) {
+    setWrapper(impl, this);
+  }
+  Range.prototype = {
+    get startContainer() {
+      return wrap(unsafeUnwrap(this).startContainer);
+    },
+    get endContainer() {
+      return wrap(unsafeUnwrap(this).endContainer);
+    },
+    get commonAncestorContainer() {
+      return wrap(unsafeUnwrap(this).commonAncestorContainer);
+    },
+    setStart: function(refNode, offset) {
+      unsafeUnwrap(this).setStart(unwrapIfNeeded(refNode), offset);
+    },
+    setEnd: function(refNode, offset) {
+      unsafeUnwrap(this).setEnd(unwrapIfNeeded(refNode), offset);
+    },
+    setStartBefore: function(refNode) {
+      unsafeUnwrap(this).setStartBefore(unwrapIfNeeded(refNode));
+    },
+    setStartAfter: function(refNode) {
+      unsafeUnwrap(this).setStartAfter(unwrapIfNeeded(refNode));
+    },
+    setEndBefore: function(refNode) {
+      unsafeUnwrap(this).setEndBefore(unwrapIfNeeded(refNode));
+    },
+    setEndAfter: function(refNode) {
+      unsafeUnwrap(this).setEndAfter(unwrapIfNeeded(refNode));
+    },
+    selectNode: function(refNode) {
+      unsafeUnwrap(this).selectNode(unwrapIfNeeded(refNode));
+    },
+    selectNodeContents: function(refNode) {
+      unsafeUnwrap(this).selectNodeContents(unwrapIfNeeded(refNode));
+    },
+    compareBoundaryPoints: function(how, sourceRange) {
+      return unsafeUnwrap(this).compareBoundaryPoints(how, unwrap(sourceRange));
+    },
+    extractContents: function() {
+      return wrap(unsafeUnwrap(this).extractContents());
+    },
+    cloneContents: function() {
+      return wrap(unsafeUnwrap(this).cloneContents());
+    },
+    insertNode: function(node) {
+      unsafeUnwrap(this).insertNode(unwrapIfNeeded(node));
+    },
+    surroundContents: function(newParent) {
+      unsafeUnwrap(this).surroundContents(unwrapIfNeeded(newParent));
+    },
+    cloneRange: function() {
+      return wrap(unsafeUnwrap(this).cloneRange());
+    },
+    isPointInRange: function(node, offset) {
+      return unsafeUnwrap(this).isPointInRange(unwrapIfNeeded(node), offset);
+    },
+    comparePoint: function(node, offset) {
+      return unsafeUnwrap(this).comparePoint(unwrapIfNeeded(node), offset);
+    },
+    intersectsNode: function(node) {
+      return unsafeUnwrap(this).intersectsNode(unwrapIfNeeded(node));
+    },
+    toString: function() {
+      return unsafeUnwrap(this).toString();
+    }
+  };
+  if (OriginalRange.prototype.createContextualFragment) {
+    Range.prototype.createContextualFragment = function(html) {
+      return wrap(unsafeUnwrap(this).createContextualFragment(html));
+    };
+  }
+  registerWrapper(window.Range, Range, document.createRange());
+  scope.wrappers.Range = Range;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var GetElementsByInterface = scope.GetElementsByInterface;
+  var ParentNodeInterface = scope.ParentNodeInterface;
+  var SelectorsInterface = scope.SelectorsInterface;
+  var mixin = scope.mixin;
+  var registerObject = scope.registerObject;
+  var DocumentFragment = registerObject(document.createDocumentFragment());
+  mixin(DocumentFragment.prototype, ParentNodeInterface);
+  mixin(DocumentFragment.prototype, SelectorsInterface);
+  mixin(DocumentFragment.prototype, GetElementsByInterface);
+  var Comment = registerObject(document.createComment(""));
+  scope.wrappers.Comment = Comment;
+  scope.wrappers.DocumentFragment = DocumentFragment;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var DocumentFragment = scope.wrappers.DocumentFragment;
+  var TreeScope = scope.TreeScope;
+  var elementFromPoint = scope.elementFromPoint;
+  var getInnerHTML = scope.getInnerHTML;
+  var getTreeScope = scope.getTreeScope;
+  var mixin = scope.mixin;
+  var rewrap = scope.rewrap;
+  var setInnerHTML = scope.setInnerHTML;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var unwrap = scope.unwrap;
+  var shadowHostTable = new WeakMap();
+  var nextOlderShadowTreeTable = new WeakMap();
+  var spaceCharRe = /[ \t\n\r\f]/;
+  function ShadowRoot(hostWrapper) {
+    var node = unwrap(unsafeUnwrap(hostWrapper).ownerDocument.createDocumentFragment());
+    DocumentFragment.call(this, node);
+    rewrap(node, this);
+    var oldShadowRoot = hostWrapper.shadowRoot;
+    nextOlderShadowTreeTable.set(this, oldShadowRoot);
+    this.treeScope_ = new TreeScope(this, getTreeScope(oldShadowRoot || hostWrapper));
+    shadowHostTable.set(this, hostWrapper);
+  }
+  ShadowRoot.prototype = Object.create(DocumentFragment.prototype);
+  mixin(ShadowRoot.prototype, {
+    constructor: ShadowRoot,
+    get innerHTML() {
+      return getInnerHTML(this);
+    },
+    set innerHTML(value) {
+      setInnerHTML(this, value);
+      this.invalidateShadowRenderer();
+    },
+    get olderShadowRoot() {
+      return nextOlderShadowTreeTable.get(this) || null;
+    },
+    get host() {
+      return shadowHostTable.get(this) || null;
+    },
+    invalidateShadowRenderer: function() {
+      return shadowHostTable.get(this).invalidateShadowRenderer();
+    },
+    elementFromPoint: function(x, y) {
+      return elementFromPoint(this, this.ownerDocument, x, y);
+    },
+    getElementById: function(id) {
+      if (spaceCharRe.test(id)) return null;
+      return this.querySelector('[id="' + id + '"]');
+    }
+  });
+  scope.wrappers.ShadowRoot = ShadowRoot;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var Element = scope.wrappers.Element;
+  var HTMLContentElement = scope.wrappers.HTMLContentElement;
+  var HTMLShadowElement = scope.wrappers.HTMLShadowElement;
+  var Node = scope.wrappers.Node;
+  var ShadowRoot = scope.wrappers.ShadowRoot;
+  var assert = scope.assert;
+  var getTreeScope = scope.getTreeScope;
+  var mixin = scope.mixin;
+  var oneOf = scope.oneOf;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var ArraySplice = scope.ArraySplice;
+  function updateWrapperUpAndSideways(wrapper) {
+    wrapper.previousSibling_ = wrapper.previousSibling;
+    wrapper.nextSibling_ = wrapper.nextSibling;
+    wrapper.parentNode_ = wrapper.parentNode;
+  }
+  function updateWrapperDown(wrapper) {
+    wrapper.firstChild_ = wrapper.firstChild;
+    wrapper.lastChild_ = wrapper.lastChild;
+  }
+  function updateAllChildNodes(parentNodeWrapper) {
+    assert(parentNodeWrapper instanceof Node);
+    for (var childWrapper = parentNodeWrapper.firstChild; childWrapper; childWrapper = childWrapper.nextSibling) {
+      updateWrapperUpAndSideways(childWrapper);
+    }
+    updateWrapperDown(parentNodeWrapper);
+  }
+  function insertBefore(parentNodeWrapper, newChildWrapper, refChildWrapper) {
+    var parentNode = unwrap(parentNodeWrapper);
+    var newChild = unwrap(newChildWrapper);
+    var refChild = refChildWrapper ? unwrap(refChildWrapper) : null;
+    remove(newChildWrapper);
+    updateWrapperUpAndSideways(newChildWrapper);
+    if (!refChildWrapper) {
+      parentNodeWrapper.lastChild_ = parentNodeWrapper.lastChild;
+      if (parentNodeWrapper.lastChild === parentNodeWrapper.firstChild) parentNodeWrapper.firstChild_ = parentNodeWrapper.firstChild;
+      var lastChildWrapper = wrap(parentNode.lastChild);
+      if (lastChildWrapper) lastChildWrapper.nextSibling_ = lastChildWrapper.nextSibling;
+    } else {
+      if (parentNodeWrapper.firstChild === refChildWrapper) parentNodeWrapper.firstChild_ = refChildWrapper;
+      refChildWrapper.previousSibling_ = refChildWrapper.previousSibling;
+    }
+    scope.originalInsertBefore.call(parentNode, newChild, refChild);
+  }
+  function remove(nodeWrapper) {
+    var node = unwrap(nodeWrapper);
+    var parentNode = node.parentNode;
+    if (!parentNode) return;
+    var parentNodeWrapper = wrap(parentNode);
+    updateWrapperUpAndSideways(nodeWrapper);
+    if (nodeWrapper.previousSibling) nodeWrapper.previousSibling.nextSibling_ = nodeWrapper;
+    if (nodeWrapper.nextSibling) nodeWrapper.nextSibling.previousSibling_ = nodeWrapper;
+    if (parentNodeWrapper.lastChild === nodeWrapper) parentNodeWrapper.lastChild_ = nodeWrapper;
+    if (parentNodeWrapper.firstChild === nodeWrapper) parentNodeWrapper.firstChild_ = nodeWrapper;
+    scope.originalRemoveChild.call(parentNode, node);
+  }
+  var distributedNodesTable = new WeakMap();
+  var destinationInsertionPointsTable = new WeakMap();
+  var rendererForHostTable = new WeakMap();
+  function resetDistributedNodes(insertionPoint) {
+    distributedNodesTable.set(insertionPoint, []);
+  }
+  function getDistributedNodes(insertionPoint) {
+    var rv = distributedNodesTable.get(insertionPoint);
+    if (!rv) distributedNodesTable.set(insertionPoint, rv = []);
+    return rv;
+  }
+  function getChildNodesSnapshot(node) {
+    var result = [], i = 0;
+    for (var child = node.firstChild; child; child = child.nextSibling) {
+      result[i++] = child;
+    }
+    return result;
+  }
+  var request = oneOf(window, [ "requestAnimationFrame", "mozRequestAnimationFrame", "webkitRequestAnimationFrame", "setTimeout" ]);
+  var pendingDirtyRenderers = [];
+  var renderTimer;
+  function renderAllPending() {
+    for (var i = 0; i < pendingDirtyRenderers.length; i++) {
+      var renderer = pendingDirtyRenderers[i];
+      var parentRenderer = renderer.parentRenderer;
+      if (parentRenderer && parentRenderer.dirty) continue;
+      renderer.render();
+    }
+    pendingDirtyRenderers = [];
+  }
+  function handleRequestAnimationFrame() {
+    renderTimer = null;
+    renderAllPending();
+  }
+  function getRendererForHost(host) {
+    var renderer = rendererForHostTable.get(host);
+    if (!renderer) {
+      renderer = new ShadowRenderer(host);
+      rendererForHostTable.set(host, renderer);
+    }
+    return renderer;
+  }
+  function getShadowRootAncestor(node) {
+    var root = getTreeScope(node).root;
+    if (root instanceof ShadowRoot) return root;
+    return null;
+  }
+  function getRendererForShadowRoot(shadowRoot) {
+    return getRendererForHost(shadowRoot.host);
+  }
+  var spliceDiff = new ArraySplice();
+  spliceDiff.equals = function(renderNode, rawNode) {
+    return unwrap(renderNode.node) === rawNode;
+  };
+  function RenderNode(node) {
+    this.skip = false;
+    this.node = node;
+    this.childNodes = [];
+  }
+  RenderNode.prototype = {
+    append: function(node) {
+      var rv = new RenderNode(node);
+      this.childNodes.push(rv);
+      return rv;
+    },
+    sync: function(opt_added) {
+      if (this.skip) return;
+      var nodeWrapper = this.node;
+      var newChildren = this.childNodes;
+      var oldChildren = getChildNodesSnapshot(unwrap(nodeWrapper));
+      var added = opt_added || new WeakMap();
+      var splices = spliceDiff.calculateSplices(newChildren, oldChildren);
+      var newIndex = 0, oldIndex = 0;
+      var lastIndex = 0;
+      for (var i = 0; i < splices.length; i++) {
+        var splice = splices[i];
+        for (;lastIndex < splice.index; lastIndex++) {
+          oldIndex++;
+          newChildren[newIndex++].sync(added);
+        }
+        var removedCount = splice.removed.length;
+        for (var j = 0; j < removedCount; j++) {
+          var wrapper = wrap(oldChildren[oldIndex++]);
+          if (!added.get(wrapper)) remove(wrapper);
+        }
+        var addedCount = splice.addedCount;
+        var refNode = oldChildren[oldIndex] && wrap(oldChildren[oldIndex]);
+        for (var j = 0; j < addedCount; j++) {
+          var newChildRenderNode = newChildren[newIndex++];
+          var newChildWrapper = newChildRenderNode.node;
+          insertBefore(nodeWrapper, newChildWrapper, refNode);
+          added.set(newChildWrapper, true);
+          newChildRenderNode.sync(added);
+        }
+        lastIndex += addedCount;
+      }
+      for (var i = lastIndex; i < newChildren.length; i++) {
+        newChildren[i].sync(added);
+      }
+    }
+  };
+  function ShadowRenderer(host) {
+    this.host = host;
+    this.dirty = false;
+    this.invalidateAttributes();
+    this.associateNode(host);
+  }
+  ShadowRenderer.prototype = {
+    render: function(opt_renderNode) {
+      if (!this.dirty) return;
+      this.invalidateAttributes();
+      var host = this.host;
+      this.distribution(host);
+      var renderNode = opt_renderNode || new RenderNode(host);
+      this.buildRenderTree(renderNode, host);
+      var topMostRenderer = !opt_renderNode;
+      if (topMostRenderer) renderNode.sync();
+      this.dirty = false;
+    },
+    get parentRenderer() {
+      return getTreeScope(this.host).renderer;
+    },
+    invalidate: function() {
+      if (!this.dirty) {
+        this.dirty = true;
+        var parentRenderer = this.parentRenderer;
+        if (parentRenderer) parentRenderer.invalidate();
+        pendingDirtyRenderers.push(this);
+        if (renderTimer) return;
+        renderTimer = window[request](handleRequestAnimationFrame, 0);
+      }
+    },
+    distribution: function(root) {
+      this.resetAllSubtrees(root);
+      this.distributionResolution(root);
+    },
+    resetAll: function(node) {
+      if (isInsertionPoint(node)) resetDistributedNodes(node); else resetDestinationInsertionPoints(node);
+      this.resetAllSubtrees(node);
+    },
+    resetAllSubtrees: function(node) {
+      for (var child = node.firstChild; child; child = child.nextSibling) {
+        this.resetAll(child);
+      }
+      if (node.shadowRoot) this.resetAll(node.shadowRoot);
+      if (node.olderShadowRoot) this.resetAll(node.olderShadowRoot);
+    },
+    distributionResolution: function(node) {
+      if (isShadowHost(node)) {
+        var shadowHost = node;
+        var pool = poolPopulation(shadowHost);
+        var shadowTrees = getShadowTrees(shadowHost);
+        for (var i = 0; i < shadowTrees.length; i++) {
+          this.poolDistribution(shadowTrees[i], pool);
+        }
+        for (var i = shadowTrees.length - 1; i >= 0; i--) {
+          var shadowTree = shadowTrees[i];
+          var shadow = getShadowInsertionPoint(shadowTree);
+          if (shadow) {
+            var olderShadowRoot = shadowTree.olderShadowRoot;
+            if (olderShadowRoot) {
+              pool = poolPopulation(olderShadowRoot);
+            }
+            for (var j = 0; j < pool.length; j++) {
+              destributeNodeInto(pool[j], shadow);
+            }
+          }
+          this.distributionResolution(shadowTree);
+        }
+      }
+      for (var child = node.firstChild; child; child = child.nextSibling) {
+        this.distributionResolution(child);
+      }
+    },
+    poolDistribution: function(node, pool) {
+      if (node instanceof HTMLShadowElement) return;
+      if (node instanceof HTMLContentElement) {
+        var content = node;
+        this.updateDependentAttributes(content.getAttribute("select"));
+        var anyDistributed = false;
+        for (var i = 0; i < pool.length; i++) {
+          var node = pool[i];
+          if (!node) continue;
+          if (matches(node, content)) {
+            destributeNodeInto(node, content);
+            pool[i] = undefined;
+            anyDistributed = true;
+          }
+        }
+        if (!anyDistributed) {
+          for (var child = content.firstChild; child; child = child.nextSibling) {
+            destributeNodeInto(child, content);
+          }
+        }
+        return;
+      }
+      for (var child = node.firstChild; child; child = child.nextSibling) {
+        this.poolDistribution(child, pool);
+      }
+    },
+    buildRenderTree: function(renderNode, node) {
+      var children = this.compose(node);
+      for (var i = 0; i < children.length; i++) {
+        var child = children[i];
+        var childRenderNode = renderNode.append(child);
+        this.buildRenderTree(childRenderNode, child);
+      }
+      if (isShadowHost(node)) {
+        var renderer = getRendererForHost(node);
+        renderer.dirty = false;
+      }
+    },
+    compose: function(node) {
+      var children = [];
+      var p = node.shadowRoot || node;
+      for (var child = p.firstChild; child; child = child.nextSibling) {
+        if (isInsertionPoint(child)) {
+          this.associateNode(p);
+          var distributedNodes = getDistributedNodes(child);
+          for (var j = 0; j < distributedNodes.length; j++) {
+            var distributedNode = distributedNodes[j];
+            if (isFinalDestination(child, distributedNode)) children.push(distributedNode);
+          }
+        } else {
+          children.push(child);
+        }
+      }
+      return children;
+    },
+    invalidateAttributes: function() {
+      this.attributes = Object.create(null);
+    },
+    updateDependentAttributes: function(selector) {
+      if (!selector) return;
+      var attributes = this.attributes;
+      if (/\.\w+/.test(selector)) attributes["class"] = true;
+      if (/#\w+/.test(selector)) attributes["id"] = true;
+      selector.replace(/\[\s*([^\s=\|~\]]+)/g, function(_, name) {
+        attributes[name] = true;
+      });
+    },
+    dependsOnAttribute: function(name) {
+      return this.attributes[name];
+    },
+    associateNode: function(node) {
+      unsafeUnwrap(node).polymerShadowRenderer_ = this;
+    }
+  };
+  function poolPopulation(node) {
+    var pool = [];
+    for (var child = node.firstChild; child; child = child.nextSibling) {
+      if (isInsertionPoint(child)) {
+        pool.push.apply(pool, getDistributedNodes(child));
+      } else {
+        pool.push(child);
+      }
+    }
+    return pool;
+  }
+  function getShadowInsertionPoint(node) {
+    if (node instanceof HTMLShadowElement) return node;
+    if (node instanceof HTMLContentElement) return null;
+    for (var child = node.firstChild; child; child = child.nextSibling) {
+      var res = getShadowInsertionPoint(child);
+      if (res) return res;
+    }
+    return null;
+  }
+  function destributeNodeInto(child, insertionPoint) {
+    getDistributedNodes(insertionPoint).push(child);
+    var points = destinationInsertionPointsTable.get(child);
+    if (!points) destinationInsertionPointsTable.set(child, [ insertionPoint ]); else points.push(insertionPoint);
+  }
+  function getDestinationInsertionPoints(node) {
+    return destinationInsertionPointsTable.get(node);
+  }
+  function resetDestinationInsertionPoints(node) {
+    destinationInsertionPointsTable.set(node, undefined);
+  }
+  var selectorStartCharRe = /^(:not\()?[*.#[a-zA-Z_|]/;
+  function matches(node, contentElement) {
+    var select = contentElement.getAttribute("select");
+    if (!select) return true;
+    select = select.trim();
+    if (!select) return true;
+    if (!(node instanceof Element)) return false;
+    if (!selectorStartCharRe.test(select)) return false;
+    try {
+      return node.matches(select);
+    } catch (ex) {
+      return false;
+    }
+  }
+  function isFinalDestination(insertionPoint, node) {
+    var points = getDestinationInsertionPoints(node);
+    return points && points[points.length - 1] === insertionPoint;
+  }
+  function isInsertionPoint(node) {
+    return node instanceof HTMLContentElement || node instanceof HTMLShadowElement;
+  }
+  function isShadowHost(shadowHost) {
+    return shadowHost.shadowRoot;
+  }
+  function getShadowTrees(host) {
+    var trees = [];
+    for (var tree = host.shadowRoot; tree; tree = tree.olderShadowRoot) {
+      trees.push(tree);
+    }
+    return trees;
+  }
+  function render(host) {
+    new ShadowRenderer(host).render();
+  }
+  Node.prototype.invalidateShadowRenderer = function(force) {
+    var renderer = unsafeUnwrap(this).polymerShadowRenderer_;
+    if (renderer) {
+      renderer.invalidate();
+      return true;
+    }
+    return false;
+  };
+  HTMLContentElement.prototype.getDistributedNodes = HTMLShadowElement.prototype.getDistributedNodes = function() {
+    renderAllPending();
+    return getDistributedNodes(this);
+  };
+  Element.prototype.getDestinationInsertionPoints = function() {
+    renderAllPending();
+    return getDestinationInsertionPoints(this) || [];
+  };
+  HTMLContentElement.prototype.nodeIsInserted_ = HTMLShadowElement.prototype.nodeIsInserted_ = function() {
+    this.invalidateShadowRenderer();
+    var shadowRoot = getShadowRootAncestor(this);
+    var renderer;
+    if (shadowRoot) renderer = getRendererForShadowRoot(shadowRoot);
+    unsafeUnwrap(this).polymerShadowRenderer_ = renderer;
+    if (renderer) renderer.invalidate();
+  };
+  scope.getRendererForHost = getRendererForHost;
+  scope.getShadowTrees = getShadowTrees;
+  scope.renderAllPending = renderAllPending;
+  scope.getDestinationInsertionPoints = getDestinationInsertionPoints;
+  scope.visual = {
+    insertBefore: insertBefore,
+    remove: remove
+  };
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var HTMLElement = scope.wrappers.HTMLElement;
+  var assert = scope.assert;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var elementsWithFormProperty = [ "HTMLButtonElement", "HTMLFieldSetElement", "HTMLInputElement", "HTMLKeygenElement", "HTMLLabelElement", "HTMLLegendElement", "HTMLObjectElement", "HTMLOutputElement", "HTMLTextAreaElement" ];
+  function createWrapperConstructor(name) {
+    if (!window[name]) return;
+    assert(!scope.wrappers[name]);
+    var GeneratedWrapper = function(node) {
+      HTMLElement.call(this, node);
+    };
+    GeneratedWrapper.prototype = Object.create(HTMLElement.prototype);
+    mixin(GeneratedWrapper.prototype, {
+      get form() {
+        return wrap(unwrap(this).form);
+      }
+    });
+    registerWrapper(window[name], GeneratedWrapper, document.createElement(name.slice(4, -7)));
+    scope.wrappers[name] = GeneratedWrapper;
+  }
+  elementsWithFormProperty.forEach(createWrapperConstructor);
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var registerWrapper = scope.registerWrapper;
+  var setWrapper = scope.setWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var unwrap = scope.unwrap;
+  var unwrapIfNeeded = scope.unwrapIfNeeded;
+  var wrap = scope.wrap;
+  var OriginalSelection = window.Selection;
+  function Selection(impl) {
+    setWrapper(impl, this);
+  }
+  Selection.prototype = {
+    get anchorNode() {
+      return wrap(unsafeUnwrap(this).anchorNode);
+    },
+    get focusNode() {
+      return wrap(unsafeUnwrap(this).focusNode);
+    },
+    addRange: function(range) {
+      unsafeUnwrap(this).addRange(unwrap(range));
+    },
+    collapse: function(node, index) {
+      unsafeUnwrap(this).collapse(unwrapIfNeeded(node), index);
+    },
+    containsNode: function(node, allowPartial) {
+      return unsafeUnwrap(this).containsNode(unwrapIfNeeded(node), allowPartial);
+    },
+    extend: function(node, offset) {
+      unsafeUnwrap(this).extend(unwrapIfNeeded(node), offset);
+    },
+    getRangeAt: function(index) {
+      return wrap(unsafeUnwrap(this).getRangeAt(index));
+    },
+    removeRange: function(range) {
+      unsafeUnwrap(this).removeRange(unwrap(range));
+    },
+    selectAllChildren: function(node) {
+      unsafeUnwrap(this).selectAllChildren(unwrapIfNeeded(node));
+    },
+    toString: function() {
+      return unsafeUnwrap(this).toString();
+    }
+  };
+  registerWrapper(window.Selection, Selection, window.getSelection());
+  scope.wrappers.Selection = Selection;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var GetElementsByInterface = scope.GetElementsByInterface;
+  var Node = scope.wrappers.Node;
+  var ParentNodeInterface = scope.ParentNodeInterface;
+  var Selection = scope.wrappers.Selection;
+  var SelectorsInterface = scope.SelectorsInterface;
+  var ShadowRoot = scope.wrappers.ShadowRoot;
+  var TreeScope = scope.TreeScope;
+  var cloneNode = scope.cloneNode;
+  var defineWrapGetter = scope.defineWrapGetter;
+  var elementFromPoint = scope.elementFromPoint;
+  var forwardMethodsToWrapper = scope.forwardMethodsToWrapper;
+  var matchesNames = scope.matchesNames;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var renderAllPending = scope.renderAllPending;
+  var rewrap = scope.rewrap;
+  var setWrapper = scope.setWrapper;
+  var unsafeUnwrap = scope.unsafeUnwrap;
+  var unwrap = scope.unwrap;
+  var wrap = scope.wrap;
+  var wrapEventTargetMethods = scope.wrapEventTargetMethods;
+  var wrapNodeList = scope.wrapNodeList;
+  var implementationTable = new WeakMap();
+  function Document(node) {
+    Node.call(this, node);
+    this.treeScope_ = new TreeScope(this, null);
+  }
+  Document.prototype = Object.create(Node.prototype);
+  defineWrapGetter(Document, "documentElement");
+  defineWrapGetter(Document, "body");
+  defineWrapGetter(Document, "head");
+  function wrapMethod(name) {
+    var original = document[name];
+    Document.prototype[name] = function() {
+      return wrap(original.apply(unsafeUnwrap(this), arguments));
+    };
+  }
+  [ "createComment", "createDocumentFragment", "createElement", "createElementNS", "createEvent", "createEventNS", "createRange", "createTextNode", "getElementById" ].forEach(wrapMethod);
+  var originalAdoptNode = document.adoptNode;
+  function adoptNodeNoRemove(node, doc) {
+    originalAdoptNode.call(unsafeUnwrap(doc), unwrap(node));
+    adoptSubtree(node, doc);
+  }
+  function adoptSubtree(node, doc) {
+    if (node.shadowRoot) doc.adoptNode(node.shadowRoot);
+    if (node instanceof ShadowRoot) adoptOlderShadowRoots(node, doc);
+    for (var child = node.firstChild; child; child = child.nextSibling) {
+      adoptSubtree(child, doc);
+    }
+  }
+  function adoptOlderShadowRoots(shadowRoot, doc) {
+    var oldShadowRoot = shadowRoot.olderShadowRoot;
+    if (oldShadowRoot) doc.adoptNode(oldShadowRoot);
+  }
+  var originalGetSelection = document.getSelection;
+  mixin(Document.prototype, {
+    adoptNode: function(node) {
+      if (node.parentNode) node.parentNode.removeChild(node);
+      adoptNodeNoRemove(node, this);
+      return node;
+    },
+    elementFromPoint: function(x, y) {
+      return elementFromPoint(this, this, x, y);
+    },
+    importNode: function(node, deep) {
+      return cloneNode(node, deep, unsafeUnwrap(this));
+    },
+    getSelection: function() {
+      renderAllPending();
+      return new Selection(originalGetSelection.call(unwrap(this)));
+    },
+    getElementsByName: function(name) {
+      return SelectorsInterface.querySelectorAll.call(this, "[name=" + JSON.stringify(String(name)) + "]");
+    }
+  });
+  if (document.registerElement) {
+    var originalRegisterElement = document.registerElement;
+    Document.prototype.registerElement = function(tagName, object) {
+      var prototype, extendsOption;
+      if (object !== undefined) {
+        prototype = object.prototype;
+        extendsOption = object.extends;
+      }
+      if (!prototype) prototype = Object.create(HTMLElement.prototype);
+      if (scope.nativePrototypeTable.get(prototype)) {
+        throw new Error("NotSupportedError");
+      }
+      var proto = Object.getPrototypeOf(prototype);
+      var nativePrototype;
+      var prototypes = [];
+      while (proto) {
+        nativePrototype = scope.nativePrototypeTable.get(proto);
+        if (nativePrototype) break;
+        prototypes.push(proto);
+        proto = Object.getPrototypeOf(proto);
+      }
+      if (!nativePrototype) {
+        throw new Error("NotSupportedError");
+      }
+      var newPrototype = Object.create(nativePrototype);
+      for (var i = prototypes.length - 1; i >= 0; i--) {
+        newPrototype = Object.create(newPrototype);
+      }
+      [ "createdCallback", "attachedCallback", "detachedCallback", "attributeChangedCallback" ].forEach(function(name) {
+        var f = prototype[name];
+        if (!f) return;
+        newPrototype[name] = function() {
+          if (!(wrap(this) instanceof CustomElementConstructor)) {
+            rewrap(this);
+          }
+          f.apply(wrap(this), arguments);
+        };
+      });
+      var p = {
+        prototype: newPrototype
+      };
+      if (extendsOption) p.extends = extendsOption;
+      function CustomElementConstructor(node) {
+        if (!node) {
+          if (extendsOption) {
+            return document.createElement(extendsOption, tagName);
+          } else {
+            return document.createElement(tagName);
+          }
+        }
+        setWrapper(node, this);
+      }
+      CustomElementConstructor.prototype = prototype;
+      CustomElementConstructor.prototype.constructor = CustomElementConstructor;
+      scope.constructorTable.set(newPrototype, CustomElementConstructor);
+      scope.nativePrototypeTable.set(prototype, newPrototype);
+      var nativeConstructor = originalRegisterElement.call(unwrap(this), tagName, p);
+      return CustomElementConstructor;
+    };
+    forwardMethodsToWrapper([ window.HTMLDocument || window.Document ], [ "registerElement" ]);
+  }
+  forwardMethodsToWrapper([ window.HTMLBodyElement, window.HTMLDocument || window.Document, window.HTMLHeadElement, window.HTMLHtmlElement ], [ "appendChild", "compareDocumentPosition", "contains", "getElementsByClassName", "getElementsByTagName", "getElementsByTagNameNS", "insertBefore", "querySelector", "querySelectorAll", "removeChild", "replaceChild" ]);
+  forwardMethodsToWrapper([ window.HTMLBodyElement, window.HTMLHeadElement, window.HTMLHtmlElement ], matchesNames);
+  forwardMethodsToWrapper([ window.HTMLDocument || window.Document ], [ "adoptNode", "importNode", "contains", "createComment", "createDocumentFragment", "createElement", "createElementNS", "createEvent", "createEventNS", "createRange", "createTextNode", "elementFromPoint", "getElementById", "getElementsByName", "getSelection" ]);
+  mixin(Document.prototype, GetElementsByInterface);
+  mixin(Document.prototype, ParentNodeInterface);
+  mixin(Document.prototype, SelectorsInterface);
+  mixin(Document.prototype, {
+    get implementation() {
+      var implementation = implementationTable.get(this);
+      if (implementation) return implementation;
+      implementation = new DOMImplementation(unwrap(this).implementation);
+      implementationTable.set(this, implementation);
+      return implementation;
+    },
+    get defaultView() {
+      return wrap(unwrap(this).defaultView);
+    }
+  });
+  registerWrapper(window.Document, Document, document.implementation.createHTMLDocument(""));
+  if (window.HTMLDocument) registerWrapper(window.HTMLDocument, Document);
+  wrapEventTargetMethods([ window.HTMLBodyElement, window.HTMLDocument || window.Document, window.HTMLHeadElement ]);
+  function DOMImplementation(impl) {
+    setWrapper(impl, this);
+  }
+  function wrapImplMethod(constructor, name) {
+    var original = document.implementation[name];
+    constructor.prototype[name] = function() {
+      return wrap(original.apply(unsafeUnwrap(this), arguments));
+    };
+  }
+  function forwardImplMethod(constructor, name) {
+    var original = document.implementation[name];
+    constructor.prototype[name] = function() {
+      return original.apply(unsafeUnwrap(this), arguments);
+    };
+  }
+  wrapImplMethod(DOMImplementation, "createDocumentType");
+  wrapImplMethod(DOMImplementation, "createDocument");
+  wrapImplMethod(DOMImplementation, "createHTMLDocument");
+  forwardImplMethod(DOMImplementation, "hasFeature");
+  registerWrapper(window.DOMImplementation, DOMImplementation);
+  forwardMethodsToWrapper([ window.DOMImplementation ], [ "createDocumentType", "createDocument", "createHTMLDocument", "hasFeature" ]);
+  scope.adoptNodeNoRemove = adoptNodeNoRemove;
+  scope.wrappers.DOMImplementation = DOMImplementation;
+  scope.wrappers.Document = Document;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var EventTarget = scope.wrappers.EventTarget;
+  var Selection = scope.wrappers.Selection;
+  var mixin = scope.mixin;
+  var registerWrapper = scope.registerWrapper;
+  var renderAllPending = scope.renderAllPending;
+  var unwrap = scope.unwrap;
+  var unwrapIfNeeded = scope.unwrapIfNeeded;
+  var wrap = scope.wrap;
+  var OriginalWindow = window.Window;
+  var originalGetComputedStyle = window.getComputedStyle;
+  var originalGetDefaultComputedStyle = window.getDefaultComputedStyle;
+  var originalGetSelection = window.getSelection;
+  function Window(impl) {
+    EventTarget.call(this, impl);
+  }
+  Window.prototype = Object.create(EventTarget.prototype);
+  OriginalWindow.prototype.getComputedStyle = function(el, pseudo) {
+    return wrap(this || window).getComputedStyle(unwrapIfNeeded(el), pseudo);
+  };
+  if (originalGetDefaultComputedStyle) {
+    OriginalWindow.prototype.getDefaultComputedStyle = function(el, pseudo) {
+      return wrap(this || window).getDefaultComputedStyle(unwrapIfNeeded(el), pseudo);
+    };
+  }
+  OriginalWindow.prototype.getSelection = function() {
+    return wrap(this || window).getSelection();
+  };
+  delete window.getComputedStyle;
+  delete window.getDefaultComputedStyle;
+  delete window.getSelection;
+  [ "addEventListener", "removeEventListener", "dispatchEvent" ].forEach(function(name) {
+    OriginalWindow.prototype[name] = function() {
+      var w = wrap(this || window);
+      return w[name].apply(w, arguments);
+    };
+    delete window[name];
+  });
+  mixin(Window.prototype, {
+    getComputedStyle: function(el, pseudo) {
+      renderAllPending();
+      return originalGetComputedStyle.call(unwrap(this), unwrapIfNeeded(el), pseudo);
+    },
+    getSelection: function() {
+      renderAllPending();
+      return new Selection(originalGetSelection.call(unwrap(this)));
+    },
+    get document() {
+      return wrap(unwrap(this).document);
+    }
+  });
+  if (originalGetDefaultComputedStyle) {
+    Window.prototype.getDefaultComputedStyle = function(el, pseudo) {
+      renderAllPending();
+      return originalGetDefaultComputedStyle.call(unwrap(this), unwrapIfNeeded(el), pseudo);
+    };
+  }
+  registerWrapper(OriginalWindow, Window, window);
+  scope.wrappers.Window = Window;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var unwrap = scope.unwrap;
+  var OriginalDataTransfer = window.DataTransfer || window.Clipboard;
+  var OriginalDataTransferSetDragImage = OriginalDataTransfer.prototype.setDragImage;
+  if (OriginalDataTransferSetDragImage) {
+    OriginalDataTransfer.prototype.setDragImage = function(image, x, y) {
+      OriginalDataTransferSetDragImage.call(this, unwrap(image), x, y);
+    };
+  }
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var registerWrapper = scope.registerWrapper;
+  var setWrapper = scope.setWrapper;
+  var unwrap = scope.unwrap;
+  var OriginalFormData = window.FormData;
+  if (!OriginalFormData) return;
+  function FormData(formElement) {
+    var impl;
+    if (formElement instanceof OriginalFormData) {
+      impl = formElement;
+    } else {
+      impl = new OriginalFormData(formElement && unwrap(formElement));
+    }
+    setWrapper(impl, this);
+  }
+  registerWrapper(OriginalFormData, FormData, new OriginalFormData());
+  scope.wrappers.FormData = FormData;
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var unwrapIfNeeded = scope.unwrapIfNeeded;
+  var originalSend = XMLHttpRequest.prototype.send;
+  XMLHttpRequest.prototype.send = function(obj) {
+    return originalSend.call(this, unwrapIfNeeded(obj));
+  };
+})(window.ShadowDOMPolyfill);
+
+(function(scope) {
+  "use strict";
+  var isWrapperFor = scope.isWrapperFor;
+  var elements = {
+    a: "HTMLAnchorElement",
+    area: "HTMLAreaElement",
+    audio: "HTMLAudioElement",
+    base: "HTMLBaseElement",
+    body: "HTMLBodyElement",
+    br: "HTMLBRElement",
+    button: "HTMLButtonElement",
+    canvas: "HTMLCanvasElement",
+    caption: "HTMLTableCaptionElement",
+    col: "HTMLTableColElement",
+    content: "HTMLContentElement",
+    data: "HTMLDataElement",
+    datalist: "HTMLDataListElement",
+    del: "HTMLModElement",
+    dir: "HTMLDirectoryElement",
+    div: "HTMLDivElement",
+    dl: "HTMLDListElement",
+    embed: "HTMLEmbedElement",
+    fieldset: "HTMLFieldSetElement",
+    font: "HTMLFontElement",
+    form: "HTMLFormElement",
+    frame: "HTMLFrameElement",
+    frameset: "HTMLFrameSetElement",
+    h1: "HTMLHeadingElement",
+    head: "HTMLHeadElement",
+    hr: "HTMLHRElement",
+    html: "HTMLHtmlElement",
+    iframe: "HTMLIFrameElement",
+    img: "HTMLImageElement",
+    input: "HTMLInputElement",
+    keygen: "HTMLKeygenElement",
+    label: "HTMLLabelElement",
+    legend: "HTMLLegendElement",
+    li: "HTMLLIElement",
+    link: "HTMLLinkElement",
+    map: "HTMLMapElement",
+    marquee: "HTMLMarqueeElement",
+    menu: "HTMLMenuElement",
+    menuitem: "HTMLMenuItemElement",
+    meta: "HTMLMetaElement",
+    meter: "HTMLMeterElement",
+    object: "HTMLObjectElement",
+    ol: "HTMLOListElement",
+    optgroup: "HTMLOptGroupElement",
+    option: "HTMLOptionElement",
+    output: "HTMLOutputElement",
+    p: "HTMLParagraphElement",
+    param: "HTMLParamElement",
+    pre: "HTMLPreElement",
+    progress: "HTMLProgressElement",
+    q: "HTMLQuoteElement",
+    script: "HTMLScriptElement",
+    select: "HTMLSelectElement",
+    shadow: "HTMLShadowElement",
+    source: "HTMLSourceElement",
+    span: "HTMLSpanElement",
+    style: "HTMLStyleElement",
+    table: "HTMLTableElement",
+    tbody: "HTMLTableSectionElement",
+    template: "HTMLTemplateElement",
+    textarea: "HTMLTextAreaElement",
+    thead: "HTMLTableSectionElement",
+    time: "HTMLTimeElement",
+    title: "HTMLTitleElement",
+    tr: "HTMLTableRowElement",
+    track: "HTMLTrackElement",
+    ul: "HTMLUListElement",
+    video: "HTMLVideoElement"
+  };
+  function overrideConstructor(tagName) {
+    var nativeConstructorName = elements[tagName];
+    var nativeConstructor = window[nativeConstructorName];
+    if (!nativeConstructor) return;
+    var element = document.createElement(tagName);
+    var wrapperConstructor = element.constructor;
+    window[nativeConstructorName] = wrapperConstructor;
+  }
+  Object.keys(elements).forEach(overrideConstructor);
+  Object.getOwnPropertyNames(scope.wrappers).forEach(function(name) {
+    window[name] = scope.wrappers[name];
+  });
+})(window.ShadowDOMPolyfill);
\ No newline at end of file
diff --git a/bower_components/webcomponentsjs/ShadowDOM.min.js b/bower_components/webcomponentsjs/ShadowDOM.min.js
new file mode 100644
index 0000000..72faf74
--- /dev/null
+++ b/bower_components/webcomponentsjs/ShadowDOM.min.js
@@ -0,0 +1,13 @@
+/**
+ * @license
+ * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+ * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+ * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+ * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+ * Code distributed by Google as part of the polymer project is also
+ * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+ */
+// @version 0.5.5
+"undefined"==typeof WeakMap&&!function(){var e=Object.defineProperty,t=Date.now()%1e9,n=function(){this.name="__st"+(1e9*Math.random()>>>0)+(t++ +"__")};n.prototype={set:function(t,n){var r=t[this.name];return r&&r[0]===t?r[1]=n:e(t,this.name,{value:[t,n],writable:!0}),this},get:function(e){var t;return(t=e[this.name])&&t[0]===e?t[1]:void 0},"delete":function(e){var t=e[this.name];return t&&t[0]===e?(t[0]=t[1]=void 0,!0):!1},has:function(e){var t=e[this.name];return t?t[0]===e:!1}},window.WeakMap=n}(),window.ShadowDOMPolyfill={},function(e){"use strict";function t(){if("undefined"!=typeof chrome&&chrome.app&&chrome.app.runtime)return!1;if(navigator.getDeviceStorage)return!1;try{var e=new Function("return true;");return e()}catch(t){return!1}}function n(e){if(!e)throw new Error("Assertion failed")}function r(e,t){for(var n=k(t),r=0;r<n.length;r++){var o=n[r];I(e,o,F(t,o))}return e}function o(e,t){for(var n=k(t),r=0;r<n.length;r++){var 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diff --git a/bower_components/webcomponentsjs/bower.json b/bower_components/webcomponentsjs/bower.json
new file mode 100644
index 0000000..4129deb
--- /dev/null
+++ b/bower_components/webcomponentsjs/bower.json
@@ -0,0 +1,14 @@
+{
+  "name": "webcomponentsjs",
+  "main": "webcomponents.js",
+  "version": "0.5.5",
+  "homepage": "http://webcomponents.org",
+  "authors": [
+    "The Polymer Authors"
+  ],
+  "keywords": [
+    "webcomponents"
+  ],
+  "license": "BSD",
+  "ignore": []
+}
\ No newline at end of file
diff --git a/bower_components/webcomponentsjs/build.log b/bower_components/webcomponentsjs/build.log
new file mode 100644
index 0000000..44ece4a
--- /dev/null
+++ b/bower_components/webcomponentsjs/build.log
@@ -0,0 +1,31 @@
+BUILD LOG
+---------
+Build Time: 2015-02-17T17:24:48-0800
+
+NODEJS INFORMATION
+==================
+nodejs: v0.12.0
+gulp: 3.8.11
+gulp-audit: 1.0.0
+gulp-concat: 2.5.0
+gulp-header: 1.2.2
+gulp-uglify: 1.1.0
+run-sequence: 1.0.2
+web-component-tester: 2.2.3
+
+REPO REVISIONS
+==============
+webcomponentsjs: 74b6b18443dd13e1cee184f688e23ae3930ed30c
+
+BUILD HASHES
+============
+CustomElements.js: 939c4b32847bf8085532995428001c3402f96cff
+CustomElements.min.js: cb3fd472ea0a9c45f5f03f86a6c5083f5077e907
+HTMLImports.js: 018bc32bc02bc6dc7dcacbd409438b26c31c2e6d
+HTMLImports.min.js: a3cb3e4ded3d708ba8333a8d5927ec93587fc191
+ShadowDOM.js: e34e8e3707d015a0ac9ec718d17b93c54500d028
+ShadowDOM.min.js: b3c2f09259d03ec44bd08ebbe9ed67dae3a06aaf
+webcomponents-lite.js: 83f6c69c9f38d6c88b1717427e713e57a96e7d70
+webcomponents-lite.min.js: d369074b523ff3806e7f71770a4d360f33331d48
+webcomponents.js: b91a9a8ae8c79bfc0275a766f3153f390ef74d81
+webcomponents.min.js: 91901c97731fc010ba5bb43624aa37d5320071c4
\ No newline at end of file
diff --git a/bower_components/webcomponentsjs/package.json b/bower_components/webcomponentsjs/package.json
new file mode 100644
index 0000000..52fdd0e
--- /dev/null
+++ b/bower_components/webcomponentsjs/package.json
@@ -0,0 +1,31 @@
+{
+  "name": "webcomponents.js",
+  "version": "0.5.5",
+  "description": "webcomponents.js",
+  "main": "webcomponents.js",
+  "directories": {
+    "test": "tests"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/webcomponents/webcomponentsjs.git"
+  },
+  "author": "The Polymer Authors",
+  "license": {
+    "type": "BSD-3-Clause",
+    "url": "http://polymer.github.io/LICENSE.txt"
+  },
+  "bugs": {
+    "url": "https://github.com/webcomponents/webcomponentsjs/issues"
+  },
+  "homepage": "http://webcomponents.org",
+  "devDependencies": {
+    "gulp": "^3.8.8",
+    "gulp-audit": "^1.0.0",
+    "gulp-concat": "^2.4.1",
+    "gulp-header": "^1.1.1",
+    "gulp-uglify": "^1.0.1",
+    "run-sequence": "^1.0.1",
+    "web-component-tester": "*"
+  }
+}
diff --git a/bower_components/webcomponentsjs/webcomponents-lite.js b/bower_components/webcomponentsjs/webcomponents-lite.js
new file mode 100644
index 0000000..a6e17b5
--- /dev/null
+++ b/bower_components/webcomponentsjs/webcomponents-lite.js
@@ -0,0 +1,1728 @@
+/**
+ * @license
+ * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+ * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+ * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+ * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+ * Code distributed by Google as part of the polymer project is also
+ * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+ */
+// @version 0.5.5
+window.WebComponents = window.WebComponents || {};
+
+(function(scope) {
+  var flags = scope.flags || {};
+  var file = "webcomponents.js";
+  var script = document.querySelector('script[src*="' + file + '"]');
+  if (!flags.noOpts) {
+    location.search.slice(1).split("&").forEach(function(o) {
+      o = o.split("=");
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+    });
+    if (script) {
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+        if (a.name !== "src") {
+          flags[a.name] = a.value || true;
+        }
+      }
+    }
+    if (flags.log) {
+      var parts = flags.log.split(",");
+      flags.log = {};
+      parts.forEach(function(f) {
+        flags.log[f] = true;
+      });
+    } else {
+      flags.log = {};
+    }
+  }
+  flags.shadow = flags.shadow || flags.shadowdom || flags.polyfill;
+  if (flags.shadow === "native") {
+    flags.shadow = false;
+  } else {
+    flags.shadow = flags.shadow || !HTMLElement.prototype.createShadowRoot;
+  }
+  if (flags.register) {
+    window.CustomElements = window.CustomElements || {
+      flags: {}
+    };
+    window.CustomElements.flags.register = flags.register;
+  }
+  scope.flags = flags;
+})(WebComponents);
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+  if (/Trident|Edge/.test(navigator.userAgent)) {
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+    window.addEventListener("message", function(e) {
+      if (e.data === sentinel) {
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+  var scheduledObservers = [];
+  function scheduleCallback(observer) {
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+    if (!isScheduled) {
+      isScheduled = true;
+      setImmediate(dispatchCallbacks);
+    }
+  }
+  function wrapIfNeeded(node) {
+    return window.ShadowDOMPolyfill && window.ShadowDOMPolyfill.wrapIfNeeded(node) || node;
+  }
+  function dispatchCallbacks() {
+    isScheduled = false;
+    var observers = scheduledObservers;
+    scheduledObservers = [];
+    observers.sort(function(o1, o2) {
+      return o1.uid_ - o2.uid_;
+    });
+    var anyNonEmpty = false;
+    observers.forEach(function(observer) {
+      var queue = observer.takeRecords();
+      removeTransientObserversFor(observer);
+      if (queue.length) {
+        observer.callback_(queue, observer);
+        anyNonEmpty = true;
+      }
+    });
+    if (anyNonEmpty) dispatchCallbacks();
+  }
+  function removeTransientObserversFor(observer) {
+    observer.nodes_.forEach(function(node) {
+      var registrations = registrationsTable.get(node);
+      if (!registrations) return;
+      registrations.forEach(function(registration) {
+        if (registration.observer === observer) registration.removeTransientObservers();
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+          break;
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+            registration.removeListeners();
+            registrations.splice(i, 1);
+            break;
+          }
+        }
+      }, this);
+      this.records_ = [];
+    },
+    takeRecords: function() {
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+      this.records_ = [];
+      return copyOfRecords;
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+    this.target = target;
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+    this.previousSibling = null;
+    this.nextSibling = null;
+    this.attributeName = null;
+    this.attributeNamespace = null;
+    this.oldValue = null;
+  }
+  function copyMutationRecord(original) {
+    var record = new MutationRecord(original.type, original.target);
+    record.addedNodes = original.addedNodes.slice();
+    record.removedNodes = original.removedNodes.slice();
+    record.previousSibling = original.previousSibling;
+    record.nextSibling = original.nextSibling;
+    record.attributeName = original.attributeName;
+    record.attributeNamespace = original.attributeNamespace;
+    record.oldValue = original.oldValue;
+    return record;
+  }
+  var currentRecord, recordWithOldValue;
+  function getRecord(type, target) {
+    return currentRecord = new MutationRecord(type, target);
+  }
+  function getRecordWithOldValue(oldValue) {
+    if (recordWithOldValue) return recordWithOldValue;
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+    return recordWithOldValue;
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+  function clearRecords() {
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+  }
+  function recordRepresentsCurrentMutation(record) {
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+  }
+  function selectRecord(lastRecord, newRecord) {
+    if (lastRecord === newRecord) return lastRecord;
+    if (recordWithOldValue && recordRepresentsCurrentMutation(lastRecord)) return recordWithOldValue;
+    return null;
+  }
+  function Registration(observer, target, options) {
+    this.observer = observer;
+    this.target = target;
+    this.options = options;
+    this.transientObservedNodes = [];
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+  Registration.prototype = {
+    enqueue: function(record) {
+      var records = this.observer.records_;
+      var length = records.length;
+      if (records.length > 0) {
+        var lastRecord = records[length - 1];
+        var recordToReplaceLast = selectRecord(lastRecord, record);
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+          return;
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+        scheduleCallback(this.observer);
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+      records[length] = record;
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+    addListeners: function() {
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+    },
+    addListeners_: function(node) {
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+      if (options.attributes) node.addEventListener("DOMAttrModified", this, true);
+      if (options.characterData) node.addEventListener("DOMCharacterDataModified", this, true);
+      if (options.childList) node.addEventListener("DOMNodeInserted", this, true);
+      if (options.childList || options.subtree) node.addEventListener("DOMNodeRemoved", this, true);
+    },
+    removeListeners: function() {
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+      if (options.characterData) node.removeEventListener("DOMCharacterDataModified", this, true);
+      if (options.childList) node.removeEventListener("DOMNodeInserted", this, true);
+      if (options.childList || options.subtree) node.removeEventListener("DOMNodeRemoved", this, true);
+    },
+    addTransientObserver: function(node) {
+      if (node === this.target) return;
+      this.addListeners_(node);
+      this.transientObservedNodes.push(node);
+      var registrations = registrationsTable.get(node);
+      if (!registrations) registrationsTable.set(node, registrations = []);
+      registrations.push(this);
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+            break;
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+        var name = e.attrName;
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+        var target = e.target;
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+        record.attributeNamespace = namespace;
+        var oldValue = e.attrChange === MutationEvent.ADDITION ? null : e.prevValue;
+        forEachAncestorAndObserverEnqueueRecord(target, function(options) {
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+          if (options.attributeFilter && options.attributeFilter.length && options.attributeFilter.indexOf(name) === -1 && options.attributeFilter.indexOf(namespace) === -1) {
+            return;
+          }
+          if (options.attributeOldValue) return getRecordWithOldValue(oldValue);
+          return record;
+        });
+        break;
+
+       case "DOMCharacterDataModified":
+        var target = e.target;
+        var record = getRecord("characterData", target);
+        var oldValue = e.prevValue;
+        forEachAncestorAndObserverEnqueueRecord(target, function(options) {
+          if (!options.characterData) return;
+          if (options.characterDataOldValue) return getRecordWithOldValue(oldValue);
+          return record;
+        });
+        break;
+
+       case "DOMNodeRemoved":
+        this.addTransientObserver(e.target);
+
+       case "DOMNodeInserted":
+        var changedNode = e.target;
+        var addedNodes, removedNodes;
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+          removedNodes = [];
+        } else {
+          addedNodes = [];
+          removedNodes = [ changedNode ];
+        }
+        var previousSibling = changedNode.previousSibling;
+        var nextSibling = changedNode.nextSibling;
+        var record = getRecord("childList", e.target.parentNode);
+        record.addedNodes = addedNodes;
+        record.removedNodes = removedNodes;
+        record.previousSibling = previousSibling;
+        record.nextSibling = nextSibling;
+        forEachAncestorAndObserverEnqueueRecord(e.relatedNode, function(options) {
+          if (!options.childList) return;
+          return record;
+        });
+      }
+      clearRecords();
+    }
+  };
+  global.JsMutationObserver = JsMutationObserver;
+  if (!global.MutationObserver) global.MutationObserver = JsMutationObserver;
+})(this);
+
+if (typeof WeakMap === "undefined") {
+  (function() {
+    var defineProperty = Object.defineProperty;
+    var counter = Date.now() % 1e9;
+    var WeakMap = function() {
+      this.name = "__st" + (Math.random() * 1e9 >>> 0) + (counter++ + "__");
+    };
+    WeakMap.prototype = {
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+        var entry = key[this.name];
+        if (entry && entry[0] === key) entry[1] = value; else defineProperty(key, this.name, {
+          value: [ key, value ],
+          writable: true
+        });
+        return this;
+      },
+      get: function(key) {
+        var entry;
+        return (entry = key[this.name]) && entry[0] === key ? entry[1] : undefined;
+      },
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+        if (!entry || entry[0] !== key) return false;
+        entry[0] = entry[1] = undefined;
+        return true;
+      },
+      has: function(key) {
+        var entry = key[this.name];
+        if (!entry) return false;
+        return entry[0] === key;
+      }
+    };
+    window.WeakMap = WeakMap;
+  })();
+}
+
+window.HTMLImports = window.HTMLImports || {
+  flags: {}
+};
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+  var hasShadowDOMPolyfill = Boolean(window.ShadowDOMPolyfill);
+  var wrap = function(node) {
+    return hasShadowDOMPolyfill ? ShadowDOMPolyfill.wrapIfNeeded(node) : node;
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+  var currentScriptDescriptor = {
+    get: function() {
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+      return wrap(script);
+    },
+    configurable: true
+  };
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+  function isDocumentReady(doc) {
+    return doc.readyState === "complete" || doc.readyState === requiredReadyState;
+  }
+  function whenDocumentReady(callback, doc) {
+    if (!isDocumentReady(doc)) {
+      var checkReady = function() {
+        if (doc.readyState === "complete" || doc.readyState === requiredReadyState) {
+          doc.removeEventListener(READY_EVENT, checkReady);
+          whenDocumentReady(callback, doc);
+        }
+      };
+      doc.addEventListener(READY_EVENT, checkReady);
+    } else if (callback) {
+      callback();
+    }
+  }
+  function markTargetLoaded(event) {
+    event.target.__loaded = true;
+  }
+  function watchImportsLoad(callback, doc) {
+    var imports = doc.querySelectorAll("link[rel=import]");
+    var loaded = 0, l = imports.length;
+    function checkDone(d) {
+      if (loaded == l && callback) {
+        callback();
+      }
+    }
+    function loadedImport(e) {
+      markTargetLoaded(e);
+      loaded++;
+      checkDone();
+    }
+    if (l) {
+      for (var i = 0, imp; i < l && (imp = imports[i]); i++) {
+        if (isImportLoaded(imp)) {
+          loadedImport.call(imp, {
+            target: imp
+          });
+        } else {
+          imp.addEventListener("load", loadedImport);
+          imp.addEventListener("error", loadedImport);
+        }
+      }
+    } else {
+      checkDone();
+    }
+  }
+  function isImportLoaded(link) {
+    return useNative ? link.__loaded || link.import && link.import.readyState !== "loading" : link.__importParsed;
+  }
+  if (useNative) {
+    new MutationObserver(function(mxns) {
+      for (var i = 0, l = mxns.length, m; i < l && (m = mxns[i]); i++) {
+        if (m.addedNodes) {
+          handleImports(m.addedNodes);
+        }
+      }
+    }).observe(document.head, {
+      childList: true
+    });
+    function handleImports(nodes) {
+      for (var i = 0, l = nodes.length, n; i < l && (n = nodes[i]); i++) {
+        if (isImport(n)) {
+          handleImport(n);
+        }
+      }
+    }
+    function isImport(element) {
+      return element.localName === "link" && element.rel === "import";
+    }
+    function handleImport(element) {
+      var loaded = element.import;
+      if (loaded) {
+        markTargetLoaded({
+          target: element
+        });
+      } else {
+        element.addEventListener("load", markTargetLoaded);
+        element.addEventListener("error", markTargetLoaded);
+      }
+    }
+    (function() {
+      if (document.readyState === "loading") {
+        var imports = document.querySelectorAll("link[rel=import]");
+        for (var i = 0, l = imports.length, imp; i < l && (imp = imports[i]); i++) {
+          handleImport(imp);
+        }
+      }
+    })();
+  }
+  whenReady(function() {
+    HTMLImports.ready = true;
+    HTMLImports.readyTime = new Date().getTime();
+    var evt = rootDocument.createEvent("CustomEvent");
+    evt.initCustomEvent("HTMLImportsLoaded", true, true, {});
+    rootDocument.dispatchEvent(evt);
+  });
+  scope.IMPORT_LINK_TYPE = IMPORT_LINK_TYPE;
+  scope.useNative = useNative;
+  scope.rootDocument = rootDocument;
+  scope.whenReady = whenReady;
+  scope.isIE = isIE;
+})(HTMLImports);
+
+(function(scope) {
+  var modules = [];
+  var addModule = function(module) {
+    modules.push(module);
+  };
+  var initializeModules = function() {
+    modules.forEach(function(module) {
+      module(scope);
+    });
+  };
+  scope.addModule = addModule;
+  scope.initializeModules = initializeModules;
+})(HTMLImports);
+
+HTMLImports.addModule(function(scope) {
+  var CSS_URL_REGEXP = /(url\()([^)]*)(\))/g;
+  var CSS_IMPORT_REGEXP = /(@import[\s]+(?!url\())([^;]*)(;)/g;
+  var path = {
+    resolveUrlsInStyle: function(style) {
+      var doc = style.ownerDocument;
+      var resolver = doc.createElement("a");
+      style.textContent = this.resolveUrlsInCssText(style.textContent, resolver);
+      return style;
+    },
+    resolveUrlsInCssText: function(cssText, urlObj) {
+      var r = this.replaceUrls(cssText, urlObj, CSS_URL_REGEXP);
+      r = this.replaceUrls(r, urlObj, CSS_IMPORT_REGEXP);
+      return r;
+    },
+    replaceUrls: function(text, urlObj, regexp) {
+      return text.replace(regexp, function(m, pre, url, post) {
+        var urlPath = url.replace(/["']/g, "");
+        urlObj.href = urlPath;
+        urlPath = urlObj.href;
+        return pre + "'" + urlPath + "'" + post;
+      });
+    }
+  };
+  scope.path = path;
+});
+
+HTMLImports.addModule(function(scope) {
+  var xhr = {
+    async: true,
+    ok: function(request) {
+      return request.status >= 200 && request.status < 300 || request.status === 304 || request.status === 0;
+    },
+    load: function(url, next, nextContext) {
+      var request = new XMLHttpRequest();
+      if (scope.flags.debug || scope.flags.bust) {
+        url += "?" + Math.random();
+      }
+      request.open("GET", url, xhr.async);
+      request.addEventListener("readystatechange", function(e) {
+        if (request.readyState === 4) {
+          var locationHeader = request.getResponseHeader("Location");
+          var redirectedUrl = null;
+          if (locationHeader) {
+            var redirectedUrl = locationHeader.substr(0, 1) === "/" ? location.origin + locationHeader : locationHeader;
+          }
+          next.call(nextContext, !xhr.ok(request) && request, request.response || request.responseText, redirectedUrl);
+        }
+      });
+      request.send();
+      return request;
+    },
+    loadDocument: function(url, next, nextContext) {
+      this.load(url, next, nextContext).responseType = "document";
+    }
+  };
+  scope.xhr = xhr;
+});
+
+HTMLImports.addModule(function(scope) {
+  var xhr = scope.xhr;
+  var flags = scope.flags;
+  var Loader = function(onLoad, onComplete) {
+    this.cache = {};
+    this.onload = onLoad;
+    this.oncomplete = onComplete;
+    this.inflight = 0;
+    this.pending = {};
+  };
+  Loader.prototype = {
+    addNodes: function(nodes) {
+      this.inflight += nodes.length;
+      for (var i = 0, l = nodes.length, n; i < l && (n = nodes[i]); i++) {
+        this.require(n);
+      }
+      this.checkDone();
+    },
+    addNode: function(node) {
+      this.inflight++;
+      this.require(node);
+      this.checkDone();
+    },
+    require: function(elt) {
+      var url = elt.src || elt.href;
+      elt.__nodeUrl = url;
+      if (!this.dedupe(url, elt)) {
+        this.fetch(url, elt);
+      }
+    },
+    dedupe: function(url, elt) {
+      if (this.pending[url]) {
+        this.pending[url].push(elt);
+        return true;
+      }
+      var resource;
+      if (this.cache[url]) {
+        this.onload(url, elt, this.cache[url]);
+        this.tail();
+        return true;
+      }
+      this.pending[url] = [ elt ];
+      return false;
+    },
+    fetch: function(url, elt) {
+      flags.load && console.log("fetch", url, elt);
+      if (!url) {
+        setTimeout(function() {
+          this.receive(url, elt, {
+            error: "href must be specified"
+          }, null);
+        }.bind(this), 0);
+      } else if (url.match(/^data:/)) {
+        var pieces = url.split(",");
+        var header = pieces[0];
+        var body = pieces[1];
+        if (header.indexOf(";base64") > -1) {
+          body = atob(body);
+        } else {
+          body = decodeURIComponent(body);
+        }
+        setTimeout(function() {
+          this.receive(url, elt, null, body);
+        }.bind(this), 0);
+      } else {
+        var receiveXhr = function(err, resource, redirectedUrl) {
+          this.receive(url, elt, err, resource, redirectedUrl);
+        }.bind(this);
+        xhr.load(url, receiveXhr);
+      }
+    },
+    receive: function(url, elt, err, resource, redirectedUrl) {
+      this.cache[url] = resource;
+      var $p = this.pending[url];
+      for (var i = 0, l = $p.length, p; i < l && (p = $p[i]); i++) {
+        this.onload(url, p, resource, err, redirectedUrl);
+        this.tail();
+      }
+      this.pending[url] = null;
+    },
+    tail: function() {
+      --this.inflight;
+      this.checkDone();
+    },
+    checkDone: function() {
+      if (!this.inflight) {
+        this.oncomplete();
+      }
+    }
+  };
+  scope.Loader = Loader;
+});
+
+HTMLImports.addModule(function(scope) {
+  var Observer = function(addCallback) {
+    this.addCallback = addCallback;
+    this.mo = new MutationObserver(this.handler.bind(this));
+  };
+  Observer.prototype = {
+    handler: function(mutations) {
+      for (var i = 0, l = mutations.length, m; i < l && (m = mutations[i]); i++) {
+        if (m.type === "childList" && m.addedNodes.length) {
+          this.addedNodes(m.addedNodes);
+        }
+      }
+    },
+    addedNodes: function(nodes) {
+      if (this.addCallback) {
+        this.addCallback(nodes);
+      }
+      for (var i = 0, l = nodes.length, n, loading; i < l && (n = nodes[i]); i++) {
+        if (n.children && n.children.length) {
+          this.addedNodes(n.children);
+        }
+      }
+    },
+    observe: function(root) {
+      this.mo.observe(root, {
+        childList: true,
+        subtree: true
+      });
+    }
+  };
+  scope.Observer = Observer;
+});
+
+HTMLImports.addModule(function(scope) {
+  var path = scope.path;
+  var rootDocument = scope.rootDocument;
+  var flags = scope.flags;
+  var isIE = scope.isIE;
+  var IMPORT_LINK_TYPE = scope.IMPORT_LINK_TYPE;
+  var IMPORT_SELECTOR = "link[rel=" + IMPORT_LINK_TYPE + "]";
+  var importParser = {
+    documentSelectors: IMPORT_SELECTOR,
+    importsSelectors: [ IMPORT_SELECTOR, "link[rel=stylesheet]", "style", "script:not([type])", 'script[type="text/javascript"]' ].join(","),
+    map: {
+      link: "parseLink",
+      script: "parseScript",
+      style: "parseStyle"
+    },
+    dynamicElements: [],
+    parseNext: function() {
+      var next = this.nextToParse();
+      if (next) {
+        this.parse(next);
+      }
+    },
+    parse: function(elt) {
+      if (this.isParsed(elt)) {
+        flags.parse && console.log("[%s] is already parsed", elt.localName);
+        return;
+      }
+      var fn = this[this.map[elt.localName]];
+      if (fn) {
+        this.markParsing(elt);
+        fn.call(this, elt);
+      }
+    },
+    parseDynamic: function(elt, quiet) {
+      this.dynamicElements.push(elt);
+      if (!quiet) {
+        this.parseNext();
+      }
+    },
+    markParsing: function(elt) {
+      flags.parse && console.log("parsing", elt);
+      this.parsingElement = elt;
+    },
+    markParsingComplete: function(elt) {
+      elt.__importParsed = true;
+      this.markDynamicParsingComplete(elt);
+      if (elt.__importElement) {
+        elt.__importElement.__importParsed = true;
+        this.markDynamicParsingComplete(elt.__importElement);
+      }
+      this.parsingElement = null;
+      flags.parse && console.log("completed", elt);
+    },
+    markDynamicParsingComplete: function(elt) {
+      var i = this.dynamicElements.indexOf(elt);
+      if (i >= 0) {
+        this.dynamicElements.splice(i, 1);
+      }
+    },
+    parseImport: function(elt) {
+      if (HTMLImports.__importsParsingHook) {
+        HTMLImports.__importsParsingHook(elt);
+      }
+      if (elt.import) {
+        elt.import.__importParsed = true;
+      }
+      this.markParsingComplete(elt);
+      if (elt.__resource && !elt.__error) {
+        elt.dispatchEvent(new CustomEvent("load", {
+          bubbles: false
+        }));
+      } else {
+        elt.dispatchEvent(new CustomEvent("error", {
+          bubbles: false
+        }));
+      }
+      if (elt.__pending) {
+        var fn;
+        while (elt.__pending.length) {
+          fn = elt.__pending.shift();
+          if (fn) {
+            fn({
+              target: elt
+            });
+          }
+        }
+      }
+      this.parseNext();
+    },
+    parseLink: function(linkElt) {
+      if (nodeIsImport(linkElt)) {
+        this.parseImport(linkElt);
+      } else {
+        linkElt.href = linkElt.href;
+        this.parseGeneric(linkElt);
+      }
+    },
+    parseStyle: function(elt) {
+      var src = elt;
+      elt = cloneStyle(elt);
+      elt.__importElement = src;
+      this.parseGeneric(elt);
+    },
+    parseGeneric: function(elt) {
+      this.trackElement(elt);
+      this.addElementToDocument(elt);
+    },
+    rootImportForElement: function(elt) {
+      var n = elt;
+      while (n.ownerDocument.__importLink) {
+        n = n.ownerDocument.__importLink;
+      }
+      return n;
+    },
+    addElementToDocument: function(elt) {
+      var port = this.rootImportForElement(elt.__importElement || elt);
+      port.parentNode.insertBefore(elt, port);
+    },
+    trackElement: function(elt, callback) {
+      var self = this;
+      var done = function(e) {
+        if (callback) {
+          callback(e);
+        }
+        self.markParsingComplete(elt);
+        self.parseNext();
+      };
+      elt.addEventListener("load", done);
+      elt.addEventListener("error", done);
+      if (isIE && elt.localName === "style") {
+        var fakeLoad = false;
+        if (elt.textContent.indexOf("@import") == -1) {
+          fakeLoad = true;
+        } else if (elt.sheet) {
+          fakeLoad = true;
+          var csr = elt.sheet.cssRules;
+          var len = csr ? csr.length : 0;
+          for (var i = 0, r; i < len && (r = csr[i]); i++) {
+            if (r.type === CSSRule.IMPORT_RULE) {
+              fakeLoad = fakeLoad && Boolean(r.styleSheet);
+            }
+          }
+        }
+        if (fakeLoad) {
+          elt.dispatchEvent(new CustomEvent("load", {
+            bubbles: false
+          }));
+        }
+      }
+    },
+    parseScript: function(scriptElt) {
+      var script = document.createElement("script");
+      script.__importElement = scriptElt;
+      script.src = scriptElt.src ? scriptElt.src : generateScriptDataUrl(scriptElt);
+      scope.currentScript = scriptElt;
+      this.trackElement(script, function(e) {
+        script.parentNode.removeChild(script);
+        scope.currentScript = null;
+      });
+      this.addElementToDocument(script);
+    },
+    nextToParse: function() {
+      this._mayParse = [];
+      return !this.parsingElement && (this.nextToParseInDoc(rootDocument) || this.nextToParseDynamic());
+    },
+    nextToParseInDoc: function(doc, link) {
+      if (doc && this._mayParse.indexOf(doc) < 0) {
+        this._mayParse.push(doc);
+        var nodes = doc.querySelectorAll(this.parseSelectorsForNode(doc));
+        for (var i = 0, l = nodes.length, p = 0, n; i < l && (n = nodes[i]); i++) {
+          if (!this.isParsed(n)) {
+            if (this.hasResource(n)) {
+              return nodeIsImport(n) ? this.nextToParseInDoc(n.import, n) : n;
+            } else {
+              return;
+            }
+          }
+        }
+      }
+      return link;
+    },
+    nextToParseDynamic: function() {
+      return this.dynamicElements[0];
+    },
+    parseSelectorsForNode: function(node) {
+      var doc = node.ownerDocument || node;
+      return doc === rootDocument ? this.documentSelectors : this.importsSelectors;
+    },
+    isParsed: function(node) {
+      return node.__importParsed;
+    },
+    needsDynamicParsing: function(elt) {
+      return this.dynamicElements.indexOf(elt) >= 0;
+    },
+    hasResource: function(node) {
+      if (nodeIsImport(node) && node.import === undefined) {
+        return false;
+      }
+      return true;
+    }
+  };
+  function nodeIsImport(elt) {
+    return elt.localName === "link" && elt.rel === IMPORT_LINK_TYPE;
+  }
+  function generateScriptDataUrl(script) {
+    var scriptContent = generateScriptContent(script);
+    return "data:text/javascript;charset=utf-8," + encodeURIComponent(scriptContent);
+  }
+  function generateScriptContent(script) {
+    return script.textContent + generateSourceMapHint(script);
+  }
+  function generateSourceMapHint(script) {
+    var owner = script.ownerDocument;
+    owner.__importedScripts = owner.__importedScripts || 0;
+    var moniker = script.ownerDocument.baseURI;
+    var num = owner.__importedScripts ? "-" + owner.__importedScripts : "";
+    owner.__importedScripts++;
+    return "\n//# sourceURL=" + moniker + num + ".js\n";
+  }
+  function cloneStyle(style) {
+    var clone = style.ownerDocument.createElement("style");
+    clone.textContent = style.textContent;
+    path.resolveUrlsInStyle(clone);
+    return clone;
+  }
+  scope.parser = importParser;
+  scope.IMPORT_SELECTOR = IMPORT_SELECTOR;
+});
+
+HTMLImports.addModule(function(scope) {
+  var flags = scope.flags;
+  var IMPORT_LINK_TYPE = scope.IMPORT_LINK_TYPE;
+  var IMPORT_SELECTOR = scope.IMPORT_SELECTOR;
+  var rootDocument = scope.rootDocument;
+  var Loader = scope.Loader;
+  var Observer = scope.Observer;
+  var parser = scope.parser;
+  var importer = {
+    documents: {},
+    documentPreloadSelectors: IMPORT_SELECTOR,
+    importsPreloadSelectors: [ IMPORT_SELECTOR ].join(","),
+    loadNode: function(node) {
+      importLoader.addNode(node);
+    },
+    loadSubtree: function(parent) {
+      var nodes = this.marshalNodes(parent);
+      importLoader.addNodes(nodes);
+    },
+    marshalNodes: function(parent) {
+      return parent.querySelectorAll(this.loadSelectorsForNode(parent));
+    },
+    loadSelectorsForNode: function(node) {
+      var doc = node.ownerDocument || node;
+      return doc === rootDocument ? this.documentPreloadSelectors : this.importsPreloadSelectors;
+    },
+    loaded: function(url, elt, resource, err, redirectedUrl) {
+      flags.load && console.log("loaded", url, elt);
+      elt.__resource = resource;
+      elt.__error = err;
+      if (isImportLink(elt)) {
+        var doc = this.documents[url];
+        if (doc === undefined) {
+          doc = err ? null : makeDocument(resource, redirectedUrl || url);
+          if (doc) {
+            doc.__importLink = elt;
+            this.bootDocument(doc);
+          }
+          this.documents[url] = doc;
+        }
+        elt.import = doc;
+      }
+      parser.parseNext();
+    },
+    bootDocument: function(doc) {
+      this.loadSubtree(doc);
+      this.observer.observe(doc);
+      parser.parseNext();
+    },
+    loadedAll: function() {
+      parser.parseNext();
+    }
+  };
+  var importLoader = new Loader(importer.loaded.bind(importer), importer.loadedAll.bind(importer));
+  importer.observer = new Observer();
+  function isImportLink(elt) {
+    return isLinkRel(elt, IMPORT_LINK_TYPE);
+  }
+  function isLinkRel(elt, rel) {
+    return elt.localName === "link" && elt.getAttribute("rel") === rel;
+  }
+  function hasBaseURIAccessor(doc) {
+    return !!Object.getOwnPropertyDescriptor(doc, "baseURI");
+  }
+  function makeDocument(resource, url) {
+    var doc = document.implementation.createHTMLDocument(IMPORT_LINK_TYPE);
+    doc._URL = url;
+    var base = doc.createElement("base");
+    base.setAttribute("href", url);
+    if (!doc.baseURI && !hasBaseURIAccessor(doc)) {
+      Object.defineProperty(doc, "baseURI", {
+        value: url
+      });
+    }
+    var meta = doc.createElement("meta");
+    meta.setAttribute("charset", "utf-8");
+    doc.head.appendChild(meta);
+    doc.head.appendChild(base);
+    doc.body.innerHTML = resource;
+    if (window.HTMLTemplateElement && HTMLTemplateElement.bootstrap) {
+      HTMLTemplateElement.bootstrap(doc);
+    }
+    return doc;
+  }
+  if (!document.baseURI) {
+    var baseURIDescriptor = {
+      get: function() {
+        var base = document.querySelector("base");
+        return base ? base.href : window.location.href;
+      },
+      configurable: true
+    };
+    Object.defineProperty(document, "baseURI", baseURIDescriptor);
+    Object.defineProperty(rootDocument, "baseURI", baseURIDescriptor);
+  }
+  scope.importer = importer;
+  scope.importLoader = importLoader;
+});
+
+HTMLImports.addModule(function(scope) {
+  var parser = scope.parser;
+  var importer = scope.importer;
+  var dynamic = {
+    added: function(nodes) {
+      var owner, parsed, loading;
+      for (var i = 0, l = nodes.length, n; i < l && (n = nodes[i]); i++) {
+        if (!owner) {
+          owner = n.ownerDocument;
+          parsed = parser.isParsed(owner);
+        }
+        loading = this.shouldLoadNode(n);
+        if (loading) {
+          importer.loadNode(n);
+        }
+        if (this.shouldParseNode(n) && parsed) {
+          parser.parseDynamic(n, loading);
+        }
+      }
+    },
+    shouldLoadNode: function(node) {
+      return node.nodeType === 1 && matches.call(node, importer.loadSelectorsForNode(node));
+    },
+    shouldParseNode: function(node) {
+      return node.nodeType === 1 && matches.call(node, parser.parseSelectorsForNode(node));
+    }
+  };
+  importer.observer.addCallback = dynamic.added.bind(dynamic);
+  var matches = HTMLElement.prototype.matches || HTMLElement.prototype.matchesSelector || HTMLElement.prototype.webkitMatchesSelector || HTMLElement.prototype.mozMatchesSelector || HTMLElement.prototype.msMatchesSelector;
+});
+
+(function(scope) {
+  var initializeModules = scope.initializeModules;
+  var isIE = scope.isIE;
+  if (scope.useNative) {
+    return;
+  }
+  if (isIE && typeof window.CustomEvent !== "function") {
+    window.CustomEvent = function(inType, params) {
+      params = params || {};
+      var e = document.createEvent("CustomEvent");
+      e.initCustomEvent(inType, Boolean(params.bubbles), Boolean(params.cancelable), params.detail);
+      return e;
+    };
+    window.CustomEvent.prototype = window.Event.prototype;
+  }
+  initializeModules();
+  var rootDocument = scope.rootDocument;
+  function bootstrap() {
+    HTMLImports.importer.bootDocument(rootDocument);
+  }
+  if (document.readyState === "complete" || document.readyState === "interactive" && !window.attachEvent) {
+    bootstrap();
+  } else {
+    document.addEventListener("DOMContentLoaded", bootstrap);
+  }
+})(HTMLImports);
+
+window.CustomElements = window.CustomElements || {
+  flags: {}
+};
+
+(function(scope) {
+  var flags = scope.flags;
+  var modules = [];
+  var addModule = function(module) {
+    modules.push(module);
+  };
+  var initializeModules = function() {
+    modules.forEach(function(module) {
+      module(scope);
+    });
+  };
+  scope.addModule = addModule;
+  scope.initializeModules = initializeModules;
+  scope.hasNative = Boolean(document.registerElement);
+  scope.useNative = !flags.register && scope.hasNative && !window.ShadowDOMPolyfill && (!window.HTMLImports || HTMLImports.useNative);
+})(CustomElements);
+
+CustomElements.addModule(function(scope) {
+  var IMPORT_LINK_TYPE = window.HTMLImports ? HTMLImports.IMPORT_LINK_TYPE : "none";
+  function forSubtree(node, cb) {
+    findAllElements(node, function(e) {
+      if (cb(e)) {
+        return true;
+      }
+      forRoots(e, cb);
+    });
+    forRoots(node, cb);
+  }
+  function findAllElements(node, find, data) {
+    var e = node.firstElementChild;
+    if (!e) {
+      e = node.firstChild;
+      while (e && e.nodeType !== Node.ELEMENT_NODE) {
+        e = e.nextSibling;
+      }
+    }
+    while (e) {
+      if (find(e, data) !== true) {
+        findAllElements(e, find, data);
+      }
+      e = e.nextElementSibling;
+    }
+    return null;
+  }
+  function forRoots(node, cb) {
+    var root = node.shadowRoot;
+    while (root) {
+      forSubtree(root, cb);
+      root = root.olderShadowRoot;
+    }
+  }
+  var processingDocuments;
+  function forDocumentTree(doc, cb) {
+    processingDocuments = [];
+    _forDocumentTree(doc, cb);
+    processingDocuments = null;
+  }
+  function _forDocumentTree(doc, cb) {
+    doc = wrap(doc);
+    if (processingDocuments.indexOf(doc) >= 0) {
+      return;
+    }
+    processingDocuments.push(doc);
+    var imports = doc.querySelectorAll("link[rel=" + IMPORT_LINK_TYPE + "]");
+    for (var i = 0, l = imports.length, n; i < l && (n = imports[i]); i++) {
+      if (n.import) {
+        _forDocumentTree(n.import, cb);
+      }
+    }
+    cb(doc);
+  }
+  scope.forDocumentTree = forDocumentTree;
+  scope.forSubtree = forSubtree;
+});
+
+CustomElements.addModule(function(scope) {
+  var flags = scope.flags;
+  var forSubtree = scope.forSubtree;
+  var forDocumentTree = scope.forDocumentTree;
+  function addedNode(node) {
+    return added(node) || addedSubtree(node);
+  }
+  function added(node) {
+    if (scope.upgrade(node)) {
+      return true;
+    }
+    attached(node);
+  }
+  function addedSubtree(node) {
+    forSubtree(node, function(e) {
+      if (added(e)) {
+        return true;
+      }
+    });
+  }
+  function attachedNode(node) {
+    attached(node);
+    if (inDocument(node)) {
+      forSubtree(node, function(e) {
+        attached(e);
+      });
+    }
+  }
+  var hasPolyfillMutations = !window.MutationObserver || window.MutationObserver === window.JsMutationObserver;
+  scope.hasPolyfillMutations = hasPolyfillMutations;
+  var isPendingMutations = false;
+  var pendingMutations = [];
+  function deferMutation(fn) {
+    pendingMutations.push(fn);
+    if (!isPendingMutations) {
+      isPendingMutations = true;
+      setTimeout(takeMutations);
+    }
+  }
+  function takeMutations() {
+    isPendingMutations = false;
+    var $p = pendingMutations;
+    for (var i = 0, l = $p.length, p; i < l && (p = $p[i]); i++) {
+      p();
+    }
+    pendingMutations = [];
+  }
+  function attached(element) {
+    if (hasPolyfillMutations) {
+      deferMutation(function() {
+        _attached(element);
+      });
+    } else {
+      _attached(element);
+    }
+  }
+  function _attached(element) {
+    if (element.__upgraded__ && (element.attachedCallback || element.detachedCallback)) {
+      if (!element.__attached && inDocument(element)) {
+        element.__attached = true;
+        if (element.attachedCallback) {
+          element.attachedCallback();
+        }
+      }
+    }
+  }
+  function detachedNode(node) {
+    detached(node);
+    forSubtree(node, function(e) {
+      detached(e);
+    });
+  }
+  function detached(element) {
+    if (hasPolyfillMutations) {
+      deferMutation(function() {
+        _detached(element);
+      });
+    } else {
+      _detached(element);
+    }
+  }
+  function _detached(element) {
+    if (element.__upgraded__ && (element.attachedCallback || element.detachedCallback)) {
+      if (element.__attached && !inDocument(element)) {
+        element.__attached = false;
+        if (element.detachedCallback) {
+          element.detachedCallback();
+        }
+      }
+    }
+  }
+  function inDocument(element) {
+    var p = element;
+    var doc = wrap(document);
+    while (p) {
+      if (p == doc) {
+        return true;
+      }
+      p = p.parentNode || p.host;
+    }
+  }
+  function watchShadow(node) {
+    if (node.shadowRoot && !node.shadowRoot.__watched) {
+      flags.dom && console.log("watching shadow-root for: ", node.localName);
+      var root = node.shadowRoot;
+      while (root) {
+        observe(root);
+        root = root.olderShadowRoot;
+      }
+    }
+  }
+  function handler(mutations) {
+    if (flags.dom) {
+      var mx = mutations[0];
+      if (mx && mx.type === "childList" && mx.addedNodes) {
+        if (mx.addedNodes) {
+          var d = mx.addedNodes[0];
+          while (d && d !== document && !d.host) {
+            d = d.parentNode;
+          }
+          var u = d && (d.URL || d._URL || d.host && d.host.localName) || "";
+          u = u.split("/?").shift().split("/").pop();
+        }
+      }
+      console.group("mutations (%d) [%s]", mutations.length, u || "");
+    }
+    mutations.forEach(function(mx) {
+      if (mx.type === "childList") {
+        forEach(mx.addedNodes, function(n) {
+          if (!n.localName) {
+            return;
+          }
+          addedNode(n);
+        });
+        forEach(mx.removedNodes, function(n) {
+          if (!n.localName) {
+            return;
+          }
+          detachedNode(n);
+        });
+      }
+    });
+    flags.dom && console.groupEnd();
+  }
+  function takeRecords(node) {
+    node = wrap(node);
+    if (!node) {
+      node = wrap(document);
+    }
+    while (node.parentNode) {
+      node = node.parentNode;
+    }
+    var observer = node.__observer;
+    if (observer) {
+      handler(observer.takeRecords());
+      takeMutations();
+    }
+  }
+  var forEach = Array.prototype.forEach.call.bind(Array.prototype.forEach);
+  function observe(inRoot) {
+    if (inRoot.__observer) {
+      return;
+    }
+    var observer = new MutationObserver(handler);
+    observer.observe(inRoot, {
+      childList: true,
+      subtree: true
+    });
+    inRoot.__observer = observer;
+  }
+  function upgradeDocument(doc) {
+    doc = wrap(doc);
+    flags.dom && console.group("upgradeDocument: ", doc.baseURI.split("/").pop());
+    addedNode(doc);
+    observe(doc);
+    flags.dom && console.groupEnd();
+  }
+  function upgradeDocumentTree(doc) {
+    forDocumentTree(doc, upgradeDocument);
+  }
+  var originalCreateShadowRoot = Element.prototype.createShadowRoot;
+  if (originalCreateShadowRoot) {
+    Element.prototype.createShadowRoot = function() {
+      var root = originalCreateShadowRoot.call(this);
+      CustomElements.watchShadow(this);
+      return root;
+    };
+  }
+  scope.watchShadow = watchShadow;
+  scope.upgradeDocumentTree = upgradeDocumentTree;
+  scope.upgradeSubtree = addedSubtree;
+  scope.upgradeAll = addedNode;
+  scope.attachedNode = attachedNode;
+  scope.takeRecords = takeRecords;
+});
+
+CustomElements.addModule(function(scope) {
+  var flags = scope.flags;
+  function upgrade(node) {
+    if (!node.__upgraded__ && node.nodeType === Node.ELEMENT_NODE) {
+      var is = node.getAttribute("is");
+      var definition = scope.getRegisteredDefinition(is || node.localName);
+      if (definition) {
+        if (is && definition.tag == node.localName) {
+          return upgradeWithDefinition(node, definition);
+        } else if (!is && !definition.extends) {
+          return upgradeWithDefinition(node, definition);
+        }
+      }
+    }
+  }
+  function upgradeWithDefinition(element, definition) {
+    flags.upgrade && console.group("upgrade:", element.localName);
+    if (definition.is) {
+      element.setAttribute("is", definition.is);
+    }
+    implementPrototype(element, definition);
+    element.__upgraded__ = true;
+    created(element);
+    scope.attachedNode(element);
+    scope.upgradeSubtree(element);
+    flags.upgrade && console.groupEnd();
+    return element;
+  }
+  function implementPrototype(element, definition) {
+    if (Object.__proto__) {
+      element.__proto__ = definition.prototype;
+    } else {
+      customMixin(element, definition.prototype, definition.native);
+      element.__proto__ = definition.prototype;
+    }
+  }
+  function customMixin(inTarget, inSrc, inNative) {
+    var used = {};
+    var p = inSrc;
+    while (p !== inNative && p !== HTMLElement.prototype) {
+      var keys = Object.getOwnPropertyNames(p);
+      for (var i = 0, k; k = keys[i]; i++) {
+        if (!used[k]) {
+          Object.defineProperty(inTarget, k, Object.getOwnPropertyDescriptor(p, k));
+          used[k] = 1;
+        }
+      }
+      p = Object.getPrototypeOf(p);
+    }
+  }
+  function created(element) {
+    if (element.createdCallback) {
+      element.createdCallback();
+    }
+  }
+  scope.upgrade = upgrade;
+  scope.upgradeWithDefinition = upgradeWithDefinition;
+  scope.implementPrototype = implementPrototype;
+});
+
+CustomElements.addModule(function(scope) {
+  var upgradeDocumentTree = scope.upgradeDocumentTree;
+  var upgrade = scope.upgrade;
+  var upgradeWithDefinition = scope.upgradeWithDefinition;
+  var implementPrototype = scope.implementPrototype;
+  var useNative = scope.useNative;
+  function register(name, options) {
+    var definition = options || {};
+    if (!name) {
+      throw new Error("document.registerElement: first argument `name` must not be empty");
+    }
+    if (name.indexOf("-") < 0) {
+      throw new Error("document.registerElement: first argument ('name') must contain a dash ('-'). Argument provided was '" + String(name) + "'.");
+    }
+    if (isReservedTag(name)) {
+      throw new Error("Failed to execute 'registerElement' on 'Document': Registration failed for type '" + String(name) + "'. The type name is invalid.");
+    }
+    if (getRegisteredDefinition(name)) {
+      throw new Error("DuplicateDefinitionError: a type with name '" + String(name) + "' is already registered");
+    }
+    if (!definition.prototype) {
+      definition.prototype = Object.create(HTMLElement.prototype);
+    }
+    definition.__name = name.toLowerCase();
+    definition.lifecycle = definition.lifecycle || {};
+    definition.ancestry = ancestry(definition.extends);
+    resolveTagName(definition);
+    resolvePrototypeChain(definition);
+    overrideAttributeApi(definition.prototype);
+    registerDefinition(definition.__name, definition);
+    definition.ctor = generateConstructor(definition);
+    definition.ctor.prototype = definition.prototype;
+    definition.prototype.constructor = definition.ctor;
+    if (scope.ready) {
+      upgradeDocumentTree(document);
+    }
+    return definition.ctor;
+  }
+  function overrideAttributeApi(prototype) {
+    if (prototype.setAttribute._polyfilled) {
+      return;
+    }
+    var setAttribute = prototype.setAttribute;
+    prototype.setAttribute = function(name, value) {
+      changeAttribute.call(this, name, value, setAttribute);
+    };
+    var removeAttribute = prototype.removeAttribute;
+    prototype.removeAttribute = function(name) {
+      changeAttribute.call(this, name, null, removeAttribute);
+    };
+    prototype.setAttribute._polyfilled = true;
+  }
+  function changeAttribute(name, value, operation) {
+    name = name.toLowerCase();
+    var oldValue = this.getAttribute(name);
+    operation.apply(this, arguments);
+    var newValue = this.getAttribute(name);
+    if (this.attributeChangedCallback && newValue !== oldValue) {
+      this.attributeChangedCallback(name, oldValue, newValue);
+    }
+  }
+  function isReservedTag(name) {
+    for (var i = 0; i < reservedTagList.length; i++) {
+      if (name === reservedTagList[i]) {
+        return true;
+      }
+    }
+  }
+  var reservedTagList = [ "annotation-xml", "color-profile", "font-face", "font-face-src", "font-face-uri", "font-face-format", "font-face-name", "missing-glyph" ];
+  function ancestry(extnds) {
+    var extendee = getRegisteredDefinition(extnds);
+    if (extendee) {
+      return ancestry(extendee.extends).concat([ extendee ]);
+    }
+    return [];
+  }
+  function resolveTagName(definition) {
+    var baseTag = definition.extends;
+    for (var i = 0, a; a = definition.ancestry[i]; i++) {
+      baseTag = a.is && a.tag;
+    }
+    definition.tag = baseTag || definition.__name;
+    if (baseTag) {
+      definition.is = definition.__name;
+    }
+  }
+  function resolvePrototypeChain(definition) {
+    if (!Object.__proto__) {
+      var nativePrototype = HTMLElement.prototype;
+      if (definition.is) {
+        var inst = document.createElement(definition.tag);
+        var expectedPrototype = Object.getPrototypeOf(inst);
+        if (expectedPrototype === definition.prototype) {
+          nativePrototype = expectedPrototype;
+        }
+      }
+      var proto = definition.prototype, ancestor;
+      while (proto && proto !== nativePrototype) {
+        ancestor = Object.getPrototypeOf(proto);
+        proto.__proto__ = ancestor;
+        proto = ancestor;
+      }
+      definition.native = nativePrototype;
+    }
+  }
+  function instantiate(definition) {
+    return upgradeWithDefinition(domCreateElement(definition.tag), definition);
+  }
+  var registry = {};
+  function getRegisteredDefinition(name) {
+    if (name) {
+      return registry[name.toLowerCase()];
+    }
+  }
+  function registerDefinition(name, definition) {
+    registry[name] = definition;
+  }
+  function generateConstructor(definition) {
+    return function() {
+      return instantiate(definition);
+    };
+  }
+  var HTML_NAMESPACE = "http://www.w3.org/1999/xhtml";
+  function createElementNS(namespace, tag, typeExtension) {
+    if (namespace === HTML_NAMESPACE) {
+      return createElement(tag, typeExtension);
+    } else {
+      return domCreateElementNS(namespace, tag);
+    }
+  }
+  function createElement(tag, typeExtension) {
+    var definition = getRegisteredDefinition(typeExtension || tag);
+    if (definition) {
+      if (tag == definition.tag && typeExtension == definition.is) {
+        return new definition.ctor();
+      }
+      if (!typeExtension && !definition.is) {
+        return new definition.ctor();
+      }
+    }
+    var element;
+    if (typeExtension) {
+      element = createElement(tag);
+      element.setAttribute("is", typeExtension);
+      return element;
+    }
+    element = domCreateElement(tag);
+    if (tag.indexOf("-") >= 0) {
+      implementPrototype(element, HTMLElement);
+    }
+    return element;
+  }
+  function cloneNode(deep) {
+    var n = domCloneNode.call(this, deep);
+    upgrade(n);
+    return n;
+  }
+  var domCreateElement = document.createElement.bind(document);
+  var domCreateElementNS = document.createElementNS.bind(document);
+  var domCloneNode = Node.prototype.cloneNode;
+  var isInstance;
+  if (!Object.__proto__ && !useNative) {
+    isInstance = function(obj, ctor) {
+      var p = obj;
+      while (p) {
+        if (p === ctor.prototype) {
+          return true;
+        }
+        p = p.__proto__;
+      }
+      return false;
+    };
+  } else {
+    isInstance = function(obj, base) {
+      return obj instanceof base;
+    };
+  }
+  document.registerElement = register;
+  document.createElement = createElement;
+  document.createElementNS = createElementNS;
+  Node.prototype.cloneNode = cloneNode;
+  scope.registry = registry;
+  scope.instanceof = isInstance;
+  scope.reservedTagList = reservedTagList;
+  scope.getRegisteredDefinition = getRegisteredDefinition;
+  document.register = document.registerElement;
+});
+
+(function(scope) {
+  var useNative = scope.useNative;
+  var initializeModules = scope.initializeModules;
+  var isIE11OrOlder = /Trident/.test(navigator.userAgent);
+  if (useNative) {
+    var nop = function() {};
+    scope.watchShadow = nop;
+    scope.upgrade = nop;
+    scope.upgradeAll = nop;
+    scope.upgradeDocumentTree = nop;
+    scope.upgradeSubtree = nop;
+    scope.takeRecords = nop;
+    scope.instanceof = function(obj, base) {
+      return obj instanceof base;
+    };
+  } else {
+    initializeModules();
+  }
+  var upgradeDocumentTree = scope.upgradeDocumentTree;
+  if (!window.wrap) {
+    if (window.ShadowDOMPolyfill) {
+      window.wrap = ShadowDOMPolyfill.wrapIfNeeded;
+      window.unwrap = ShadowDOMPolyfill.unwrapIfNeeded;
+    } else {
+      window.wrap = window.unwrap = function(node) {
+        return node;
+      };
+    }
+  }
+  function bootstrap() {
+    upgradeDocumentTree(wrap(document));
+    if (window.HTMLImports) {
+      HTMLImports.__importsParsingHook = function(elt) {
+        upgradeDocumentTree(wrap(elt.import));
+      };
+    }
+    CustomElements.ready = true;
+    setTimeout(function() {
+      CustomElements.readyTime = Date.now();
+      if (window.HTMLImports) {
+        CustomElements.elapsed = CustomElements.readyTime - HTMLImports.readyTime;
+      }
+      document.dispatchEvent(new CustomEvent("WebComponentsReady", {
+        bubbles: true
+      }));
+    });
+  }
+  if (isIE11OrOlder && typeof window.CustomEvent !== "function") {
+    window.CustomEvent = function(inType, params) {
+      params = params || {};
+      var e = document.createEvent("CustomEvent");
+      e.initCustomEvent(inType, Boolean(params.bubbles), Boolean(params.cancelable), params.detail);
+      return e;
+    };
+    window.CustomEvent.prototype = window.Event.prototype;
+  }
+  if (document.readyState === "complete" || scope.flags.eager) {
+    bootstrap();
+  } else if (document.readyState === "interactive" && !window.attachEvent && (!window.HTMLImports || window.HTMLImports.ready)) {
+    bootstrap();
+  } else {
+    var loadEvent = window.HTMLImports && !HTMLImports.ready ? "HTMLImportsLoaded" : "DOMContentLoaded";
+    window.addEventListener(loadEvent, bootstrap);
+  }
+})(window.CustomElements);
+
+if (typeof HTMLTemplateElement === "undefined") {
+  (function() {
+    var TEMPLATE_TAG = "template";
+    HTMLTemplateElement = function() {};
+    HTMLTemplateElement.prototype = Object.create(HTMLElement.prototype);
+    HTMLTemplateElement.decorate = function(template) {
+      if (!template.content) {
+        template.content = template.ownerDocument.createDocumentFragment();
+        var child;
+        while (child = template.firstChild) {
+          template.content.appendChild(child);
+        }
+      }
+    };
+    HTMLTemplateElement.bootstrap = function(doc) {
+      var templates = doc.querySelectorAll(TEMPLATE_TAG);
+      for (var i = 0, l = templates.length, t; i < l && (t = templates[i]); i++) {
+        HTMLTemplateElement.decorate(t);
+      }
+    };
+    addEventListener("DOMContentLoaded", function() {
+      HTMLTemplateElement.bootstrap(document);
+    });
+  })();
+}
+
+(function(scope) {
+  var style = document.createElement("style");
+  style.textContent = "" + "body {" + "transition: opacity ease-in 0.2s;" + " } \n" + "body[unresolved] {" + "opacity: 0; display: block; overflow: hidden; position: relative;" + " } \n";
+  var head = document.querySelector("head");
+  head.insertBefore(style, head.firstChild);
+})(window.WebComponents);
\ No newline at end of file
diff --git a/bower_components/webcomponentsjs/webcomponents-lite.min.js b/bower_components/webcomponentsjs/webcomponents-lite.min.js
new file mode 100644
index 0000000..db80a80
--- /dev/null
+++ b/bower_components/webcomponentsjs/webcomponents-lite.min.js
@@ -0,0 +1,11 @@
+/**
+ * @license
+ * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+ * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+ * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+ * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+ * Code distributed by Google as part of the polymer project is also
+ * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+ */
+// @version 0.5.5
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\ No newline at end of file
diff --git a/bower_components/webcomponentsjs/webcomponents.js b/bower_components/webcomponentsjs/webcomponents.js
new file mode 100644
index 0000000..26f5d5b
--- /dev/null
+++ b/bower_components/webcomponentsjs/webcomponents.js
@@ -0,0 +1,6114 @@
+/**
+ * @license
+ * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+ * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+ * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+ * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+ * Code distributed by Google as part of the polymer project is also
+ * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+ */
+// @version 0.5.5
+window.WebComponents = window.WebComponents || {};
+
+(function(scope) {
+  var flags = scope.flags || {};
+  var file = "webcomponents.js";
+  var script = document.querySelector('script[src*="' + file + '"]');
+  if (!flags.noOpts) {
+    location.search.slice(1).split("&").forEach(function(o) {
+      o = o.split("=");
+      o[0] && (flags[o[0]] = o[1] || true);
+    });
+    if (script) {
+      for (var i = 0, a; a = script.attributes[i]; i++) {
+        if (a.name !== "src") {
+          flags[a.name] = a.value || true;
+        }
+      }
+    }
+    if (flags.log) {
+      var parts = flags.log.split(",");
+      flags.log = {};
+      parts.forEach(function(f) {
+        flags.log[f] = true;
+      });
+    } else {
+      flags.log = {};
+    }
+  }
+  flags.shadow = flags.shadow || flags.shadowdom || flags.polyfill;
+  if (flags.shadow === "native") {
+    flags.shadow = false;
+  } else {
+    flags.shadow = flags.shadow || !HTMLElement.prototype.createShadowRoot;
+  }
+  if (flags.register) {
+    window.CustomElements = window.CustomElements || {
+      flags: {}
+    };
+    window.CustomElements.flags.register = flags.register;
+  }
+  scope.flags = flags;
+})(WebComponents);
+
+if (WebComponents.flags.shadow) {
+  if (typeof WeakMap === "undefined") {
+    (function() {
+      var defineProperty = Object.defineProperty;
+      var counter = Date.now() % 1e9;
+      var WeakMap = function() {
+        this.name = "__st" + (Math.random() * 1e9 >>> 0) + (counter++ + "__");
+      };
+      WeakMap.prototype = {
+        set: function(key, value) {
+          var entry = key[this.name];
+          if (entry && entry[0] === key) entry[1] = value; else defineProperty(key, this.name, {
+            value: [ key, value ],
+            writable: true
+          });
+          return this;
+        },
+        get: function(key) {
+          var entry;
+          return (entry = key[this.name]) && entry[0] === key ? entry[1] : undefined;
+        },
+        "delete": function(key) {
+          var entry = key[this.name];
+          if (!entry || entry[0] !== key) return false;
+          entry[0] = entry[1] = undefined;
+          return true;
+        },
+        has: function(key) {
+          var entry = key[this.name];
+          if (!entry) return false;
+          return entry[0] === key;
+        }
+      };
+      window.WeakMap = WeakMap;
+    })();
+  }
+  window.ShadowDOMPolyfill = {};
+  (function(scope) {
+    "use strict";
+    var constructorTable = new WeakMap();
+    var nativePrototypeTable = new WeakMap();
+    var wrappers = Object.create(null);
+    function detectEval() {
+      if (typeof chrome !== "undefined" && chrome.app && chrome.app.runtime) {
+        return false;
+      }
+      if (navigator.getDeviceStorage) {
+        return false;
+      }
+      try {
+        var f = new Function("return true;");
+        return f();
+      } catch (ex) {
+        return false;
+      }
+    }
+    var hasEval = detectEval();
+    function assert(b) {
+      if (!b) throw new Error("Assertion failed");
+    }
+    var defineProperty = Object.defineProperty;
+    var getOwnPropertyNames = Object.getOwnPropertyNames;
+    var getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
+    function mixin(to, from) {
+      var names = getOwnPropertyNames(from);
+      for (var i = 0; i < names.length; i++) {
+        var name = names[i];
+        defineProperty(to, name, getOwnPropertyDescriptor(from, name));
+      }
+      return to;
+    }
+    function mixinStatics(to, from) {
+      var names = getOwnPropertyNames(from);
+      for (var i = 0; i < names.length; i++) {
+        var name = names[i];
+        switch (name) {
+         case "arguments":
+         case "caller":
+         case "length":
+         case "name":
+         case "prototype":
+         case "toString":
+          continue;
+        }
+        defineProperty(to, name, getOwnPropertyDescriptor(from, name));
+      }
+      return to;
+    }
+    function oneOf(object, propertyNames) {
+      for (var i = 0; i < propertyNames.length; i++) {
+        if (propertyNames[i] in object) return propertyNames[i];
+      }
+    }
+    var nonEnumerableDataDescriptor = {
+      value: undefined,
+      configurable: true,
+      enumerable: false,
+      writable: true
+    };
+    function defineNonEnumerableDataProperty(object, name, value) {
+      nonEnumerableDataDescriptor.value = value;
+      defineProperty(object, name, nonEnumerableDataDescriptor);
+    }
+    getOwnPropertyNames(window);
+    function getWrapperConstructor(node) {
+      var nativePrototype = node.__proto__ || Object.getPrototypeOf(node);
+      if (isFirefox) {
+        try {
+          getOwnPropertyNames(nativePrototype);
+        } catch (error) {
+          nativePrototype = nativePrototype.__proto__;
+        }
+      }
+      var wrapperConstructor = constructorTable.get(nativePrototype);
+      if (wrapperConstructor) return wrapperConstructor;
+      var parentWrapperConstructor = getWrapperConstructor(nativePrototype);
+      var GeneratedWrapper = createWrapperConstructor(parentWrapperConstructor);
+      registerInternal(nativePrototype, GeneratedWrapper, node);
+      return GeneratedWrapper;
+    }
+    function addForwardingProperties(nativePrototype, wrapperPrototype) {
+      installProperty(nativePrototype, wrapperPrototype, true);
+    }
+    function registerInstanceProperties(wrapperPrototype, instanceObject) {
+      installProperty(instanceObject, wrapperPrototype, false);
+    }
+    var isFirefox = /Firefox/.test(navigator.userAgent);
+    var dummyDescriptor = {
+      get: function() {},
+      set: function(v) {},
+      configurable: true,
+      enumerable: true
+    };
+    function isEventHandlerName(name) {
+      return /^on[a-z]+$/.test(name);
+    }
+    function isIdentifierName(name) {
+      return /^\w[a-zA-Z_0-9]*$/.test(name);
+    }
+    function getGetter(name) {
+      return hasEval && isIdentifierName(name) ? new Function("return this.__impl4cf1e782hg__." + name) : function() {
+        return this.__impl4cf1e782hg__[name];
+      };
+    }
+    function getSetter(name) {
+      return hasEval && isIdentifierName(name) ? new Function("v", "this.__impl4cf1e782hg__." + name + " = v") : function(v) {
+        this.__impl4cf1e782hg__[name] = v;
+      };
+    }
+    function getMethod(name) {
+      return hasEval && isIdentifierName(name) ? new Function("return this.__impl4cf1e782hg__." + name + ".apply(this.__impl4cf1e782hg__, arguments)") : function() {
+        return this.__impl4cf1e782hg__[name].apply(this.__impl4cf1e782hg__, arguments);
+      };
+    }
+    function getDescriptor(source, name) {
+      try {
+        return Object.getOwnPropertyDescriptor(source, name);
+      } catch (ex) {
+        return dummyDescriptor;
+      }
+    }
+    var isBrokenSafari = function() {
+      var descr = Object.getOwnPropertyDescriptor(Node.prototype, "nodeType");
+      return descr && !descr.get && !descr.set;
+    }();
+    function installProperty(source, target, allowMethod, opt_blacklist) {
+      var names = getOwnPropertyNames(source);
+      for (var i = 0; i < names.length; i++) {
+        var name = names[i];
+        if (name === "polymerBlackList_") continue;
+        if (name in target) continue;
+        if (source.polymerBlackList_ && source.polymerBlackList_[name]) continue;
+        if (isFirefox) {
+          source.__lookupGetter__(name);
+        }
+        var descriptor = getDescriptor(source, name);
+        var getter, setter;
+        if (allowMethod && typeof descriptor.value === "function") {
+          target[name] = getMethod(name);
+          continue;
+        }
+        var isEvent = isEventHandlerName(name);
+        if (isEvent) getter = scope.getEventHandlerGetter(name); else getter = getGetter(name);
+        if (descriptor.writable || descriptor.set || isBrokenSafari) {
+          if (isEvent) setter = scope.getEventHandlerSetter(name); else setter = getSetter(name);
+        }
+        var configurable = isBrokenSafari || descriptor.configurable;
+        defineProperty(target, name, {
+          get: getter,
+          set: setter,
+          configurable: configurable,
+          enumerable: descriptor.enumerable
+        });
+      }
+    }
+    function register(nativeConstructor, wrapperConstructor, opt_instance) {
+      var nativePrototype = nativeConstructor.prototype;
+      registerInternal(nativePrototype, wrapperConstructor, opt_instance);
+      mixinStatics(wrapperConstructor, nativeConstructor);
+    }
+    function registerInternal(nativePrototype, wrapperConstructor, opt_instance) {
+      var wrapperPrototype = wrapperConstructor.prototype;
+      assert(constructorTable.get(nativePrototype) === undefined);
+      constructorTable.set(nativePrototype, wrapperConstructor);
+      nativePrototypeTable.set(wrapperPrototype, nativePrototype);
+      addForwardingProperties(nativePrototype, wrapperPrototype);
+      if (opt_instance) registerInstanceProperties(wrapperPrototype, opt_instance);
+      defineNonEnumerableDataProperty(wrapperPrototype, "constructor", wrapperConstructor);
+      wrapperConstructor.prototype = wrapperPrototype;
+    }
+    function isWrapperFor(wrapperConstructor, nativeConstructor) {
+      return constructorTable.get(nativeConstructor.prototype) === wrapperConstructor;
+    }
+    function registerObject(object) {
+      var nativePrototype = Object.getPrototypeOf(object);
+      var superWrapperConstructor = getWrapperConstructor(nativePrototype);
+      var GeneratedWrapper = createWrapperConstructor(superWrapperConstructor);
+      registerInternal(nativePrototype, GeneratedWrapper, object);
+      return GeneratedWrapper;
+    }
+    function createWrapperConstructor(superWrapperConstructor) {
+      function GeneratedWrapper(node) {
+        superWrapperConstructor.call(this, node);
+      }
+      var p = Object.create(superWrapperConstructor.prototype);
+      p.constructor = GeneratedWrapper;
+      GeneratedWrapper.prototype = p;
+      return GeneratedWrapper;
+    }
+    function isWrapper(object) {
+      return object && object.__impl4cf1e782hg__;
+    }
+    function isNative(object) {
+      return !isWrapper(object);
+    }
+    function wrap(impl) {
+      if (impl === null) return null;
+      assert(isNative(impl));
+      return impl.__wrapper8e3dd93a60__ || (impl.__wrapper8e3dd93a60__ = new (getWrapperConstructor(impl))(impl));
+    }
+    function unwrap(wrapper) {
+      if (wrapper === null) return null;
+      assert(isWrapper(wrapper));
+      return wrapper.__impl4cf1e782hg__;
+    }
+    function unsafeUnwrap(wrapper) {
+      return wrapper.__impl4cf1e782hg__;
+    }
+    function setWrapper(impl, wrapper) {
+      wrapper.__impl4cf1e782hg__ = impl;
+      impl.__wrapper8e3dd93a60__ = wrapper;
+    }
+    function unwrapIfNeeded(object) {
+      return object && isWrapper(object) ? unwrap(object) : object;
+    }
+    function wrapIfNeeded(object) {
+      return object && !isWrapper(object) ? wrap(object) : object;
+    }
+    function rewrap(node, wrapper) {
+      if (wrapper === null) return;
+      assert(isNative(node));
+      assert(wrapper === undefined || isWrapper(wrapper));
+      node.__wrapper8e3dd93a60__ = wrapper;
+    }
+    var getterDescriptor = {
+      get: undefined,
+      configurable: true,
+      enumerable: true
+    };
+    function defineGetter(constructor, name, getter) {
+      getterDescriptor.get = getter;
+      defineProperty(constructor.prototype, name, getterDescriptor);
+    }
+    function defineWrapGetter(constructor, name) {
+      defineGetter(constructor, name, function() {
+        return wrap(this.__impl4cf1e782hg__[name]);
+      });
+    }
+    function forwardMethodsToWrapper(constructors, names) {
+      constructors.forEach(function(constructor) {
+        names.forEach(function(name) {
+          constructor.prototype[name] = function() {
+            var w = wrapIfNeeded(this);
+            return w[name].apply(w, arguments);
+          };
+        });
+      });
+    }
+    scope.assert = assert;
+    scope.constructorTable = constructorTable;
+    scope.defineGetter = defineGetter;
+    scope.defineWrapGetter = defineWrapGetter;
+    scope.forwardMethodsToWrapper = forwardMethodsToWrapper;
+    scope.isWrapper = isWrapper;
+    scope.isWrapperFor = isWrapperFor;
+    scope.mixin = mixin;
+    scope.nativePrototypeTable = nativePrototypeTable;
+    scope.oneOf = oneOf;
+    scope.registerObject = registerObject;
+    scope.registerWrapper = register;
+    scope.rewrap = rewrap;
+    scope.setWrapper = setWrapper;
+    scope.unsafeUnwrap = unsafeUnwrap;
+    scope.unwrap = unwrap;
+    scope.unwrapIfNeeded = unwrapIfNeeded;
+    scope.wrap = wrap;
+    scope.wrapIfNeeded = wrapIfNeeded;
+    scope.wrappers = wrappers;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    function newSplice(index, removed, addedCount) {
+      return {
+        index: index,
+        removed: removed,
+        addedCount: addedCount
+      };
+    }
+    var EDIT_LEAVE = 0;
+    var EDIT_UPDATE = 1;
+    var EDIT_ADD = 2;
+    var EDIT_DELETE = 3;
+    function ArraySplice() {}
+    ArraySplice.prototype = {
+      calcEditDistances: function(current, currentStart, currentEnd, old, oldStart, oldEnd) {
+        var rowCount = oldEnd - oldStart + 1;
+        var columnCount = currentEnd - currentStart + 1;
+        var distances = new Array(rowCount);
+        for (var i = 0; i < rowCount; i++) {
+          distances[i] = new Array(columnCount);
+          distances[i][0] = i;
+        }
+        for (var j = 0; j < columnCount; j++) distances[0][j] = j;
+        for (var i = 1; i < rowCount; i++) {
+          for (var j = 1; j < columnCount; j++) {
+            if (this.equals(current[currentStart + j - 1], old[oldStart + i - 1])) distances[i][j] = distances[i - 1][j - 1]; else {
+              var north = distances[i - 1][j] + 1;
+              var west = distances[i][j - 1] + 1;
+              distances[i][j] = north < west ? north : west;
+            }
+          }
+        }
+        return distances;
+      },
+      spliceOperationsFromEditDistances: function(distances) {
+        var i = distances.length - 1;
+        var j = distances[0].length - 1;
+        var current = distances[i][j];
+        var edits = [];
+        while (i > 0 || j > 0) {
+          if (i == 0) {
+            edits.push(EDIT_ADD);
+            j--;
+            continue;
+          }
+          if (j == 0) {
+            edits.push(EDIT_DELETE);
+            i--;
+            continue;
+          }
+          var northWest = distances[i - 1][j - 1];
+          var west = distances[i - 1][j];
+          var north = distances[i][j - 1];
+          var min;
+          if (west < north) min = west < northWest ? west : northWest; else min = north < northWest ? north : northWest;
+          if (min == northWest) {
+            if (northWest == current) {
+              edits.push(EDIT_LEAVE);
+            } else {
+              edits.push(EDIT_UPDATE);
+              current = northWest;
+            }
+            i--;
+            j--;
+          } else if (min == west) {
+            edits.push(EDIT_DELETE);
+            i--;
+            current = west;
+          } else {
+            edits.push(EDIT_ADD);
+            j--;
+            current = north;
+          }
+        }
+        edits.reverse();
+        return edits;
+      },
+      calcSplices: function(current, currentStart, currentEnd, old, oldStart, oldEnd) {
+        var prefixCount = 0;
+        var suffixCount = 0;
+        var minLength = Math.min(currentEnd - currentStart, oldEnd - oldStart);
+        if (currentStart == 0 && oldStart == 0) prefixCount = this.sharedPrefix(current, old, minLength);
+        if (currentEnd == current.length && oldEnd == old.length) suffixCount = this.sharedSuffix(current, old, minLength - prefixCount);
+        currentStart += prefixCount;
+        oldStart += prefixCount;
+        currentEnd -= suffixCount;
+        oldEnd -= suffixCount;
+        if (currentEnd - currentStart == 0 && oldEnd - oldStart == 0) return [];
+        if (currentStart == currentEnd) {
+          var splice = newSplice(currentStart, [], 0);
+          while (oldStart < oldEnd) splice.removed.push(old[oldStart++]);
+          return [ splice ];
+        } else if (oldStart == oldEnd) return [ newSplice(currentStart, [], currentEnd - currentStart) ];
+        var ops = this.spliceOperationsFromEditDistances(this.calcEditDistances(current, currentStart, currentEnd, old, oldStart, oldEnd));
+        var splice = undefined;
+        var splices = [];
+        var index = currentStart;
+        var oldIndex = oldStart;
+        for (var i = 0; i < ops.length; i++) {
+          switch (ops[i]) {
+           case EDIT_LEAVE:
+            if (splice) {
+              splices.push(splice);
+              splice = undefined;
+            }
+            index++;
+            oldIndex++;
+            break;
+
+           case EDIT_UPDATE:
+            if (!splice) splice = newSplice(index, [], 0);
+            splice.addedCount++;
+            index++;
+            splice.removed.push(old[oldIndex]);
+            oldIndex++;
+            break;
+
+           case EDIT_ADD:
+            if (!splice) splice = newSplice(index, [], 0);
+            splice.addedCount++;
+            index++;
+            break;
+
+           case EDIT_DELETE:
+            if (!splice) splice = newSplice(index, [], 0);
+            splice.removed.push(old[oldIndex]);
+            oldIndex++;
+            break;
+          }
+        }
+        if (splice) {
+          splices.push(splice);
+        }
+        return splices;
+      },
+      sharedPrefix: function(current, old, searchLength) {
+        for (var i = 0; i < searchLength; i++) if (!this.equals(current[i], old[i])) return i;
+        return searchLength;
+      },
+      sharedSuffix: function(current, old, searchLength) {
+        var index1 = current.length;
+        var index2 = old.length;
+        var count = 0;
+        while (count < searchLength && this.equals(current[--index1], old[--index2])) count++;
+        return count;
+      },
+      calculateSplices: function(current, previous) {
+        return this.calcSplices(current, 0, current.length, previous, 0, previous.length);
+      },
+      equals: function(currentValue, previousValue) {
+        return currentValue === previousValue;
+      }
+    };
+    scope.ArraySplice = ArraySplice;
+  })(window.ShadowDOMPolyfill);
+  (function(context) {
+    "use strict";
+    var OriginalMutationObserver = window.MutationObserver;
+    var callbacks = [];
+    var pending = false;
+    var timerFunc;
+    function handle() {
+      pending = false;
+      var copies = callbacks.slice(0);
+      callbacks = [];
+      for (var i = 0; i < copies.length; i++) {
+        (0, copies[i])();
+      }
+    }
+    if (OriginalMutationObserver) {
+      var counter = 1;
+      var observer = new OriginalMutationObserver(handle);
+      var textNode = document.createTextNode(counter);
+      observer.observe(textNode, {
+        characterData: true
+      });
+      timerFunc = function() {
+        counter = (counter + 1) % 2;
+        textNode.data = counter;
+      };
+    } else {
+      timerFunc = window.setTimeout;
+    }
+    function setEndOfMicrotask(func) {
+      callbacks.push(func);
+      if (pending) return;
+      pending = true;
+      timerFunc(handle, 0);
+    }
+    context.setEndOfMicrotask = setEndOfMicrotask;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var setEndOfMicrotask = scope.setEndOfMicrotask;
+    var wrapIfNeeded = scope.wrapIfNeeded;
+    var wrappers = scope.wrappers;
+    var registrationsTable = new WeakMap();
+    var globalMutationObservers = [];
+    var isScheduled = false;
+    function scheduleCallback(observer) {
+      if (observer.scheduled_) return;
+      observer.scheduled_ = true;
+      globalMutationObservers.push(observer);
+      if (isScheduled) return;
+      setEndOfMicrotask(notifyObservers);
+      isScheduled = true;
+    }
+    function notifyObservers() {
+      isScheduled = false;
+      while (globalMutationObservers.length) {
+        var notifyList = globalMutationObservers;
+        globalMutationObservers = [];
+        notifyList.sort(function(x, y) {
+          return x.uid_ - y.uid_;
+        });
+        for (var i = 0; i < notifyList.length; i++) {
+          var mo = notifyList[i];
+          mo.scheduled_ = false;
+          var queue = mo.takeRecords();
+          removeTransientObserversFor(mo);
+          if (queue.length) {
+            mo.callback_(queue, mo);
+          }
+        }
+      }
+    }
+    function MutationRecord(type, target) {
+      this.type = type;
+      this.target = target;
+      this.addedNodes = new wrappers.NodeList();
+      this.removedNodes = new wrappers.NodeList();
+      this.previousSibling = null;
+      this.nextSibling = null;
+      this.attributeName = null;
+      this.attributeNamespace = null;
+      this.oldValue = null;
+    }
+    function registerTransientObservers(ancestor, node) {
+      for (;ancestor; ancestor = ancestor.parentNode) {
+        var registrations = registrationsTable.get(ancestor);
+        if (!registrations) continue;
+        for (var i = 0; i < registrations.length; i++) {
+          var registration = registrations[i];
+          if (registration.options.subtree) registration.addTransientObserver(node);
+        }
+      }
+    }
+    function removeTransientObserversFor(observer) {
+      for (var i = 0; i < observer.nodes_.length; i++) {
+        var node = observer.nodes_[i];
+        var registrations = registrationsTable.get(node);
+        if (!registrations) return;
+        for (var j = 0; j < registrations.length; j++) {
+          var registration = registrations[j];
+          if (registration.observer === observer) registration.removeTransientObservers();
+        }
+      }
+    }
+    function enqueueMutation(target, type, data) {
+      var interestedObservers = Object.create(null);
+      var associatedStrings = Object.create(null);
+      for (var node = target; node; node = node.parentNode) {
+        var registrations = registrationsTable.get(node);
+        if (!registrations) continue;
+        for (var j = 0; j < registrations.length; j++) {
+          var registration = registrations[j];
+          var options = registration.options;
+          if (node !== target && !options.subtree) continue;
+          if (type === "attributes" && !options.attributes) continue;
+          if (type === "attributes" && options.attributeFilter && (data.namespace !== null || options.attributeFilter.indexOf(data.name) === -1)) {
+            continue;
+          }
+          if (type === "characterData" && !options.characterData) continue;
+          if (type === "childList" && !options.childList) continue;
+          var observer = registration.observer;
+          interestedObservers[observer.uid_] = observer;
+          if (type === "attributes" && options.attributeOldValue || type === "characterData" && options.characterDataOldValue) {
+            associatedStrings[observer.uid_] = data.oldValue;
+          }
+        }
+      }
+      for (var uid in interestedObservers) {
+        var observer = interestedObservers[uid];
+        var record = new MutationRecord(type, target);
+        if ("name" in data && "namespace" in data) {
+          record.attributeName = data.name;
+          record.attributeNamespace = data.namespace;
+        }
+        if (data.addedNodes) record.addedNodes = data.addedNodes;
+        if (data.removedNodes) record.removedNodes = data.removedNodes;
+        if (data.previousSibling) record.previousSibling = data.previousSibling;
+        if (data.nextSibling) record.nextSibling = data.nextSibling;
+        if (associatedStrings[uid] !== undefined) record.oldValue = associatedStrings[uid];
+        scheduleCallback(observer);
+        observer.records_.push(record);
+      }
+    }
+    var slice = Array.prototype.slice;
+    function MutationObserverOptions(options) {
+      this.childList = !!options.childList;
+      this.subtree = !!options.subtree;
+      if (!("attributes" in options) && ("attributeOldValue" in options || "attributeFilter" in options)) {
+        this.attributes = true;
+      } else {
+        this.attributes = !!options.attributes;
+      }
+      if ("characterDataOldValue" in options && !("characterData" in options)) this.characterData = true; else this.characterData = !!options.characterData;
+      if (!this.attributes && (options.attributeOldValue || "attributeFilter" in options) || !this.characterData && options.characterDataOldValue) {
+        throw new TypeError();
+      }
+      this.characterData = !!options.characterData;
+      this.attributeOldValue = !!options.attributeOldValue;
+      this.characterDataOldValue = !!options.characterDataOldValue;
+      if ("attributeFilter" in options) {
+        if (options.attributeFilter == null || typeof options.attributeFilter !== "object") {
+          throw new TypeError();
+        }
+        this.attributeFilter = slice.call(options.attributeFilter);
+      } else {
+        this.attributeFilter = null;
+      }
+    }
+    var uidCounter = 0;
+    function MutationObserver(callback) {
+      this.callback_ = callback;
+      this.nodes_ = [];
+      this.records_ = [];
+      this.uid_ = ++uidCounter;
+      this.scheduled_ = false;
+    }
+    MutationObserver.prototype = {
+      constructor: MutationObserver,
+      observe: function(target, options) {
+        target = wrapIfNeeded(target);
+        var newOptions = new MutationObserverOptions(options);
+        var registration;
+        var registrations = registrationsTable.get(target);
+        if (!registrations) registrationsTable.set(target, registrations = []);
+        for (var i = 0; i < registrations.length; i++) {
+          if (registrations[i].observer === this) {
+            registration = registrations[i];
+            registration.removeTransientObservers();
+            registration.options = newOptions;
+          }
+        }
+        if (!registration) {
+          registration = new Registration(this, target, newOptions);
+          registrations.push(registration);
+          this.nodes_.push(target);
+        }
+      },
+      disconnect: function() {
+        this.nodes_.forEach(function(node) {
+          var registrations = registrationsTable.get(node);
+          for (var i = 0; i < registrations.length; i++) {
+            var registration = registrations[i];
+            if (registration.observer === this) {
+              registrations.splice(i, 1);
+              break;
+            }
+          }
+        }, this);
+        this.records_ = [];
+      },
+      takeRecords: function() {
+        var copyOfRecords = this.records_;
+        this.records_ = [];
+        return copyOfRecords;
+      }
+    };
+    function Registration(observer, target, options) {
+      this.observer = observer;
+      this.target = target;
+      this.options = options;
+      this.transientObservedNodes = [];
+    }
+    Registration.prototype = {
+      addTransientObserver: function(node) {
+        if (node === this.target) return;
+        scheduleCallback(this.observer);
+        this.transientObservedNodes.push(node);
+        var registrations = registrationsTable.get(node);
+        if (!registrations) registrationsTable.set(node, registrations = []);
+        registrations.push(this);
+      },
+      removeTransientObservers: function() {
+        var transientObservedNodes = this.transientObservedNodes;
+        this.transientObservedNodes = [];
+        for (var i = 0; i < transientObservedNodes.length; i++) {
+          var node = transientObservedNodes[i];
+          var registrations = registrationsTable.get(node);
+          for (var j = 0; j < registrations.length; j++) {
+            if (registrations[j] === this) {
+              registrations.splice(j, 1);
+              break;
+            }
+          }
+        }
+      }
+    };
+    scope.enqueueMutation = enqueueMutation;
+    scope.registerTransientObservers = registerTransientObservers;
+    scope.wrappers.MutationObserver = MutationObserver;
+    scope.wrappers.MutationRecord = MutationRecord;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    function TreeScope(root, parent) {
+      this.root = root;
+      this.parent = parent;
+    }
+    TreeScope.prototype = {
+      get renderer() {
+        if (this.root instanceof scope.wrappers.ShadowRoot) {
+          return scope.getRendererForHost(this.root.host);
+        }
+        return null;
+      },
+      contains: function(treeScope) {
+        for (;treeScope; treeScope = treeScope.parent) {
+          if (treeScope === this) return true;
+        }
+        return false;
+      }
+    };
+    function setTreeScope(node, treeScope) {
+      if (node.treeScope_ !== treeScope) {
+        node.treeScope_ = treeScope;
+        for (var sr = node.shadowRoot; sr; sr = sr.olderShadowRoot) {
+          sr.treeScope_.parent = treeScope;
+        }
+        for (var child = node.firstChild; child; child = child.nextSibling) {
+          setTreeScope(child, treeScope);
+        }
+      }
+    }
+    function getTreeScope(node) {
+      if (node instanceof scope.wrappers.Window) {
+        debugger;
+      }
+      if (node.treeScope_) return node.treeScope_;
+      var parent = node.parentNode;
+      var treeScope;
+      if (parent) treeScope = getTreeScope(parent); else treeScope = new TreeScope(node, null);
+      return node.treeScope_ = treeScope;
+    }
+    scope.TreeScope = TreeScope;
+    scope.getTreeScope = getTreeScope;
+    scope.setTreeScope = setTreeScope;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var forwardMethodsToWrapper = scope.forwardMethodsToWrapper;
+    var getTreeScope = scope.getTreeScope;
+    var mixin = scope.mixin;
+    var registerWrapper = scope.registerWrapper;
+    var setWrapper = scope.setWrapper;
+    var unsafeUnwrap = scope.unsafeUnwrap;
+    var unwrap = scope.unwrap;
+    var wrap = scope.wrap;
+    var wrappers = scope.wrappers;
+    var wrappedFuns = new WeakMap();
+    var listenersTable = new WeakMap();
+    var handledEventsTable = new WeakMap();
+    var currentlyDispatchingEvents = new WeakMap();
+    var targetTable = new WeakMap();
+    var currentTargetTable = new WeakMap();
+    var relatedTargetTable = new WeakMap();
+    var eventPhaseTable = new WeakMap();
+    var stopPropagationTable = new WeakMap();
+    var stopImmediatePropagationTable = new WeakMap();
+    var eventHandlersTable = new WeakMap();
+    var eventPathTable = new WeakMap();
+    function isShadowRoot(node) {
+      return node instanceof wrappers.ShadowRoot;
+    }
+    function rootOfNode(node) {
+      return getTreeScope(node).root;
+    }
+    function getEventPath(node, event) {
+      var path = [];
+      var current = node;
+      path.push(current);
+      while (current) {
+        var destinationInsertionPoints = getDestinationInsertionPoints(current);
+        if (destinationInsertionPoints && destinationInsertionPoints.length > 0) {
+          for (var i = 0; i < destinationInsertionPoints.length; i++) {
+            var insertionPoint = destinationInsertionPoints[i];
+            if (isShadowInsertionPoint(insertionPoint)) {
+              var shadowRoot = rootOfNode(insertionPoint);
+              var olderShadowRoot = shadowRoot.olderShadowRoot;
+              if (olderShadowRoot) path.push(olderShadowRoot);
+            }
+            path.push(insertionPoint);
+          }
+          current = destinationInsertionPoints[destinationInsertionPoints.length - 1];
+        } else {
+          if (isShadowRoot(current)) {
+            if (inSameTree(node, current) && eventMustBeStopped(event)) {
+              break;
+            }
+            current = current.host;
+            path.push(current);
+          } else {
+            current = current.parentNode;
+            if (current) path.push(current);
+          }
+        }
+      }
+      return path;
+    }
+    function eventMustBeStopped(event) {
+      if (!event) return false;
+      switch (event.type) {
+       case "abort":
+       case "error":
+       case "select":
+       case "change":
+       case "load":
+       case "reset":
+       case "resize":
+       case "scroll":
+       case "selectstart":
+        return true;
+      }
+      return false;
+    }
+    function isShadowInsertionPoint(node) {
+      return node instanceof HTMLShadowElement;
+    }
+    function getDestinationInsertionPoints(node) {
+      return scope.getDestinationInsertionPoints(node);
+    }
+    function eventRetargetting(path, currentTarget) {
+      if (path.length === 0) return currentTarget;
+      if (currentTarget instanceof wrappers.Window) currentTarget = currentTarget.document;
+      var currentTargetTree = getTreeScope(currentTarget);
+      var originalTarget = path[0];
+      var originalTargetTree = getTreeScope(originalTarget);
+      var relativeTargetTree = lowestCommonInclusiveAncestor(currentTargetTree, originalTargetTree);
+      for (var i = 0; i < path.length; i++) {
+        var node = path[i];
+        if (getTreeScope(node) === relativeTargetTree) return node;
+      }
+      return path[path.length - 1];
+    }
+    function getTreeScopeAncestors(treeScope) {
+      var ancestors = [];
+      for (;treeScope; treeScope = treeScope.parent) {
+        ancestors.push(treeScope);
+      }
+      return ancestors;
+    }
+    function lowestCommonInclusiveAncestor(tsA, tsB) {
+      var ancestorsA = getTreeScopeAncestors(tsA);
+      var ancestorsB = getTreeScopeAncestors(tsB);
+      var result = null;
+      while (ancestorsA.length > 0 && ancestorsB.length > 0) {
+        var a = ancestorsA.pop();
+        var b = ancestorsB.pop();
+        if (a === b) result = a; else break;
+      }
+      return result;
+    }
+    function getTreeScopeRoot(ts) {
+      if (!ts.parent) return ts;
+      return getTreeScopeRoot(ts.parent);
+    }
+    function relatedTargetResolution(event, currentTarget, relatedTarget) {
+      if (currentTarget instanceof wrappers.Window) currentTarget = currentTarget.document;
+      var currentTargetTree = getTreeScope(currentTarget);
+      var relatedTargetTree = getTreeScope(relatedTarget);
+      var relatedTargetEventPath = getEventPath(relatedTarget, event);
+      var lowestCommonAncestorTree;
+      var lowestCommonAncestorTree = lowestCommonInclusiveAncestor(currentTargetTree, relatedTargetTree);
+      if (!lowestCommonAncestorTree) lowestCommonAncestorTree = relatedTargetTree.root;
+      for (var commonAncestorTree = lowestCommonAncestorTree; commonAncestorTree; commonAncestorTree = commonAncestorTree.parent) {
+        var adjustedRelatedTarget;
+        for (var i = 0; i < relatedTargetEventPath.length; i++) {
+          var node = relatedTargetEventPath[i];
+          if (getTreeScope(node) === commonAncestorTree) return node;
+        }
+      }
+      return null;
+    }
+    function inSameTree(a, b) {
+      return getTreeScope(a) === getTreeScope(b);
+    }
+    var NONE = 0;
+    var CAPTURING_PHASE = 1;
+    var AT_TARGET = 2;
+    var BUBBLING_PHASE = 3;
+    var pendingError;
+    function dispatchOriginalEvent(originalEvent) {
+      if (handledEventsTable.get(originalEvent)) return;
+      handledEventsTable.set(originalEvent, true);
+      dispatchEvent(wrap(originalEvent), wrap(originalEvent.target));
+      if (pendingError) {
+        var err = pendingError;
+        pendingError = null;
+        throw err;
+      }
+    }
+    function isLoadLikeEvent(event) {
+      switch (event.type) {
+       case "load":
+       case "beforeunload":
+       case "unload":
+        return true;
+      }
+      return false;
+    }
+    function dispatchEvent(event, originalWrapperTarget) {
+      if (currentlyDispatchingEvents.get(event)) throw new Error("InvalidStateError");
+      currentlyDispatchingEvents.set(event, true);
+      scope.renderAllPending();
+      var eventPath;
+      var overrideTarget;
+      var win;
+      if (isLoadLikeEvent(event) && !event.bubbles) {
+        var doc = originalWrapperTarget;
+        if (doc instanceof wrappers.Document && (win = doc.defaultView)) {
+          overrideTarget = doc;
+          eventPath = [];
+        }
+      }
+      if (!eventPath) {
+        if (originalWrapperTarget instanceof wrappers.Window) {
+          win = originalWrapperTarget;
+          eventPath = [];
+        } else {
+          eventPath = getEventPath(originalWrapperTarget, event);
+          if (!isLoadLikeEvent(event)) {
+            var doc = eventPath[eventPath.length - 1];
+            if (doc instanceof wrappers.Document) win = doc.defaultView;
+          }
+        }
+      }
+      eventPathTable.set(event, eventPath);
+      if (dispatchCapturing(event, eventPath, win, overrideTarget)) {
+        if (dispatchAtTarget(event, eventPath, win, overrideTarget)) {
+          dispatchBubbling(event, eventPath, win, overrideTarget);
+        }
+      }
+      eventPhaseTable.set(event, NONE);
+      currentTargetTable.delete(event, null);
+      currentlyDispatchingEvents.delete(event);
+      return event.defaultPrevented;
+    }
+    function dispatchCapturing(event, eventPath, win, overrideTarget) {
+      var phase = CAPTURING_PHASE;
+      if (win) {
+        if (!invoke(win, event, phase, eventPath, overrideTarget)) return false;
+      }
+      for (var i = eventPath.length - 1; i > 0; i--) {
+        if (!invoke(eventPath[i], event, phase, eventPath, overrideTarget)) return false;
+      }
+      return true;
+    }
+    function dispatchAtTarget(event, eventPath, win, overrideTarget) {
+      var phase = AT_TARGET;
+      var currentTarget = eventPath[0] || win;
+      return invoke(currentTarget, event, phase, eventPath, overrideTarget);
+    }
+    function dispatchBubbling(event, eventPath, win, overrideTarget) {
+      var phase = BUBBLING_PHASE;
+      for (var i = 1; i < eventPath.length; i++) {
+        if (!invoke(eventPath[i], event, phase, eventPath, overrideTarget)) return;
+      }
+      if (win && eventPath.length > 0) {
+        invoke(win, event, phase, eventPath, overrideTarget);
+      }
+    }
+    function invoke(currentTarget, event, phase, eventPath, overrideTarget) {
+      var listeners = listenersTable.get(currentTarget);
+      if (!listeners) return true;
+      var target = overrideTarget || eventRetargetting(eventPath, currentTarget);
+      if (target === currentTarget) {
+        if (phase === CAPTURING_PHASE) return true;
+        if (phase === BUBBLING_PHASE) phase = AT_TARGET;
+      } else if (phase === BUBBLING_PHASE && !event.bubbles) {
+        return true;
+      }
+      if ("relatedTarget" in event) {
+        var originalEvent = unwrap(event);
+        var unwrappedRelatedTarget = originalEvent.relatedTarget;
+        if (unwrappedRelatedTarget) {
+          if (unwrappedRelatedTarget instanceof Object && unwrappedRelatedTarget.addEventListener) {
+            var relatedTarget = wrap(unwrappedRelatedTarget);
+            var adjusted = relatedTargetResolution(event, currentTarget, relatedTarget);
+            if (adjusted === target) return true;
+          } else {
+            adjusted = null;
+          }
+          relatedTargetTable.set(event, adjusted);
+        }
+      }
+      eventPhaseTable.set(event, phase);
+      var type = event.type;
+      var anyRemoved = false;
+      targetTable.set(event, target);
+      currentTargetTable.set(event, currentTarget);
+      listeners.depth++;
+      for (var i = 0, len = listeners.length; i < len; i++) {
+        var listener = listeners[i];
+        if (listener.removed) {
+          anyRemoved = true;
+          continue;
+        }
+        if (listener.type !== type || !listener.capture && phase === CAPTURING_PHASE || listener.capture && phase === BUBBLING_PHASE) {
+          continue;
+        }
+        try {
+          if (typeof listener.handler === "function") listener.handler.call(currentTarget, event); else listener.handler.handleEvent(event);
+          if (stopImmediatePropagationTable.get(event)) return false;
+        } catch (ex) {
+          if (!pendingError) pendingError = ex;
+        }
+      }
+      listeners.depth--;
+      if (anyRemoved && listeners.depth === 0) {
+        var copy = listeners.slice();
+        listeners.length = 0;
+        for (var i = 0; i < copy.length; i++) {
+          if (!copy[i].removed) listeners.push(copy[i]);
+        }
+      }
+      return !stopPropagationTable.get(event);
+    }
+    function Listener(type, handler, capture) {
+      this.type = type;
+      this.handler = handler;
+      this.capture = Boolean(capture);
+    }
+    Listener.prototype = {
+      equals: function(that) {
+        return this.handler === that.handler && this.type === that.type && this.capture === that.capture;
+      },
+      get removed() {
+        return this.handler === null;
+      },
+      remove: function() {
+        this.handler = null;
+      }
+    };
+    var OriginalEvent = window.Event;
+    OriginalEvent.prototype.polymerBlackList_ = {
+      returnValue: true,
+      keyLocation: true
+    };
+    function Event(type, options) {
+      if (type instanceof OriginalEvent) {
+        var impl = type;
+        if (!OriginalBeforeUnloadEvent && impl.type === "beforeunload" && !(this instanceof BeforeUnloadEvent)) {
+          return new BeforeUnloadEvent(impl);
+        }
+        setWrapper(impl, this);
+      } else {
+        return wrap(constructEvent(OriginalEvent, "Event", type, options));
+      }
+    }
+    Event.prototype = {
+      get target() {
+        return targetTable.get(this);
+      },
+      get currentTarget() {
+        return currentTargetTable.get(this);
+      },
+      get eventPhase() {
+        return eventPhaseTable.get(this);
+      },
+      get path() {
+        var eventPath = eventPathTable.get(this);
+        if (!eventPath) return [];
+        return eventPath.slice();
+      },
+      stopPropagation: function() {
+        stopPropagationTable.set(this, true);
+      },
+      stopImmediatePropagation: function() {
+        stopPropagationTable.set(this, true);
+        stopImmediatePropagationTable.set(this, true);
+      }
+    };
+    registerWrapper(OriginalEvent, Event, document.createEvent("Event"));
+    function unwrapOptions(options) {
+      if (!options || !options.relatedTarget) return options;
+      return Object.create(options, {
+        relatedTarget: {
+          value: unwrap(options.relatedTarget)
+        }
+      });
+    }
+    function registerGenericEvent(name, SuperEvent, prototype) {
+      var OriginalEvent = window[name];
+      var GenericEvent = function(type, options) {
+        if (type instanceof OriginalEvent) setWrapper(type, this); else return wrap(constructEvent(OriginalEvent, name, type, options));
+      };
+      GenericEvent.prototype = Object.create(SuperEvent.prototype);
+      if (prototype) mixin(GenericEvent.prototype, prototype);
+      if (OriginalEvent) {
+        try {
+          registerWrapper(OriginalEvent, GenericEvent, new OriginalEvent("temp"));
+        } catch (ex) {
+          registerWrapper(OriginalEvent, GenericEvent, document.createEvent(name));
+        }
+      }
+      return GenericEvent;
+    }
+    var UIEvent = registerGenericEvent("UIEvent", Event);
+    var CustomEvent = registerGenericEvent("CustomEvent", Event);
+    var relatedTargetProto = {
+      get relatedTarget() {
+        var relatedTarget = relatedTargetTable.get(this);
+        if (relatedTarget !== undefined) return relatedTarget;
+        return wrap(unwrap(this).relatedTarget);
+      }
+    };
+    function getInitFunction(name, relatedTargetIndex) {
+      return function() {
+        arguments[relatedTargetIndex] = unwrap(arguments[relatedTargetIndex]);
+        var impl = unwrap(this);
+        impl[name].apply(impl, arguments);
+      };
+    }
+    var mouseEventProto = mixin({
+      initMouseEvent: getInitFunction("initMouseEvent", 14)
+    }, relatedTargetProto);
+    var focusEventProto = mixin({
+      initFocusEvent: getInitFunction("initFocusEvent", 5)
+    }, relatedTargetProto);
+    var MouseEvent = registerGenericEvent("MouseEvent", UIEvent, mouseEventProto);
+    var FocusEvent = registerGenericEvent("FocusEvent", UIEvent, focusEventProto);
+    var defaultInitDicts = Object.create(null);
+    var supportsEventConstructors = function() {
+      try {
+        new window.FocusEvent("focus");
+      } catch (ex) {
+        return false;
+      }
+      return true;
+    }();
+    function constructEvent(OriginalEvent, name, type, options) {
+      if (supportsEventConstructors) return new OriginalEvent(type, unwrapOptions(options));
+      var event = unwrap(document.createEvent(name));
+      var defaultDict = defaultInitDicts[name];
+      var args = [ type ];
+      Object.keys(defaultDict).forEach(function(key) {
+        var v = options != null && key in options ? options[key] : defaultDict[key];
+        if (key === "relatedTarget") v = unwrap(v);
+        args.push(v);
+      });
+      event["init" + name].apply(event, args);
+      return event;
+    }
+    if (!supportsEventConstructors) {
+      var configureEventConstructor = function(name, initDict, superName) {
+        if (superName) {
+          var superDict = defaultInitDicts[superName];
+          initDict = mixin(mixin({}, superDict), initDict);
+        }
+        defaultInitDicts[name] = initDict;
+      };
+      configureEventConstructor("Event", {
+        bubbles: false,
+        cancelable: false
+      });
+      configureEventConstructor("CustomEvent", {
+        detail: null
+      }, "Event");
+      configureEventConstructor("UIEvent", {
+        view: null,
+        detail: 0
+      }, "Event");
+      configureEventConstructor("MouseEvent", {
+        screenX: 0,
+        screenY: 0,
+        clientX: 0,
+        clientY: 0,
+        ctrlKey: false,
+        altKey: false,
+        shiftKey: false,
+        metaKey: false,
+        button: 0,
+        relatedTarget: null
+      }, "UIEvent");
+      configureEventConstructor("FocusEvent", {
+        relatedTarget: null
+      }, "UIEvent");
+    }
+    var OriginalBeforeUnloadEvent = window.BeforeUnloadEvent;
+    function BeforeUnloadEvent(impl) {
+      Event.call(this, impl);
+    }
+    BeforeUnloadEvent.prototype = Object.create(Event.prototype);
+    mixin(BeforeUnloadEvent.prototype, {
+      get returnValue() {
+        return unsafeUnwrap(this).returnValue;
+      },
+      set returnValue(v) {
+        unsafeUnwrap(this).returnValue = v;
+      }
+    });
+    if (OriginalBeforeUnloadEvent) registerWrapper(OriginalBeforeUnloadEvent, BeforeUnloadEvent);
+    function isValidListener(fun) {
+      if (typeof fun === "function") return true;
+      return fun && fun.handleEvent;
+    }
+    function isMutationEvent(type) {
+      switch (type) {
+       case "DOMAttrModified":
+       case "DOMAttributeNameChanged":
+       case "DOMCharacterDataModified":
+       case "DOMElementNameChanged":
+       case "DOMNodeInserted":
+       case "DOMNodeInsertedIntoDocument":
+       case "DOMNodeRemoved":
+       case "DOMNodeRemovedFromDocument":
+       case "DOMSubtreeModified":
+        return true;
+      }
+      return false;
+    }
+    var OriginalEventTarget = window.EventTarget;
+    function EventTarget(impl) {
+      setWrapper(impl, this);
+    }
+    var methodNames = [ "addEventListener", "removeEventListener", "dispatchEvent" ];
+    [ Node, Window ].forEach(function(constructor) {
+      var p = constructor.prototype;
+      methodNames.forEach(function(name) {
+        Object.defineProperty(p, name + "_", {
+          value: p[name]
+        });
+      });
+    });
+    function getTargetToListenAt(wrapper) {
+      if (wrapper instanceof wrappers.ShadowRoot) wrapper = wrapper.host;
+      return unwrap(wrapper);
+    }
+    EventTarget.prototype = {
+      addEventListener: function(type, fun, capture) {
+        if (!isValidListener(fun) || isMutationEvent(type)) return;
+        var listener = new Listener(type, fun, capture);
+        var listeners = listenersTable.get(this);
+        if (!listeners) {
+          listeners = [];
+          listeners.depth = 0;
+          listenersTable.set(this, listeners);
+        } else {
+          for (var i = 0; i < listeners.length; i++) {
+            if (listener.equals(listeners[i])) return;
+          }
+        }
+        listeners.push(listener);
+        var target = getTargetToListenAt(this);
+        target.addEventListener_(type, dispatchOriginalEvent, true);
+      },
+      removeEventListener: function(type, fun, capture) {
+        capture = Boolean(capture);
+        var listeners = listenersTable.get(this);
+        if (!listeners) return;
+        var count = 0, found = false;
+        for (var i = 0; i < listeners.length; i++) {
+          if (listeners[i].type === type && listeners[i].capture === capture) {
+            count++;
+            if (listeners[i].handler === fun) {
+              found = true;
+              listeners[i].remove();
+            }
+          }
+        }
+        if (found && count === 1) {
+          var target = getTargetToListenAt(this);
+          target.removeEventListener_(type, dispatchOriginalEvent, true);
+        }
+      },
+      dispatchEvent: function(event) {
+        var nativeEvent = unwrap(event);
+        var eventType = nativeEvent.type;
+        handledEventsTable.set(nativeEvent, false);
+        scope.renderAllPending();
+        var tempListener;
+        if (!hasListenerInAncestors(this, eventType)) {
+          tempListener = function() {};
+          this.addEventListener(eventType, tempListener, true);
+        }
+        try {
+          return unwrap(this).dispatchEvent_(nativeEvent);
+        } finally {
+          if (tempListener) this.removeEventListener(eventType, tempListener, true);
+        }
+      }
+    };
+    function hasListener(node, type) {
+      var listeners = listenersTable.get(node);
+      if (listeners) {
+        for (var i = 0; i < listeners.length; i++) {
+          if (!listeners[i].removed && listeners[i].type === type) return true;
+        }
+      }
+      return false;
+    }
+    function hasListenerInAncestors(target, type) {
+      for (var node = unwrap(target); node; node = node.parentNode) {
+        if (hasListener(wrap(node), type)) return true;
+      }
+      return false;
+    }
+    if (OriginalEventTarget) registerWrapper(OriginalEventTarget, EventTarget);
+    function wrapEventTargetMethods(constructors) {
+      forwardMethodsToWrapper(constructors, methodNames);
+    }
+    var originalElementFromPoint = document.elementFromPoint;
+    function elementFromPoint(self, document, x, y) {
+      scope.renderAllPending();
+      var element = wrap(originalElementFromPoint.call(unsafeUnwrap(document), x, y));
+      if (!element) return null;
+      var path = getEventPath(element, null);
+      var idx = path.lastIndexOf(self);
+      if (idx == -1) return null; else path = path.slice(0, idx);
+      return eventRetargetting(path, self);
+    }
+    function getEventHandlerGetter(name) {
+      return function() {
+        var inlineEventHandlers = eventHandlersTable.get(this);
+        return inlineEventHandlers && inlineEventHandlers[name] && inlineEventHandlers[name].value || null;
+      };
+    }
+    function getEventHandlerSetter(name) {
+      var eventType = name.slice(2);
+      return function(value) {
+        var inlineEventHandlers = eventHandlersTable.get(this);
+        if (!inlineEventHandlers) {
+          inlineEventHandlers = Object.create(null);
+          eventHandlersTable.set(this, inlineEventHandlers);
+        }
+        var old = inlineEventHandlers[name];
+        if (old) this.removeEventListener(eventType, old.wrapped, false);
+        if (typeof value === "function") {
+          var wrapped = function(e) {
+            var rv = value.call(this, e);
+            if (rv === false) e.preventDefault(); else if (name === "onbeforeunload" && typeof rv === "string") e.returnValue = rv;
+          };
+          this.addEventListener(eventType, wrapped, false);
+          inlineEventHandlers[name] = {
+            value: value,
+            wrapped: wrapped
+          };
+        }
+      };
+    }
+    scope.elementFromPoint = elementFromPoint;
+    scope.getEventHandlerGetter = getEventHandlerGetter;
+    scope.getEventHandlerSetter = getEventHandlerSetter;
+    scope.wrapEventTargetMethods = wrapEventTargetMethods;
+    scope.wrappers.BeforeUnloadEvent = BeforeUnloadEvent;
+    scope.wrappers.CustomEvent = CustomEvent;
+    scope.wrappers.Event = Event;
+    scope.wrappers.EventTarget = EventTarget;
+    scope.wrappers.FocusEvent = FocusEvent;
+    scope.wrappers.MouseEvent = MouseEvent;
+    scope.wrappers.UIEvent = UIEvent;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var UIEvent = scope.wrappers.UIEvent;
+    var mixin = scope.mixin;
+    var registerWrapper = scope.registerWrapper;
+    var setWrapper = scope.setWrapper;
+    var unsafeUnwrap = scope.unsafeUnwrap;
+    var wrap = scope.wrap;
+    var OriginalTouchEvent = window.TouchEvent;
+    if (!OriginalTouchEvent) return;
+    var nativeEvent;
+    try {
+      nativeEvent = document.createEvent("TouchEvent");
+    } catch (ex) {
+      return;
+    }
+    var nonEnumDescriptor = {
+      enumerable: false
+    };
+    function nonEnum(obj, prop) {
+      Object.defineProperty(obj, prop, nonEnumDescriptor);
+    }
+    function Touch(impl) {
+      setWrapper(impl, this);
+    }
+    Touch.prototype = {
+      get target() {
+        return wrap(unsafeUnwrap(this).target);
+      }
+    };
+    var descr = {
+      configurable: true,
+      enumerable: true,
+      get: null
+    };
+    [ "clientX", "clientY", "screenX", "screenY", "pageX", "pageY", "identifier", "webkitRadiusX", "webkitRadiusY", "webkitRotationAngle", "webkitForce" ].forEach(function(name) {
+      descr.get = function() {
+        return unsafeUnwrap(this)[name];
+      };
+      Object.defineProperty(Touch.prototype, name, descr);
+    });
+    function TouchList() {
+      this.length = 0;
+      nonEnum(this, "length");
+    }
+    TouchList.prototype = {
+      item: function(index) {
+        return this[index];
+      }
+    };
+    function wrapTouchList(nativeTouchList) {
+      var list = new TouchList();
+      for (var i = 0; i < nativeTouchList.length; i++) {
+        list[i] = new Touch(nativeTouchList[i]);
+      }
+      list.length = i;
+      return list;
+    }
+    function TouchEvent(impl) {
+      UIEvent.call(this, impl);
+    }
+    TouchEvent.prototype = Object.create(UIEvent.prototype);
+    mixin(TouchEvent.prototype, {
+      get touches() {
+        return wrapTouchList(unsafeUnwrap(this).touches);
+      },
+      get targetTouches() {
+        return wrapTouchList(unsafeUnwrap(this).targetTouches);
+      },
+      get changedTouches() {
+        return wrapTouchList(unsafeUnwrap(this).changedTouches);
+      },
+      initTouchEvent: function() {
+        throw new Error("Not implemented");
+      }
+    });
+    registerWrapper(OriginalTouchEvent, TouchEvent, nativeEvent);
+    scope.wrappers.Touch = Touch;
+    scope.wrappers.TouchEvent = TouchEvent;
+    scope.wrappers.TouchList = TouchList;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var unsafeUnwrap = scope.unsafeUnwrap;
+    var wrap = scope.wrap;
+    var nonEnumDescriptor = {
+      enumerable: false
+    };
+    function nonEnum(obj, prop) {
+      Object.defineProperty(obj, prop, nonEnumDescriptor);
+    }
+    function NodeList() {
+      this.length = 0;
+      nonEnum(this, "length");
+    }
+    NodeList.prototype = {
+      item: function(index) {
+        return this[index];
+      }
+    };
+    nonEnum(NodeList.prototype, "item");
+    function wrapNodeList(list) {
+      if (list == null) return list;
+      var wrapperList = new NodeList();
+      for (var i = 0, length = list.length; i < length; i++) {
+        wrapperList[i] = wrap(list[i]);
+      }
+      wrapperList.length = length;
+      return wrapperList;
+    }
+    function addWrapNodeListMethod(wrapperConstructor, name) {
+      wrapperConstructor.prototype[name] = function() {
+        return wrapNodeList(unsafeUnwrap(this)[name].apply(unsafeUnwrap(this), arguments));
+      };
+    }
+    scope.wrappers.NodeList = NodeList;
+    scope.addWrapNodeListMethod = addWrapNodeListMethod;
+    scope.wrapNodeList = wrapNodeList;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    scope.wrapHTMLCollection = scope.wrapNodeList;
+    scope.wrappers.HTMLCollection = scope.wrappers.NodeList;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var EventTarget = scope.wrappers.EventTarget;
+    var NodeList = scope.wrappers.NodeList;
+    var TreeScope = scope.TreeScope;
+    var assert = scope.assert;
+    var defineWrapGetter = scope.defineWrapGetter;
+    var enqueueMutation = scope.enqueueMutation;
+    var getTreeScope = scope.getTreeScope;
+    var isWrapper = scope.isWrapper;
+    var mixin = scope.mixin;
+    var registerTransientObservers = scope.registerTransientObservers;
+    var registerWrapper = scope.registerWrapper;
+    var setTreeScope = scope.setTreeScope;
+    var unsafeUnwrap = scope.unsafeUnwrap;
+    var unwrap = scope.unwrap;
+    var unwrapIfNeeded = scope.unwrapIfNeeded;
+    var wrap = scope.wrap;
+    var wrapIfNeeded = scope.wrapIfNeeded;
+    var wrappers = scope.wrappers;
+    function assertIsNodeWrapper(node) {
+      assert(node instanceof Node);
+    }
+    function createOneElementNodeList(node) {
+      var nodes = new NodeList();
+      nodes[0] = node;
+      nodes.length = 1;
+      return nodes;
+    }
+    var surpressMutations = false;
+    function enqueueRemovalForInsertedNodes(node, parent, nodes) {
+      enqueueMutation(parent, "childList", {
+        removedNodes: nodes,
+        previousSibling: node.previousSibling,
+        nextSibling: node.nextSibling
+      });
+    }
+    function enqueueRemovalForInsertedDocumentFragment(df, nodes) {
+      enqueueMutation(df, "childList", {
+        removedNodes: nodes
+      });
+    }
+    function collectNodes(node, parentNode, previousNode, nextNode) {
+      if (node instanceof DocumentFragment) {
+        var nodes = collectNodesForDocumentFragment(node);
+        surpressMutations = true;
+        for (var i = nodes.length - 1; i >= 0; i--) {
+          node.removeChild(nodes[i]);
+          nodes[i].parentNode_ = parentNode;
+        }
+        surpressMutations = false;
+        for (var i = 0; i < nodes.length; i++) {
+          nodes[i].previousSibling_ = nodes[i - 1] || previousNode;
+          nodes[i].nextSibling_ = nodes[i + 1] || nextNode;
+        }
+        if (previousNode) previousNode.nextSibling_ = nodes[0];
+        if (nextNode) nextNode.previousSibling_ = nodes[nodes.length - 1];
+        return nodes;
+      }
+      var nodes = createOneElementNodeList(node);
+      var oldParent = node.parentNode;
+      if (oldParent) {
+        oldParent.removeChild(node);
+      }
+      node.parentNode_ = parentNode;
+      node.previousSibling_ = previousNode;
+      node.nextSibling_ = nextNode;
+      if (previousNode) previousNode.nextSibling_ = node;
+      if (nextNode) nextNode.previousSibling_ = node;
+      return nodes;
+    }
+    function collectNodesNative(node) {
+      if (node instanceof DocumentFragment) return collectNodesForDocumentFragment(node);
+      var nodes = createOneElementNodeList(node);
+      var oldParent = node.parentNode;
+      if (oldParent) enqueueRemovalForInsertedNodes(node, oldParent, nodes);
+      return nodes;
+    }
+    function collectNodesForDocumentFragment(node) {
+      var nodes = new NodeList();
+      var i = 0;
+      for (var child = node.firstChild; child; child = child.nextSibling) {
+        nodes[i++] = child;
+      }
+      nodes.length = i;
+      enqueueRemovalForInsertedDocumentFragment(node, nodes);
+      return nodes;
+    }
+    function snapshotNodeList(nodeList) {
+      return nodeList;
+    }
+    function nodeWasAdded(node, treeScope) {
+      setTreeScope(node, treeScope);
+      node.nodeIsInserted_();
+    }
+    function nodesWereAdded(nodes, parent) {
+      var treeScope = getTreeScope(parent);
+      for (var i = 0; i < nodes.length; i++) {
+        nodeWasAdded(nodes[i], treeScope);
+      }
+    }
+    function nodeWasRemoved(node) {
+      setTreeScope(node, new TreeScope(node, null));
+    }
+    function nodesWereRemoved(nodes) {
+      for (var i = 0; i < nodes.length; i++) {
+        nodeWasRemoved(nodes[i]);
+      }
+    }
+    function ensureSameOwnerDocument(parent, child) {
+      var ownerDoc = parent.nodeType === Node.DOCUMENT_NODE ? parent : parent.ownerDocument;
+      if (ownerDoc !== child.ownerDocument) ownerDoc.adoptNode(child);
+    }
+    function adoptNodesIfNeeded(owner, nodes) {
+      if (!nodes.length) return;
+      var ownerDoc = owner.ownerDocument;
+      if (ownerDoc === nodes[0].ownerDocument) return;
+      for (var i = 0; i < nodes.length; i++) {
+        scope.adoptNodeNoRemove(nodes[i], ownerDoc);
+      }
+    }
+    function unwrapNodesForInsertion(owner, nodes) {
+      adoptNodesIfNeeded(owner, nodes);
+      var length = nodes.length;
+      if (length === 1) return unwrap(nodes[0]);
+      var df = unwrap(owner.ownerDocument.createDocumentFragment());
+      for (var i = 0; i < length; i++) {
+        df.appendChild(unwrap(nodes[i]));
+      }
+      return df;
+    }
+    function clearChildNodes(wrapper) {
+      if (wrapper.firstChild_ !== undefined) {
+        var child = wrapper.firstChild_;
+        while (child) {
+          var tmp = child;
+          child = child.nextSibling_;
+          tmp.parentNode_ = tmp.previousSibling_ = tmp.nextSibling_ = undefined;
+        }
+      }
+      wrapper.firstChild_ = wrapper.lastChild_ = undefined;
+    }
+    function removeAllChildNodes(wrapper) {
+      if (wrapper.invalidateShadowRenderer()) {
+        var childWrapper = wrapper.firstChild;
+        while (childWrapper) {
+          assert(childWrapper.parentNode === wrapper);
+          var nextSibling = childWrapper.nextSibling;
+          var childNode = unwrap(childWrapper);
+          var parentNode = childNode.parentNode;
+          if (parentNode) originalRemoveChild.call(parentNode, childNode);
+          childWrapper.previousSibling_ = childWrapper.nextSibling_ = childWrapper.parentNode_ = null;
+          childWrapper = nextSibling;
+        }
+        wrapper.firstChild_ = wrapper.lastChild_ = null;
+      } else {
+        var node = unwrap(wrapper);
+        var child = node.firstChild;
+        var nextSibling;
+        while (child) {
+          nextSibling = child.nextSibling;
+          originalRemoveChild.call(node, child);
+          child = nextSibling;
+        }
+      }
+    }
+    function invalidateParent(node) {
+      var p = node.parentNode;
+      return p && p.invalidateShadowRenderer();
+    }
+    function cleanupNodes(nodes) {
+      for (var i = 0, n; i < nodes.length; i++) {
+        n = nodes[i];
+        n.parentNode.removeChild(n);
+      }
+    }
+    var originalImportNode = document.importNode;
+    var originalCloneNode = window.Node.prototype.cloneNode;
+    function cloneNode(node, deep, opt_doc) {
+      var clone;
+      if (opt_doc) clone = wrap(originalImportNode.call(opt_doc, unsafeUnwrap(node), false)); else clone = wrap(originalCloneNode.call(unsafeUnwrap(node), false));
+      if (deep) {
+        for (var child = node.firstChild; child; child = child.nextSibling) {
+          clone.appendChild(cloneNode(child, true, opt_doc));
+        }
+        if (node instanceof wrappers.HTMLTemplateElement) {
+          var cloneContent = clone.content;
+          for (var child = node.content.firstChild; child; child = child.nextSibling) {
+            cloneContent.appendChild(cloneNode(child, true, opt_doc));
+          }
+        }
+      }
+      return clone;
+    }
+    function contains(self, child) {
+      if (!child || getTreeScope(self) !== getTreeScope(child)) return false;
+      for (var node = child; node; node = node.parentNode) {
+        if (node === self) return true;
+      }
+      return false;
+    }
+    var OriginalNode = window.Node;
+    function Node(original) {
+      assert(original instanceof OriginalNode);
+      EventTarget.call(this, original);
+      this.parentNode_ = undefined;
+      this.firstChild_ = undefined;
+      this.lastChild_ = undefined;
+      this.nextSibling_ = undefined;
+      this.previousSibling_ = undefined;
+      this.treeScope_ = undefined;
+    }
+    var OriginalDocumentFragment = window.DocumentFragment;
+    var originalAppendChild = OriginalNode.prototype.appendChild;
+    var originalCompareDocumentPosition = OriginalNode.prototype.compareDocumentPosition;
+    var originalInsertBefore = OriginalNode.prototype.insertBefore;
+    var originalRemoveChild = OriginalNode.prototype.removeChild;
+    var originalReplaceChild = OriginalNode.prototype.replaceChild;
+    var isIe = /Trident|Edge/.test(navigator.userAgent);
+    var removeChildOriginalHelper = isIe ? function(parent, child) {
+      try {
+        originalRemoveChild.call(parent, child);
+      } catch (ex) {
+        if (!(parent instanceof OriginalDocumentFragment)) throw ex;
+      }
+    } : function(parent, child) {
+      originalRemoveChild.call(parent, child);
+    };
+    Node.prototype = Object.create(EventTarget.prototype);
+    mixin(Node.prototype, {
+      appendChild: function(childWrapper) {
+        return this.insertBefore(childWrapper, null);
+      },
+      insertBefore: function(childWrapper, refWrapper) {
+        assertIsNodeWrapper(childWrapper);
+        var refNode;
+        if (refWrapper) {
+          if (isWrapper(refWrapper)) {
+            refNode = unwrap(refWrapper);
+          } else {
+            refNode = refWrapper;
+            refWrapper = wrap(refNode);
+          }
+        } else {
+          refWrapper = null;
+          refNode = null;
+        }
+        refWrapper && assert(refWrapper.parentNode === this);
+        var nodes;
+        var previousNode = refWrapper ? refWrapper.previousSibling : this.lastChild;
+        var useNative = !this.invalidateShadowRenderer() && !invalidateParent(childWrapper);
+        if (useNative) nodes = collectNodesNative(childWrapper); else nodes = collectNodes(childWrapper, this, previousNode, refWrapper);
+        if (useNative) {
+          ensureSameOwnerDocument(this, childWrapper);
+          clearChildNodes(this);
+          originalInsertBefore.call(unsafeUnwrap(this), unwrap(childWrapper), refNode);
+        } else {
+          if (!previousNode) this.firstChild_ = nodes[0];
+          if (!refWrapper) {
+            this.lastChild_ = nodes[nodes.length - 1];
+            if (this.firstChild_ === undefined) this.firstChild_ = this.firstChild;
+          }
+          var parentNode = refNode ? refNode.parentNode : unsafeUnwrap(this);
+          if (parentNode) {
+            originalInsertBefore.call(parentNode, unwrapNodesForInsertion(this, nodes), refNode);
+          } else {
+            adoptNodesIfNeeded(this, nodes);
+          }
+        }
+        enqueueMutation(this, "childList", {
+          addedNodes: nodes,
+          nextSibling: refWrapper,
+          previousSibling: previousNode
+        });
+        nodesWereAdded(nodes, this);
+        return childWrapper;
+      },
+      removeChild: function(childWrapper) {
+        assertIsNodeWrapper(childWrapper);
+        if (childWrapper.parentNode !== this) {
+          var found = false;
+          var childNodes = this.childNodes;
+          for (var ieChild = this.firstChild; ieChild; ieChild = ieChild.nextSibling) {
+            if (ieChild === childWrapper) {
+              found = true;
+              break;
+            }
+          }
+          if (!found) {
+            throw new Error("NotFoundError");
+          }
+        }
+        var childNode = unwrap(childWrapper);
+        var childWrapperNextSibling = childWrapper.nextSibling;
+        var childWrapperPreviousSibling = childWrapper.previousSibling;
+        if (this.invalidateShadowRenderer()) {
+          var thisFirstChild = this.firstChild;
+          var thisLastChild = this.lastChild;
+          var parentNode = childNode.parentNode;
+          if (parentNode) removeChildOriginalHelper(parentNode, childNode);
+          if (thisFirstChild === childWrapper) this.firstChild_ = childWrapperNextSibling;
+          if (thisLastChild === childWrapper) this.lastChild_ = childWrapperPreviousSibling;
+          if (childWrapperPreviousSibling) childWrapperPreviousSibling.nextSibling_ = childWrapperNextSibling;
+          if (childWrapperNextSibling) {
+            childWrapperNextSibling.previousSibling_ = childWrapperPreviousSibling;
+          }
+          childWrapper.previousSibling_ = childWrapper.nextSibling_ = childWrapper.parentNode_ = undefined;
+        } else {
+          clearChildNodes(this);
+          removeChildOriginalHelper(unsafeUnwrap(this), childNode);
+        }
+        if (!surpressMutations) {
+          enqueueMutation(this, "childList", {
+            removedNodes: createOneElementNodeList(childWrapper),
+            nextSibling: childWrapperNextSibling,
+            previousSibling: childWrapperPreviousSibling
+          });
+        }
+        registerTransientObservers(this, childWrapper);
+        return childWrapper;
+      },
+      replaceChild: function(newChildWrapper, oldChildWrapper) {
+        assertIsNodeWrapper(newChildWrapper);
+        var oldChildNode;
+        if (isWrapper(oldChildWrapper)) {
+          oldChildNode = unwrap(oldChildWrapper);
+        } else {
+          oldChildNode = oldChildWrapper;
+          oldChildWrapper = wrap(oldChildNode);
+        }
+        if (oldChildWrapper.parentNode !== this) {
+          throw new Error("NotFoundError");
+        }
+        var nextNode = oldChildWrapper.nextSibling;
+        var previousNode = oldChildWrapper.previousSibling;
+        var nodes;
+        var useNative = !this.invalidateShadowRenderer() && !invalidateParent(newChildWrapper);
+        if (useNative) {
+          nodes = collectNodesNative(newChildWrapper);
+        } else {
+          if (nextNode === newChildWrapper) nextNode = newChildWrapper.nextSibling;
+          nodes = collectNodes(newChildWrapper, this, previousNode, nextNode);
+        }
+        if (!useNative) {
+          if (this.firstChild === oldChildWrapper) this.firstChild_ = nodes[0];
+          if (this.lastChild === oldChildWrapper) this.lastChild_ = nodes[nodes.length - 1];
+          oldChildWrapper.previousSibling_ = oldChildWrapper.nextSibling_ = oldChildWrapper.parentNode_ = undefined;
+          if (oldChildNode.parentNode) {
+            originalReplaceChild.call(oldChildNode.parentNode, unwrapNodesForInsertion(this, nodes), oldChildNode);
+          }
+        } else {
+          ensureSameOwnerDocument(this, newChildWrapper);
+          clearChildNodes(this);
+          originalReplaceChild.call(unsafeUnwrap(this), unwrap(newChildWrapper), oldChildNode);
+        }
+        enqueueMutation(this, "childList", {
+          addedNodes: nodes,
+          removedNodes: createOneElementNodeList(oldChildWrapper),
+          nextSibling: nextNode,
+          previousSibling: previousNode
+        });
+        nodeWasRemoved(oldChildWrapper);
+        nodesWereAdded(nodes, this);
+        return oldChildWrapper;
+      },
+      nodeIsInserted_: function() {
+        for (var child = this.firstChild; child; child = child.nextSibling) {
+          child.nodeIsInserted_();
+        }
+      },
+      hasChildNodes: function() {
+        return this.firstChild !== null;
+      },
+      get parentNode() {
+        return this.parentNode_ !== undefined ? this.parentNode_ : wrap(unsafeUnwrap(this).parentNode);
+      },
+      get firstChild() {
+        return this.firstChild_ !== undefined ? this.firstChild_ : wrap(unsafeUnwrap(this).firstChild);
+      },
+      get lastChild() {
+        return this.lastChild_ !== undefined ? this.lastChild_ : wrap(unsafeUnwrap(this).lastChild);
+      },
+      get nextSibling() {
+        return this.nextSibling_ !== undefined ? this.nextSibling_ : wrap(unsafeUnwrap(this).nextSibling);
+      },
+      get previousSibling() {
+        return this.previousSibling_ !== undefined ? this.previousSibling_ : wrap(unsafeUnwrap(this).previousSibling);
+      },
+      get parentElement() {
+        var p = this.parentNode;
+        while (p && p.nodeType !== Node.ELEMENT_NODE) {
+          p = p.parentNode;
+        }
+        return p;
+      },
+      get textContent() {
+        var s = "";
+        for (var child = this.firstChild; child; child = child.nextSibling) {
+          if (child.nodeType != Node.COMMENT_NODE) {
+            s += child.textContent;
+          }
+        }
+        return s;
+      },
+      set textContent(textContent) {
+        if (textContent == null) textContent = "";
+        var removedNodes = snapshotNodeList(this.childNodes);
+        if (this.invalidateShadowRenderer()) {
+          removeAllChildNodes(this);
+          if (textContent !== "") {
+            var textNode = unsafeUnwrap(this).ownerDocument.createTextNode(textContent);
+            this.appendChild(textNode);
+          }
+        } else {
+          clearChildNodes(this);
+          unsafeUnwrap(this).textContent = textContent;
+        }
+        var addedNodes = snapshotNodeList(this.childNodes);
+        enqueueMutation(this, "childList", {
+          addedNodes: addedNodes,
+          removedNodes: removedNodes
+        });
+        nodesWereRemoved(removedNodes);
+        nodesWereAdded(addedNodes, this);
+      },
+      get childNodes() {
+        var wrapperList = new NodeList();
+        var i = 0;
+        for (var child = this.firstChild; child; child = child.nextSibling) {
+          wrapperList[i++] = child;
+        }
+        wrapperList.length = i;
+        return wrapperList;
+      },
+      cloneNode: function(deep) {
+        return cloneNode(this, deep);
+      },
+      contains: function(child) {
+        return contains(this, wrapIfNeeded(child));
+      },
+      compareDocumentPosition: function(otherNode) {
+        return originalCompareDocumentPosition.call(unsafeUnwrap(this), unwrapIfNeeded(otherNode));
+      },
+      normalize: function() {
+        var nodes = snapshotNodeList(this.childNodes);
+        var remNodes = [];
+        var s = "";
+        var modNode;
+        for (var i = 0, n; i < nodes.length; i++) {
+          n = nodes[i];
+          if (n.nodeType === Node.TEXT_NODE) {
+            if (!modNode && !n.data.length) this.removeChild(n); else if (!modNode) modNode = n; else {
+              s += n.data;
+              remNodes.push(n);
+            }
+          } else {
+            if (modNode && remNodes.length) {
+              modNode.data += s;
+              cleanupNodes(remNodes);
+            }
+            remNodes = [];
+            s = "";
+            modNode = null;
+            if (n.childNodes.length) n.normalize();
+          }
+        }
+        if (modNode && remNodes.length) {
+          modNode.data += s;
+          cleanupNodes(remNodes);
+        }
+      }
+    });
+    defineWrapGetter(Node, "ownerDocument");
+    registerWrapper(OriginalNode, Node, document.createDocumentFragment());
+    delete Node.prototype.querySelector;
+    delete Node.prototype.querySelectorAll;
+    Node.prototype = mixin(Object.create(EventTarget.prototype), Node.prototype);
+    scope.cloneNode = cloneNode;
+    scope.nodeWasAdded = nodeWasAdded;
+    scope.nodeWasRemoved = nodeWasRemoved;
+    scope.nodesWereAdded = nodesWereAdded;
+    scope.nodesWereRemoved = nodesWereRemoved;
+    scope.originalInsertBefore = originalInsertBefore;
+    scope.originalRemoveChild = originalRemoveChild;
+    scope.snapshotNodeList = snapshotNodeList;
+    scope.wrappers.Node = Node;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var HTMLCollection = scope.wrappers.HTMLCollection;
+    var NodeList = scope.wrappers.NodeList;
+    var getTreeScope = scope.getTreeScope;
+    var unsafeUnwrap = scope.unsafeUnwrap;
+    var wrap = scope.wrap;
+    var originalDocumentQuerySelector = document.querySelector;
+    var originalElementQuerySelector = document.documentElement.querySelector;
+    var originalDocumentQuerySelectorAll = document.querySelectorAll;
+    var originalElementQuerySelectorAll = document.documentElement.querySelectorAll;
+    var originalDocumentGetElementsByTagName = document.getElementsByTagName;
+    var originalElementGetElementsByTagName = document.documentElement.getElementsByTagName;
+    var originalDocumentGetElementsByTagNameNS = document.getElementsByTagNameNS;
+    var originalElementGetElementsByTagNameNS = document.documentElement.getElementsByTagNameNS;
+    var OriginalElement = window.Element;
+    var OriginalDocument = window.HTMLDocument || window.Document;
+    function filterNodeList(list, index, result, deep) {
+      var wrappedItem = null;
+      var root = null;
+      for (var i = 0, length = list.length; i < length; i++) {
+        wrappedItem = wrap(list[i]);
+        if (!deep && (root = getTreeScope(wrappedItem).root)) {
+          if (root instanceof scope.wrappers.ShadowRoot) {
+            continue;
+          }
+        }
+        result[index++] = wrappedItem;
+      }
+      return index;
+    }
+    function shimSelector(selector) {
+      return String(selector).replace(/\/deep\/|::shadow/g, " ");
+    }
+    function shimMatchesSelector(selector) {
+      return String(selector).replace(/:host\(([^\s]+)\)/g, "$1").replace(/([^\s]):host/g, "$1").replace(":host", "*").replace(/\^|\/shadow\/|\/shadow-deep\/|::shadow|\/deep\/|::content/g, " ");
+    }
+    function findOne(node, selector) {
+      var m, el = node.firstElementChild;
+      while (el) {
+        if (el.matches(selector)) return el;
+        m = findOne(el, selector);
+        if (m) return m;
+        el = el.nextElementSibling;
+      }
+      return null;
+    }
+    function matchesSelector(el, selector) {
+      return el.matches(selector);
+    }
+    var XHTML_NS = "http://www.w3.org/1999/xhtml";
+    function matchesTagName(el, localName, localNameLowerCase) {
+      var ln = el.localName;
+      return ln === localName || ln === localNameLowerCase && el.namespaceURI === XHTML_NS;
+    }
+    function matchesEveryThing() {
+      return true;
+    }
+    function matchesLocalNameOnly(el, ns, localName) {
+      return el.localName === localName;
+    }
+    function matchesNameSpace(el, ns) {
+      return el.namespaceURI === ns;
+    }
+    function matchesLocalNameNS(el, ns, localName) {
+      return el.namespaceURI === ns && el.localName === localName;
+    }
+    function findElements(node, index, result, p, arg0, arg1) {
+      var el = node.firstElementChild;
+      while (el) {
+        if (p(el, arg0, arg1)) result[index++] = el;
+        index = findElements(el, index, result, p, arg0, arg1);
+        el = el.nextElementSibling;
+      }
+      return index;
+    }
+    function querySelectorAllFiltered(p, index, result, selector, deep) {
+      var target = unsafeUnwrap(this);
+      var list;
+      var root = getTreeScope(this).root;
+      if (root instanceof scope.wrappers.ShadowRoot) {
+        return findElements(this, index, result, p, selector, null);
+      } else if (target instanceof OriginalElement) {
+        list = originalElementQuerySelectorAll.call(target, selector);
+      } else if (target instanceof OriginalDocument) {
+        list = originalDocumentQuerySelectorAll.call(target, selector);
+      } else {
+        return findElements(this, index, result, p, selector, null);
+      }
+      return filterNodeList(list, index, result, deep);
+    }
+    var SelectorsInterface = {
+      querySelector: function(selector) {
+        var shimmed = shimSelector(selector);
+        var deep = shimmed !== selector;
+        selector = shimmed;
+        var target = unsafeUnwrap(this);
+        var wrappedItem;
+        var root = getTreeScope(this).root;
+        if (root instanceof scope.wrappers.ShadowRoot) {
+          return findOne(this, selector);
+        } else if (target instanceof OriginalElement) {
+          wrappedItem = wrap(originalElementQuerySelector.call(target, selector));
+        } else if (target instanceof OriginalDocument) {
+          wrappedItem = wrap(originalDocumentQuerySelector.call(target, selector));
+        } else {
+          return findOne(this, selector);
+        }
+        if (!wrappedItem) {
+          return wrappedItem;
+        } else if (!deep && (root = getTreeScope(wrappedItem).root)) {
+          if (root instanceof scope.wrappers.ShadowRoot) {
+            return findOne(this, selector);
+          }
+        }
+        return wrappedItem;
+      },
+      querySelectorAll: function(selector) {
+        var shimmed = shimSelector(selector);
+        var deep = shimmed !== selector;
+        selector = shimmed;
+        var result = new NodeList();
+        result.length = querySelectorAllFiltered.call(this, matchesSelector, 0, result, selector, deep);
+        return result;
+      }
+    };
+    var MatchesInterface = {
+      matches: function(selector) {
+        selector = shimMatchesSelector(selector);
+        return scope.originalMatches.call(unsafeUnwrap(this), selector);
+      }
+    };
+    function getElementsByTagNameFiltered(p, index, result, localName, lowercase) {
+      var target = unsafeUnwrap(this);
+      var list;
+      var root = getTreeScope(this).root;
+      if (root instanceof scope.wrappers.ShadowRoot) {
+        return findElements(this, index, result, p, localName, lowercase);
+      } else if (target instanceof OriginalElement) {
+        list = originalElementGetElementsByTagName.call(target, localName, lowercase);
+      } else if (target instanceof OriginalDocument) {
+        list = originalDocumentGetElementsByTagName.call(target, localName, lowercase);
+      } else {
+        return findElements(this, index, result, p, localName, lowercase);
+      }
+      return filterNodeList(list, index, result, false);
+    }
+    function getElementsByTagNameNSFiltered(p, index, result, ns, localName) {
+      var target = unsafeUnwrap(this);
+      var list;
+      var root = getTreeScope(this).root;
+      if (root instanceof scope.wrappers.ShadowRoot) {
+        return findElements(this, index, result, p, ns, localName);
+      } else if (target instanceof OriginalElement) {
+        list = originalElementGetElementsByTagNameNS.call(target, ns, localName);
+      } else if (target instanceof OriginalDocument) {
+        list = originalDocumentGetElementsByTagNameNS.call(target, ns, localName);
+      } else {
+        return findElements(this, index, result, p, ns, localName);
+      }
+      return filterNodeList(list, index, result, false);
+    }
+    var GetElementsByInterface = {
+      getElementsByTagName: function(localName) {
+        var result = new HTMLCollection();
+        var match = localName === "*" ? matchesEveryThing : matchesTagName;
+        result.length = getElementsByTagNameFiltered.call(this, match, 0, result, localName, localName.toLowerCase());
+        return result;
+      },
+      getElementsByClassName: function(className) {
+        return this.querySelectorAll("." + className);
+      },
+      getElementsByTagNameNS: function(ns, localName) {
+        var result = new HTMLCollection();
+        var match = null;
+        if (ns === "*") {
+          match = localName === "*" ? matchesEveryThing : matchesLocalNameOnly;
+        } else {
+          match = localName === "*" ? matchesNameSpace : matchesLocalNameNS;
+        }
+        result.length = getElementsByTagNameNSFiltered.call(this, match, 0, result, ns || null, localName);
+        return result;
+      }
+    };
+    scope.GetElementsByInterface = GetElementsByInterface;
+    scope.SelectorsInterface = SelectorsInterface;
+    scope.MatchesInterface = MatchesInterface;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var NodeList = scope.wrappers.NodeList;
+    function forwardElement(node) {
+      while (node && node.nodeType !== Node.ELEMENT_NODE) {
+        node = node.nextSibling;
+      }
+      return node;
+    }
+    function backwardsElement(node) {
+      while (node && node.nodeType !== Node.ELEMENT_NODE) {
+        node = node.previousSibling;
+      }
+      return node;
+    }
+    var ParentNodeInterface = {
+      get firstElementChild() {
+        return forwardElement(this.firstChild);
+      },
+      get lastElementChild() {
+        return backwardsElement(this.lastChild);
+      },
+      get childElementCount() {
+        var count = 0;
+        for (var child = this.firstElementChild; child; child = child.nextElementSibling) {
+          count++;
+        }
+        return count;
+      },
+      get children() {
+        var wrapperList = new NodeList();
+        var i = 0;
+        for (var child = this.firstElementChild; child; child = child.nextElementSibling) {
+          wrapperList[i++] = child;
+        }
+        wrapperList.length = i;
+        return wrapperList;
+      },
+      remove: function() {
+        var p = this.parentNode;
+        if (p) p.removeChild(this);
+      }
+    };
+    var ChildNodeInterface = {
+      get nextElementSibling() {
+        return forwardElement(this.nextSibling);
+      },
+      get previousElementSibling() {
+        return backwardsElement(this.previousSibling);
+      }
+    };
+    scope.ChildNodeInterface = ChildNodeInterface;
+    scope.ParentNodeInterface = ParentNodeInterface;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var ChildNodeInterface = scope.ChildNodeInterface;
+    var Node = scope.wrappers.Node;
+    var enqueueMutation = scope.enqueueMutation;
+    var mixin = scope.mixin;
+    var registerWrapper = scope.registerWrapper;
+    var unsafeUnwrap = scope.unsafeUnwrap;
+    var OriginalCharacterData = window.CharacterData;
+    function CharacterData(node) {
+      Node.call(this, node);
+    }
+    CharacterData.prototype = Object.create(Node.prototype);
+    mixin(CharacterData.prototype, {
+      get textContent() {
+        return this.data;
+      },
+      set textContent(value) {
+        this.data = value;
+      },
+      get data() {
+        return unsafeUnwrap(this).data;
+      },
+      set data(value) {
+        var oldValue = unsafeUnwrap(this).data;
+        enqueueMutation(this, "characterData", {
+          oldValue: oldValue
+        });
+        unsafeUnwrap(this).data = value;
+      }
+    });
+    mixin(CharacterData.prototype, ChildNodeInterface);
+    registerWrapper(OriginalCharacterData, CharacterData, document.createTextNode(""));
+    scope.wrappers.CharacterData = CharacterData;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var CharacterData = scope.wrappers.CharacterData;
+    var enqueueMutation = scope.enqueueMutation;
+    var mixin = scope.mixin;
+    var registerWrapper = scope.registerWrapper;
+    function toUInt32(x) {
+      return x >>> 0;
+    }
+    var OriginalText = window.Text;
+    function Text(node) {
+      CharacterData.call(this, node);
+    }
+    Text.prototype = Object.create(CharacterData.prototype);
+    mixin(Text.prototype, {
+      splitText: function(offset) {
+        offset = toUInt32(offset);
+        var s = this.data;
+        if (offset > s.length) throw new Error("IndexSizeError");
+        var head = s.slice(0, offset);
+        var tail = s.slice(offset);
+        this.data = head;
+        var newTextNode = this.ownerDocument.createTextNode(tail);
+        if (this.parentNode) this.parentNode.insertBefore(newTextNode, this.nextSibling);
+        return newTextNode;
+      }
+    });
+    registerWrapper(OriginalText, Text, document.createTextNode(""));
+    scope.wrappers.Text = Text;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    if (!window.DOMTokenList) {
+      console.warn("Missing DOMTokenList prototype, please include a " + "compatible classList polyfill such as http://goo.gl/uTcepH.");
+      return;
+    }
+    var unsafeUnwrap = scope.unsafeUnwrap;
+    var enqueueMutation = scope.enqueueMutation;
+    function getClass(el) {
+      return unsafeUnwrap(el).getAttribute("class");
+    }
+    function enqueueClassAttributeChange(el, oldValue) {
+      enqueueMutation(el, "attributes", {
+        name: "class",
+        namespace: null,
+        oldValue: oldValue
+      });
+    }
+    function invalidateClass(el) {
+      scope.invalidateRendererBasedOnAttribute(el, "class");
+    }
+    function changeClass(tokenList, method, args) {
+      var ownerElement = tokenList.ownerElement_;
+      if (ownerElement == null) {
+        return method.apply(tokenList, args);
+      }
+      var oldValue = getClass(ownerElement);
+      var retv = method.apply(tokenList, args);
+      if (getClass(ownerElement) !== oldValue) {
+        enqueueClassAttributeChange(ownerElement, oldValue);
+        invalidateClass(ownerElement);
+      }
+      return retv;
+    }
+    var oldAdd = DOMTokenList.prototype.add;
+    DOMTokenList.prototype.add = function() {
+      changeClass(this, oldAdd, arguments);
+    };
+    var oldRemove = DOMTokenList.prototype.remove;
+    DOMTokenList.prototype.remove = function() {
+      changeClass(this, oldRemove, arguments);
+    };
+    var oldToggle = DOMTokenList.prototype.toggle;
+    DOMTokenList.prototype.toggle = function() {
+      return changeClass(this, oldToggle, arguments);
+    };
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var ChildNodeInterface = scope.ChildNodeInterface;
+    var GetElementsByInterface = scope.GetElementsByInterface;
+    var Node = scope.wrappers.Node;
+    var ParentNodeInterface = scope.ParentNodeInterface;
+    var SelectorsInterface = scope.SelectorsInterface;
+    var MatchesInterface = scope.MatchesInterface;
+    var addWrapNodeListMethod = scope.addWrapNodeListMethod;
+    var enqueueMutation = scope.enqueueMutation;
+    var mixin = scope.mixin;
+    var oneOf = scope.oneOf;
+    var registerWrapper = scope.registerWrapper;
+    var unsafeUnwrap = scope.unsafeUnwrap;
+    var wrappers = scope.wrappers;
+    var OriginalElement = window.Element;
+    var matchesNames = [ "matches", "mozMatchesSelector", "msMatchesSelector", "webkitMatchesSelector" ].filter(function(name) {
+      return OriginalElement.prototype[name];
+    });
+    var matchesName = matchesNames[0];
+    var originalMatches = OriginalElement.prototype[matchesName];
+    function invalidateRendererBasedOnAttribute(element, name) {
+      var p = element.parentNode;
+      if (!p || !p.shadowRoot) return;
+      var renderer = scope.getRendererForHost(p);
+      if (renderer.dependsOnAttribute(name)) renderer.invalidate();
+    }
+    function enqueAttributeChange(element, name, oldValue) {
+      enqueueMutation(element, "attributes", {
+        name: name,
+        namespace: null,
+        oldValue: oldValue
+      });
+    }
+    var classListTable = new WeakMap();
+    function Element(node) {
+      Node.call(this, node);
+    }
+    Element.prototype = Object.create(Node.prototype);
+    mixin(Element.prototype, {
+      createShadowRoot: function() {
+        var newShadowRoot = new wrappers.ShadowRoot(this);
+        unsafeUnwrap(this).polymerShadowRoot_ = newShadowRoot;
+        var renderer = scope.getRendererForHost(this);
+        renderer.invalidate();
+        return newShadowRoot;
+      },
+      get shadowRoot() {
+        return unsafeUnwrap(this).polymerShadowRoot_ || null;
+      },
+      setAttribute: function(name, value) {
+        var oldValue = unsafeUnwrap(this).getAttribute(name);
+        unsafeUnwrap(this).setAttribute(name, value);
+        enqueAttributeChange(this, name, oldValue);
+        invalidateRendererBasedOnAttribute(this, name);
+      },
+      removeAttribute: function(name) {
+        var oldValue = unsafeUnwrap(this).getAttribute(name);
+        unsafeUnwrap(this).removeAttribute(name);
+        enqueAttributeChange(this, name, oldValue);
+        invalidateRendererBasedOnAttribute(this, name);
+      },
+      get classList() {
+        var list = classListTable.get(this);
+        if (!list) {
+          list = unsafeUnwrap(this).classList;
+          if (!list) return;
+          list.ownerElement_ = this;
+          classListTable.set(this, list);
+        }
+        return list;
+      },
+      get className() {
+        return unsafeUnwrap(this).className;
+      },
+      set className(v) {
+        this.setAttribute("class", v);
+      },
+      get id() {
+        return unsafeUnwrap(this).id;
+      },
+      set id(v) {
+        this.setAttribute("id", v);
+      }
+    });
+    matchesNames.forEach(function(name) {
+      if (name !== "matches") {
+        Element.prototype[name] = function(selector) {
+          return this.matches(selector);
+        };
+      }
+    });
+    if (OriginalElement.prototype.webkitCreateShadowRoot) {
+      Element.prototype.webkitCreateShadowRoot = Element.prototype.createShadowRoot;
+    }
+    mixin(Element.prototype, ChildNodeInterface);
+    mixin(Element.prototype, GetElementsByInterface);
+    mixin(Element.prototype, ParentNodeInterface);
+    mixin(Element.prototype, SelectorsInterface);
+    mixin(Element.prototype, MatchesInterface);
+    registerWrapper(OriginalElement, Element, document.createElementNS(null, "x"));
+    scope.invalidateRendererBasedOnAttribute = invalidateRendererBasedOnAttribute;
+    scope.matchesNames = matchesNames;
+    scope.originalMatches = originalMatches;
+    scope.wrappers.Element = Element;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var Element = scope.wrappers.Element;
+    var defineGetter = scope.defineGetter;
+    var enqueueMutation = scope.enqueueMutation;
+    var mixin = scope.mixin;
+    var nodesWereAdded = scope.nodesWereAdded;
+    var nodesWereRemoved = scope.nodesWereRemoved;
+    var registerWrapper = scope.registerWrapper;
+    var snapshotNodeList = scope.snapshotNodeList;
+    var unsafeUnwrap = scope.unsafeUnwrap;
+    var unwrap = scope.unwrap;
+    var wrap = scope.wrap;
+    var wrappers = scope.wrappers;
+    var escapeAttrRegExp = /[&\u00A0"]/g;
+    var escapeDataRegExp = /[&\u00A0<>]/g;
+    function escapeReplace(c) {
+      switch (c) {
+       case "&":
+        return "&amp;";
+
+       case "<":
+        return "&lt;";
+
+       case ">":
+        return "&gt;";
+
+       case '"':
+        return "&quot;";
+
+       case " ":
+        return "&nbsp;";
+      }
+    }
+    function escapeAttr(s) {
+      return s.replace(escapeAttrRegExp, escapeReplace);
+    }
+    function escapeData(s) {
+      return s.replace(escapeDataRegExp, escapeReplace);
+    }
+    function makeSet(arr) {
+      var set = {};
+      for (var i = 0; i < arr.length; i++) {
+        set[arr[i]] = true;
+      }
+      return set;
+    }
+    var voidElements = makeSet([ "area", "base", "br", "col", "command", "embed", "hr", "img", "input", "keygen", "link", "meta", "param", "source", "track", "wbr" ]);
+    var plaintextParents = makeSet([ "style", "script", "xmp", "iframe", "noembed", "noframes", "plaintext", "noscript" ]);
+    function getOuterHTML(node, parentNode) {
+      switch (node.nodeType) {
+       case Node.ELEMENT_NODE:
+        var tagName = node.tagName.toLowerCase();
+        var s = "<" + tagName;
+        var attrs = node.attributes;
+        for (var i = 0, attr; attr = attrs[i]; i++) {
+          s += " " + attr.name + '="' + escapeAttr(attr.value) + '"';
+        }
+        s += ">";
+        if (voidElements[tagName]) return s;
+        return s + getInnerHTML(node) + "</" + tagName + ">";
+
+       case Node.TEXT_NODE:
+        var data = node.data;
+        if (parentNode && plaintextParents[parentNode.localName]) return data;
+        return escapeData(data);
+
+       case Node.COMMENT_NODE:
+        return "<!--" + node.data + "-->";
+
+       default:
+        console.error(node);
+        throw new Error("not implemented");
+      }
+    }
+    function getInnerHTML(node) {
+      if (node instanceof wrappers.HTMLTemplateElement) node = node.content;
+      var s = "";
+      for (var child = node.firstChild; child; child = child.nextSibling) {
+        s += getOuterHTML(child, node);
+      }
+      return s;
+    }
+    function setInnerHTML(node, value, opt_tagName) {
+      var tagName = opt_tagName || "div";
+      node.textContent = "";
+      var tempElement = unwrap(node.ownerDocument.createElement(tagName));
+      tempElement.innerHTML = value;
+      var firstChild;
+      while (firstChild = tempElement.firstChild) {
+        node.appendChild(wrap(firstChild));
+      }
+    }
+    var oldIe = /MSIE/.test(navigator.userAgent);
+    var OriginalHTMLElement = window.HTMLElement;
+    var OriginalHTMLTemplateElement = window.HTMLTemplateElement;
+    function HTMLElement(node) {
+      Element.call(this, node);
+    }
+    HTMLElement.prototype = Object.create(Element.prototype);
+    mixin(HTMLElement.prototype, {
+      get innerHTML() {
+        return getInnerHTML(this);
+      },
+      set innerHTML(value) {
+        if (oldIe && plaintextParents[this.localName]) {
+          this.textContent = value;
+          return;
+        }
+        var removedNodes = snapshotNodeList(this.childNodes);
+        if (this.invalidateShadowRenderer()) {
+          if (this instanceof wrappers.HTMLTemplateElement) setInnerHTML(this.content, value); else setInnerHTML(this, value, this.tagName);
+        } else if (!OriginalHTMLTemplateElement && this instanceof wrappers.HTMLTemplateElement) {
+          setInnerHTML(this.content, value);
+        } else {
+          unsafeUnwrap(this).innerHTML = value;
+        }
+        var addedNodes = snapshotNodeList(this.childNodes);
+        enqueueMutation(this, "childList", {
+          addedNodes: addedNodes,
+          removedNodes: removedNodes
+        });
+        nodesWereRemoved(removedNodes);
+        nodesWereAdded(addedNodes, this);
+      },
+      get outerHTML() {
+        return getOuterHTML(this, this.parentNode);
+      },
+      set outerHTML(value) {
+        var p = this.parentNode;
+        if (p) {
+          p.invalidateShadowRenderer();
+          var df = frag(p, value);
+          p.replaceChild(df, this);
+        }
+      },
+      insertAdjacentHTML: function(position, text) {
+        var contextElement, refNode;
+        switch (String(position).toLowerCase()) {
+         case "beforebegin":
+          contextElement = this.parentNode;
+          refNode = this;
+          break;
+
+         case "afterend":
+          contextElement = this.parentNode;
+          refNode = this.nextSibling;
+          break;
+
+         case "afterbegin":
+          contextElement = this;
+          refNode = this.firstChild;
+          break;
+
+         case "beforeend":
+          contextElement = this;
+          refNode = null;
+          break;
+
+         default:
+          return;
+        }
+        var df = frag(contextElement, text);
+        contextElement.insertBefore(df, refNode);
+      },
+      get hidden() {
+        return this.hasAttribute("hidden");
+      },
+      set hidden(v) {
+        if (v) {
+          this.setAttribute("hidden", "");
+        } else {
+          this.removeAttribute("hidden");
+        }
+      }
+    });
+    function frag(contextElement, html) {
+      var p = unwrap(contextElement.cloneNode(false));
+      p.innerHTML = html;
+      var df = unwrap(document.createDocumentFragment());
+      var c;
+      while (c = p.firstChild) {
+        df.appendChild(c);
+      }
+      return wrap(df);
+    }
+    function getter(name) {
+      return function() {
+        scope.renderAllPending();
+        return unsafeUnwrap(this)[name];
+      };
+    }
+    function getterRequiresRendering(name) {
+      defineGetter(HTMLElement, name, getter(name));
+    }
+    [ "clientHeight", "clientLeft", "clientTop", "clientWidth", "offsetHeight", "offsetLeft", "offsetTop", "offsetWidth", "scrollHeight", "scrollWidth" ].forEach(getterRequiresRendering);
+    function getterAndSetterRequiresRendering(name) {
+      Object.defineProperty(HTMLElement.prototype, name, {
+        get: getter(name),
+        set: function(v) {
+          scope.renderAllPending();
+          unsafeUnwrap(this)[name] = v;
+        },
+        configurable: true,
+        enumerable: true
+      });
+    }
+    [ "scrollLeft", "scrollTop" ].forEach(getterAndSetterRequiresRendering);
+    function methodRequiresRendering(name) {
+      Object.defineProperty(HTMLElement.prototype, name, {
+        value: function() {
+          scope.renderAllPending();
+          return unsafeUnwrap(this)[name].apply(unsafeUnwrap(this), arguments);
+        },
+        configurable: true,
+        enumerable: true
+      });
+    }
+    [ "getBoundingClientRect", "getClientRects", "scrollIntoView" ].forEach(methodRequiresRendering);
+    registerWrapper(OriginalHTMLElement, HTMLElement, document.createElement("b"));
+    scope.wrappers.HTMLElement = HTMLElement;
+    scope.getInnerHTML = getInnerHTML;
+    scope.setInnerHTML = setInnerHTML;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var HTMLElement = scope.wrappers.HTMLElement;
+    var mixin = scope.mixin;
+    var registerWrapper = scope.registerWrapper;
+    var unsafeUnwrap = scope.unsafeUnwrap;
+    var wrap = scope.wrap;
+    var OriginalHTMLCanvasElement = window.HTMLCanvasElement;
+    function HTMLCanvasElement(node) {
+      HTMLElement.call(this, node);
+    }
+    HTMLCanvasElement.prototype = Object.create(HTMLElement.prototype);
+    mixin(HTMLCanvasElement.prototype, {
+      getContext: function() {
+        var context = unsafeUnwrap(this).getContext.apply(unsafeUnwrap(this), arguments);
+        return context && wrap(context);
+      }
+    });
+    registerWrapper(OriginalHTMLCanvasElement, HTMLCanvasElement, document.createElement("canvas"));
+    scope.wrappers.HTMLCanvasElement = HTMLCanvasElement;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var HTMLElement = scope.wrappers.HTMLElement;
+    var mixin = scope.mixin;
+    var registerWrapper = scope.registerWrapper;
+    var OriginalHTMLContentElement = window.HTMLContentElement;
+    function HTMLContentElement(node) {
+      HTMLElement.call(this, node);
+    }
+    HTMLContentElement.prototype = Object.create(HTMLElement.prototype);
+    mixin(HTMLContentElement.prototype, {
+      constructor: HTMLContentElement,
+      get select() {
+        return this.getAttribute("select");
+      },
+      set select(value) {
+        this.setAttribute("select", value);
+      },
+      setAttribute: function(n, v) {
+        HTMLElement.prototype.setAttribute.call(this, n, v);
+        if (String(n).toLowerCase() === "select") this.invalidateShadowRenderer(true);
+      }
+    });
+    if (OriginalHTMLContentElement) registerWrapper(OriginalHTMLContentElement, HTMLContentElement);
+    scope.wrappers.HTMLContentElement = HTMLContentElement;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var HTMLElement = scope.wrappers.HTMLElement;
+    var mixin = scope.mixin;
+    var registerWrapper = scope.registerWrapper;
+    var wrapHTMLCollection = scope.wrapHTMLCollection;
+    var unwrap = scope.unwrap;
+    var OriginalHTMLFormElement = window.HTMLFormElement;
+    function HTMLFormElement(node) {
+      HTMLElement.call(this, node);
+    }
+    HTMLFormElement.prototype = Object.create(HTMLElement.prototype);
+    mixin(HTMLFormElement.prototype, {
+      get elements() {
+        return wrapHTMLCollection(unwrap(this).elements);
+      }
+    });
+    registerWrapper(OriginalHTMLFormElement, HTMLFormElement, document.createElement("form"));
+    scope.wrappers.HTMLFormElement = HTMLFormElement;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var HTMLElement = scope.wrappers.HTMLElement;
+    var registerWrapper = scope.registerWrapper;
+    var unwrap = scope.unwrap;
+    var rewrap = scope.rewrap;
+    var OriginalHTMLImageElement = window.HTMLImageElement;
+    function HTMLImageElement(node) {
+      HTMLElement.call(this, node);
+    }
+    HTMLImageElement.prototype = Object.create(HTMLElement.prototype);
+    registerWrapper(OriginalHTMLImageElement, HTMLImageElement, document.createElement("img"));
+    function Image(width, height) {
+      if (!(this instanceof Image)) {
+        throw new TypeError("DOM object constructor cannot be called as a function.");
+      }
+      var node = unwrap(document.createElement("img"));
+      HTMLElement.call(this, node);
+      rewrap(node, this);
+      if (width !== undefined) node.width = width;
+      if (height !== undefined) node.height = height;
+    }
+    Image.prototype = HTMLImageElement.prototype;
+    scope.wrappers.HTMLImageElement = HTMLImageElement;
+    scope.wrappers.Image = Image;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var HTMLElement = scope.wrappers.HTMLElement;
+    var mixin = scope.mixin;
+    var NodeList = scope.wrappers.NodeList;
+    var registerWrapper = scope.registerWrapper;
+    var OriginalHTMLShadowElement = window.HTMLShadowElement;
+    function HTMLShadowElement(node) {
+      HTMLElement.call(this, node);
+    }
+    HTMLShadowElement.prototype = Object.create(HTMLElement.prototype);
+    HTMLShadowElement.prototype.constructor = HTMLShadowElement;
+    if (OriginalHTMLShadowElement) registerWrapper(OriginalHTMLShadowElement, HTMLShadowElement);
+    scope.wrappers.HTMLShadowElement = HTMLShadowElement;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var HTMLElement = scope.wrappers.HTMLElement;
+    var mixin = scope.mixin;
+    var registerWrapper = scope.registerWrapper;
+    var unsafeUnwrap = scope.unsafeUnwrap;
+    var unwrap = scope.unwrap;
+    var wrap = scope.wrap;
+    var contentTable = new WeakMap();
+    var templateContentsOwnerTable = new WeakMap();
+    function getTemplateContentsOwner(doc) {
+      if (!doc.defaultView) return doc;
+      var d = templateContentsOwnerTable.get(doc);
+      if (!d) {
+        d = doc.implementation.createHTMLDocument("");
+        while (d.lastChild) {
+          d.removeChild(d.lastChild);
+        }
+        templateContentsOwnerTable.set(doc, d);
+      }
+      return d;
+    }
+    function extractContent(templateElement) {
+      var doc = getTemplateContentsOwner(templateElement.ownerDocument);
+      var df = unwrap(doc.createDocumentFragment());
+      var child;
+      while (child = templateElement.firstChild) {
+        df.appendChild(child);
+      }
+      return df;
+    }
+    var OriginalHTMLTemplateElement = window.HTMLTemplateElement;
+    function HTMLTemplateElement(node) {
+      HTMLElement.call(this, node);
+      if (!OriginalHTMLTemplateElement) {
+        var content = extractContent(node);
+        contentTable.set(this, wrap(content));
+      }
+    }
+    HTMLTemplateElement.prototype = Object.create(HTMLElement.prototype);
+    mixin(HTMLTemplateElement.prototype, {
+      constructor: HTMLTemplateElement,
+      get content() {
+        if (OriginalHTMLTemplateElement) return wrap(unsafeUnwrap(this).content);
+        return contentTable.get(this);
+      }
+    });
+    if (OriginalHTMLTemplateElement) registerWrapper(OriginalHTMLTemplateElement, HTMLTemplateElement);
+    scope.wrappers.HTMLTemplateElement = HTMLTemplateElement;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var HTMLElement = scope.wrappers.HTMLElement;
+    var registerWrapper = scope.registerWrapper;
+    var OriginalHTMLMediaElement = window.HTMLMediaElement;
+    if (!OriginalHTMLMediaElement) return;
+    function HTMLMediaElement(node) {
+      HTMLElement.call(this, node);
+    }
+    HTMLMediaElement.prototype = Object.create(HTMLElement.prototype);
+    registerWrapper(OriginalHTMLMediaElement, HTMLMediaElement, document.createElement("audio"));
+    scope.wrappers.HTMLMediaElement = HTMLMediaElement;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var HTMLMediaElement = scope.wrappers.HTMLMediaElement;
+    var registerWrapper = scope.registerWrapper;
+    var unwrap = scope.unwrap;
+    var rewrap = scope.rewrap;
+    var OriginalHTMLAudioElement = window.HTMLAudioElement;
+    if (!OriginalHTMLAudioElement) return;
+    function HTMLAudioElement(node) {
+      HTMLMediaElement.call(this, node);
+    }
+    HTMLAudioElement.prototype = Object.create(HTMLMediaElement.prototype);
+    registerWrapper(OriginalHTMLAudioElement, HTMLAudioElement, document.createElement("audio"));
+    function Audio(src) {
+      if (!(this instanceof Audio)) {
+        throw new TypeError("DOM object constructor cannot be called as a function.");
+      }
+      var node = unwrap(document.createElement("audio"));
+      HTMLMediaElement.call(this, node);
+      rewrap(node, this);
+      node.setAttribute("preload", "auto");
+      if (src !== undefined) node.setAttribute("src", src);
+    }
+    Audio.prototype = HTMLAudioElement.prototype;
+    scope.wrappers.HTMLAudioElement = HTMLAudioElement;
+    scope.wrappers.Audio = Audio;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var HTMLElement = scope.wrappers.HTMLElement;
+    var mixin = scope.mixin;
+    var registerWrapper = scope.registerWrapper;
+    var rewrap = scope.rewrap;
+    var unwrap = scope.unwrap;
+    var wrap = scope.wrap;
+    var OriginalHTMLOptionElement = window.HTMLOptionElement;
+    function trimText(s) {
+      return s.replace(/\s+/g, " ").trim();
+    }
+    function HTMLOptionElement(node) {
+      HTMLElement.call(this, node);
+    }
+    HTMLOptionElement.prototype = Object.create(HTMLElement.prototype);
+    mixin(HTMLOptionElement.prototype, {
+      get text() {
+        return trimText(this.textContent);
+      },
+      set text(value) {
+        this.textContent = trimText(String(value));
+      },
+      get form() {
+        return wrap(unwrap(this).form);
+      }
+    });
+    registerWrapper(OriginalHTMLOptionElement, HTMLOptionElement, document.createElement("option"));
+    function Option(text, value, defaultSelected, selected) {
+      if (!(this instanceof Option)) {
+        throw new TypeError("DOM object constructor cannot be called as a function.");
+      }
+      var node = unwrap(document.createElement("option"));
+      HTMLElement.call(this, node);
+      rewrap(node, this);
+      if (text !== undefined) node.text = text;
+      if (value !== undefined) node.setAttribute("value", value);
+      if (defaultSelected === true) node.setAttribute("selected", "");
+      node.selected = selected === true;
+    }
+    Option.prototype = HTMLOptionElement.prototype;
+    scope.wrappers.HTMLOptionElement = HTMLOptionElement;
+    scope.wrappers.Option = Option;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var HTMLElement = scope.wrappers.HTMLElement;
+    var mixin = scope.mixin;
+    var registerWrapper = scope.registerWrapper;
+    var unwrap = scope.unwrap;
+    var wrap = scope.wrap;
+    var OriginalHTMLSelectElement = window.HTMLSelectElement;
+    function HTMLSelectElement(node) {
+      HTMLElement.call(this, node);
+    }
+    HTMLSelectElement.prototype = Object.create(HTMLElement.prototype);
+    mixin(HTMLSelectElement.prototype, {
+      add: function(element, before) {
+        if (typeof before === "object") before = unwrap(before);
+        unwrap(this).add(unwrap(element), before);
+      },
+      remove: function(indexOrNode) {
+        if (indexOrNode === undefined) {
+          HTMLElement.prototype.remove.call(this);
+          return;
+        }
+        if (typeof indexOrNode === "object") indexOrNode = unwrap(indexOrNode);
+        unwrap(this).remove(indexOrNode);
+      },
+      get form() {
+        return wrap(unwrap(this).form);
+      }
+    });
+    registerWrapper(OriginalHTMLSelectElement, HTMLSelectElement, document.createElement("select"));
+    scope.wrappers.HTMLSelectElement = HTMLSelectElement;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var HTMLElement = scope.wrappers.HTMLElement;
+    var mixin = scope.mixin;
+    var registerWrapper = scope.registerWrapper;
+    var unwrap = scope.unwrap;
+    var wrap = scope.wrap;
+    var wrapHTMLCollection = scope.wrapHTMLCollection;
+    var OriginalHTMLTableElement = window.HTMLTableElement;
+    function HTMLTableElement(node) {
+      HTMLElement.call(this, node);
+    }
+    HTMLTableElement.prototype = Object.create(HTMLElement.prototype);
+    mixin(HTMLTableElement.prototype, {
+      get caption() {
+        return wrap(unwrap(this).caption);
+      },
+      createCaption: function() {
+        return wrap(unwrap(this).createCaption());
+      },
+      get tHead() {
+        return wrap(unwrap(this).tHead);
+      },
+      createTHead: function() {
+        return wrap(unwrap(this).createTHead());
+      },
+      createTFoot: function() {
+        return wrap(unwrap(this).createTFoot());
+      },
+      get tFoot() {
+        return wrap(unwrap(this).tFoot);
+      },
+      get tBodies() {
+        return wrapHTMLCollection(unwrap(this).tBodies);
+      },
+      createTBody: function() {
+        return wrap(unwrap(this).createTBody());
+      },
+      get rows() {
+        return wrapHTMLCollection(unwrap(this).rows);
+      },
+      insertRow: function(index) {
+        return wrap(unwrap(this).insertRow(index));
+      }
+    });
+    registerWrapper(OriginalHTMLTableElement, HTMLTableElement, document.createElement("table"));
+    scope.wrappers.HTMLTableElement = HTMLTableElement;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var HTMLElement = scope.wrappers.HTMLElement;
+    var mixin = scope.mixin;
+    var registerWrapper = scope.registerWrapper;
+    var wrapHTMLCollection = scope.wrapHTMLCollection;
+    var unwrap = scope.unwrap;
+    var wrap = scope.wrap;
+    var OriginalHTMLTableSectionElement = window.HTMLTableSectionElement;
+    function HTMLTableSectionElement(node) {
+      HTMLElement.call(this, node);
+    }
+    HTMLTableSectionElement.prototype = Object.create(HTMLElement.prototype);
+    mixin(HTMLTableSectionElement.prototype, {
+      constructor: HTMLTableSectionElement,
+      get rows() {
+        return wrapHTMLCollection(unwrap(this).rows);
+      },
+      insertRow: function(index) {
+        return wrap(unwrap(this).insertRow(index));
+      }
+    });
+    registerWrapper(OriginalHTMLTableSectionElement, HTMLTableSectionElement, document.createElement("thead"));
+    scope.wrappers.HTMLTableSectionElement = HTMLTableSectionElement;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var HTMLElement = scope.wrappers.HTMLElement;
+    var mixin = scope.mixin;
+    var registerWrapper = scope.registerWrapper;
+    var wrapHTMLCollection = scope.wrapHTMLCollection;
+    var unwrap = scope.unwrap;
+    var wrap = scope.wrap;
+    var OriginalHTMLTableRowElement = window.HTMLTableRowElement;
+    function HTMLTableRowElement(node) {
+      HTMLElement.call(this, node);
+    }
+    HTMLTableRowElement.prototype = Object.create(HTMLElement.prototype);
+    mixin(HTMLTableRowElement.prototype, {
+      get cells() {
+        return wrapHTMLCollection(unwrap(this).cells);
+      },
+      insertCell: function(index) {
+        return wrap(unwrap(this).insertCell(index));
+      }
+    });
+    registerWrapper(OriginalHTMLTableRowElement, HTMLTableRowElement, document.createElement("tr"));
+    scope.wrappers.HTMLTableRowElement = HTMLTableRowElement;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var HTMLContentElement = scope.wrappers.HTMLContentElement;
+    var HTMLElement = scope.wrappers.HTMLElement;
+    var HTMLShadowElement = scope.wrappers.HTMLShadowElement;
+    var HTMLTemplateElement = scope.wrappers.HTMLTemplateElement;
+    var mixin = scope.mixin;
+    var registerWrapper = scope.registerWrapper;
+    var OriginalHTMLUnknownElement = window.HTMLUnknownElement;
+    function HTMLUnknownElement(node) {
+      switch (node.localName) {
+       case "content":
+        return new HTMLContentElement(node);
+
+       case "shadow":
+        return new HTMLShadowElement(node);
+
+       case "template":
+        return new HTMLTemplateElement(node);
+      }
+      HTMLElement.call(this, node);
+    }
+    HTMLUnknownElement.prototype = Object.create(HTMLElement.prototype);
+    registerWrapper(OriginalHTMLUnknownElement, HTMLUnknownElement);
+    scope.wrappers.HTMLUnknownElement = HTMLUnknownElement;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var Element = scope.wrappers.Element;
+    var HTMLElement = scope.wrappers.HTMLElement;
+    var registerObject = scope.registerObject;
+    var defineWrapGetter = scope.defineWrapGetter;
+    var SVG_NS = "http://www.w3.org/2000/svg";
+    var svgTitleElement = document.createElementNS(SVG_NS, "title");
+    var SVGTitleElement = registerObject(svgTitleElement);
+    var SVGElement = Object.getPrototypeOf(SVGTitleElement.prototype).constructor;
+    if (!("classList" in svgTitleElement)) {
+      var descr = Object.getOwnPropertyDescriptor(Element.prototype, "classList");
+      Object.defineProperty(HTMLElement.prototype, "classList", descr);
+      delete Element.prototype.classList;
+    }
+    defineWrapGetter(SVGElement, "ownerSVGElement");
+    scope.wrappers.SVGElement = SVGElement;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var mixin = scope.mixin;
+    var registerWrapper = scope.registerWrapper;
+    var unwrap = scope.unwrap;
+    var wrap = scope.wrap;
+    var OriginalSVGUseElement = window.SVGUseElement;
+    var SVG_NS = "http://www.w3.org/2000/svg";
+    var gWrapper = wrap(document.createElementNS(SVG_NS, "g"));
+    var useElement = document.createElementNS(SVG_NS, "use");
+    var SVGGElement = gWrapper.constructor;
+    var parentInterfacePrototype = Object.getPrototypeOf(SVGGElement.prototype);
+    var parentInterface = parentInterfacePrototype.constructor;
+    function SVGUseElement(impl) {
+      parentInterface.call(this, impl);
+    }
+    SVGUseElement.prototype = Object.create(parentInterfacePrototype);
+    if ("instanceRoot" in useElement) {
+      mixin(SVGUseElement.prototype, {
+        get instanceRoot() {
+          return wrap(unwrap(this).instanceRoot);
+        },
+        get animatedInstanceRoot() {
+          return wrap(unwrap(this).animatedInstanceRoot);
+        }
+      });
+    }
+    registerWrapper(OriginalSVGUseElement, SVGUseElement, useElement);
+    scope.wrappers.SVGUseElement = SVGUseElement;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var EventTarget = scope.wrappers.EventTarget;
+    var mixin = scope.mixin;
+    var registerWrapper = scope.registerWrapper;
+    var unsafeUnwrap = scope.unsafeUnwrap;
+    var wrap = scope.wrap;
+    var OriginalSVGElementInstance = window.SVGElementInstance;
+    if (!OriginalSVGElementInstance) return;
+    function SVGElementInstance(impl) {
+      EventTarget.call(this, impl);
+    }
+    SVGElementInstance.prototype = Object.create(EventTarget.prototype);
+    mixin(SVGElementInstance.prototype, {
+      get correspondingElement() {
+        return wrap(unsafeUnwrap(this).correspondingElement);
+      },
+      get correspondingUseElement() {
+        return wrap(unsafeUnwrap(this).correspondingUseElement);
+      },
+      get parentNode() {
+        return wrap(unsafeUnwrap(this).parentNode);
+      },
+      get childNodes() {
+        throw new Error("Not implemented");
+      },
+      get firstChild() {
+        return wrap(unsafeUnwrap(this).firstChild);
+      },
+      get lastChild() {
+        return wrap(unsafeUnwrap(this).lastChild);
+      },
+      get previousSibling() {
+        return wrap(unsafeUnwrap(this).previousSibling);
+      },
+      get nextSibling() {
+        return wrap(unsafeUnwrap(this).nextSibling);
+      }
+    });
+    registerWrapper(OriginalSVGElementInstance, SVGElementInstance);
+    scope.wrappers.SVGElementInstance = SVGElementInstance;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var mixin = scope.mixin;
+    var registerWrapper = scope.registerWrapper;
+    var setWrapper = scope.setWrapper;
+    var unsafeUnwrap = scope.unsafeUnwrap;
+    var unwrap = scope.unwrap;
+    var unwrapIfNeeded = scope.unwrapIfNeeded;
+    var wrap = scope.wrap;
+    var OriginalCanvasRenderingContext2D = window.CanvasRenderingContext2D;
+    function CanvasRenderingContext2D(impl) {
+      setWrapper(impl, this);
+    }
+    mixin(CanvasRenderingContext2D.prototype, {
+      get canvas() {
+        return wrap(unsafeUnwrap(this).canvas);
+      },
+      drawImage: function() {
+        arguments[0] = unwrapIfNeeded(arguments[0]);
+        unsafeUnwrap(this).drawImage.apply(unsafeUnwrap(this), arguments);
+      },
+      createPattern: function() {
+        arguments[0] = unwrap(arguments[0]);
+        return unsafeUnwrap(this).createPattern.apply(unsafeUnwrap(this), arguments);
+      }
+    });
+    registerWrapper(OriginalCanvasRenderingContext2D, CanvasRenderingContext2D, document.createElement("canvas").getContext("2d"));
+    scope.wrappers.CanvasRenderingContext2D = CanvasRenderingContext2D;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var mixin = scope.mixin;
+    var registerWrapper = scope.registerWrapper;
+    var setWrapper = scope.setWrapper;
+    var unsafeUnwrap = scope.unsafeUnwrap;
+    var unwrapIfNeeded = scope.unwrapIfNeeded;
+    var wrap = scope.wrap;
+    var OriginalWebGLRenderingContext = window.WebGLRenderingContext;
+    if (!OriginalWebGLRenderingContext) return;
+    function WebGLRenderingContext(impl) {
+      setWrapper(impl, this);
+    }
+    mixin(WebGLRenderingContext.prototype, {
+      get canvas() {
+        return wrap(unsafeUnwrap(this).canvas);
+      },
+      texImage2D: function() {
+        arguments[5] = unwrapIfNeeded(arguments[5]);
+        unsafeUnwrap(this).texImage2D.apply(unsafeUnwrap(this), arguments);
+      },
+      texSubImage2D: function() {
+        arguments[6] = unwrapIfNeeded(arguments[6]);
+        unsafeUnwrap(this).texSubImage2D.apply(unsafeUnwrap(this), arguments);
+      }
+    });
+    var instanceProperties = /WebKit/.test(navigator.userAgent) ? {
+      drawingBufferHeight: null,
+      drawingBufferWidth: null
+    } : {};
+    registerWrapper(OriginalWebGLRenderingContext, WebGLRenderingContext, instanceProperties);
+    scope.wrappers.WebGLRenderingContext = WebGLRenderingContext;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var registerWrapper = scope.registerWrapper;
+    var setWrapper = scope.setWrapper;
+    var unsafeUnwrap = scope.unsafeUnwrap;
+    var unwrap = scope.unwrap;
+    var unwrapIfNeeded = scope.unwrapIfNeeded;
+    var wrap = scope.wrap;
+    var OriginalRange = window.Range;
+    function Range(impl) {
+      setWrapper(impl, this);
+    }
+    Range.prototype = {
+      get startContainer() {
+        return wrap(unsafeUnwrap(this).startContainer);
+      },
+      get endContainer() {
+        return wrap(unsafeUnwrap(this).endContainer);
+      },
+      get commonAncestorContainer() {
+        return wrap(unsafeUnwrap(this).commonAncestorContainer);
+      },
+      setStart: function(refNode, offset) {
+        unsafeUnwrap(this).setStart(unwrapIfNeeded(refNode), offset);
+      },
+      setEnd: function(refNode, offset) {
+        unsafeUnwrap(this).setEnd(unwrapIfNeeded(refNode), offset);
+      },
+      setStartBefore: function(refNode) {
+        unsafeUnwrap(this).setStartBefore(unwrapIfNeeded(refNode));
+      },
+      setStartAfter: function(refNode) {
+        unsafeUnwrap(this).setStartAfter(unwrapIfNeeded(refNode));
+      },
+      setEndBefore: function(refNode) {
+        unsafeUnwrap(this).setEndBefore(unwrapIfNeeded(refNode));
+      },
+      setEndAfter: function(refNode) {
+        unsafeUnwrap(this).setEndAfter(unwrapIfNeeded(refNode));
+      },
+      selectNode: function(refNode) {
+        unsafeUnwrap(this).selectNode(unwrapIfNeeded(refNode));
+      },
+      selectNodeContents: function(refNode) {
+        unsafeUnwrap(this).selectNodeContents(unwrapIfNeeded(refNode));
+      },
+      compareBoundaryPoints: function(how, sourceRange) {
+        return unsafeUnwrap(this).compareBoundaryPoints(how, unwrap(sourceRange));
+      },
+      extractContents: function() {
+        return wrap(unsafeUnwrap(this).extractContents());
+      },
+      cloneContents: function() {
+        return wrap(unsafeUnwrap(this).cloneContents());
+      },
+      insertNode: function(node) {
+        unsafeUnwrap(this).insertNode(unwrapIfNeeded(node));
+      },
+      surroundContents: function(newParent) {
+        unsafeUnwrap(this).surroundContents(unwrapIfNeeded(newParent));
+      },
+      cloneRange: function() {
+        return wrap(unsafeUnwrap(this).cloneRange());
+      },
+      isPointInRange: function(node, offset) {
+        return unsafeUnwrap(this).isPointInRange(unwrapIfNeeded(node), offset);
+      },
+      comparePoint: function(node, offset) {
+        return unsafeUnwrap(this).comparePoint(unwrapIfNeeded(node), offset);
+      },
+      intersectsNode: function(node) {
+        return unsafeUnwrap(this).intersectsNode(unwrapIfNeeded(node));
+      },
+      toString: function() {
+        return unsafeUnwrap(this).toString();
+      }
+    };
+    if (OriginalRange.prototype.createContextualFragment) {
+      Range.prototype.createContextualFragment = function(html) {
+        return wrap(unsafeUnwrap(this).createContextualFragment(html));
+      };
+    }
+    registerWrapper(window.Range, Range, document.createRange());
+    scope.wrappers.Range = Range;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var GetElementsByInterface = scope.GetElementsByInterface;
+    var ParentNodeInterface = scope.ParentNodeInterface;
+    var SelectorsInterface = scope.SelectorsInterface;
+    var mixin = scope.mixin;
+    var registerObject = scope.registerObject;
+    var DocumentFragment = registerObject(document.createDocumentFragment());
+    mixin(DocumentFragment.prototype, ParentNodeInterface);
+    mixin(DocumentFragment.prototype, SelectorsInterface);
+    mixin(DocumentFragment.prototype, GetElementsByInterface);
+    var Comment = registerObject(document.createComment(""));
+    scope.wrappers.Comment = Comment;
+    scope.wrappers.DocumentFragment = DocumentFragment;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var DocumentFragment = scope.wrappers.DocumentFragment;
+    var TreeScope = scope.TreeScope;
+    var elementFromPoint = scope.elementFromPoint;
+    var getInnerHTML = scope.getInnerHTML;
+    var getTreeScope = scope.getTreeScope;
+    var mixin = scope.mixin;
+    var rewrap = scope.rewrap;
+    var setInnerHTML = scope.setInnerHTML;
+    var unsafeUnwrap = scope.unsafeUnwrap;
+    var unwrap = scope.unwrap;
+    var shadowHostTable = new WeakMap();
+    var nextOlderShadowTreeTable = new WeakMap();
+    var spaceCharRe = /[ \t\n\r\f]/;
+    function ShadowRoot(hostWrapper) {
+      var node = unwrap(unsafeUnwrap(hostWrapper).ownerDocument.createDocumentFragment());
+      DocumentFragment.call(this, node);
+      rewrap(node, this);
+      var oldShadowRoot = hostWrapper.shadowRoot;
+      nextOlderShadowTreeTable.set(this, oldShadowRoot);
+      this.treeScope_ = new TreeScope(this, getTreeScope(oldShadowRoot || hostWrapper));
+      shadowHostTable.set(this, hostWrapper);
+    }
+    ShadowRoot.prototype = Object.create(DocumentFragment.prototype);
+    mixin(ShadowRoot.prototype, {
+      constructor: ShadowRoot,
+      get innerHTML() {
+        return getInnerHTML(this);
+      },
+      set innerHTML(value) {
+        setInnerHTML(this, value);
+        this.invalidateShadowRenderer();
+      },
+      get olderShadowRoot() {
+        return nextOlderShadowTreeTable.get(this) || null;
+      },
+      get host() {
+        return shadowHostTable.get(this) || null;
+      },
+      invalidateShadowRenderer: function() {
+        return shadowHostTable.get(this).invalidateShadowRenderer();
+      },
+      elementFromPoint: function(x, y) {
+        return elementFromPoint(this, this.ownerDocument, x, y);
+      },
+      getElementById: function(id) {
+        if (spaceCharRe.test(id)) return null;
+        return this.querySelector('[id="' + id + '"]');
+      }
+    });
+    scope.wrappers.ShadowRoot = ShadowRoot;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var Element = scope.wrappers.Element;
+    var HTMLContentElement = scope.wrappers.HTMLContentElement;
+    var HTMLShadowElement = scope.wrappers.HTMLShadowElement;
+    var Node = scope.wrappers.Node;
+    var ShadowRoot = scope.wrappers.ShadowRoot;
+    var assert = scope.assert;
+    var getTreeScope = scope.getTreeScope;
+    var mixin = scope.mixin;
+    var oneOf = scope.oneOf;
+    var unsafeUnwrap = scope.unsafeUnwrap;
+    var unwrap = scope.unwrap;
+    var wrap = scope.wrap;
+    var ArraySplice = scope.ArraySplice;
+    function updateWrapperUpAndSideways(wrapper) {
+      wrapper.previousSibling_ = wrapper.previousSibling;
+      wrapper.nextSibling_ = wrapper.nextSibling;
+      wrapper.parentNode_ = wrapper.parentNode;
+    }
+    function updateWrapperDown(wrapper) {
+      wrapper.firstChild_ = wrapper.firstChild;
+      wrapper.lastChild_ = wrapper.lastChild;
+    }
+    function updateAllChildNodes(parentNodeWrapper) {
+      assert(parentNodeWrapper instanceof Node);
+      for (var childWrapper = parentNodeWrapper.firstChild; childWrapper; childWrapper = childWrapper.nextSibling) {
+        updateWrapperUpAndSideways(childWrapper);
+      }
+      updateWrapperDown(parentNodeWrapper);
+    }
+    function insertBefore(parentNodeWrapper, newChildWrapper, refChildWrapper) {
+      var parentNode = unwrap(parentNodeWrapper);
+      var newChild = unwrap(newChildWrapper);
+      var refChild = refChildWrapper ? unwrap(refChildWrapper) : null;
+      remove(newChildWrapper);
+      updateWrapperUpAndSideways(newChildWrapper);
+      if (!refChildWrapper) {
+        parentNodeWrapper.lastChild_ = parentNodeWrapper.lastChild;
+        if (parentNodeWrapper.lastChild === parentNodeWrapper.firstChild) parentNodeWrapper.firstChild_ = parentNodeWrapper.firstChild;
+        var lastChildWrapper = wrap(parentNode.lastChild);
+        if (lastChildWrapper) lastChildWrapper.nextSibling_ = lastChildWrapper.nextSibling;
+      } else {
+        if (parentNodeWrapper.firstChild === refChildWrapper) parentNodeWrapper.firstChild_ = refChildWrapper;
+        refChildWrapper.previousSibling_ = refChildWrapper.previousSibling;
+      }
+      scope.originalInsertBefore.call(parentNode, newChild, refChild);
+    }
+    function remove(nodeWrapper) {
+      var node = unwrap(nodeWrapper);
+      var parentNode = node.parentNode;
+      if (!parentNode) return;
+      var parentNodeWrapper = wrap(parentNode);
+      updateWrapperUpAndSideways(nodeWrapper);
+      if (nodeWrapper.previousSibling) nodeWrapper.previousSibling.nextSibling_ = nodeWrapper;
+      if (nodeWrapper.nextSibling) nodeWrapper.nextSibling.previousSibling_ = nodeWrapper;
+      if (parentNodeWrapper.lastChild === nodeWrapper) parentNodeWrapper.lastChild_ = nodeWrapper;
+      if (parentNodeWrapper.firstChild === nodeWrapper) parentNodeWrapper.firstChild_ = nodeWrapper;
+      scope.originalRemoveChild.call(parentNode, node);
+    }
+    var distributedNodesTable = new WeakMap();
+    var destinationInsertionPointsTable = new WeakMap();
+    var rendererForHostTable = new WeakMap();
+    function resetDistributedNodes(insertionPoint) {
+      distributedNodesTable.set(insertionPoint, []);
+    }
+    function getDistributedNodes(insertionPoint) {
+      var rv = distributedNodesTable.get(insertionPoint);
+      if (!rv) distributedNodesTable.set(insertionPoint, rv = []);
+      return rv;
+    }
+    function getChildNodesSnapshot(node) {
+      var result = [], i = 0;
+      for (var child = node.firstChild; child; child = child.nextSibling) {
+        result[i++] = child;
+      }
+      return result;
+    }
+    var request = oneOf(window, [ "requestAnimationFrame", "mozRequestAnimationFrame", "webkitRequestAnimationFrame", "setTimeout" ]);
+    var pendingDirtyRenderers = [];
+    var renderTimer;
+    function renderAllPending() {
+      for (var i = 0; i < pendingDirtyRenderers.length; i++) {
+        var renderer = pendingDirtyRenderers[i];
+        var parentRenderer = renderer.parentRenderer;
+        if (parentRenderer && parentRenderer.dirty) continue;
+        renderer.render();
+      }
+      pendingDirtyRenderers = [];
+    }
+    function handleRequestAnimationFrame() {
+      renderTimer = null;
+      renderAllPending();
+    }
+    function getRendererForHost(host) {
+      var renderer = rendererForHostTable.get(host);
+      if (!renderer) {
+        renderer = new ShadowRenderer(host);
+        rendererForHostTable.set(host, renderer);
+      }
+      return renderer;
+    }
+    function getShadowRootAncestor(node) {
+      var root = getTreeScope(node).root;
+      if (root instanceof ShadowRoot) return root;
+      return null;
+    }
+    function getRendererForShadowRoot(shadowRoot) {
+      return getRendererForHost(shadowRoot.host);
+    }
+    var spliceDiff = new ArraySplice();
+    spliceDiff.equals = function(renderNode, rawNode) {
+      return unwrap(renderNode.node) === rawNode;
+    };
+    function RenderNode(node) {
+      this.skip = false;
+      this.node = node;
+      this.childNodes = [];
+    }
+    RenderNode.prototype = {
+      append: function(node) {
+        var rv = new RenderNode(node);
+        this.childNodes.push(rv);
+        return rv;
+      },
+      sync: function(opt_added) {
+        if (this.skip) return;
+        var nodeWrapper = this.node;
+        var newChildren = this.childNodes;
+        var oldChildren = getChildNodesSnapshot(unwrap(nodeWrapper));
+        var added = opt_added || new WeakMap();
+        var splices = spliceDiff.calculateSplices(newChildren, oldChildren);
+        var newIndex = 0, oldIndex = 0;
+        var lastIndex = 0;
+        for (var i = 0; i < splices.length; i++) {
+          var splice = splices[i];
+          for (;lastIndex < splice.index; lastIndex++) {
+            oldIndex++;
+            newChildren[newIndex++].sync(added);
+          }
+          var removedCount = splice.removed.length;
+          for (var j = 0; j < removedCount; j++) {
+            var wrapper = wrap(oldChildren[oldIndex++]);
+            if (!added.get(wrapper)) remove(wrapper);
+          }
+          var addedCount = splice.addedCount;
+          var refNode = oldChildren[oldIndex] && wrap(oldChildren[oldIndex]);
+          for (var j = 0; j < addedCount; j++) {
+            var newChildRenderNode = newChildren[newIndex++];
+            var newChildWrapper = newChildRenderNode.node;
+            insertBefore(nodeWrapper, newChildWrapper, refNode);
+            added.set(newChildWrapper, true);
+            newChildRenderNode.sync(added);
+          }
+          lastIndex += addedCount;
+        }
+        for (var i = lastIndex; i < newChildren.length; i++) {
+          newChildren[i].sync(added);
+        }
+      }
+    };
+    function ShadowRenderer(host) {
+      this.host = host;
+      this.dirty = false;
+      this.invalidateAttributes();
+      this.associateNode(host);
+    }
+    ShadowRenderer.prototype = {
+      render: function(opt_renderNode) {
+        if (!this.dirty) return;
+        this.invalidateAttributes();
+        var host = this.host;
+        this.distribution(host);
+        var renderNode = opt_renderNode || new RenderNode(host);
+        this.buildRenderTree(renderNode, host);
+        var topMostRenderer = !opt_renderNode;
+        if (topMostRenderer) renderNode.sync();
+        this.dirty = false;
+      },
+      get parentRenderer() {
+        return getTreeScope(this.host).renderer;
+      },
+      invalidate: function() {
+        if (!this.dirty) {
+          this.dirty = true;
+          var parentRenderer = this.parentRenderer;
+          if (parentRenderer) parentRenderer.invalidate();
+          pendingDirtyRenderers.push(this);
+          if (renderTimer) return;
+          renderTimer = window[request](handleRequestAnimationFrame, 0);
+        }
+      },
+      distribution: function(root) {
+        this.resetAllSubtrees(root);
+        this.distributionResolution(root);
+      },
+      resetAll: function(node) {
+        if (isInsertionPoint(node)) resetDistributedNodes(node); else resetDestinationInsertionPoints(node);
+        this.resetAllSubtrees(node);
+      },
+      resetAllSubtrees: function(node) {
+        for (var child = node.firstChild; child; child = child.nextSibling) {
+          this.resetAll(child);
+        }
+        if (node.shadowRoot) this.resetAll(node.shadowRoot);
+        if (node.olderShadowRoot) this.resetAll(node.olderShadowRoot);
+      },
+      distributionResolution: function(node) {
+        if (isShadowHost(node)) {
+          var shadowHost = node;
+          var pool = poolPopulation(shadowHost);
+          var shadowTrees = getShadowTrees(shadowHost);
+          for (var i = 0; i < shadowTrees.length; i++) {
+            this.poolDistribution(shadowTrees[i], pool);
+          }
+          for (var i = shadowTrees.length - 1; i >= 0; i--) {
+            var shadowTree = shadowTrees[i];
+            var shadow = getShadowInsertionPoint(shadowTree);
+            if (shadow) {
+              var olderShadowRoot = shadowTree.olderShadowRoot;
+              if (olderShadowRoot) {
+                pool = poolPopulation(olderShadowRoot);
+              }
+              for (var j = 0; j < pool.length; j++) {
+                destributeNodeInto(pool[j], shadow);
+              }
+            }
+            this.distributionResolution(shadowTree);
+          }
+        }
+        for (var child = node.firstChild; child; child = child.nextSibling) {
+          this.distributionResolution(child);
+        }
+      },
+      poolDistribution: function(node, pool) {
+        if (node instanceof HTMLShadowElement) return;
+        if (node instanceof HTMLContentElement) {
+          var content = node;
+          this.updateDependentAttributes(content.getAttribute("select"));
+          var anyDistributed = false;
+          for (var i = 0; i < pool.length; i++) {
+            var node = pool[i];
+            if (!node) continue;
+            if (matches(node, content)) {
+              destributeNodeInto(node, content);
+              pool[i] = undefined;
+              anyDistributed = true;
+            }
+          }
+          if (!anyDistributed) {
+            for (var child = content.firstChild; child; child = child.nextSibling) {
+              destributeNodeInto(child, content);
+            }
+          }
+          return;
+        }
+        for (var child = node.firstChild; child; child = child.nextSibling) {
+          this.poolDistribution(child, pool);
+        }
+      },
+      buildRenderTree: function(renderNode, node) {
+        var children = this.compose(node);
+        for (var i = 0; i < children.length; i++) {
+          var child = children[i];
+          var childRenderNode = renderNode.append(child);
+          this.buildRenderTree(childRenderNode, child);
+        }
+        if (isShadowHost(node)) {
+          var renderer = getRendererForHost(node);
+          renderer.dirty = false;
+        }
+      },
+      compose: function(node) {
+        var children = [];
+        var p = node.shadowRoot || node;
+        for (var child = p.firstChild; child; child = child.nextSibling) {
+          if (isInsertionPoint(child)) {
+            this.associateNode(p);
+            var distributedNodes = getDistributedNodes(child);
+            for (var j = 0; j < distributedNodes.length; j++) {
+              var distributedNode = distributedNodes[j];
+              if (isFinalDestination(child, distributedNode)) children.push(distributedNode);
+            }
+          } else {
+            children.push(child);
+          }
+        }
+        return children;
+      },
+      invalidateAttributes: function() {
+        this.attributes = Object.create(null);
+      },
+      updateDependentAttributes: function(selector) {
+        if (!selector) return;
+        var attributes = this.attributes;
+        if (/\.\w+/.test(selector)) attributes["class"] = true;
+        if (/#\w+/.test(selector)) attributes["id"] = true;
+        selector.replace(/\[\s*([^\s=\|~\]]+)/g, function(_, name) {
+          attributes[name] = true;
+        });
+      },
+      dependsOnAttribute: function(name) {
+        return this.attributes[name];
+      },
+      associateNode: function(node) {
+        unsafeUnwrap(node).polymerShadowRenderer_ = this;
+      }
+    };
+    function poolPopulation(node) {
+      var pool = [];
+      for (var child = node.firstChild; child; child = child.nextSibling) {
+        if (isInsertionPoint(child)) {
+          pool.push.apply(pool, getDistributedNodes(child));
+        } else {
+          pool.push(child);
+        }
+      }
+      return pool;
+    }
+    function getShadowInsertionPoint(node) {
+      if (node instanceof HTMLShadowElement) return node;
+      if (node instanceof HTMLContentElement) return null;
+      for (var child = node.firstChild; child; child = child.nextSibling) {
+        var res = getShadowInsertionPoint(child);
+        if (res) return res;
+      }
+      return null;
+    }
+    function destributeNodeInto(child, insertionPoint) {
+      getDistributedNodes(insertionPoint).push(child);
+      var points = destinationInsertionPointsTable.get(child);
+      if (!points) destinationInsertionPointsTable.set(child, [ insertionPoint ]); else points.push(insertionPoint);
+    }
+    function getDestinationInsertionPoints(node) {
+      return destinationInsertionPointsTable.get(node);
+    }
+    function resetDestinationInsertionPoints(node) {
+      destinationInsertionPointsTable.set(node, undefined);
+    }
+    var selectorStartCharRe = /^(:not\()?[*.#[a-zA-Z_|]/;
+    function matches(node, contentElement) {
+      var select = contentElement.getAttribute("select");
+      if (!select) return true;
+      select = select.trim();
+      if (!select) return true;
+      if (!(node instanceof Element)) return false;
+      if (!selectorStartCharRe.test(select)) return false;
+      try {
+        return node.matches(select);
+      } catch (ex) {
+        return false;
+      }
+    }
+    function isFinalDestination(insertionPoint, node) {
+      var points = getDestinationInsertionPoints(node);
+      return points && points[points.length - 1] === insertionPoint;
+    }
+    function isInsertionPoint(node) {
+      return node instanceof HTMLContentElement || node instanceof HTMLShadowElement;
+    }
+    function isShadowHost(shadowHost) {
+      return shadowHost.shadowRoot;
+    }
+    function getShadowTrees(host) {
+      var trees = [];
+      for (var tree = host.shadowRoot; tree; tree = tree.olderShadowRoot) {
+        trees.push(tree);
+      }
+      return trees;
+    }
+    function render(host) {
+      new ShadowRenderer(host).render();
+    }
+    Node.prototype.invalidateShadowRenderer = function(force) {
+      var renderer = unsafeUnwrap(this).polymerShadowRenderer_;
+      if (renderer) {
+        renderer.invalidate();
+        return true;
+      }
+      return false;
+    };
+    HTMLContentElement.prototype.getDistributedNodes = HTMLShadowElement.prototype.getDistributedNodes = function() {
+      renderAllPending();
+      return getDistributedNodes(this);
+    };
+    Element.prototype.getDestinationInsertionPoints = function() {
+      renderAllPending();
+      return getDestinationInsertionPoints(this) || [];
+    };
+    HTMLContentElement.prototype.nodeIsInserted_ = HTMLShadowElement.prototype.nodeIsInserted_ = function() {
+      this.invalidateShadowRenderer();
+      var shadowRoot = getShadowRootAncestor(this);
+      var renderer;
+      if (shadowRoot) renderer = getRendererForShadowRoot(shadowRoot);
+      unsafeUnwrap(this).polymerShadowRenderer_ = renderer;
+      if (renderer) renderer.invalidate();
+    };
+    scope.getRendererForHost = getRendererForHost;
+    scope.getShadowTrees = getShadowTrees;
+    scope.renderAllPending = renderAllPending;
+    scope.getDestinationInsertionPoints = getDestinationInsertionPoints;
+    scope.visual = {
+      insertBefore: insertBefore,
+      remove: remove
+    };
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var HTMLElement = scope.wrappers.HTMLElement;
+    var assert = scope.assert;
+    var mixin = scope.mixin;
+    var registerWrapper = scope.registerWrapper;
+    var unwrap = scope.unwrap;
+    var wrap = scope.wrap;
+    var elementsWithFormProperty = [ "HTMLButtonElement", "HTMLFieldSetElement", "HTMLInputElement", "HTMLKeygenElement", "HTMLLabelElement", "HTMLLegendElement", "HTMLObjectElement", "HTMLOutputElement", "HTMLTextAreaElement" ];
+    function createWrapperConstructor(name) {
+      if (!window[name]) return;
+      assert(!scope.wrappers[name]);
+      var GeneratedWrapper = function(node) {
+        HTMLElement.call(this, node);
+      };
+      GeneratedWrapper.prototype = Object.create(HTMLElement.prototype);
+      mixin(GeneratedWrapper.prototype, {
+        get form() {
+          return wrap(unwrap(this).form);
+        }
+      });
+      registerWrapper(window[name], GeneratedWrapper, document.createElement(name.slice(4, -7)));
+      scope.wrappers[name] = GeneratedWrapper;
+    }
+    elementsWithFormProperty.forEach(createWrapperConstructor);
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var registerWrapper = scope.registerWrapper;
+    var setWrapper = scope.setWrapper;
+    var unsafeUnwrap = scope.unsafeUnwrap;
+    var unwrap = scope.unwrap;
+    var unwrapIfNeeded = scope.unwrapIfNeeded;
+    var wrap = scope.wrap;
+    var OriginalSelection = window.Selection;
+    function Selection(impl) {
+      setWrapper(impl, this);
+    }
+    Selection.prototype = {
+      get anchorNode() {
+        return wrap(unsafeUnwrap(this).anchorNode);
+      },
+      get focusNode() {
+        return wrap(unsafeUnwrap(this).focusNode);
+      },
+      addRange: function(range) {
+        unsafeUnwrap(this).addRange(unwrap(range));
+      },
+      collapse: function(node, index) {
+        unsafeUnwrap(this).collapse(unwrapIfNeeded(node), index);
+      },
+      containsNode: function(node, allowPartial) {
+        return unsafeUnwrap(this).containsNode(unwrapIfNeeded(node), allowPartial);
+      },
+      extend: function(node, offset) {
+        unsafeUnwrap(this).extend(unwrapIfNeeded(node), offset);
+      },
+      getRangeAt: function(index) {
+        return wrap(unsafeUnwrap(this).getRangeAt(index));
+      },
+      removeRange: function(range) {
+        unsafeUnwrap(this).removeRange(unwrap(range));
+      },
+      selectAllChildren: function(node) {
+        unsafeUnwrap(this).selectAllChildren(unwrapIfNeeded(node));
+      },
+      toString: function() {
+        return unsafeUnwrap(this).toString();
+      }
+    };
+    registerWrapper(window.Selection, Selection, window.getSelection());
+    scope.wrappers.Selection = Selection;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var GetElementsByInterface = scope.GetElementsByInterface;
+    var Node = scope.wrappers.Node;
+    var ParentNodeInterface = scope.ParentNodeInterface;
+    var Selection = scope.wrappers.Selection;
+    var SelectorsInterface = scope.SelectorsInterface;
+    var ShadowRoot = scope.wrappers.ShadowRoot;
+    var TreeScope = scope.TreeScope;
+    var cloneNode = scope.cloneNode;
+    var defineWrapGetter = scope.defineWrapGetter;
+    var elementFromPoint = scope.elementFromPoint;
+    var forwardMethodsToWrapper = scope.forwardMethodsToWrapper;
+    var matchesNames = scope.matchesNames;
+    var mixin = scope.mixin;
+    var registerWrapper = scope.registerWrapper;
+    var renderAllPending = scope.renderAllPending;
+    var rewrap = scope.rewrap;
+    var setWrapper = scope.setWrapper;
+    var unsafeUnwrap = scope.unsafeUnwrap;
+    var unwrap = scope.unwrap;
+    var wrap = scope.wrap;
+    var wrapEventTargetMethods = scope.wrapEventTargetMethods;
+    var wrapNodeList = scope.wrapNodeList;
+    var implementationTable = new WeakMap();
+    function Document(node) {
+      Node.call(this, node);
+      this.treeScope_ = new TreeScope(this, null);
+    }
+    Document.prototype = Object.create(Node.prototype);
+    defineWrapGetter(Document, "documentElement");
+    defineWrapGetter(Document, "body");
+    defineWrapGetter(Document, "head");
+    function wrapMethod(name) {
+      var original = document[name];
+      Document.prototype[name] = function() {
+        return wrap(original.apply(unsafeUnwrap(this), arguments));
+      };
+    }
+    [ "createComment", "createDocumentFragment", "createElement", "createElementNS", "createEvent", "createEventNS", "createRange", "createTextNode", "getElementById" ].forEach(wrapMethod);
+    var originalAdoptNode = document.adoptNode;
+    function adoptNodeNoRemove(node, doc) {
+      originalAdoptNode.call(unsafeUnwrap(doc), unwrap(node));
+      adoptSubtree(node, doc);
+    }
+    function adoptSubtree(node, doc) {
+      if (node.shadowRoot) doc.adoptNode(node.shadowRoot);
+      if (node instanceof ShadowRoot) adoptOlderShadowRoots(node, doc);
+      for (var child = node.firstChild; child; child = child.nextSibling) {
+        adoptSubtree(child, doc);
+      }
+    }
+    function adoptOlderShadowRoots(shadowRoot, doc) {
+      var oldShadowRoot = shadowRoot.olderShadowRoot;
+      if (oldShadowRoot) doc.adoptNode(oldShadowRoot);
+    }
+    var originalGetSelection = document.getSelection;
+    mixin(Document.prototype, {
+      adoptNode: function(node) {
+        if (node.parentNode) node.parentNode.removeChild(node);
+        adoptNodeNoRemove(node, this);
+        return node;
+      },
+      elementFromPoint: function(x, y) {
+        return elementFromPoint(this, this, x, y);
+      },
+      importNode: function(node, deep) {
+        return cloneNode(node, deep, unsafeUnwrap(this));
+      },
+      getSelection: function() {
+        renderAllPending();
+        return new Selection(originalGetSelection.call(unwrap(this)));
+      },
+      getElementsByName: function(name) {
+        return SelectorsInterface.querySelectorAll.call(this, "[name=" + JSON.stringify(String(name)) + "]");
+      }
+    });
+    if (document.registerElement) {
+      var originalRegisterElement = document.registerElement;
+      Document.prototype.registerElement = function(tagName, object) {
+        var prototype, extendsOption;
+        if (object !== undefined) {
+          prototype = object.prototype;
+          extendsOption = object.extends;
+        }
+        if (!prototype) prototype = Object.create(HTMLElement.prototype);
+        if (scope.nativePrototypeTable.get(prototype)) {
+          throw new Error("NotSupportedError");
+        }
+        var proto = Object.getPrototypeOf(prototype);
+        var nativePrototype;
+        var prototypes = [];
+        while (proto) {
+          nativePrototype = scope.nativePrototypeTable.get(proto);
+          if (nativePrototype) break;
+          prototypes.push(proto);
+          proto = Object.getPrototypeOf(proto);
+        }
+        if (!nativePrototype) {
+          throw new Error("NotSupportedError");
+        }
+        var newPrototype = Object.create(nativePrototype);
+        for (var i = prototypes.length - 1; i >= 0; i--) {
+          newPrototype = Object.create(newPrototype);
+        }
+        [ "createdCallback", "attachedCallback", "detachedCallback", "attributeChangedCallback" ].forEach(function(name) {
+          var f = prototype[name];
+          if (!f) return;
+          newPrototype[name] = function() {
+            if (!(wrap(this) instanceof CustomElementConstructor)) {
+              rewrap(this);
+            }
+            f.apply(wrap(this), arguments);
+          };
+        });
+        var p = {
+          prototype: newPrototype
+        };
+        if (extendsOption) p.extends = extendsOption;
+        function CustomElementConstructor(node) {
+          if (!node) {
+            if (extendsOption) {
+              return document.createElement(extendsOption, tagName);
+            } else {
+              return document.createElement(tagName);
+            }
+          }
+          setWrapper(node, this);
+        }
+        CustomElementConstructor.prototype = prototype;
+        CustomElementConstructor.prototype.constructor = CustomElementConstructor;
+        scope.constructorTable.set(newPrototype, CustomElementConstructor);
+        scope.nativePrototypeTable.set(prototype, newPrototype);
+        var nativeConstructor = originalRegisterElement.call(unwrap(this), tagName, p);
+        return CustomElementConstructor;
+      };
+      forwardMethodsToWrapper([ window.HTMLDocument || window.Document ], [ "registerElement" ]);
+    }
+    forwardMethodsToWrapper([ window.HTMLBodyElement, window.HTMLDocument || window.Document, window.HTMLHeadElement, window.HTMLHtmlElement ], [ "appendChild", "compareDocumentPosition", "contains", "getElementsByClassName", "getElementsByTagName", "getElementsByTagNameNS", "insertBefore", "querySelector", "querySelectorAll", "removeChild", "replaceChild" ]);
+    forwardMethodsToWrapper([ window.HTMLBodyElement, window.HTMLHeadElement, window.HTMLHtmlElement ], matchesNames);
+    forwardMethodsToWrapper([ window.HTMLDocument || window.Document ], [ "adoptNode", "importNode", "contains", "createComment", "createDocumentFragment", "createElement", "createElementNS", "createEvent", "createEventNS", "createRange", "createTextNode", "elementFromPoint", "getElementById", "getElementsByName", "getSelection" ]);
+    mixin(Document.prototype, GetElementsByInterface);
+    mixin(Document.prototype, ParentNodeInterface);
+    mixin(Document.prototype, SelectorsInterface);
+    mixin(Document.prototype, {
+      get implementation() {
+        var implementation = implementationTable.get(this);
+        if (implementation) return implementation;
+        implementation = new DOMImplementation(unwrap(this).implementation);
+        implementationTable.set(this, implementation);
+        return implementation;
+      },
+      get defaultView() {
+        return wrap(unwrap(this).defaultView);
+      }
+    });
+    registerWrapper(window.Document, Document, document.implementation.createHTMLDocument(""));
+    if (window.HTMLDocument) registerWrapper(window.HTMLDocument, Document);
+    wrapEventTargetMethods([ window.HTMLBodyElement, window.HTMLDocument || window.Document, window.HTMLHeadElement ]);
+    function DOMImplementation(impl) {
+      setWrapper(impl, this);
+    }
+    function wrapImplMethod(constructor, name) {
+      var original = document.implementation[name];
+      constructor.prototype[name] = function() {
+        return wrap(original.apply(unsafeUnwrap(this), arguments));
+      };
+    }
+    function forwardImplMethod(constructor, name) {
+      var original = document.implementation[name];
+      constructor.prototype[name] = function() {
+        return original.apply(unsafeUnwrap(this), arguments);
+      };
+    }
+    wrapImplMethod(DOMImplementation, "createDocumentType");
+    wrapImplMethod(DOMImplementation, "createDocument");
+    wrapImplMethod(DOMImplementation, "createHTMLDocument");
+    forwardImplMethod(DOMImplementation, "hasFeature");
+    registerWrapper(window.DOMImplementation, DOMImplementation);
+    forwardMethodsToWrapper([ window.DOMImplementation ], [ "createDocumentType", "createDocument", "createHTMLDocument", "hasFeature" ]);
+    scope.adoptNodeNoRemove = adoptNodeNoRemove;
+    scope.wrappers.DOMImplementation = DOMImplementation;
+    scope.wrappers.Document = Document;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var EventTarget = scope.wrappers.EventTarget;
+    var Selection = scope.wrappers.Selection;
+    var mixin = scope.mixin;
+    var registerWrapper = scope.registerWrapper;
+    var renderAllPending = scope.renderAllPending;
+    var unwrap = scope.unwrap;
+    var unwrapIfNeeded = scope.unwrapIfNeeded;
+    var wrap = scope.wrap;
+    var OriginalWindow = window.Window;
+    var originalGetComputedStyle = window.getComputedStyle;
+    var originalGetDefaultComputedStyle = window.getDefaultComputedStyle;
+    var originalGetSelection = window.getSelection;
+    function Window(impl) {
+      EventTarget.call(this, impl);
+    }
+    Window.prototype = Object.create(EventTarget.prototype);
+    OriginalWindow.prototype.getComputedStyle = function(el, pseudo) {
+      return wrap(this || window).getComputedStyle(unwrapIfNeeded(el), pseudo);
+    };
+    if (originalGetDefaultComputedStyle) {
+      OriginalWindow.prototype.getDefaultComputedStyle = function(el, pseudo) {
+        return wrap(this || window).getDefaultComputedStyle(unwrapIfNeeded(el), pseudo);
+      };
+    }
+    OriginalWindow.prototype.getSelection = function() {
+      return wrap(this || window).getSelection();
+    };
+    delete window.getComputedStyle;
+    delete window.getDefaultComputedStyle;
+    delete window.getSelection;
+    [ "addEventListener", "removeEventListener", "dispatchEvent" ].forEach(function(name) {
+      OriginalWindow.prototype[name] = function() {
+        var w = wrap(this || window);
+        return w[name].apply(w, arguments);
+      };
+      delete window[name];
+    });
+    mixin(Window.prototype, {
+      getComputedStyle: function(el, pseudo) {
+        renderAllPending();
+        return originalGetComputedStyle.call(unwrap(this), unwrapIfNeeded(el), pseudo);
+      },
+      getSelection: function() {
+        renderAllPending();
+        return new Selection(originalGetSelection.call(unwrap(this)));
+      },
+      get document() {
+        return wrap(unwrap(this).document);
+      }
+    });
+    if (originalGetDefaultComputedStyle) {
+      Window.prototype.getDefaultComputedStyle = function(el, pseudo) {
+        renderAllPending();
+        return originalGetDefaultComputedStyle.call(unwrap(this), unwrapIfNeeded(el), pseudo);
+      };
+    }
+    registerWrapper(OriginalWindow, Window, window);
+    scope.wrappers.Window = Window;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var unwrap = scope.unwrap;
+    var OriginalDataTransfer = window.DataTransfer || window.Clipboard;
+    var OriginalDataTransferSetDragImage = OriginalDataTransfer.prototype.setDragImage;
+    if (OriginalDataTransferSetDragImage) {
+      OriginalDataTransfer.prototype.setDragImage = function(image, x, y) {
+        OriginalDataTransferSetDragImage.call(this, unwrap(image), x, y);
+      };
+    }
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var registerWrapper = scope.registerWrapper;
+    var setWrapper = scope.setWrapper;
+    var unwrap = scope.unwrap;
+    var OriginalFormData = window.FormData;
+    if (!OriginalFormData) return;
+    function FormData(formElement) {
+      var impl;
+      if (formElement instanceof OriginalFormData) {
+        impl = formElement;
+      } else {
+        impl = new OriginalFormData(formElement && unwrap(formElement));
+      }
+      setWrapper(impl, this);
+    }
+    registerWrapper(OriginalFormData, FormData, new OriginalFormData());
+    scope.wrappers.FormData = FormData;
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var unwrapIfNeeded = scope.unwrapIfNeeded;
+    var originalSend = XMLHttpRequest.prototype.send;
+    XMLHttpRequest.prototype.send = function(obj) {
+      return originalSend.call(this, unwrapIfNeeded(obj));
+    };
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    "use strict";
+    var isWrapperFor = scope.isWrapperFor;
+    var elements = {
+      a: "HTMLAnchorElement",
+      area: "HTMLAreaElement",
+      audio: "HTMLAudioElement",
+      base: "HTMLBaseElement",
+      body: "HTMLBodyElement",
+      br: "HTMLBRElement",
+      button: "HTMLButtonElement",
+      canvas: "HTMLCanvasElement",
+      caption: "HTMLTableCaptionElement",
+      col: "HTMLTableColElement",
+      content: "HTMLContentElement",
+      data: "HTMLDataElement",
+      datalist: "HTMLDataListElement",
+      del: "HTMLModElement",
+      dir: "HTMLDirectoryElement",
+      div: "HTMLDivElement",
+      dl: "HTMLDListElement",
+      embed: "HTMLEmbedElement",
+      fieldset: "HTMLFieldSetElement",
+      font: "HTMLFontElement",
+      form: "HTMLFormElement",
+      frame: "HTMLFrameElement",
+      frameset: "HTMLFrameSetElement",
+      h1: "HTMLHeadingElement",
+      head: "HTMLHeadElement",
+      hr: "HTMLHRElement",
+      html: "HTMLHtmlElement",
+      iframe: "HTMLIFrameElement",
+      img: "HTMLImageElement",
+      input: "HTMLInputElement",
+      keygen: "HTMLKeygenElement",
+      label: "HTMLLabelElement",
+      legend: "HTMLLegendElement",
+      li: "HTMLLIElement",
+      link: "HTMLLinkElement",
+      map: "HTMLMapElement",
+      marquee: "HTMLMarqueeElement",
+      menu: "HTMLMenuElement",
+      menuitem: "HTMLMenuItemElement",
+      meta: "HTMLMetaElement",
+      meter: "HTMLMeterElement",
+      object: "HTMLObjectElement",
+      ol: "HTMLOListElement",
+      optgroup: "HTMLOptGroupElement",
+      option: "HTMLOptionElement",
+      output: "HTMLOutputElement",
+      p: "HTMLParagraphElement",
+      param: "HTMLParamElement",
+      pre: "HTMLPreElement",
+      progress: "HTMLProgressElement",
+      q: "HTMLQuoteElement",
+      script: "HTMLScriptElement",
+      select: "HTMLSelectElement",
+      shadow: "HTMLShadowElement",
+      source: "HTMLSourceElement",
+      span: "HTMLSpanElement",
+      style: "HTMLStyleElement",
+      table: "HTMLTableElement",
+      tbody: "HTMLTableSectionElement",
+      template: "HTMLTemplateElement",
+      textarea: "HTMLTextAreaElement",
+      thead: "HTMLTableSectionElement",
+      time: "HTMLTimeElement",
+      title: "HTMLTitleElement",
+      tr: "HTMLTableRowElement",
+      track: "HTMLTrackElement",
+      ul: "HTMLUListElement",
+      video: "HTMLVideoElement"
+    };
+    function overrideConstructor(tagName) {
+      var nativeConstructorName = elements[tagName];
+      var nativeConstructor = window[nativeConstructorName];
+      if (!nativeConstructor) return;
+      var element = document.createElement(tagName);
+      var wrapperConstructor = element.constructor;
+      window[nativeConstructorName] = wrapperConstructor;
+    }
+    Object.keys(elements).forEach(overrideConstructor);
+    Object.getOwnPropertyNames(scope.wrappers).forEach(function(name) {
+      window[name] = scope.wrappers[name];
+    });
+  })(window.ShadowDOMPolyfill);
+  (function(scope) {
+    var ShadowCSS = {
+      strictStyling: false,
+      registry: {},
+      shimStyling: function(root, name, extendsName) {
+        var scopeStyles = this.prepareRoot(root, name, extendsName);
+        var typeExtension = this.isTypeExtension(extendsName);
+        var scopeSelector = this.makeScopeSelector(name, typeExtension);
+        var cssText = stylesToCssText(scopeStyles, true);
+        cssText = this.scopeCssText(cssText, scopeSelector);
+        if (root) {
+          root.shimmedStyle = cssText;
+        }
+        this.addCssToDocument(cssText, name);
+      },
+      shimStyle: function(style, selector) {
+        return this.shimCssText(style.textContent, selector);
+      },
+      shimCssText: function(cssText, selector) {
+        cssText = this.insertDirectives(cssText);
+        return this.scopeCssText(cssText, selector);
+      },
+      makeScopeSelector: function(name, typeExtension) {
+        if (name) {
+          return typeExtension ? "[is=" + name + "]" : name;
+        }
+        return "";
+      },
+      isTypeExtension: function(extendsName) {
+        return extendsName && extendsName.indexOf("-") < 0;
+      },
+      prepareRoot: function(root, name, extendsName) {
+        var def = this.registerRoot(root, name, extendsName);
+        this.replaceTextInStyles(def.rootStyles, this.insertDirectives);
+        this.removeStyles(root, def.rootStyles);
+        if (this.strictStyling) {
+          this.applyScopeToContent(root, name);
+        }
+        return def.scopeStyles;
+      },
+      removeStyles: function(root, styles) {
+        for (var i = 0, l = styles.length, s; i < l && (s = styles[i]); i++) {
+          s.parentNode.removeChild(s);
+        }
+      },
+      registerRoot: function(root, name, extendsName) {
+        var def = this.registry[name] = {
+          root: root,
+          name: name,
+          extendsName: extendsName
+        };
+        var styles = this.findStyles(root);
+        def.rootStyles = styles;
+        def.scopeStyles = def.rootStyles;
+        var extendee = this.registry[def.extendsName];
+        if (extendee) {
+          def.scopeStyles = extendee.scopeStyles.concat(def.scopeStyles);
+        }
+        return def;
+      },
+      findStyles: function(root) {
+        if (!root) {
+          return [];
+        }
+        var styles = root.querySelectorAll("style");
+        return Array.prototype.filter.call(styles, function(s) {
+          return !s.hasAttribute(NO_SHIM_ATTRIBUTE);
+        });
+      },
+      applyScopeToContent: function(root, name) {
+        if (root) {
+          Array.prototype.forEach.call(root.querySelectorAll("*"), function(node) {
+            node.setAttribute(name, "");
+          });
+          Array.prototype.forEach.call(root.querySelectorAll("template"), function(template) {
+            this.applyScopeToContent(template.content, name);
+          }, this);
+        }
+      },
+      insertDirectives: function(cssText) {
+        cssText = this.insertPolyfillDirectivesInCssText(cssText);
+        return this.insertPolyfillRulesInCssText(cssText);
+      },
+      insertPolyfillDirectivesInCssText: function(cssText) {
+        cssText = cssText.replace(cssCommentNextSelectorRe, function(match, p1) {
+          return p1.slice(0, -2) + "{";
+        });
+        return cssText.replace(cssContentNextSelectorRe, function(match, p1) {
+          return p1 + " {";
+        });
+      },
+      insertPolyfillRulesInCssText: function(cssText) {
+        cssText = cssText.replace(cssCommentRuleRe, function(match, p1) {
+          return p1.slice(0, -1);
+        });
+        return cssText.replace(cssContentRuleRe, function(match, p1, p2, p3) {
+          var rule = match.replace(p1, "").replace(p2, "");
+          return p3 + rule;
+        });
+      },
+      scopeCssText: function(cssText, scopeSelector) {
+        var unscoped = this.extractUnscopedRulesFromCssText(cssText);
+        cssText = this.insertPolyfillHostInCssText(cssText);
+        cssText = this.convertColonHost(cssText);
+        cssText = this.convertColonHostContext(cssText);
+        cssText = this.convertShadowDOMSelectors(cssText);
+        if (scopeSelector) {
+          var self = this, cssText;
+          withCssRules(cssText, function(rules) {
+            cssText = self.scopeRules(rules, scopeSelector);
+          });
+        }
+        cssText = cssText + "\n" + unscoped;
+        return cssText.trim();
+      },
+      extractUnscopedRulesFromCssText: function(cssText) {
+        var r = "", m;
+        while (m = cssCommentUnscopedRuleRe.exec(cssText)) {
+          r += m[1].slice(0, -1) + "\n\n";
+        }
+        while (m = cssContentUnscopedRuleRe.exec(cssText)) {
+          r += m[0].replace(m[2], "").replace(m[1], m[3]) + "\n\n";
+        }
+        return r;
+      },
+      convertColonHost: function(cssText) {
+        return this.convertColonRule(cssText, cssColonHostRe, this.colonHostPartReplacer);
+      },
+      convertColonHostContext: function(cssText) {
+        return this.convertColonRule(cssText, cssColonHostContextRe, this.colonHostContextPartReplacer);
+      },
+      convertColonRule: function(cssText, regExp, partReplacer) {
+        return cssText.replace(regExp, function(m, p1, p2, p3) {
+          p1 = polyfillHostNoCombinator;
+          if (p2) {
+            var parts = p2.split(","), r = [];
+            for (var i = 0, l = parts.length, p; i < l && (p = parts[i]); i++) {
+              p = p.trim();
+              r.push(partReplacer(p1, p, p3));
+            }
+            return r.join(",");
+          } else {
+            return p1 + p3;
+          }
+        });
+      },
+      colonHostContextPartReplacer: function(host, part, suffix) {
+        if (part.match(polyfillHost)) {
+          return this.colonHostPartReplacer(host, part, suffix);
+        } else {
+          return host + part + suffix + ", " + part + " " + host + suffix;
+        }
+      },
+      colonHostPartReplacer: function(host, part, suffix) {
+        return host + part.replace(polyfillHost, "") + suffix;
+      },
+      convertShadowDOMSelectors: function(cssText) {
+        for (var i = 0; i < shadowDOMSelectorsRe.length; i++) {
+          cssText = cssText.replace(shadowDOMSelectorsRe[i], " ");
+        }
+        return cssText;
+      },
+      scopeRules: function(cssRules, scopeSelector) {
+        var cssText = "";
+        if (cssRules) {
+          Array.prototype.forEach.call(cssRules, function(rule) {
+            if (rule.selectorText && (rule.style && rule.style.cssText !== undefined)) {
+              cssText += this.scopeSelector(rule.selectorText, scopeSelector, this.strictStyling) + " {\n	";
+              cssText += this.propertiesFromRule(rule) + "\n}\n\n";
+            } else if (rule.type === CSSRule.MEDIA_RULE) {
+              cssText += "@media " + rule.media.mediaText + " {\n";
+              cssText += this.scopeRules(rule.cssRules, scopeSelector);
+              cssText += "\n}\n\n";
+            } else {
+              try {
+                if (rule.cssText) {
+                  cssText += rule.cssText + "\n\n";
+                }
+              } catch (x) {
+                if (rule.type === CSSRule.KEYFRAMES_RULE && rule.cssRules) {
+                  cssText += this.ieSafeCssTextFromKeyFrameRule(rule);
+                }
+              }
+            }
+          }, this);
+        }
+        return cssText;
+      },
+      ieSafeCssTextFromKeyFrameRule: function(rule) {
+        var cssText = "@keyframes " + rule.name + " {";
+        Array.prototype.forEach.call(rule.cssRules, function(rule) {
+          cssText += " " + rule.keyText + " {" + rule.style.cssText + "}";
+        });
+        cssText += " }";
+        return cssText;
+      },
+      scopeSelector: function(selector, scopeSelector, strict) {
+        var r = [], parts = selector.split(",");
+        parts.forEach(function(p) {
+          p = p.trim();
+          if (this.selectorNeedsScoping(p, scopeSelector)) {
+            p = strict && !p.match(polyfillHostNoCombinator) ? this.applyStrictSelectorScope(p, scopeSelector) : this.applySelectorScope(p, scopeSelector);
+          }
+          r.push(p);
+        }, this);
+        return r.join(", ");
+      },
+      selectorNeedsScoping: function(selector, scopeSelector) {
+        if (Array.isArray(scopeSelector)) {
+          return true;
+        }
+        var re = this.makeScopeMatcher(scopeSelector);
+        return !selector.match(re);
+      },
+      makeScopeMatcher: function(scopeSelector) {
+        scopeSelector = scopeSelector.replace(/\[/g, "\\[").replace(/\]/g, "\\]");
+        return new RegExp("^(" + scopeSelector + ")" + selectorReSuffix, "m");
+      },
+      applySelectorScope: function(selector, selectorScope) {
+        return Array.isArray(selectorScope) ? this.applySelectorScopeList(selector, selectorScope) : this.applySimpleSelectorScope(selector, selectorScope);
+      },
+      applySelectorScopeList: function(selector, scopeSelectorList) {
+        var r = [];
+        for (var i = 0, s; s = scopeSelectorList[i]; i++) {
+          r.push(this.applySimpleSelectorScope(selector, s));
+        }
+        return r.join(", ");
+      },
+      applySimpleSelectorScope: function(selector, scopeSelector) {
+        if (selector.match(polyfillHostRe)) {
+          selector = selector.replace(polyfillHostNoCombinator, scopeSelector);
+          return selector.replace(polyfillHostRe, scopeSelector + " ");
+        } else {
+          return scopeSelector + " " + selector;
+        }
+      },
+      applyStrictSelectorScope: function(selector, scopeSelector) {
+        scopeSelector = scopeSelector.replace(/\[is=([^\]]*)\]/g, "$1");
+        var splits = [ " ", ">", "+", "~" ], scoped = selector, attrName = "[" + scopeSelector + "]";
+        splits.forEach(function(sep) {
+          var parts = scoped.split(sep);
+          scoped = parts.map(function(p) {
+            var t = p.trim().replace(polyfillHostRe, "");
+            if (t && splits.indexOf(t) < 0 && t.indexOf(attrName) < 0) {
+              p = t.replace(/([^:]*)(:*)(.*)/, "$1" + attrName + "$2$3");
+            }
+            return p;
+          }).join(sep);
+        });
+        return scoped;
+      },
+      insertPolyfillHostInCssText: function(selector) {
+        return selector.replace(colonHostContextRe, polyfillHostContext).replace(colonHostRe, polyfillHost);
+      },
+      propertiesFromRule: function(rule) {
+        var cssText = rule.style.cssText;
+        if (rule.style.content && !rule.style.content.match(/['"]+|attr/)) {
+          cssText = cssText.replace(/content:[^;]*;/g, "content: '" + rule.style.content + "';");
+        }
+        var style = rule.style;
+        for (var i in style) {
+          if (style[i] === "initial") {
+            cssText += i + ": initial; ";
+          }
+        }
+        return cssText;
+      },
+      replaceTextInStyles: function(styles, action) {
+        if (styles && action) {
+          if (!(styles instanceof Array)) {
+            styles = [ styles ];
+          }
+          Array.prototype.forEach.call(styles, function(s) {
+            s.textContent = action.call(this, s.textContent);
+          }, this);
+        }
+      },
+      addCssToDocument: function(cssText, name) {
+        if (cssText.match("@import")) {
+          addOwnSheet(cssText, name);
+        } else {
+          addCssToDocument(cssText);
+        }
+      }
+    };
+    var selectorRe = /([^{]*)({[\s\S]*?})/gim, cssCommentRe = /\/\*[^*]*\*+([^/*][^*]*\*+)*\//gim, cssCommentNextSelectorRe = /\/\*\s*@polyfill ([^*]*\*+([^/*][^*]*\*+)*\/)([^{]*?){/gim, cssContentNextSelectorRe = /polyfill-next-selector[^}]*content\:[\s]*?['"](.*?)['"][;\s]*}([^{]*?){/gim, cssCommentRuleRe = /\/\*\s@polyfill-rule([^*]*\*+([^/*][^*]*\*+)*)\//gim, cssContentRuleRe = /(polyfill-rule)[^}]*(content\:[\s]*['"](.*?)['"])[;\s]*[^}]*}/gim, cssCommentUnscopedRuleRe = /\/\*\s@polyfill-unscoped-rule([^*]*\*+([^/*][^*]*\*+)*)\//gim, cssContentUnscopedRuleRe = /(polyfill-unscoped-rule)[^}]*(content\:[\s]*['"](.*?)['"])[;\s]*[^}]*}/gim, cssPseudoRe = /::(x-[^\s{,(]*)/gim, cssPartRe = /::part\(([^)]*)\)/gim, polyfillHost = "-shadowcsshost", polyfillHostContext = "-shadowcsscontext", parenSuffix = ")(?:\\((" + "(?:\\([^)(]*\\)|[^)(]*)+?" + ")\\))?([^,{]*)";
+    var cssColonHostRe = new RegExp("(" + polyfillHost + parenSuffix, "gim"), cssColonHostContextRe = new RegExp("(" + polyfillHostContext + parenSuffix, "gim"), selectorReSuffix = "([>\\s~+[.,{:][\\s\\S]*)?$", colonHostRe = /\:host/gim, colonHostContextRe = /\:host-context/gim, polyfillHostNoCombinator = polyfillHost + "-no-combinator", polyfillHostRe = new RegExp(polyfillHost, "gim"), polyfillHostContextRe = new RegExp(polyfillHostContext, "gim"), shadowDOMSelectorsRe = [ /\^\^/g, /\^/g, /\/shadow\//g, /\/shadow-deep\//g, /::shadow/g, /\/deep\//g, /::content/g ];
+    function stylesToCssText(styles, preserveComments) {
+      var cssText = "";
+      Array.prototype.forEach.call(styles, function(s) {
+        cssText += s.textContent + "\n\n";
+      });
+      if (!preserveComments) {
+        cssText = cssText.replace(cssCommentRe, "");
+      }
+      return cssText;
+    }
+    function cssTextToStyle(cssText) {
+      var style = document.createElement("style");
+      style.textContent = cssText;
+      return style;
+    }
+    function cssToRules(cssText) {
+      var style = cssTextToStyle(cssText);
+      document.head.appendChild(style);
+      var rules = [];
+      if (style.sheet) {
+        try {
+          rules = style.sheet.cssRules;
+        } catch (e) {}
+      } else {
+        console.warn("sheet not found", style);
+      }
+      style.parentNode.removeChild(style);
+      return rules;
+    }
+    var frame = document.createElement("iframe");
+    frame.style.display = "none";
+    function initFrame() {
+      frame.initialized = true;
+      document.body.appendChild(frame);
+      var doc = frame.contentDocument;
+      var base = doc.createElement("base");
+      base.href = document.baseURI;
+      doc.head.appendChild(base);
+    }
+    function inFrame(fn) {
+      if (!frame.initialized) {
+        initFrame();
+      }
+      document.body.appendChild(frame);
+      fn(frame.contentDocument);
+      document.body.removeChild(frame);
+    }
+    var isChrome = navigator.userAgent.match("Chrome");
+    function withCssRules(cssText, callback) {
+      if (!callback) {
+        return;
+      }
+      var rules;
+      if (cssText.match("@import") && isChrome) {
+        var style = cssTextToStyle(cssText);
+        inFrame(function(doc) {
+          doc.head.appendChild(style.impl);
+          rules = Array.prototype.slice.call(style.sheet.cssRules, 0);
+          callback(rules);
+        });
+      } else {
+        rules = cssToRules(cssText);
+        callback(rules);
+      }
+    }
+    function rulesToCss(cssRules) {
+      for (var i = 0, css = []; i < cssRules.length; i++) {
+        css.push(cssRules[i].cssText);
+      }
+      return css.join("\n\n");
+    }
+    function addCssToDocument(cssText) {
+      if (cssText) {
+        getSheet().appendChild(document.createTextNode(cssText));
+      }
+    }
+    function addOwnSheet(cssText, name) {
+      var style = cssTextToStyle(cssText);
+      style.setAttribute(name, "");
+      style.setAttribute(SHIMMED_ATTRIBUTE, "");
+      document.head.appendChild(style);
+    }
+    var SHIM_ATTRIBUTE = "shim-shadowdom";
+    var SHIMMED_ATTRIBUTE = "shim-shadowdom-css";
+    var NO_SHIM_ATTRIBUTE = "no-shim";
+    var sheet;
+    function getSheet() {
+      if (!sheet) {
+        sheet = document.createElement("style");
+        sheet.setAttribute(SHIMMED_ATTRIBUTE, "");
+        sheet[SHIMMED_ATTRIBUTE] = true;
+      }
+      return sheet;
+    }
+    if (window.ShadowDOMPolyfill) {
+      addCssToDocument("style { display: none !important; }\n");
+      var doc = ShadowDOMPolyfill.wrap(document);
+      var head = doc.querySelector("head");
+      head.insertBefore(getSheet(), head.childNodes[0]);
+      document.addEventListener("DOMContentLoaded", function() {
+        var urlResolver = scope.urlResolver;
+        if (window.HTMLImports && !HTMLImports.useNative) {
+          var SHIM_SHEET_SELECTOR = "link[rel=stylesheet]" + "[" + SHIM_ATTRIBUTE + "]";
+          var SHIM_STYLE_SELECTOR = "style[" + SHIM_ATTRIBUTE + "]";
+          HTMLImports.importer.documentPreloadSelectors += "," + SHIM_SHEET_SELECTOR;
+          HTMLImports.importer.importsPreloadSelectors += "," + SHIM_SHEET_SELECTOR;
+          HTMLImports.parser.documentSelectors = [ HTMLImports.parser.documentSelectors, SHIM_SHEET_SELECTOR, SHIM_STYLE_SELECTOR ].join(",");
+          var originalParseGeneric = HTMLImports.parser.parseGeneric;
+          HTMLImports.parser.parseGeneric = function(elt) {
+            if (elt[SHIMMED_ATTRIBUTE]) {
+              return;
+            }
+            var style = elt.__importElement || elt;
+            if (!style.hasAttribute(SHIM_ATTRIBUTE)) {
+              originalParseGeneric.call(this, elt);
+              return;
+            }
+            if (elt.__resource) {
+              style = elt.ownerDocument.createElement("style");
+              style.textContent = elt.__resource;
+            }
+            HTMLImports.path.resolveUrlsInStyle(style);
+            style.textContent = ShadowCSS.shimStyle(style);
+            style.removeAttribute(SHIM_ATTRIBUTE, "");
+            style.setAttribute(SHIMMED_ATTRIBUTE, "");
+            style[SHIMMED_ATTRIBUTE] = true;
+            if (style.parentNode !== head) {
+              if (elt.parentNode === head) {
+                head.replaceChild(style, elt);
+              } else {
+                this.addElementToDocument(style);
+              }
+            }
+            style.__importParsed = true;
+            this.markParsingComplete(elt);
+            this.parseNext();
+          };
+          var hasResource = HTMLImports.parser.hasResource;
+          HTMLImports.parser.hasResource = function(node) {
+            if (node.localName === "link" && node.rel === "stylesheet" && node.hasAttribute(SHIM_ATTRIBUTE)) {
+              return node.__resource;
+            } else {
+              return hasResource.call(this, node);
+            }
+          };
+        }
+      });
+    }
+    scope.ShadowCSS = ShadowCSS;
+  })(window.WebComponents);
+}
+
+(function(scope) {
+  if (window.ShadowDOMPolyfill) {
+    window.wrap = ShadowDOMPolyfill.wrapIfNeeded;
+    window.unwrap = ShadowDOMPolyfill.unwrapIfNeeded;
+  } else {
+    window.wrap = window.unwrap = function(n) {
+      return n;
+    };
+  }
+})(window.WebComponents);
+
+window.HTMLImports = window.HTMLImports || {
+  flags: {}
+};
+
+(function(scope) {
+  var IMPORT_LINK_TYPE = "import";
+  var useNative = Boolean(IMPORT_LINK_TYPE in document.createElement("link"));
+  var hasShadowDOMPolyfill = Boolean(window.ShadowDOMPolyfill);
+  var wrap = function(node) {
+    return hasShadowDOMPolyfill ? ShadowDOMPolyfill.wrapIfNeeded(node) : node;
+  };
+  var rootDocument = wrap(document);
+  var currentScriptDescriptor = {
+    get: function() {
+      var script = HTMLImports.currentScript || document.currentScript || (document.readyState !== "complete" ? document.scripts[document.scripts.length - 1] : null);
+      return wrap(script);
+    },
+    configurable: true
+  };
+  Object.defineProperty(document, "_currentScript", currentScriptDescriptor);
+  Object.defineProperty(rootDocument, "_currentScript", currentScriptDescriptor);
+  var isIE = /Trident|Edge/.test(navigator.userAgent);
+  function whenReady(callback, doc) {
+    doc = doc || rootDocument;
+    whenDocumentReady(function() {
+      watchImportsLoad(callback, doc);
+    }, doc);
+  }
+  var requiredReadyState = isIE ? "complete" : "interactive";
+  var READY_EVENT = "readystatechange";
+  function isDocumentReady(doc) {
+    return doc.readyState === "complete" || doc.readyState === requiredReadyState;
+  }
+  function whenDocumentReady(callback, doc) {
+    if (!isDocumentReady(doc)) {
+      var checkReady = function() {
+        if (doc.readyState === "complete" || doc.readyState === requiredReadyState) {
+          doc.removeEventListener(READY_EVENT, checkReady);
+          whenDocumentReady(callback, doc);
+        }
+      };
+      doc.addEventListener(READY_EVENT, checkReady);
+    } else if (callback) {
+      callback();
+    }
+  }
+  function markTargetLoaded(event) {
+    event.target.__loaded = true;
+  }
+  function watchImportsLoad(callback, doc) {
+    var imports = doc.querySelectorAll("link[rel=import]");
+    var loaded = 0, l = imports.length;
+    function checkDone(d) {
+      if (loaded == l && callback) {
+        callback();
+      }
+    }
+    function loadedImport(e) {
+      markTargetLoaded(e);
+      loaded++;
+      checkDone();
+    }
+    if (l) {
+      for (var i = 0, imp; i < l && (imp = imports[i]); i++) {
+        if (isImportLoaded(imp)) {
+          loadedImport.call(imp, {
+            target: imp
+          });
+        } else {
+          imp.addEventListener("load", loadedImport);
+          imp.addEventListener("error", loadedImport);
+        }
+      }
+    } else {
+      checkDone();
+    }
+  }
+  function isImportLoaded(link) {
+    return useNative ? link.__loaded || link.import && link.import.readyState !== "loading" : link.__importParsed;
+  }
+  if (useNative) {
+    new MutationObserver(function(mxns) {
+      for (var i = 0, l = mxns.length, m; i < l && (m = mxns[i]); i++) {
+        if (m.addedNodes) {
+          handleImports(m.addedNodes);
+        }
+      }
+    }).observe(document.head, {
+      childList: true
+    });
+    function handleImports(nodes) {
+      for (var i = 0, l = nodes.length, n; i < l && (n = nodes[i]); i++) {
+        if (isImport(n)) {
+          handleImport(n);
+        }
+      }
+    }
+    function isImport(element) {
+      return element.localName === "link" && element.rel === "import";
+    }
+    function handleImport(element) {
+      var loaded = element.import;
+      if (loaded) {
+        markTargetLoaded({
+          target: element
+        });
+      } else {
+        element.addEventListener("load", markTargetLoaded);
+        element.addEventListener("error", markTargetLoaded);
+      }
+    }
+    (function() {
+      if (document.readyState === "loading") {
+        var imports = document.querySelectorAll("link[rel=import]");
+        for (var i = 0, l = imports.length, imp; i < l && (imp = imports[i]); i++) {
+          handleImport(imp);
+        }
+      }
+    })();
+  }
+  whenReady(function() {
+    HTMLImports.ready = true;
+    HTMLImports.readyTime = new Date().getTime();
+    var evt = rootDocument.createEvent("CustomEvent");
+    evt.initCustomEvent("HTMLImportsLoaded", true, true, {});
+    rootDocument.dispatchEvent(evt);
+  });
+  scope.IMPORT_LINK_TYPE = IMPORT_LINK_TYPE;
+  scope.useNative = useNative;
+  scope.rootDocument = rootDocument;
+  scope.whenReady = whenReady;
+  scope.isIE = isIE;
+})(HTMLImports);
+
+(function(scope) {
+  var modules = [];
+  var addModule = function(module) {
+    modules.push(module);
+  };
+  var initializeModules = function() {
+    modules.forEach(function(module) {
+      module(scope);
+    });
+  };
+  scope.addModule = addModule;
+  scope.initializeModules = initializeModules;
+})(HTMLImports);
+
+HTMLImports.addModule(function(scope) {
+  var CSS_URL_REGEXP = /(url\()([^)]*)(\))/g;
+  var CSS_IMPORT_REGEXP = /(@import[\s]+(?!url\())([^;]*)(;)/g;
+  var path = {
+    resolveUrlsInStyle: function(style) {
+      var doc = style.ownerDocument;
+      var resolver = doc.createElement("a");
+      style.textContent = this.resolveUrlsInCssText(style.textContent, resolver);
+      return style;
+    },
+    resolveUrlsInCssText: function(cssText, urlObj) {
+      var r = this.replaceUrls(cssText, urlObj, CSS_URL_REGEXP);
+      r = this.replaceUrls(r, urlObj, CSS_IMPORT_REGEXP);
+      return r;
+    },
+    replaceUrls: function(text, urlObj, regexp) {
+      return text.replace(regexp, function(m, pre, url, post) {
+        var urlPath = url.replace(/["']/g, "");
+        urlObj.href = urlPath;
+        urlPath = urlObj.href;
+        return pre + "'" + urlPath + "'" + post;
+      });
+    }
+  };
+  scope.path = path;
+});
+
+HTMLImports.addModule(function(scope) {
+  var xhr = {
+    async: true,
+    ok: function(request) {
+      return request.status >= 200 && request.status < 300 || request.status === 304 || request.status === 0;
+    },
+    load: function(url, next, nextContext) {
+      var request = new XMLHttpRequest();
+      if (scope.flags.debug || scope.flags.bust) {
+        url += "?" + Math.random();
+      }
+      request.open("GET", url, xhr.async);
+      request.addEventListener("readystatechange", function(e) {
+        if (request.readyState === 4) {
+          var locationHeader = request.getResponseHeader("Location");
+          var redirectedUrl = null;
+          if (locationHeader) {
+            var redirectedUrl = locationHeader.substr(0, 1) === "/" ? location.origin + locationHeader : locationHeader;
+          }
+          next.call(nextContext, !xhr.ok(request) && request, request.response || request.responseText, redirectedUrl);
+        }
+      });
+      request.send();
+      return request;
+    },
+    loadDocument: function(url, next, nextContext) {
+      this.load(url, next, nextContext).responseType = "document";
+    }
+  };
+  scope.xhr = xhr;
+});
+
+HTMLImports.addModule(function(scope) {
+  var xhr = scope.xhr;
+  var flags = scope.flags;
+  var Loader = function(onLoad, onComplete) {
+    this.cache = {};
+    this.onload = onLoad;
+    this.oncomplete = onComplete;
+    this.inflight = 0;
+    this.pending = {};
+  };
+  Loader.prototype = {
+    addNodes: function(nodes) {
+      this.inflight += nodes.length;
+      for (var i = 0, l = nodes.length, n; i < l && (n = nodes[i]); i++) {
+        this.require(n);
+      }
+      this.checkDone();
+    },
+    addNode: function(node) {
+      this.inflight++;
+      this.require(node);
+      this.checkDone();
+    },
+    require: function(elt) {
+      var url = elt.src || elt.href;
+      elt.__nodeUrl = url;
+      if (!this.dedupe(url, elt)) {
+        this.fetch(url, elt);
+      }
+    },
+    dedupe: function(url, elt) {
+      if (this.pending[url]) {
+        this.pending[url].push(elt);
+        return true;
+      }
+      var resource;
+      if (this.cache[url]) {
+        this.onload(url, elt, this.cache[url]);
+        this.tail();
+        return true;
+      }
+      this.pending[url] = [ elt ];
+      return false;
+    },
+    fetch: function(url, elt) {
+      flags.load && console.log("fetch", url, elt);
+      if (!url) {
+        setTimeout(function() {
+          this.receive(url, elt, {
+            error: "href must be specified"
+          }, null);
+        }.bind(this), 0);
+      } else if (url.match(/^data:/)) {
+        var pieces = url.split(",");
+        var header = pieces[0];
+        var body = pieces[1];
+        if (header.indexOf(";base64") > -1) {
+          body = atob(body);
+        } else {
+          body = decodeURIComponent(body);
+        }
+        setTimeout(function() {
+          this.receive(url, elt, null, body);
+        }.bind(this), 0);
+      } else {
+        var receiveXhr = function(err, resource, redirectedUrl) {
+          this.receive(url, elt, err, resource, redirectedUrl);
+        }.bind(this);
+        xhr.load(url, receiveXhr);
+      }
+    },
+    receive: function(url, elt, err, resource, redirectedUrl) {
+      this.cache[url] = resource;
+      var $p = this.pending[url];
+      for (var i = 0, l = $p.length, p; i < l && (p = $p[i]); i++) {
+        this.onload(url, p, resource, err, redirectedUrl);
+        this.tail();
+      }
+      this.pending[url] = null;
+    },
+    tail: function() {
+      --this.inflight;
+      this.checkDone();
+    },
+    checkDone: function() {
+      if (!this.inflight) {
+        this.oncomplete();
+      }
+    }
+  };
+  scope.Loader = Loader;
+});
+
+HTMLImports.addModule(function(scope) {
+  var Observer = function(addCallback) {
+    this.addCallback = addCallback;
+    this.mo = new MutationObserver(this.handler.bind(this));
+  };
+  Observer.prototype = {
+    handler: function(mutations) {
+      for (var i = 0, l = mutations.length, m; i < l && (m = mutations[i]); i++) {
+        if (m.type === "childList" && m.addedNodes.length) {
+          this.addedNodes(m.addedNodes);
+        }
+      }
+    },
+    addedNodes: function(nodes) {
+      if (this.addCallback) {
+        this.addCallback(nodes);
+      }
+      for (var i = 0, l = nodes.length, n, loading; i < l && (n = nodes[i]); i++) {
+        if (n.children && n.children.length) {
+          this.addedNodes(n.children);
+        }
+      }
+    },
+    observe: function(root) {
+      this.mo.observe(root, {
+        childList: true,
+        subtree: true
+      });
+    }
+  };
+  scope.Observer = Observer;
+});
+
+HTMLImports.addModule(function(scope) {
+  var path = scope.path;
+  var rootDocument = scope.rootDocument;
+  var flags = scope.flags;
+  var isIE = scope.isIE;
+  var IMPORT_LINK_TYPE = scope.IMPORT_LINK_TYPE;
+  var IMPORT_SELECTOR = "link[rel=" + IMPORT_LINK_TYPE + "]";
+  var importParser = {
+    documentSelectors: IMPORT_SELECTOR,
+    importsSelectors: [ IMPORT_SELECTOR, "link[rel=stylesheet]", "style", "script:not([type])", 'script[type="text/javascript"]' ].join(","),
+    map: {
+      link: "parseLink",
+      script: "parseScript",
+      style: "parseStyle"
+    },
+    dynamicElements: [],
+    parseNext: function() {
+      var next = this.nextToParse();
+      if (next) {
+        this.parse(next);
+      }
+    },
+    parse: function(elt) {
+      if (this.isParsed(elt)) {
+        flags.parse && console.log("[%s] is already parsed", elt.localName);
+        return;
+      }
+      var fn = this[this.map[elt.localName]];
+      if (fn) {
+        this.markParsing(elt);
+        fn.call(this, elt);
+      }
+    },
+    parseDynamic: function(elt, quiet) {
+      this.dynamicElements.push(elt);
+      if (!quiet) {
+        this.parseNext();
+      }
+    },
+    markParsing: function(elt) {
+      flags.parse && console.log("parsing", elt);
+      this.parsingElement = elt;
+    },
+    markParsingComplete: function(elt) {
+      elt.__importParsed = true;
+      this.markDynamicParsingComplete(elt);
+      if (elt.__importElement) {
+        elt.__importElement.__importParsed = true;
+        this.markDynamicParsingComplete(elt.__importElement);
+      }
+      this.parsingElement = null;
+      flags.parse && console.log("completed", elt);
+    },
+    markDynamicParsingComplete: function(elt) {
+      var i = this.dynamicElements.indexOf(elt);
+      if (i >= 0) {
+        this.dynamicElements.splice(i, 1);
+      }
+    },
+    parseImport: function(elt) {
+      if (HTMLImports.__importsParsingHook) {
+        HTMLImports.__importsParsingHook(elt);
+      }
+      if (elt.import) {
+        elt.import.__importParsed = true;
+      }
+      this.markParsingComplete(elt);
+      if (elt.__resource && !elt.__error) {
+        elt.dispatchEvent(new CustomEvent("load", {
+          bubbles: false
+        }));
+      } else {
+        elt.dispatchEvent(new CustomEvent("error", {
+          bubbles: false
+        }));
+      }
+      if (elt.__pending) {
+        var fn;
+        while (elt.__pending.length) {
+          fn = elt.__pending.shift();
+          if (fn) {
+            fn({
+              target: elt
+            });
+          }
+        }
+      }
+      this.parseNext();
+    },
+    parseLink: function(linkElt) {
+      if (nodeIsImport(linkElt)) {
+        this.parseImport(linkElt);
+      } else {
+        linkElt.href = linkElt.href;
+        this.parseGeneric(linkElt);
+      }
+    },
+    parseStyle: function(elt) {
+      var src = elt;
+      elt = cloneStyle(elt);
+      elt.__importElement = src;
+      this.parseGeneric(elt);
+    },
+    parseGeneric: function(elt) {
+      this.trackElement(elt);
+      this.addElementToDocument(elt);
+    },
+    rootImportForElement: function(elt) {
+      var n = elt;
+      while (n.ownerDocument.__importLink) {
+        n = n.ownerDocument.__importLink;
+      }
+      return n;
+    },
+    addElementToDocument: function(elt) {
+      var port = this.rootImportForElement(elt.__importElement || elt);
+      port.parentNode.insertBefore(elt, port);
+    },
+    trackElement: function(elt, callback) {
+      var self = this;
+      var done = function(e) {
+        if (callback) {
+          callback(e);
+        }
+        self.markParsingComplete(elt);
+        self.parseNext();
+      };
+      elt.addEventListener("load", done);
+      elt.addEventListener("error", done);
+      if (isIE && elt.localName === "style") {
+        var fakeLoad = false;
+        if (elt.textContent.indexOf("@import") == -1) {
+          fakeLoad = true;
+        } else if (elt.sheet) {
+          fakeLoad = true;
+          var csr = elt.sheet.cssRules;
+          var len = csr ? csr.length : 0;
+          for (var i = 0, r; i < len && (r = csr[i]); i++) {
+            if (r.type === CSSRule.IMPORT_RULE) {
+              fakeLoad = fakeLoad && Boolean(r.styleSheet);
+            }
+          }
+        }
+        if (fakeLoad) {
+          elt.dispatchEvent(new CustomEvent("load", {
+            bubbles: false
+          }));
+        }
+      }
+    },
+    parseScript: function(scriptElt) {
+      var script = document.createElement("script");
+      script.__importElement = scriptElt;
+      script.src = scriptElt.src ? scriptElt.src : generateScriptDataUrl(scriptElt);
+      scope.currentScript = scriptElt;
+      this.trackElement(script, function(e) {
+        script.parentNode.removeChild(script);
+        scope.currentScript = null;
+      });
+      this.addElementToDocument(script);
+    },
+    nextToParse: function() {
+      this._mayParse = [];
+      return !this.parsingElement && (this.nextToParseInDoc(rootDocument) || this.nextToParseDynamic());
+    },
+    nextToParseInDoc: function(doc, link) {
+      if (doc && this._mayParse.indexOf(doc) < 0) {
+        this._mayParse.push(doc);
+        var nodes = doc.querySelectorAll(this.parseSelectorsForNode(doc));
+        for (var i = 0, l = nodes.length, p = 0, n; i < l && (n = nodes[i]); i++) {
+          if (!this.isParsed(n)) {
+            if (this.hasResource(n)) {
+              return nodeIsImport(n) ? this.nextToParseInDoc(n.import, n) : n;
+            } else {
+              return;
+            }
+          }
+        }
+      }
+      return link;
+    },
+    nextToParseDynamic: function() {
+      return this.dynamicElements[0];
+    },
+    parseSelectorsForNode: function(node) {
+      var doc = node.ownerDocument || node;
+      return doc === rootDocument ? this.documentSelectors : this.importsSelectors;
+    },
+    isParsed: function(node) {
+      return node.__importParsed;
+    },
+    needsDynamicParsing: function(elt) {
+      return this.dynamicElements.indexOf(elt) >= 0;
+    },
+    hasResource: function(node) {
+      if (nodeIsImport(node) && node.import === undefined) {
+        return false;
+      }
+      return true;
+    }
+  };
+  function nodeIsImport(elt) {
+    return elt.localName === "link" && elt.rel === IMPORT_LINK_TYPE;
+  }
+  function generateScriptDataUrl(script) {
+    var scriptContent = generateScriptContent(script);
+    return "data:text/javascript;charset=utf-8," + encodeURIComponent(scriptContent);
+  }
+  function generateScriptContent(script) {
+    return script.textContent + generateSourceMapHint(script);
+  }
+  function generateSourceMapHint(script) {
+    var owner = script.ownerDocument;
+    owner.__importedScripts = owner.__importedScripts || 0;
+    var moniker = script.ownerDocument.baseURI;
+    var num = owner.__importedScripts ? "-" + owner.__importedScripts : "";
+    owner.__importedScripts++;
+    return "\n//# sourceURL=" + moniker + num + ".js\n";
+  }
+  function cloneStyle(style) {
+    var clone = style.ownerDocument.createElement("style");
+    clone.textContent = style.textContent;
+    path.resolveUrlsInStyle(clone);
+    return clone;
+  }
+  scope.parser = importParser;
+  scope.IMPORT_SELECTOR = IMPORT_SELECTOR;
+});
+
+HTMLImports.addModule(function(scope) {
+  var flags = scope.flags;
+  var IMPORT_LINK_TYPE = scope.IMPORT_LINK_TYPE;
+  var IMPORT_SELECTOR = scope.IMPORT_SELECTOR;
+  var rootDocument = scope.rootDocument;
+  var Loader = scope.Loader;
+  var Observer = scope.Observer;
+  var parser = scope.parser;
+  var importer = {
+    documents: {},
+    documentPreloadSelectors: IMPORT_SELECTOR,
+    importsPreloadSelectors: [ IMPORT_SELECTOR ].join(","),
+    loadNode: function(node) {
+      importLoader.addNode(node);
+    },
+    loadSubtree: function(parent) {
+      var nodes = this.marshalNodes(parent);
+      importLoader.addNodes(nodes);
+    },
+    marshalNodes: function(parent) {
+      return parent.querySelectorAll(this.loadSelectorsForNode(parent));
+    },
+    loadSelectorsForNode: function(node) {
+      var doc = node.ownerDocument || node;
+      return doc === rootDocument ? this.documentPreloadSelectors : this.importsPreloadSelectors;
+    },
+    loaded: function(url, elt, resource, err, redirectedUrl) {
+      flags.load && console.log("loaded", url, elt);
+      elt.__resource = resource;
+      elt.__error = err;
+      if (isImportLink(elt)) {
+        var doc = this.documents[url];
+        if (doc === undefined) {
+          doc = err ? null : makeDocument(resource, redirectedUrl || url);
+          if (doc) {
+            doc.__importLink = elt;
+            this.bootDocument(doc);
+          }
+          this.documents[url] = doc;
+        }
+        elt.import = doc;
+      }
+      parser.parseNext();
+    },
+    bootDocument: function(doc) {
+      this.loadSubtree(doc);
+      this.observer.observe(doc);
+      parser.parseNext();
+    },
+    loadedAll: function() {
+      parser.parseNext();
+    }
+  };
+  var importLoader = new Loader(importer.loaded.bind(importer), importer.loadedAll.bind(importer));
+  importer.observer = new Observer();
+  function isImportLink(elt) {
+    return isLinkRel(elt, IMPORT_LINK_TYPE);
+  }
+  function isLinkRel(elt, rel) {
+    return elt.localName === "link" && elt.getAttribute("rel") === rel;
+  }
+  function hasBaseURIAccessor(doc) {
+    return !!Object.getOwnPropertyDescriptor(doc, "baseURI");
+  }
+  function makeDocument(resource, url) {
+    var doc = document.implementation.createHTMLDocument(IMPORT_LINK_TYPE);
+    doc._URL = url;
+    var base = doc.createElement("base");
+    base.setAttribute("href", url);
+    if (!doc.baseURI && !hasBaseURIAccessor(doc)) {
+      Object.defineProperty(doc, "baseURI", {
+        value: url
+      });
+    }
+    var meta = doc.createElement("meta");
+    meta.setAttribute("charset", "utf-8");
+    doc.head.appendChild(meta);
+    doc.head.appendChild(base);
+    doc.body.innerHTML = resource;
+    if (window.HTMLTemplateElement && HTMLTemplateElement.bootstrap) {
+      HTMLTemplateElement.bootstrap(doc);
+    }
+    return doc;
+  }
+  if (!document.baseURI) {
+    var baseURIDescriptor = {
+      get: function() {
+        var base = document.querySelector("base");
+        return base ? base.href : window.location.href;
+      },
+      configurable: true
+    };
+    Object.defineProperty(document, "baseURI", baseURIDescriptor);
+    Object.defineProperty(rootDocument, "baseURI", baseURIDescriptor);
+  }
+  scope.importer = importer;
+  scope.importLoader = importLoader;
+});
+
+HTMLImports.addModule(function(scope) {
+  var parser = scope.parser;
+  var importer = scope.importer;
+  var dynamic = {
+    added: function(nodes) {
+      var owner, parsed, loading;
+      for (var i = 0, l = nodes.length, n; i < l && (n = nodes[i]); i++) {
+        if (!owner) {
+          owner = n.ownerDocument;
+          parsed = parser.isParsed(owner);
+        }
+        loading = this.shouldLoadNode(n);
+        if (loading) {
+          importer.loadNode(n);
+        }
+        if (this.shouldParseNode(n) && parsed) {
+          parser.parseDynamic(n, loading);
+        }
+      }
+    },
+    shouldLoadNode: function(node) {
+      return node.nodeType === 1 && matches.call(node, importer.loadSelectorsForNode(node));
+    },
+    shouldParseNode: function(node) {
+      return node.nodeType === 1 && matches.call(node, parser.parseSelectorsForNode(node));
+    }
+  };
+  importer.observer.addCallback = dynamic.added.bind(dynamic);
+  var matches = HTMLElement.prototype.matches || HTMLElement.prototype.matchesSelector || HTMLElement.prototype.webkitMatchesSelector || HTMLElement.prototype.mozMatchesSelector || HTMLElement.prototype.msMatchesSelector;
+});
+
+(function(scope) {
+  var initializeModules = scope.initializeModules;
+  var isIE = scope.isIE;
+  if (scope.useNative) {
+    return;
+  }
+  if (isIE && typeof window.CustomEvent !== "function") {
+    window.CustomEvent = function(inType, params) {
+      params = params || {};
+      var e = document.createEvent("CustomEvent");
+      e.initCustomEvent(inType, Boolean(params.bubbles), Boolean(params.cancelable), params.detail);
+      return e;
+    };
+    window.CustomEvent.prototype = window.Event.prototype;
+  }
+  initializeModules();
+  var rootDocument = scope.rootDocument;
+  function bootstrap() {
+    HTMLImports.importer.bootDocument(rootDocument);
+  }
+  if (document.readyState === "complete" || document.readyState === "interactive" && !window.attachEvent) {
+    bootstrap();
+  } else {
+    document.addEventListener("DOMContentLoaded", bootstrap);
+  }
+})(HTMLImports);
+
+window.CustomElements = window.CustomElements || {
+  flags: {}
+};
+
+(function(scope) {
+  var flags = scope.flags;
+  var modules = [];
+  var addModule = function(module) {
+    modules.push(module);
+  };
+  var initializeModules = function() {
+    modules.forEach(function(module) {
+      module(scope);
+    });
+  };
+  scope.addModule = addModule;
+  scope.initializeModules = initializeModules;
+  scope.hasNative = Boolean(document.registerElement);
+  scope.useNative = !flags.register && scope.hasNative && !window.ShadowDOMPolyfill && (!window.HTMLImports || HTMLImports.useNative);
+})(CustomElements);
+
+CustomElements.addModule(function(scope) {
+  var IMPORT_LINK_TYPE = window.HTMLImports ? HTMLImports.IMPORT_LINK_TYPE : "none";
+  function forSubtree(node, cb) {
+    findAllElements(node, function(e) {
+      if (cb(e)) {
+        return true;
+      }
+      forRoots(e, cb);
+    });
+    forRoots(node, cb);
+  }
+  function findAllElements(node, find, data) {
+    var e = node.firstElementChild;
+    if (!e) {
+      e = node.firstChild;
+      while (e && e.nodeType !== Node.ELEMENT_NODE) {
+        e = e.nextSibling;
+      }
+    }
+    while (e) {
+      if (find(e, data) !== true) {
+        findAllElements(e, find, data);
+      }
+      e = e.nextElementSibling;
+    }
+    return null;
+  }
+  function forRoots(node, cb) {
+    var root = node.shadowRoot;
+    while (root) {
+      forSubtree(root, cb);
+      root = root.olderShadowRoot;
+    }
+  }
+  var processingDocuments;
+  function forDocumentTree(doc, cb) {
+    processingDocuments = [];
+    _forDocumentTree(doc, cb);
+    processingDocuments = null;
+  }
+  function _forDocumentTree(doc, cb) {
+    doc = wrap(doc);
+    if (processingDocuments.indexOf(doc) >= 0) {
+      return;
+    }
+    processingDocuments.push(doc);
+    var imports = doc.querySelectorAll("link[rel=" + IMPORT_LINK_TYPE + "]");
+    for (var i = 0, l = imports.length, n; i < l && (n = imports[i]); i++) {
+      if (n.import) {
+        _forDocumentTree(n.import, cb);
+      }
+    }
+    cb(doc);
+  }
+  scope.forDocumentTree = forDocumentTree;
+  scope.forSubtree = forSubtree;
+});
+
+CustomElements.addModule(function(scope) {
+  var flags = scope.flags;
+  var forSubtree = scope.forSubtree;
+  var forDocumentTree = scope.forDocumentTree;
+  function addedNode(node) {
+    return added(node) || addedSubtree(node);
+  }
+  function added(node) {
+    if (scope.upgrade(node)) {
+      return true;
+    }
+    attached(node);
+  }
+  function addedSubtree(node) {
+    forSubtree(node, function(e) {
+      if (added(e)) {
+        return true;
+      }
+    });
+  }
+  function attachedNode(node) {
+    attached(node);
+    if (inDocument(node)) {
+      forSubtree(node, function(e) {
+        attached(e);
+      });
+    }
+  }
+  var hasPolyfillMutations = !window.MutationObserver || window.MutationObserver === window.JsMutationObserver;
+  scope.hasPolyfillMutations = hasPolyfillMutations;
+  var isPendingMutations = false;
+  var pendingMutations = [];
+  function deferMutation(fn) {
+    pendingMutations.push(fn);
+    if (!isPendingMutations) {
+      isPendingMutations = true;
+      setTimeout(takeMutations);
+    }
+  }
+  function takeMutations() {
+    isPendingMutations = false;
+    var $p = pendingMutations;
+    for (var i = 0, l = $p.length, p; i < l && (p = $p[i]); i++) {
+      p();
+    }
+    pendingMutations = [];
+  }
+  function attached(element) {
+    if (hasPolyfillMutations) {
+      deferMutation(function() {
+        _attached(element);
+      });
+    } else {
+      _attached(element);
+    }
+  }
+  function _attached(element) {
+    if (element.__upgraded__ && (element.attachedCallback || element.detachedCallback)) {
+      if (!element.__attached && inDocument(element)) {
+        element.__attached = true;
+        if (element.attachedCallback) {
+          element.attachedCallback();
+        }
+      }
+    }
+  }
+  function detachedNode(node) {
+    detached(node);
+    forSubtree(node, function(e) {
+      detached(e);
+    });
+  }
+  function detached(element) {
+    if (hasPolyfillMutations) {
+      deferMutation(function() {
+        _detached(element);
+      });
+    } else {
+      _detached(element);
+    }
+  }
+  function _detached(element) {
+    if (element.__upgraded__ && (element.attachedCallback || element.detachedCallback)) {
+      if (element.__attached && !inDocument(element)) {
+        element.__attached = false;
+        if (element.detachedCallback) {
+          element.detachedCallback();
+        }
+      }
+    }
+  }
+  function inDocument(element) {
+    var p = element;
+    var doc = wrap(document);
+    while (p) {
+      if (p == doc) {
+        return true;
+      }
+      p = p.parentNode || p.host;
+    }
+  }
+  function watchShadow(node) {
+    if (node.shadowRoot && !node.shadowRoot.__watched) {
+      flags.dom && console.log("watching shadow-root for: ", node.localName);
+      var root = node.shadowRoot;
+      while (root) {
+        observe(root);
+        root = root.olderShadowRoot;
+      }
+    }
+  }
+  function handler(mutations) {
+    if (flags.dom) {
+      var mx = mutations[0];
+      if (mx && mx.type === "childList" && mx.addedNodes) {
+        if (mx.addedNodes) {
+          var d = mx.addedNodes[0];
+          while (d && d !== document && !d.host) {
+            d = d.parentNode;
+          }
+          var u = d && (d.URL || d._URL || d.host && d.host.localName) || "";
+          u = u.split("/?").shift().split("/").pop();
+        }
+      }
+      console.group("mutations (%d) [%s]", mutations.length, u || "");
+    }
+    mutations.forEach(function(mx) {
+      if (mx.type === "childList") {
+        forEach(mx.addedNodes, function(n) {
+          if (!n.localName) {
+            return;
+          }
+          addedNode(n);
+        });
+        forEach(mx.removedNodes, function(n) {
+          if (!n.localName) {
+            return;
+          }
+          detachedNode(n);
+        });
+      }
+    });
+    flags.dom && console.groupEnd();
+  }
+  function takeRecords(node) {
+    node = wrap(node);
+    if (!node) {
+      node = wrap(document);
+    }
+    while (node.parentNode) {
+      node = node.parentNode;
+    }
+    var observer = node.__observer;
+    if (observer) {
+      handler(observer.takeRecords());
+      takeMutations();
+    }
+  }
+  var forEach = Array.prototype.forEach.call.bind(Array.prototype.forEach);
+  function observe(inRoot) {
+    if (inRoot.__observer) {
+      return;
+    }
+    var observer = new MutationObserver(handler);
+    observer.observe(inRoot, {
+      childList: true,
+      subtree: true
+    });
+    inRoot.__observer = observer;
+  }
+  function upgradeDocument(doc) {
+    doc = wrap(doc);
+    flags.dom && console.group("upgradeDocument: ", doc.baseURI.split("/").pop());
+    addedNode(doc);
+    observe(doc);
+    flags.dom && console.groupEnd();
+  }
+  function upgradeDocumentTree(doc) {
+    forDocumentTree(doc, upgradeDocument);
+  }
+  var originalCreateShadowRoot = Element.prototype.createShadowRoot;
+  if (originalCreateShadowRoot) {
+    Element.prototype.createShadowRoot = function() {
+      var root = originalCreateShadowRoot.call(this);
+      CustomElements.watchShadow(this);
+      return root;
+    };
+  }
+  scope.watchShadow = watchShadow;
+  scope.upgradeDocumentTree = upgradeDocumentTree;
+  scope.upgradeSubtree = addedSubtree;
+  scope.upgradeAll = addedNode;
+  scope.attachedNode = attachedNode;
+  scope.takeRecords = takeRecords;
+});
+
+CustomElements.addModule(function(scope) {
+  var flags = scope.flags;
+  function upgrade(node) {
+    if (!node.__upgraded__ && node.nodeType === Node.ELEMENT_NODE) {
+      var is = node.getAttribute("is");
+      var definition = scope.getRegisteredDefinition(is || node.localName);
+      if (definition) {
+        if (is && definition.tag == node.localName) {
+          return upgradeWithDefinition(node, definition);
+        } else if (!is && !definition.extends) {
+          return upgradeWithDefinition(node, definition);
+        }
+      }
+    }
+  }
+  function upgradeWithDefinition(element, definition) {
+    flags.upgrade && console.group("upgrade:", element.localName);
+    if (definition.is) {
+      element.setAttribute("is", definition.is);
+    }
+    implementPrototype(element, definition);
+    element.__upgraded__ = true;
+    created(element);
+    scope.attachedNode(element);
+    scope.upgradeSubtree(element);
+    flags.upgrade && console.groupEnd();
+    return element;
+  }
+  function implementPrototype(element, definition) {
+    if (Object.__proto__) {
+      element.__proto__ = definition.prototype;
+    } else {
+      customMixin(element, definition.prototype, definition.native);
+      element.__proto__ = definition.prototype;
+    }
+  }
+  function customMixin(inTarget, inSrc, inNative) {
+    var used = {};
+    var p = inSrc;
+    while (p !== inNative && p !== HTMLElement.prototype) {
+      var keys = Object.getOwnPropertyNames(p);
+      for (var i = 0, k; k = keys[i]; i++) {
+        if (!used[k]) {
+          Object.defineProperty(inTarget, k, Object.getOwnPropertyDescriptor(p, k));
+          used[k] = 1;
+        }
+      }
+      p = Object.getPrototypeOf(p);
+    }
+  }
+  function created(element) {
+    if (element.createdCallback) {
+      element.createdCallback();
+    }
+  }
+  scope.upgrade = upgrade;
+  scope.upgradeWithDefinition = upgradeWithDefinition;
+  scope.implementPrototype = implementPrototype;
+});
+
+CustomElements.addModule(function(scope) {
+  var upgradeDocumentTree = scope.upgradeDocumentTree;
+  var upgrade = scope.upgrade;
+  var upgradeWithDefinition = scope.upgradeWithDefinition;
+  var implementPrototype = scope.implementPrototype;
+  var useNative = scope.useNative;
+  function register(name, options) {
+    var definition = options || {};
+    if (!name) {
+      throw new Error("document.registerElement: first argument `name` must not be empty");
+    }
+    if (name.indexOf("-") < 0) {
+      throw new Error("document.registerElement: first argument ('name') must contain a dash ('-'). Argument provided was '" + String(name) + "'.");
+    }
+    if (isReservedTag(name)) {
+      throw new Error("Failed to execute 'registerElement' on 'Document': Registration failed for type '" + String(name) + "'. The type name is invalid.");
+    }
+    if (getRegisteredDefinition(name)) {
+      throw new Error("DuplicateDefinitionError: a type with name '" + String(name) + "' is already registered");
+    }
+    if (!definition.prototype) {
+      definition.prototype = Object.create(HTMLElement.prototype);
+    }
+    definition.__name = name.toLowerCase();
+    definition.lifecycle = definition.lifecycle || {};
+    definition.ancestry = ancestry(definition.extends);
+    resolveTagName(definition);
+    resolvePrototypeChain(definition);
+    overrideAttributeApi(definition.prototype);
+    registerDefinition(definition.__name, definition);
+    definition.ctor = generateConstructor(definition);
+    definition.ctor.prototype = definition.prototype;
+    definition.prototype.constructor = definition.ctor;
+    if (scope.ready) {
+      upgradeDocumentTree(document);
+    }
+    return definition.ctor;
+  }
+  function overrideAttributeApi(prototype) {
+    if (prototype.setAttribute._polyfilled) {
+      return;
+    }
+    var setAttribute = prototype.setAttribute;
+    prototype.setAttribute = function(name, value) {
+      changeAttribute.call(this, name, value, setAttribute);
+    };
+    var removeAttribute = prototype.removeAttribute;
+    prototype.removeAttribute = function(name) {
+      changeAttribute.call(this, name, null, removeAttribute);
+    };
+    prototype.setAttribute._polyfilled = true;
+  }
+  function changeAttribute(name, value, operation) {
+    name = name.toLowerCase();
+    var oldValue = this.getAttribute(name);
+    operation.apply(this, arguments);
+    var newValue = this.getAttribute(name);
+    if (this.attributeChangedCallback && newValue !== oldValue) {
+      this.attributeChangedCallback(name, oldValue, newValue);
+    }
+  }
+  function isReservedTag(name) {
+    for (var i = 0; i < reservedTagList.length; i++) {
+      if (name === reservedTagList[i]) {
+        return true;
+      }
+    }
+  }
+  var reservedTagList = [ "annotation-xml", "color-profile", "font-face", "font-face-src", "font-face-uri", "font-face-format", "font-face-name", "missing-glyph" ];
+  function ancestry(extnds) {
+    var extendee = getRegisteredDefinition(extnds);
+    if (extendee) {
+      return ancestry(extendee.extends).concat([ extendee ]);
+    }
+    return [];
+  }
+  function resolveTagName(definition) {
+    var baseTag = definition.extends;
+    for (var i = 0, a; a = definition.ancestry[i]; i++) {
+      baseTag = a.is && a.tag;
+    }
+    definition.tag = baseTag || definition.__name;
+    if (baseTag) {
+      definition.is = definition.__name;
+    }
+  }
+  function resolvePrototypeChain(definition) {
+    if (!Object.__proto__) {
+      var nativePrototype = HTMLElement.prototype;
+      if (definition.is) {
+        var inst = document.createElement(definition.tag);
+        var expectedPrototype = Object.getPrototypeOf(inst);
+        if (expectedPrototype === definition.prototype) {
+          nativePrototype = expectedPrototype;
+        }
+      }
+      var proto = definition.prototype, ancestor;
+      while (proto && proto !== nativePrototype) {
+        ancestor = Object.getPrototypeOf(proto);
+        proto.__proto__ = ancestor;
+        proto = ancestor;
+      }
+      definition.native = nativePrototype;
+    }
+  }
+  function instantiate(definition) {
+    return upgradeWithDefinition(domCreateElement(definition.tag), definition);
+  }
+  var registry = {};
+  function getRegisteredDefinition(name) {
+    if (name) {
+      return registry[name.toLowerCase()];
+    }
+  }
+  function registerDefinition(name, definition) {
+    registry[name] = definition;
+  }
+  function generateConstructor(definition) {
+    return function() {
+      return instantiate(definition);
+    };
+  }
+  var HTML_NAMESPACE = "http://www.w3.org/1999/xhtml";
+  function createElementNS(namespace, tag, typeExtension) {
+    if (namespace === HTML_NAMESPACE) {
+      return createElement(tag, typeExtension);
+    } else {
+      return domCreateElementNS(namespace, tag);
+    }
+  }
+  function createElement(tag, typeExtension) {
+    var definition = getRegisteredDefinition(typeExtension || tag);
+    if (definition) {
+      if (tag == definition.tag && typeExtension == definition.is) {
+        return new definition.ctor();
+      }
+      if (!typeExtension && !definition.is) {
+        return new definition.ctor();
+      }
+    }
+    var element;
+    if (typeExtension) {
+      element = createElement(tag);
+      element.setAttribute("is", typeExtension);
+      return element;
+    }
+    element = domCreateElement(tag);
+    if (tag.indexOf("-") >= 0) {
+      implementPrototype(element, HTMLElement);
+    }
+    return element;
+  }
+  function cloneNode(deep) {
+    var n = domCloneNode.call(this, deep);
+    upgrade(n);
+    return n;
+  }
+  var domCreateElement = document.createElement.bind(document);
+  var domCreateElementNS = document.createElementNS.bind(document);
+  var domCloneNode = Node.prototype.cloneNode;
+  var isInstance;
+  if (!Object.__proto__ && !useNative) {
+    isInstance = function(obj, ctor) {
+      var p = obj;
+      while (p) {
+        if (p === ctor.prototype) {
+          return true;
+        }
+        p = p.__proto__;
+      }
+      return false;
+    };
+  } else {
+    isInstance = function(obj, base) {
+      return obj instanceof base;
+    };
+  }
+  document.registerElement = register;
+  document.createElement = createElement;
+  document.createElementNS = createElementNS;
+  Node.prototype.cloneNode = cloneNode;
+  scope.registry = registry;
+  scope.instanceof = isInstance;
+  scope.reservedTagList = reservedTagList;
+  scope.getRegisteredDefinition = getRegisteredDefinition;
+  document.register = document.registerElement;
+});
+
+(function(scope) {
+  var useNative = scope.useNative;
+  var initializeModules = scope.initializeModules;
+  var isIE11OrOlder = /Trident/.test(navigator.userAgent);
+  if (useNative) {
+    var nop = function() {};
+    scope.watchShadow = nop;
+    scope.upgrade = nop;
+    scope.upgradeAll = nop;
+    scope.upgradeDocumentTree = nop;
+    scope.upgradeSubtree = nop;
+    scope.takeRecords = nop;
+    scope.instanceof = function(obj, base) {
+      return obj instanceof base;
+    };
+  } else {
+    initializeModules();
+  }
+  var upgradeDocumentTree = scope.upgradeDocumentTree;
+  if (!window.wrap) {
+    if (window.ShadowDOMPolyfill) {
+      window.wrap = ShadowDOMPolyfill.wrapIfNeeded;
+      window.unwrap = ShadowDOMPolyfill.unwrapIfNeeded;
+    } else {
+      window.wrap = window.unwrap = function(node) {
+        return node;
+      };
+    }
+  }
+  function bootstrap() {
+    upgradeDocumentTree(wrap(document));
+    if (window.HTMLImports) {
+      HTMLImports.__importsParsingHook = function(elt) {
+        upgradeDocumentTree(wrap(elt.import));
+      };
+    }
+    CustomElements.ready = true;
+    setTimeout(function() {
+      CustomElements.readyTime = Date.now();
+      if (window.HTMLImports) {
+        CustomElements.elapsed = CustomElements.readyTime - HTMLImports.readyTime;
+      }
+      document.dispatchEvent(new CustomEvent("WebComponentsReady", {
+        bubbles: true
+      }));
+    });
+  }
+  if (isIE11OrOlder && typeof window.CustomEvent !== "function") {
+    window.CustomEvent = function(inType, params) {
+      params = params || {};
+      var e = document.createEvent("CustomEvent");
+      e.initCustomEvent(inType, Boolean(params.bubbles), Boolean(params.cancelable), params.detail);
+      return e;
+    };
+    window.CustomEvent.prototype = window.Event.prototype;
+  }
+  if (document.readyState === "complete" || scope.flags.eager) {
+    bootstrap();
+  } else if (document.readyState === "interactive" && !window.attachEvent && (!window.HTMLImports || window.HTMLImports.ready)) {
+    bootstrap();
+  } else {
+    var loadEvent = window.HTMLImports && !HTMLImports.ready ? "HTMLImportsLoaded" : "DOMContentLoaded";
+    window.addEventListener(loadEvent, bootstrap);
+  }
+})(window.CustomElements);
+
+(function(scope) {
+  if (!Function.prototype.bind) {
+    Function.prototype.bind = function(scope) {
+      var self = this;
+      var args = Array.prototype.slice.call(arguments, 1);
+      return function() {
+        var args2 = args.slice();
+        args2.push.apply(args2, arguments);
+        return self.apply(scope, args2);
+      };
+    };
+  }
+})(window.WebComponents);
+
+(function(scope) {
+  "use strict";
+  if (!window.performance) {
+    var start = Date.now();
+    window.performance = {
+      now: function() {
+        return Date.now() - start;
+      }
+    };
+  }
+  if (!window.requestAnimationFrame) {
+    window.requestAnimationFrame = function() {
+      var nativeRaf = window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame;
+      return nativeRaf ? function(callback) {
+        return nativeRaf(function() {
+          callback(performance.now());
+        });
+      } : function(callback) {
+        return window.setTimeout(callback, 1e3 / 60);
+      };
+    }();
+  }
+  if (!window.cancelAnimationFrame) {
+    window.cancelAnimationFrame = function() {
+      return window.webkitCancelAnimationFrame || window.mozCancelAnimationFrame || function(id) {
+        clearTimeout(id);
+      };
+    }();
+  }
+  var elementDeclarations = [];
+  var polymerStub = function(name, dictionary) {
+    if (typeof name !== "string" && arguments.length === 1) {
+      Array.prototype.push.call(arguments, document._currentScript);
+    }
+    elementDeclarations.push(arguments);
+  };
+  window.Polymer = polymerStub;
+  scope.consumeDeclarations = function(callback) {
+    scope.consumeDeclarations = function() {
+      throw "Possible attempt to load Polymer twice";
+    };
+    if (callback) {
+      callback(elementDeclarations);
+    }
+    elementDeclarations = null;
+  };
+  function installPolymerWarning() {
+    if (window.Polymer === polymerStub) {
+      window.Polymer = function() {
+        throw new Error("You tried to use polymer without loading it first. To " + 'load polymer, <link rel="import" href="' + 'components/polymer/polymer.html">');
+      };
+    }
+  }
+  if (HTMLImports.useNative) {
+    installPolymerWarning();
+  } else {
+    addEventListener("DOMContentLoaded", installPolymerWarning);
+  }
+})(window.WebComponents);
+
+(function(scope) {
+  var style = document.createElement("style");
+  style.textContent = "" + "body {" + "transition: opacity ease-in 0.2s;" + " } \n" + "body[unresolved] {" + "opacity: 0; display: block; overflow: hidden; position: relative;" + " } \n";
+  var head = document.querySelector("head");
+  head.insertBefore(style, head.firstChild);
+})(window.WebComponents);
+
+(function(scope) {
+  window.Platform = scope;
+})(window.WebComponents);
\ No newline at end of file
diff --git a/bower_components/webcomponentsjs/webcomponents.min.js b/bower_components/webcomponentsjs/webcomponents.min.js
new file mode 100644
index 0000000..474305f
--- /dev/null
+++ b/bower_components/webcomponentsjs/webcomponents.min.js
@@ -0,0 +1,14 @@
+/**
+ * @license
+ * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+ * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+ * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+ * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+ * Code distributed by Google as part of the polymer project is also
+ * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+ */
+// @version 0.5.5
+window.WebComponents=window.WebComponents||{},function(e){var t=e.flags||{},n="webcomponents.js",r=document.querySelector('script[src*="'+n+'"]');if(!t.noOpts){if(location.search.slice(1).split("&").forEach(function(e){e=e.split("="),e[0]&&(t[e[0]]=e[1]||!0)}),r)for(var o,i=0;o=r.attributes[i];i++)"src"!==o.name&&(t[o.name]=o.value||!0);if(t.log){var a=t.log.split(",");t.log={},a.forEach(function(e){t.log[e]=!0})}else t.log={}}t.shadow=t.shadow||t.shadowdom||t.polyfill,t.shadow="native"===t.shadow?!1:t.shadow||!HTMLElement.prototype.createShadowRoot,t.register&&(window.CustomElements=window.CustomElements||{flags:{}},window.CustomElements.flags.register=t.register),e.flags=t}(WebComponents),WebComponents.flags.shadow&&("undefined"==typeof WeakMap&&!function(){var e=Object.defineProperty,t=Date.now()%1e9,n=function(){this.name="__st"+(1e9*Math.random()>>>0)+(t++ +"__")};n.prototype={set:function(t,n){var r=t[this.name];return r&&r[0]===t?r[1]=n:e(t,this.name,{value:[t,n],writable:!0}),this},get:function(e){var t;return(t=e[this.name])&&t[0]===e?t[1]:void 0},"delete":function(e){var t=e[this.name];return t&&t[0]===e?(t[0]=t[1]=void 0,!0):!1},has:function(e){var t=e[this.name];return t?t[0]===e:!1}},window.WeakMap=n}(),window.ShadowDOMPolyfill={},function(e){"use strict";function t(){if("undefined"!=typeof chrome&&chrome.app&&chrome.app.runtime)return!1;if(navigator.getDeviceStorage)return!1;try{var e=new Function("return true;");return e()}catch(t){return!1}}function n(e){if(!e)throw new Error("Assertion failed")}function r(e,t){for(var n=W(t),r=0;r<n.length;r++){var o=n[r];k(e,o,F(t,o))}return e}function o(e,t){for(var n=W(t),r=0;r<n.length;r++){var o=n[r];switch(o){case"arguments":case"caller":case"length":case"name":case"prototype":case"toString":continue}k(e,o,F(t,o))}return e}function i(e,t){for(var n=0;n<t.length;n++)if(t[n]in e)return t[n]}function a(e,t,n){B.value=n,k(e,t,B)}function s(e){var 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+<title>Technical Specification for C++ Extensions for Concurrency, Working Draft</title></head>
+<body class="cxx-draft">
+<cxx-titlepage stage="draft">
+    
+    
+      <div class="page">
+        <table class="header">
+          
+            <tr><th>Document Number:</th><td><cxx-docnum class="docname">N4501</cxx-docnum></td></tr>
+          
+          
+            <tr><th>Date:</th><td><time pubdate=""><span class="pubyear">2015</span>-05-08</time></td></tr>
+          
+          
+          
+            <tr><th>Editor:</th><td><cxx-editor>
+    Artur Laksberg<br>
+    Microsoft Corp.<br>
+    <cxx-email><a href="mailto:arturl@microsoft.com">arturl@microsoft.com</a></cxx-email>
+  </cxx-editor></td></tr>
+          
+        </table>
+        <h1>Working Draft, Technical Specification for C++ Extensions for Concurrency</h1>
+        <p class="warning"><strong>Note: this is an early draft. It’s known to be
+        incomplet and incorrekt, and it has lots of b<span style="margin-left: -1.2pt; margin-right: 1pt">a</span>d<span style="width:1.5em"> </span>for<span style="margin-left:-3pt; margin-right:0.6pt">mat</span>ti<span style="position:relative; top:-0.15ex">n</span>g.</strong></p>
+      </div>
+    
+
+    
+
+    
+  </cxx-titlepage>
+
+<cxx-toc>
+    
+    <nav>
+      <h1>Contents</h1>
+      
+        
+          <ol>
+            
+              <li><span class="marker">1</span><a href="#general">General</a>
+        
+          <ol>
+            
+              <li><span class="marker">1.1</span><a href="#general.namespaces">Namespaces, headers, and modifications to standard classes</a>
+        
+      </li>
+            
+              <li><span class="marker">1.2</span><a href="#general.plans">Future plans (Informative)</a>
+        
+      </li>
+            
+              <li><span class="marker">1.3</span><a href="#general.feature.test">Feature-testing recommendations (Informative)</a>
+        
+      </li>
+            
+          </ol>
+        
+      </li>
+            
+              <li><span class="marker">2</span><a href="#futures"> Improvements to std::future&lt;T&gt; and Related APIs</a>
+        
+          <ol>
+            
+              <li><span class="marker">2.1</span><a href="#futures.general">General</a>
+        
+      </li>
+            
+              <li><span class="marker">2.2</span><a href="#header.future.synop">Header &lt;experimental/future&gt; synopsis</a>
+        
+      </li>
+            
+              <li><span class="marker">2.3</span><a href="#futures.unique_future">Class template future</a>
+        
+      </li>
+            
+              <li><span class="marker">2.4</span><a href="#futures.shared_future">Class template shared_future</a>
+        
+      </li>
+            
+              <li><span class="marker">2.5</span><a href="#futures.promise">Class template promise</a>
+        
+      </li>
+            
+              <li><span class="marker">2.6</span><a href="#futures.task">Class template packaged_task</a>
+        
+      </li>
+            
+              <li><span class="marker">2.7</span><a href="#futures.when_all"> Function template when_all</a>
+        
+      </li>
+            
+              <li><span class="marker">2.8</span><a href="#futures.when_any_result"> Class template when_any_result</a>
+        
+      </li>
+            
+              <li><span class="marker">2.9</span><a href="#futures.when_any"> Function template when_any</a>
+        
+      </li>
+            
+              <li><span class="marker">2.10</span><a href="#futures.make_ready_future"> Function template make_ready_future</a>
+        
+      </li>
+            
+              <li><span class="marker">2.11</span><a href="#futures.make_exceptional_future">Function template make_exceptional_future</a>
+        
+      </li>
+            
+          </ol>
+        
+      </li>
+            
+              <li><span class="marker">3</span><a href="#coordination">Latches and Barriers</a>
+        
+          <ol>
+            
+              <li><span class="marker">3.1</span><a href="#coordination.general">General</a>
+        
+      </li>
+            
+              <li><span class="marker">3.2</span><a href="#thread.coordination.terminology">Terminology</a>
+        
+      </li>
+            
+              <li><span class="marker">3.3</span><a href="#thread.coordination.latch">Latches</a>
+        
+      </li>
+            
+              <li><span class="marker">3.4</span><a href="#thread.coordination.latch.synopsis">Header &lt;experimental/latch&gt; synopsis</a>
+        
+      </li>
+            
+              <li><span class="marker">3.5</span><a href="#coordination.latch.class">Class latch</a>
+        
+      </li>
+            
+              <li><span class="marker">3.6</span><a href="#thread.coordination.barrier">Barrier types</a>
+        
+      </li>
+            
+              <li><span class="marker">3.7</span><a href="#thread.coordination.barrier.synopsis">Header &lt;experimental/barrier&gt; synopsis</a>
+        
+      </li>
+            
+              <li><span class="marker">3.8</span><a href="#coordination.barrier.class">Class barrier</a>
+        
+      </li>
+            
+              <li><span class="marker">3.9</span><a href="#coordination.flexbarrier.class">Class flex_barrier</a>
+        
+      </li>
+            
+          </ol>
+        
+      </li>
+            
+              <li><span class="marker">4</span><a href="#atomic">Atomic Smart Pointers</a>
+        
+          <ol>
+            
+              <li><span class="marker">4.1</span><a href="#atomic.smartptr.general">General</a>
+        
+      </li>
+            
+              <li><span class="marker">4.2</span><a href="#atomic.smartptr.synop">Header &lt;experimental/atomic&gt; synopsis</a>
+        
+      </li>
+            
+              <li><span class="marker">4.3</span><a href="#atomic.shared_ptr">Class template atomic_shared_ptr</a>
+        
+      </li>
+            
+              <li><span class="marker">4.4</span><a href="#atomic.weak_ptr">Class template atomic_weak_ptr</a>
+        
+      </li>
+            
+          </ol>
+        
+      </li>
+            
+          </ol>
+        
+      
+    </nav>
+  </cxx-toc>
+
+
+
+
+<cxx-clause id="general">
+    
+
+    <section>
+      <header><span class="section-number">1</span> <h1 data-bookmark-label="1 General">General</h1> <span style="float:right"><a href="#general">[general]</a></span></header>
+      
+  
+
+  
+  <cxx-section id="general.namespaces">
+    
+
+    <section>
+      <header><span class="section-number">1.1</span> <h1 data-bookmark-label="1.1 Namespaces, headers, and modifications to standard classes">Namespaces, headers, and modifications to standard classes</h1> <span style="float:right"><a href="#general.namespaces">[general.namespaces]</a></span></header>
+      
+    
+
+    <cxx-ednote>
+    
+    <aside><strong>Editor's note:</strong> This section reflects the consensus between the LWG and LEWG at the
+    <a href="http://wiki.edg.com/twiki/bin/view/Wg21chicago2013/FundamentalsTS#What_can_go_into_a_TS">Chicago 2013</a> and
+    <a href="http://wiki.edg.com/twiki/bin/view/Wg21issaquah/ChangesToExistingInTS">Issaquah 2014</a> meetings.</aside>
+  </cxx-ednote>
+
+    <p para_num="1" id="general.namespaces.1">Since the extensions described in this technical specification
+    are experimental and not part of the C++ standard library, they
+    should not be declared directly within namespace
+    <code>std</code>.
+    Unless otherwise specified, all components described in this technical specification either:
+    </p>
+    
+    <ul>
+      <li>modify an existing interface in the C++ Standard Library in-place,</li>
+      <li>
+        are declared in a namespace whose name appends <code>::experimental::concurrency_v1</code>
+        to a namespace defined in the C++ Standard Library,
+        such as <code>std</code>, or
+      </li>
+      <li>
+        are declared in a subnamespace of a namespace described in the previous bullet,
+        whose name is not the same as an existing subnamespace of namespace <code>std</code>.
+      </li>
+    </ul>
+
+    <p para_num="2" id="general.namespaces.2">Each header described in this technical
+    specification shall import the contents of
+    <code>std::experimental::concurrency_v1</code> into
+    <code>std::experimental</code> as if by</p>
+    
+
+    <pre><code>namespace std {
+  namespace experimental {
+    inline namespace concurrency_v1 {}
+  }
+}</code></pre>
+
+    <p para_num="3" id="general.namespaces.3">Unless otherwise specified, references to other entities
+    described in this technical specification are assumed to be
+    qualified with <code>std::experimental::concurrency_v1::</code>,
+    and references to entities described in the standard are assumed
+    to be qualified with <code>std::</code>.</p>
+
+    <p para_num="4" id="general.namespaces.4">Extensions that are expected to eventually be added to an
+    existing header <code>&lt;meow&gt;</code> are provided inside the
+    <code>&lt;experimental/meow&gt;</code> header, which shall include
+    the standard contents of <code>&lt;meow&gt;</code> as if by</p>
+    <pre><code>#include &lt;meow&gt;</code></pre>
+
+    <p para_num="5" id="general.namespaces.5">New headers are also provided in the
+    <code>&lt;experimental/&gt;</code> directory, but without such an
+    <code>#include</code>.</p>
+
+    <table role="presentation" is="cxx-table" id="tab.cxx.headers" class="list" columns="3">
+    
+
+    <caption>Table 1 — <wbr><span>C++ library headers</span></caption>
+    
+      
+      <tbody><tr><td><ul><li><code>&lt;experimental/future&gt;</code></li><li><code>&lt;experimental/latch&gt;</code></li></ul></td><td><ul><li><code>&lt;experimental/barrier&gt;</code></li><li><code>&lt;experimental/atomic&gt;</code></li></ul></td><td><ul></ul></td></tr>
+    </tbody>
+  </table>
+  
+    </section>
+  </cxx-section>
+
+  <cxx-section id="general.plans">
+    
+
+    <section>
+      <header><span class="section-number">1.2</span> <h1 data-bookmark-label="1.2 Future plans (Informative)">Future plans (Informative)</h1> <span style="float:right"><a href="#general.plans">[general.plans]</a></span></header>
+      
+    
+
+    <p para_num="1" id="general.plans.1">This section describes tentative plans for future versions of
+    this technical specification and plans for moving content into
+    future versions of the C++ Standard.</p>
+
+    <p para_num="2" id="general.plans.2">The C++ committee intends to release a new version of this
+    technical specification approximately every year, containing the
+    library extensions we hope to add to a near-future version of the
+    C++ Standard.  Future versions will define their contents in
+    <code>std::experimental::concurrency_v2</code>,
+    <code>std::experimental::concurrency_v3</code>, etc., with the
+    most recent implemented version inlined into
+    <code>std::experimental</code>.</p>
+
+    <p para_num="3" id="general.plans.3">When an extension defined in this or a future version of this
+    technical specification represents enough existing practice, it
+    will be moved into the next version of the C++ Standard by
+    removing the <code>experimental::concurrency_v<var>N</var></code>
+    segment of its namespace and by removing the
+    <code>experimental/</code> prefix from its header's path.</p>
+  
+    </section>
+  </cxx-section>
+
+  <cxx-section id="general.feature.test">
+    
+
+    <section>
+      <header><span class="section-number">1.3</span> <h1 data-bookmark-label="1.3 Feature-testing recommendations (Informative)">Feature-testing recommendations (Informative)</h1> <span style="float:right"><a href="#general.feature.test">[general.feature.test]</a></span></header>
+      
+    
+
+    <p para_num="1" id="general.feature.test.1">
+      For the sake of improved portability between partial implementations of various C++ standards,
+      WG21 (the ISO technical committee for the C++ programming language) recommends
+      that implementers and programmers follow the guidelines in this section concerning feature-test macros.
+      <cxx-note><span class="nowrap">[ <em>Note:</em></span>
+    <a href="http://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations">WG21's SD-6</a> makes similar recommendations for the C++ Standard itself.
+    <span class="nowrap">— <em>end note</em> ]</span>
+  </cxx-note>
+    </p>
+
+    <p para_num="2" id="general.feature.test.2">
+      Implementers who provide a new standard feature should define a macro with the recommended name,
+      in the same circumstances under which the feature is available (for example, taking into account relevant command-line options),
+      to indicate the presence of support for that feature.
+      Implementers should define that macro with the value specified in
+      the most recent version of this technical specification that they have implemented.
+      The recommended macro name is "<code>__cpp_lib_experimental_</code>" followed by the string in the "Macro Name Suffix" column.
+    </p>
+
+    <p para_num="3" id="general.feature.test.3">
+      Programmers who wish to determine whether a feature is available in an implementation should base that determination on
+      the presence of the header (determined with <code>__has_include(&lt;header/name&gt;)</code>) and
+      the state of the macro with the recommended name.
+      (The absence of a tested feature may result in a program with decreased functionality, or the relevant functionality may be provided in a different way.
+      A program that strictly depends on support for a feature can just try to use the feature unconditionally;
+      presumably, on an implementation lacking necessary support, translation will fail.)
+    </p>
+
+    <table is="cxx-table" class="column-rules">
+    
+
+    <caption>Table 2 — <wbr><span>Significant features in this technical specification</span></caption>
+    
+      
+
+      <thead>
+        <tr>
+          <th>Doc. No.</th>
+          <th>Title</th>
+          <th>Primary Section</th>
+          <th>Macro Name Suffix</th>
+          <th>Value</th>
+          <th>Header</th>
+        </tr>
+      </thead>
+
+      <!-- These rows are in the same order as their feature appears in this document. -->
+      <tbody><tr>
+        <td>N4399</td>
+        <td>Improvements to std::future&lt;T&gt; and Related APIs</td>
+        <td><cxx-ref to="futures"><a title="futures" href="#futures">2</a></cxx-ref></td>
+        <td><code>future_continuations</code></td>
+        <td>201505</td>
+        <td><code>&lt;experimental/future&gt;</code></td>
+      </tr>
+
+      <tr>
+        <td>N4204</td>
+        <td>C++ Latches and Barriers</td>
+        <td><cxx-ref to="coordination"><a title="coordination" href="#coordination">3</a></cxx-ref></td>
+        <td><code>latch</code></td>
+        <td>201505</td>
+        <td><code>&lt;experimental/latch&gt;</code></td>
+      </tr>
+
+      <tr>
+        <td>N4204</td>
+        <td>C++ Latches and Barriers</td>
+        <td><cxx-ref to="coordination"><a title="coordination" href="#coordination">3</a></cxx-ref></td>
+        <td><code>barrier</code></td>
+        <td>201505</td>
+        <td><code>&lt;experimental/barrier&gt;</code></td>
+      </tr>
+
+      <tr>
+        <td>N4260</td>
+        <td>Atomic Smart Pointers</td>
+        <td><cxx-ref to="atomic"><a title="atomic" href="#atomic">4</a></cxx-ref></td>
+        <td><code>atomic_smart_pointers</code></td>
+        <td>201505</td>
+        <td><code>&lt;experimental/atomics&gt;</code></td>
+      </tr>
+
+    </tbody>
+  </table>
+    
+  
+    </section>
+  </cxx-section>
+
+    </section>
+  </cxx-clause>
+
+<cxx-clause id="futures">
+    
+
+    <section>
+      <header><span class="section-number">2</span> <h1 data-bookmark-label="2  Improvements to std::future<T> and Related APIs"> Improvements to <code>std::future&lt;T&gt;</code> and Related APIs</h1> <span style="float:right"><a href="#futures">[futures]</a></span></header>
+      
+
+
+<cxx-section id="futures.general">
+    
+
+    <section>
+      <header><span class="section-number">2.1</span> <h1 data-bookmark-label="2.1 General">General</h1> <span style="float:right"><a href="#futures.general">[futures.general]</a></span></header>
+      
+
+<p para_num="1" id="futures.general.1">
+
+The extensions proposed here are an evolution of the functionality of
+<code>std::future</code> and <code>std::shared_future</code>. The extensions
+enable wait-free composition of asynchronous operations. Class templates
+<code>std::promise</code> and <code>std::packaged_task</code> are also updated
+to be compatible with the updated <code>std::future</code>.
+
+</p>
+
+
+    </section>
+  </cxx-section>
+
+  <cxx-section id="header.future.synop">
+    
+
+    <section>
+      <header><span class="section-number">2.2</span> <h1 data-bookmark-label="2.2 Header <experimental/future> synopsis">Header &lt;experimental/future&gt; synopsis</h1> <span style="float:right"><a href="#header.future.synop">[header.future.synop]</a></span></header>
+      
+    
+
+    <cxx-ednote>
+    
+    <aside><strong>Editor's note:</strong> 
+      An additional editorial fix as in Fundamental v1 TS is applied in the declaration of <code>swap</code> for <code>packaged_task</code>
+    </aside>
+  </cxx-ednote>
+
+    <pre><code>#include &lt;future&gt;
+
+namespace std {
+  namespace experimental {
+  inline namespace concurrency_v1 {
+
+    template &lt;class R&gt; class promise;
+    template &lt;class R&gt; class promise&lt;R&amp;&gt;;
+    template &lt;&gt; class promise&lt;void&gt;;
+
+    template &lt;class R&gt;
+      void swap(promise&lt;R&gt;&amp; x, promise&lt;R&gt;&amp; y) noexcept;
+
+    template &lt;class R&gt; class future;
+    template &lt;class R&gt; class future&lt;R&amp;&gt;;
+    template &lt;&gt; class future&lt;void&gt;;
+    template &lt;class R&gt; class shared_future;
+    template &lt;class R&gt; class shared_future&lt;R&amp;&gt;;
+    template &lt;&gt; class shared_future&lt;void&gt;;
+
+    template &lt;class&gt; class packaged_task; // undefined
+    template &lt;class R, class... ArgTypes&gt;
+      class packaged_task&lt;R(ArgTypes...)&gt;;
+
+    template &lt;class R, class... ArgTypes&gt;
+      void swap(packaged_task&lt;R(ArgTypes...)&gt;&amp;, packaged_task&lt;R(ArgTypes...)&gt;&amp;) noexcept;
+
+    template &lt;class T&gt;
+      <em>see below</em> make_ready_future(T&amp;&amp; value);
+    future&lt;void&gt; make_ready_future();
+
+    template &lt;class T&gt;
+      future&lt;T&gt; make_exceptional_future(exception_ptr ex);
+    template &lt;class T, class E&gt;
+      future&lt;T&gt; make_exceptional_future(E ex);
+
+    template &lt;class InputIterator&gt;
+      <em>see below</em> when_all(InputIterator first, InputIterator last);
+    template &lt;class... Futures&gt;
+      <em>see below</em> when_all(Futures&amp;&amp;... futures);
+
+    template &lt;class Sequence&gt;
+    struct when_any_result;
+
+    template &lt;class InputIterator&gt;
+      <em>see below</em> when_any(InputIterator first, InputIterator last);
+    template &lt;class... Futures&gt;
+      <em>see below</em> when_any(Futures&amp;&amp;... futures);
+
+  } // namespace concurrency_v1
+  } // namespace experimental
+
+  template &lt;class R, class Alloc&gt;
+    struct uses_allocator&lt;experimental::promise&lt;R&gt;, Alloc&gt;;
+
+  template &lt;class R, class Alloc&gt;
+    struct uses_allocator&lt;experimental::packaged_task&lt;R&gt;, Alloc&gt;;
+
+} // namespace std</code></pre>
+  
+    </section>
+  </cxx-section>
+
+<cxx-section id="futures.unique_future">
+    
+
+    <section>
+      <header><span class="section-number">2.3</span> <h1 data-bookmark-label="2.3 Class template future">Class template <code>future</code></h1> <span style="float:right"><a href="#futures.unique_future">[futures.unique_future]</a></span></header>
+      
+
+
+<p para_num="1" id="futures.unique_future.1">
+The specifications of all declarations within this subclause <cxx-ref to="futures.unique_future"><a title="futures.unique_future" href="#futures.unique_future">2.3</a></cxx-ref>
+and its subclauses are the same as the corresponding declarations,
+as specified in <cxx-ref in="cxx" to="futures.unique_future">C++14 <span title="futures.unique_future">§30.6.6</span></cxx-ref>,
+unless explicitly specified otherwise.
+</p>
+
+    <pre><code>namespace std {
+  namespace experimental {
+  inline namespace concurrency_v1 {
+
+    template &lt;class R&gt;
+    class future {
+    public:
+      future() noexcept;
+      future(future &amp;&amp;) noexcept;
+      future(const future&amp;) = delete;
+      future(future&lt;future&lt;R&gt;&gt;&amp;&amp;) noexcept;
+      ~future();
+      future&amp; operator=(const future&amp;) = delete;
+      future&amp; operator=(future&amp;&amp;) noexcept;
+      shared_future&lt;R&gt; share();
+
+      // retrieving the value
+      <em>see below</em> get();
+
+      // functions to check state
+      bool valid() const noexcept;
+      bool is_ready() const;
+
+      void wait() const;
+      template &lt;class Rep, class Period&gt;
+        future_status wait_for(const chrono::duration&lt;Rep, Period&gt;&amp; rel_time) const;
+      template &lt;class Clock, class Duration&gt;
+        future_status wait_until(const chrono::time_point&lt;Clock, Duration&gt;&amp; abs_time) const;
+
+      // continuations
+      template &lt;class F&gt;
+        <em>see below</em> then(F&amp;&amp; func);
+
+    };
+
+  } // namespace concurrency_v1
+  } // namespace experimental
+  } // namespace std</code></pre>
+
+<cxx-function para_num="2" id="futures.unique_future.2">
+    
+    <pre><code><cxx-signature>future(future&lt;future&lt;R&gt;&gt;&amp;&amp; rhs) noexcept;</cxx-signature></code></pre>
+
+    <dl>
+      
+  
+  <cxx-effects para_num="3" id="futures.unique_future.3">
+    
+    <dt>Effects:</dt><dd>Constructs a <code>future</code> object from the shared state referred to by
+  <code>rhs</code>.
+
+
+The <code>future</code> becomes ready when one of the following occurs:
+<ul>
+  <li>
+    Both the <code>rhs</code> and <code>rhs.get()</code> are ready. The value or the exception from <code>rhs.get()</code> is stored in the <code>future</code>'s shared state.
+  </li>
+
+  <li>
+    <code>rhs</code> is ready but <code>rhs.get()</code> is invalid. An exception of type <code>std::future_error</code>, with an error condition of <code>std::future_errc::broken_promise</code> is stored in the <code>future</code>'s shared state.
+  </li>
+</ul>
+
+</dd>
+  </cxx-effects>
+  <cxx-postconditions para_num="4" id="futures.unique_future.4">
+    
+    <dt>Postconditions:</dt><dd>
+      <ul>
+      <li><code>valid() == true</code>.</li>
+      <li><code>rhs.valid() == false</code>.</li>
+    </ul>
+  </dd>
+  </cxx-postconditions>
+
+    </dl>
+  </cxx-function>
+
+<p para_num="5" id="futures.unique_future.5">
+
+The member function template <code>then</code> provides a mechanism for attaching
+a <i>continuation</i> to a <code>future</code> object, which will be executed
+as specified below.
+
+</p>
+<cxx-function para_num="6" id="futures.unique_future.6">
+    
+    <pre><code><cxx-signature>
+template &lt;class F&gt;
+<em>see below</em> then(F&amp;&amp; func);
+</cxx-signature></code></pre>
+
+    <dl>
+      
+
+
+<cxx-requires para_num="7" id="futures.unique_future.7">
+    
+    <dt>Requires:</dt><dd><code><em>INVOKE</em>(<em>DECAY_COPY</em> (std::forward&lt;F&gt;(func)), std::move(*this))</code> shall be a valid expression.</dd>
+  </cxx-requires>
+
+  <cxx-effects para_num="8" id="futures.unique_future.8">
+    
+    <dt>Effects:</dt><dd>
+    The function creates a shared state that is associated with the returned
+    <code>future</code> object. Additionally,
+    <ul>
+      <li>
+        When the object's shared state is ready, the continuation
+        <code><em>INVOKE</em>(<em>DECAY_COPY</em>(std::forward&lt;F&gt;(func)), std::move(*this))</code> is called on
+        an unspecified thread of execution with the call to 
+        <code><em>DECAY_COPY</em>()</code> being evaluated in the thread that called 
+        <code>then</code>.
+      </li>
+      <li>
+      Any value returned from the continuation is stored as the result in the
+      shared state of the resulting <code>future</code>. Any exception propagated from the execution of
+      the continuation is stored as the exceptional result in the shared state of the resulting <code>future</code>.
+      </li>
+    </ul>
+  </dd>
+  </cxx-effects>
+
+  <cxx-returns para_num="9" id="futures.unique_future.9">
+    
+    <dt>Returns:</dt><dd>
+
+
+        When <code>result_of_t&lt;decay_t&lt;F&gt;(future&lt;R&gt;)&gt;</code>
+        is <code>future&lt;R2&gt;</code>, for some type <code>R2</code>, the function returns <code>future&lt;R2&gt;</code>.
+
+        Otherwise, the function returns <code>future&lt;result_of_t&lt;decay_t&lt;F&gt;(future&lt;R&gt;)&gt;&gt;</code>.
+
+      <cxx-note><span class="nowrap">[ <em>Note:</em></span>
+    
+        The rule above is referred to as <em>implicit unwrapping</em>. Without this rule,
+        the return type of <code>then</code> taking a callable returning a
+        <code>future&lt;R&gt;</code> would have been <code>future&lt;future&lt;R&gt;&gt;</code>.
+        This rule avoids such nested <code>future</code> objects.
+        The type of <code>f2</code> below is
+          <code>future&lt;int&gt;</code> and not <code>future&lt;future&lt;int&gt;&gt;</code>:
+        <cxx-example>
+    
+    <span class="nowrap">[ <em>Example:</em></span>
+    
+<pre>future&lt;int&gt; f1 = g();
+future&lt;int&gt; f2 = f1.then([](future&lt;int&gt; f) {
+                    future&lt;int&gt; f3 = h();
+                    return f3;
+                 });
+</pre>
+        
+    <span class="nowrap">— <em>end example</em> ]</span>
+  </cxx-example>
+        
+    <span class="nowrap">— <em>end note</em> ]</span>
+  </cxx-note>
+      
+    
+  </dd>
+  </cxx-returns>
+
+  <cxx-postconditions para_num="10" id="futures.unique_future.10">
+    
+    <dt>Postconditions:</dt><dd>
+  <code>valid() == false</code> on the original <code>future</code>.
+    <code>valid() == true</code> on the <code>future</code> returned from <code>then.</code>
+    <cxx-note><span class="nowrap">[ <em>Note:</em></span>
+    
+      In case of implicit unwrapping, the validity of the <code>future</code> returned from
+      <code>then</code> cannot be established until after the completion of the
+      continuation. If it is not valid, the resulting <code>future</code>
+      becomes ready with an exception of type <code>std::future_error</code>,
+      with an error condition of <code>std::future_errc::broken_promise</code>.
+    
+    <span class="nowrap">— <em>end note</em> ]</span>
+  </cxx-note>
+  </dd>
+  </cxx-postconditions>
+
+    </dl>
+  </cxx-function>
+
+<cxx-function para_num="11" id="futures.unique_future.11">
+    
+    <pre><code><cxx-signature>bool is_ready() const;</cxx-signature></code></pre>
+
+    <dl>
+      
+  
+  <cxx-returns para_num="12" id="futures.unique_future.12">
+    
+    <dt>Returns:</dt><dd> <code>true</code> if the shared state is ready, otherwise <code>false</code>.</dd>
+  </cxx-returns>
+
+    </dl>
+  </cxx-function>
+
+
+    </section>
+  </cxx-section>
+
+<cxx-section id="futures.shared_future">
+    
+
+    <section>
+      <header><span class="section-number">2.4</span> <h1 data-bookmark-label="2.4 Class template shared_future">Class template <code>shared_future</code></h1> <span style="float:right"><a href="#futures.shared_future">[futures.shared_future]</a></span></header>
+      
+
+<p para_num="1" id="futures.shared_future.1">
+The specifications of all declarations within this subclause <cxx-ref to="futures.shared_future"><a title="futures.shared_future" href="#futures.shared_future">2.4</a></cxx-ref>
+and its subclauses are the same as the corresponding declarations,
+as specified in <cxx-ref in="cxx" to="futures.shared_future">C++14 <span title="futures.shared_future">§30.6.7</span></cxx-ref>,
+unless explicitly specified otherwise.
+</p>
+
+<pre>  namespace std {
+  namespace experimental {
+  inline namespace concurrency_v1 {
+
+    template &lt;class R&gt;
+    class shared_future {
+    public:
+      shared_future() noexcept;
+      shared_future(const shared_future&amp;) noexcept;
+      shared_future(future&lt;R&gt;&amp;&amp;) noexcept;
+      shared_future(future&lt;shared_future&lt;R&gt;&gt;&amp;&amp; rhs) noexcept;
+      ~shared_future();
+      shared_future&amp; operator=(const shared_future&amp;);
+      shared_future&amp; operator=(shared_future&amp;&amp;) noexcept;
+
+      // retrieving the value
+      <em>see below</em> get();
+
+      // functions to check state
+      bool valid() const noexcept;
+      bool is_ready() const;
+
+      void wait() const;
+      template &lt;class Rep, class Period&gt;
+        future_status wait_for(const chrono::duration&lt;Rep, Period&gt;&amp; rel_time) const;
+      template &lt;class Clock, class Duration&gt;
+        future_status wait_until(const chrono::time_point&lt;Clock, Duration&gt;&amp; abs_time) const;
+
+      // continuations
+      template &lt;class F&gt;
+        <em>see below</em> then(F&amp;&amp; func) const;
+    };
+
+  } // namespace concurrency_v1
+  } // namespace experimental
+  } // namespace std
+</pre>
+
+<cxx-function para_num="2" id="futures.shared_future.2">
+    
+    <pre><code><cxx-signature>shared_future(future&lt;shared_future&lt;R&gt;&gt;&amp;&amp; rhs) noexcept;</cxx-signature></code></pre>
+
+    <dl>
+      
+  
+
+  <cxx-effects para_num="3" id="futures.shared_future.3">
+    
+    <dt>Effects:</dt><dd>Constructs a <code>shared_future</code> object from the shared state referred to by
+  <code>rhs</code>.
+
+The <code>shared_future</code> becomes ready when one of the following occurs:
+<ul>
+  <li>
+    Both the <code>rhs</code> and <code>rhs.get()</code> are ready. The value or the exception from <code>rhs.get()</code> is stored in the <code>shared_future</code>'s shared state.
+  </li>
+
+  <li>
+    <code>rhs</code> is ready but <code>rhs.get()</code> is invalid.
+    The <code>shared_future</code> stores an exception of type <code>std::future_error</code>, with an error condition of <code>std::future_errc::broken_promise</code>.
+  </li>
+</ul>
+
+</dd>
+  </cxx-effects>
+  <cxx-postconditions para_num="4" id="futures.shared_future.4">
+    
+    <dt>Postconditions:</dt><dd>
+      <ul>
+      <li><code>valid() == true</code>.</li>
+      <li><code>rhs.valid() == false</code>.</li>
+    </ul>
+  </dd>
+  </cxx-postconditions>
+
+    </dl>
+  </cxx-function>
+
+<p para_num="5" id="futures.shared_future.5">
+The member function template <code>then</code> provides a mechanism for attaching
+a <i>continuation</i> to a <code>shared_future</code> object, which will be executed
+as specified below.
+</p>
+
+<cxx-function para_num="6" id="futures.shared_future.6">
+    
+    <pre><code><cxx-signature>
+template &lt;class F&gt;
+<em>see below</em> then(F&amp;&amp; func) const;
+</cxx-signature></code></pre>
+
+    <dl>
+      
+
+
+<cxx-requires para_num="7" id="futures.shared_future.7">
+    
+    <dt>Requires:</dt><dd><code><em>INVOKE</em>(<em>DECAY_COPY</em> (std::forward&lt;F&gt;(func)), *this)</code> shall be a valid expression.</dd>
+  </cxx-requires>
+
+  <cxx-effects para_num="8" id="futures.shared_future.8">
+    
+    <dt>Effects:</dt><dd>
+    The function creates a shared state that is associated with the returned
+    <code>future</code> object. Additionally,
+    <ul>
+      <li>
+        When the object's shared state is ready, the continuation
+        <code><em>INVOKE</em>(<em>DECAY_COPY</em>(std::forward&lt;F&gt;(func)), *this)</code> is called on
+        an unspecified thread of execution with the call to
+        <code><em>DECAY_COPY</em>()</code> being evaluated in the thread that called 
+        <code>then</code>.
+      </li>
+      <li>
+      Any value returned from the continuation is stored as the result in the
+      shared state of the resulting <code>future</code>. Any exception propagated from the execution of
+      the continuation is stored as the exceptional result in the shared state of the resulting <code>future</code>.
+      </li>
+    </ul>
+  </dd>
+  </cxx-effects>
+
+  <cxx-returns para_num="9" id="futures.shared_future.9">
+    
+    <dt>Returns:</dt><dd>
+
+        When <code>result_of_t&lt;decay_t&lt;F&gt;(const shared_future&amp;)&gt;</code>
+        is <code>future&lt;R2&gt;</code>, for some type <code>R2</code>, the function returns <code>future&lt;R2&gt;</code>.
+
+        Otherwise, the function returns <code>future&lt;result_of_t&lt;decay_t&lt;F&gt;(const shared_future&amp;)&gt;&gt;</code>.
+
+        <cxx-note><span class="nowrap">[ <em>Note:</em></span>
+    
+          This analogous to <code>future</code>. See the notes on
+          the return type of <code>future::then</code> in <cxx-ref to="futures.unique_future"><a title="futures.unique_future" href="#futures.unique_future">2.3</a></cxx-ref>.
+        
+    <span class="nowrap">— <em>end note</em> ]</span>
+  </cxx-note>
+      
+    
+
+  </dd>
+  </cxx-returns>
+
+<cxx-postconditions para_num="10" id="futures.shared_future.10">
+    
+    <dt>Postconditions:</dt><dd>
+  <code>valid() == true</code> on the original <code>shared_future</code> object.
+  <code>valid() == true</code> on the <code>future</code> returned from <code>then.</code>
+
+  <cxx-note><span class="nowrap">[ <em>Note:</em></span>
+    
+    In case of implicit unwrapping, the validity of the <code>future</code> returned from
+    <code>then</code> cannot be established until after the completion of the
+    continuation. In such case, the resulting <code>future</code>
+    becomes ready with an exception of type <code>std::future_error</code>,
+    with an error condition of <code>std::future_errc::broken_promise</code>.
+  
+
+    <span class="nowrap">— <em>end note</em> ]</span>
+  </cxx-note></dd>
+  </cxx-postconditions>
+
+    </dl>
+  </cxx-function>
+
+<cxx-function para_num="11" id="futures.shared_future.11">
+    
+    <pre><code><cxx-signature>bool is_ready() const;</cxx-signature></code></pre>
+
+    <dl>
+      
+
+<cxx-returns para_num="12" id="futures.shared_future.12">
+    
+    <dt>Returns:</dt><dd> <code>true</code> if the shared state is ready, otherwise <code>false</code>.</dd>
+  </cxx-returns>
+
+    </dl>
+  </cxx-function>
+
+
+    </section>
+  </cxx-section>
+
+  <cxx-section id="futures.promise">
+    
+
+    <section>
+      <header><span class="section-number">2.5</span> <h1 data-bookmark-label="2.5 Class template promise">Class template <code>promise</code></h1> <span style="float:right"><a href="#futures.promise">[futures.promise]</a></span></header>
+      
+    
+
+    <p para_num="1" id="futures.promise.1">
+      The specifications of all declarations within this subclause <cxx-ref to="futures.promise"><a title="futures.promise" href="#futures.promise">2.5</a></cxx-ref>
+      and its subclauses are the same as the corresponding declarations,
+      as specified in <cxx-ref in="cxx" to="futures.promise">C++14 <span title="futures.promise">§30.6.5</span></cxx-ref>,
+      unless explicitly specified otherwise.
+    </p>
+    <p para_num="2" id="futures.promise.2">
+      The <code>future</code> returned by the function <code>get_future</code> is the one defined in the <code>experimental</code>
+      namespace (<cxx-ref to="futures.unique_future"><a title="futures.unique_future" href="#futures.unique_future">2.3</a></cxx-ref>).
+    </p>
+
+  
+    </section>
+  </cxx-section>
+
+  <cxx-section id="futures.task">
+    
+
+    <section>
+      <header><span class="section-number">2.6</span> <h1 data-bookmark-label="2.6 Class template packaged_task">Class template <code>packaged_task</code></h1> <span style="float:right"><a href="#futures.task">[futures.task]</a></span></header>
+      
+    
+
+    <p para_num="1" id="futures.task.1">
+      The specifications of all declarations within this subclause <cxx-ref to="futures.task"><a title="futures.task" href="#futures.task">2.6</a></cxx-ref>
+      and its subclauses are the same as the corresponding declarations,
+      as specified in <cxx-ref in="cxx" to="futures.task">C++14 <span title="futures.task">§30.6.9</span></cxx-ref>,
+      unless explicitly specified otherwise.
+    </p>
+    <p para_num="2" id="futures.task.2">
+      The <code>future</code> returned by the function <code>get_future</code> is the one defined in the <code>experimental</code>
+      namespace (<cxx-ref to="futures.unique_future"><a title="futures.unique_future" href="#futures.unique_future">2.3</a></cxx-ref>).
+    </p>
+
+  
+    </section>
+  </cxx-section>
+
+<!--             -->
+<!-- M00when_all -->
+<!--             -->
+
+<cxx-section id="futures.when_all">
+    
+
+    <section>
+      <header><span class="section-number">2.7</span> <h1 data-bookmark-label="2.7  Function template when_all"> Function template <code>when_all</code></h1> <span style="float:right"><a href="#futures.when_all">[futures.when_all]</a></span></header>
+      
+
+
+<p para_num="1" id="futures.when_all.1">
+The function template <code>when_all</code> creates a <code>future</code> object that
+becomes ready when all elements in a set of <code>future</code> and <code>shared_future</code> objects
+become ready.
+</p>
+
+<cxx-function para_num="2" id="futures.when_all.2">
+    
+    <pre><code><cxx-signature>
+template &lt;class InputIterator&gt;
+future&lt;vector&lt;typename iterator_traits&lt;InputIterator&gt;::value_type&gt;&gt;
+when_all(InputIterator first, InputIterator last);
+
+template &lt;class... Futures&gt;
+future&lt;tuple&lt;decay_t&lt;Futures&gt;...&gt;&gt; when_all(Futures&amp;&amp;... futures);
+</cxx-signature></code></pre>
+
+    <dl>
+      
+
+
+<cxx-requires para_num="3" id="futures.when_all.3">
+    
+    <dt>Requires:</dt><dd>
+  
+
+  All <code>future</code>s and <code>shared_future</code>s passed into 
+  <code>when_all</code> must be in a valid state (i.e. <code>valid() == true</code>).
+</dd>
+  </cxx-requires>
+
+<cxx-remarks para_num="4" id="futures.when_all.4">
+    
+    <dt>Remarks:</dt><dd>
+  <ul>
+    <li>
+      
+      The first overload shall not participate in overload resolution unless <code>iterator_traits&lt;InputIterator&gt;::value_type</code> is <code>future&lt;R&gt;</code>
+      or <code>shared_future&lt;R&gt;</code> for some type <code>R</code>.
+      
+    </li>
+    <li>
+      For the second overload, let <em><code>D<sub>i</sub></code></em> be 
+      <code>decay_t&lt;F<sub>i</sub>&gt;</code>, and
+      let <em><code>U<sub>i</sub></code></em> be 
+      <code>remove_reference_t&lt;F<sub>i</sub>&gt;</code> 
+      for each <code>F<sub>i</sub></code> in
+      <code>Futures</code>. This function shall not participate in overload resolution unless 
+      for each <em>i</em> either <em><code>D<sub>i</sub></code></em> 
+      is a <code>shared_future&lt;<em>R<sub>i</sub></em>&gt;</code>
+      or <em><code>U<sub>i</sub></code></em> is a <code>future&lt;<em>R<sub>i</sub></em>&gt;</code>.
+    </li>
+  </ul>
+</dd>
+  </cxx-remarks>
+
+<cxx-effects para_num="5" id="futures.when_all.5">
+    
+    <dt>Effects:</dt><dd>
+
+<!-- M0when_all_effects -->
+
+  <ul>
+
+    <li>
+    A new shared state containing a <code>Sequence</code> is
+    created, where <code>Sequence</code> is either <code>vector</code> or
+    <code>tuple</code> based on the overload, as specified above.
+
+    A new <code>future</code> object that refers to that shared state is created
+    and returned from <code>when_all</code>.
+    </li>
+
+    <li>
+      If the first overload is called with <code>first == last</code>, <code>when_all</code>
+      returns a <code>future</code> with an empty <code>vector</code> that is immediately
+      ready.
+    </li>
+
+    <li>If the second overload is called with no arguments,
+    <code>when_all</code> returns a <code>future&lt;tuple&lt;&gt;&gt;</code> 
+    that is immediately ready.</li>
+
+    <li>
+      Otherwise, any <code>future</code>s are moved, and any <code>shared_future</code>s
+      are copied into, correspondingly, <code>future</code>s or 
+      <code>shared_future</code>s of 
+      <code>Sequence</code> in the shared state.
+    </li>
+
+    <li>
+      The order of the objects in the shared state matches the order
+      of the arguments supplied to <code>when_all</code>.
+    </li>
+    <li>
+      Once all the <code>future</code>s and <code>shared_future</code>s supplied
+      to the call to <code>when_all</code> are ready, the resulting <code>future</code>,
+      as well as the <code>future</code>s and <code>shared_future</code>s
+      of the <code>Sequence</code>, are ready.
+    </li>
+    <li>
+
+    </li>
+    <li>The shared state of the <code>future</code> returned by <code>when_all</code> 
+      will not store an exception, but the
+      shared states of <code>future</code>s and <code>shared_future</code>s held in the shared state may.</li>
+  </ul>
+</dd>
+  </cxx-effects>
+
+<cxx-postconditions para_num="6" id="futures.when_all.6">
+    
+    <dt>Postconditions:</dt><dd>
+  <ul>
+    <li>For the returned <code>future</code>, <code>valid() == true</code>.</li>
+    <li>For all input <code>future</code>s, <code>valid() == false</code>.</li>
+    <li>For all input <code>shared_future</code>s, <code>valid() == true</code>.</li>
+  </ul>
+</dd>
+  </cxx-postconditions>
+
+<cxx-returns para_num="7" id="futures.when_all.7">
+    
+    <dt>Returns:</dt><dd>
+
+A <code>future</code> object that becomes ready when all of the input
+<code>future</code>sand <code>shared_future</code>s are ready.
+
+</dd>
+  </cxx-returns>
+
+    </dl>
+  </cxx-function>
+
+    </section>
+  </cxx-section>
+
+<!--             -->
+<!-- M00when_any -->
+<!--             -->
+
+<cxx-section id="futures.when_any_result">
+    
+
+    <section>
+      <header><span class="section-number">2.8</span> <h1 data-bookmark-label="2.8  Class template when_any_result"> Class template <code>when_any_result</code></h1> <span style="float:right"><a href="#futures.when_any_result">[futures.when_any_result]</a></span></header>
+      
+
+
+<p para_num="1" id="futures.when_any_result.1">
+The library provides a template for storing the result of <code>when_any</code>.
+</p>
+
+<pre><code>
+template&lt;class Sequence&gt;
+struct when_any_result {
+    size_t index;
+    Sequence futures;
+};
+</code></pre>
+
+
+    </section>
+  </cxx-section>
+
+<cxx-section id="futures.when_any">
+    
+
+    <section>
+      <header><span class="section-number">2.9</span> <h1 data-bookmark-label="2.9  Function template when_any"> Function template <code>when_any</code></h1> <span style="float:right"><a href="#futures.when_any">[futures.when_any]</a></span></header>
+      
+
+
+<p para_num="1" id="futures.when_any.1">
+The function template <code>when_any</code> creates a <code>future</code> object that
+becomes ready when at least one element in a set of <code>future</code> and <code>shared_future</code> objects
+becomes ready.
+</p>
+
+<cxx-function para_num="2" id="futures.when_any.2">
+    
+    <pre><code><cxx-signature>
+template &lt;class InputIterator&gt;
+future&lt;when_any_result&lt;vector&lt;typename iterator_traits&lt;InputIterator&gt;::value_type&gt;&gt;&gt;
+when_any(InputIterator first, InputIterator last);
+
+template &lt;class... Futures&gt;
+future&lt;when_any_result&lt;tuple&lt;decay_t&lt;Futures&gt;...&gt;&gt;&gt; when_any(Futures&amp;&amp;... futures);
+</cxx-signature></code></pre>
+
+    <dl>
+      
+
+
+<cxx-requires para_num="3" id="futures.when_any.3">
+    
+    <dt>Requires:</dt><dd>
+  
+
+  All <code>future</code>s and <code>shared_future</code>s passed into 
+  <code>when_all</code> must be in a valid state (i.e. <code>valid() == true</code>).
+</dd>
+  </cxx-requires>
+
+<cxx-remarks para_num="4" id="futures.when_any.4">
+    
+    <dt>Remarks:</dt><dd>
+  <ul>
+    <li>
+      
+      The first overload shall not participate in overload resolution unless <code>iterator_traits&lt;InputIterator&gt;::value_type</code> is <code>future&lt;R&gt;</code>
+      or <code>shared_future&lt;R&gt;</code> for some type <code>R</code>.
+      
+    </li>
+    <li>
+      For the second overload, let <em><code>D<sub>i</sub></code></em> be 
+      <code>decay_t&lt;F<sub>i</sub>&gt;</code>, and
+      let <em><code>U<sub>i</sub></code></em> be 
+      <code>remove_reference_t&lt;F<sub>i</sub>&gt;</code> 
+      for each <code>F<sub>i</sub></code> in
+      <code>Futures</code>. This function shall not participate in overload resolution unless 
+      for each <em>i</em> either <em><code>D<sub>i</sub></code></em> 
+      is a <code>shared_future&lt;<em>R<sub>i</sub></em>&gt;</code>
+      or <em><code>U<sub>i</sub></code></em> is a <code>future&lt;<em>R<sub>i</sub></em>&gt;</code>.
+    </li>
+  </ul>
+</dd>
+  </cxx-remarks>
+
+<cxx-effects para_num="5" id="futures.when_any.5">
+    
+    <dt>Effects:</dt><dd>
+
+<!-- M0when_any_effects -->
+
+  <ul>
+
+    <li>
+    A new shared state containing <code>when_any_result&lt;Sequence&gt;</code> is created,
+    where <code>Sequence</code> is a <code>vector</code> for the first overload and a
+    <code>tuple</code> for the second overload.
+
+    A new <code>future</code> object that refers to that shared state is created and returned
+    from <code>when_any</code>.
+    </li>
+
+    <li>
+      If the first overload is called with <code>first == last</code>,
+      <code>when_any</code> returns a <code>future</code> that is immediately ready.
+      The value of the <code>index</code> field of the <code>when_any_result</code> is
+      <code>static_cast&lt;size_t&gt;(-1)</code>. The <code>futures</code> field is an empty <code>vector</code>.
+    </li>
+
+    <li>If the second overload of is called with no arguments,
+      <code>when_any</code> returns a <code>future</code> that is immediately ready.
+      The value of the <code>index</code> field of the <code>when_any_result</code> is
+      <code>static_cast&lt;size_t&gt;(-1)</code>. 
+      The <code>futures</code> field is <code>tuple&lt;&gt;</code>.
+    </li>
+
+    <li>
+      Otherwise, any <code>future</code>s are moved, and any <code>shared_future</code>s
+      are copied into, correspondingly, <code>future</code>s or 
+      <code>shared_future</code>s of the <code>futures</code> member of 
+      <code>when_any_result&lt;Sequence&gt;</code> in the shared state.
+
+    </li>
+    <li>
+      The order of the objects in the <code>futures</code> shared state matches the order
+      of the arguments supplied to <code>when_any</code>. 
+    </li>
+    <li>
+
+      Once at least one of the <code>future</code>s or <code>shared_future</code>s supplied
+      to the call to <code>when_any</code> is ready, the resulting <code>future</code>
+      is ready.
+
+      Given the result future <code>f</code>,
+      <code>f.get().index</code> is the position of the ready <code>future</code> 
+      or <code>shared_future</code> in the
+      <code>futures</code> member of 
+      <code>when_any_result&lt;Sequence&gt;</code> in the shared state.
+
+    </li>
+
+    <li>The shared state of the <code>future</code> returned by <code>when_all</code> 
+      will not store an exception, but the
+      shared states of <code>future</code>s and <code>shared_future</code>s held in the shared state may.</li>
+    
+  </ul>
+</dd>
+  </cxx-effects>
+
+<cxx-postconditions para_num="6" id="futures.when_any.6">
+    
+    <dt>Postconditions:</dt><dd>
+  <ul>
+    <li>For the returned <code>future</code>, <code>valid() == true</code>.</li>
+    <li>For all input <code>future</code>s, <code>valid() == false</code>.</li>
+    <li>For all input <code>shared_future</code>s, <code>valid() == true</code>.</li>
+  </ul>
+</dd>
+  </cxx-postconditions>
+
+<cxx-returns para_num="7" id="futures.when_any.7">
+    
+    <dt>Returns:</dt><dd>
+<ul>
+  <li>A <code>future</code> object that becomes ready when any of the input
+    <code>future</code>s and <code>shared_future</code>s are ready.
+  </li>
+</ul>
+</dd>
+  </cxx-returns>
+
+
+    </dl>
+  </cxx-function>
+
+    </section>
+  </cxx-section>
+
+<cxx-section id="futures.make_ready_future">
+    
+
+    <section>
+      <header><span class="section-number">2.10</span> <h1 data-bookmark-label="2.10  Function template make_ready_future"> Function template <code>make_ready_future</code></h1> <span style="float:right"><a href="#futures.make_ready_future">[futures.make_ready_future]</a></span></header>
+      
+
+
+
+<cxx-function para_num="1" id="futures.make_ready_future.1">
+    
+    <pre><code><cxx-signature>
+template &lt;class T&gt;
+future&lt;V&gt; make_ready_future(T&amp;&amp; value);
+
+future&lt;void&gt; make_ready_future();
+  </cxx-signature></code></pre>
+
+    <dl>
+      
+  
+<p para_num="2" id="futures.make_ready_future.2">
+  Let <code>U</code> be <code>decay_t&lt;T&gt;</code>. Then <code>V</code> is <code>X&amp;</code> if <code>U</code> equals
+  <code>reference_wrapper&lt;X&gt;</code>, otherwise <code>V</code> is <code>U</code>.
+</p>
+  <cxx-effects para_num="3" id="futures.make_ready_future.3">
+    
+    <dt>Effects:</dt><dd>
+    The function creates a shared state
+      that is immediately ready and returns a <code>future</code> associated 
+      with that shared state.
+      For the first overload, the type of the shared state is <code>V</code> and the result is
+      constructed from <code>std::forward&lt;T&gt;(value)</code>.
+      For the second overload, the type of the shared state is <code>void</code>.
+    
+
+  </dd>
+  </cxx-effects>
+
+
+  <cxx-postconditions para_num="4" id="futures.make_ready_future.4">
+    
+    <dt>Postconditions:</dt><dd>
+      For the returned <code>future, valid() == true</code> and <code>is_ready() == true</code>.
+  </dd>
+  </cxx-postconditions>
+
+    </dl>
+  </cxx-function>
+
+    </section>
+  </cxx-section>
+
+<cxx-section id="futures.make_exceptional_future">
+    
+
+    <section>
+      <header><span class="section-number">2.11</span> <h1 data-bookmark-label="2.11 Function template make_exceptional_future">Function template <code>make_exceptional_future</code></h1> <span style="float:right"><a href="#futures.make_exceptional_future">[futures.make_exceptional_future]</a></span></header>
+      
+
+
+
+<cxx-function para_num="1" id="futures.make_exceptional_future.1">
+    
+    <pre><code><cxx-signature>
+template &lt;class T&gt;
+future&lt;T&gt; make_exceptional_future(exception_ptr ex);
+</cxx-signature></code></pre>
+
+    <dl>
+      
+  
+
+  <cxx-effects para_num="2" id="futures.make_exceptional_future.2">
+    
+    <dt>Effects:</dt><dd>Equivalent to
+  <cxx-codeblock>
+    
+    <pre><code>promise&lt;T&gt; p;
+p.set_exception(ex);
+return p.get_future();</code></pre>
+  </cxx-codeblock>
+  </dd>
+  </cxx-effects>
+
+
+    </dl>
+  </cxx-function>
+<cxx-function para_num="3" id="futures.make_exceptional_future.3">
+    
+    <pre><code></code></pre>
+
+    <dl>
+      
+  <cxx-codeblock>
+    
+    <pre><code>template &lt;class T, class E&gt;
+future&lt;T&gt; make_exceptional_future(E ex);</code></pre>
+  </cxx-codeblock>
+
+  <cxx-effects para_num="4" id="futures.make_exceptional_future.4">
+    
+    <dt>Effects:</dt><dd>Equivalent to
+  <cxx-codeblock>
+    
+    <pre><code>promise&lt;T&gt; p;
+p.set_exception(make_exception_ptr(ex));
+return p.get_future();</code></pre>
+  </cxx-codeblock>
+  </dd>
+  </cxx-effects>
+
+
+    </dl>
+  </cxx-function>
+
+    </section>
+  </cxx-section>
+
+
+
+
+    </section>
+  </cxx-clause>
+
+<cxx-clause id="coordination">
+    
+
+    <section>
+      <header><span class="section-number">3</span> <h1 data-bookmark-label="3 Latches and Barriers">Latches and Barriers</h1> <span style="float:right"><a href="#coordination">[coordination]</a></span></header>
+      
+
+
+<cxx-section id="coordination.general">
+    
+
+    <section>
+      <header><span class="section-number">3.1</span> <h1 data-bookmark-label="3.1 General">General</h1> <span style="float:right"><a href="#coordination.general">[coordination.general]</a></span></header>
+      
+
+<p para_num="1" id="coordination.general.1">
+This section describes various concepts related to thread coordination, and defines the <code>latch</code>, <code>barrier</code> and <code>flex_barrier</code> classes.
+</p>
+<cxx-ednote>
+    
+    <aside><strong>Editor's note:</strong> 
+This section uses the term 'thread' throughout. Where relevant, it should be updated to refer to execution agents when these are adopted in the standard. See N4231 and N4156.
+</aside>
+  </cxx-ednote>
+
+
+    </section>
+  </cxx-section>
+
+<cxx-section id="thread.coordination.terminology">
+    
+
+    <section>
+      <header><span class="section-number">3.2</span> <h1 data-bookmark-label="3.2 Terminology">Terminology</h1> <span style="float:right"><a href="#thread.coordination.terminology">[thread.coordination.terminology]</a></span></header>
+      
+
+<p para_num="1" id="thread.coordination.terminology.1">
+In this subclause, a <em>synchronization point</em> represents a point at which a thread may block until a given condition has been reached.
+</p>
+
+    </section>
+  </cxx-section>
+
+<cxx-section id="thread.coordination.latch">
+    
+
+    <section>
+      <header><span class="section-number">3.3</span> <h1 data-bookmark-label="3.3 Latches">Latches</h1> <span style="float:right"><a href="#thread.coordination.latch">[thread.coordination.latch]</a></span></header>
+      
+
+<p para_num="1" id="thread.coordination.latch.1">
+Latches are a thread coordination mechanism that allow one or more threads to block until an operation is completed. An individual latch is a single-use object; once the operation has been completed, the latch cannot be reused.
+</p>
+
+    </section>
+  </cxx-section>
+
+<cxx-section id="thread.coordination.latch.synopsis">
+    
+
+    <section>
+      <header><span class="section-number">3.4</span> <h1 data-bookmark-label="3.4 Header <experimental/latch> synopsis">Header &lt;experimental/latch&gt; synopsis</h1> <span style="float:right"><a href="#thread.coordination.latch.synopsis">[thread.coordination.latch.synopsis]</a></span></header>
+      
+
+<pre><code>
+namespace std {
+namespace experimental {
+inline namespace concurrency_v1 {
+  class latch {
+   public:
+    explicit latch(ptrdiff_t count);
+    latch(const latch&amp;) = delete;
+    
+    latch&amp; operator=(const latch&amp;) = delete;
+    ~latch();
+
+    
+    void count_down_and_wait();
+    void count_down(ptrdiff_t n);
+
+    bool is_ready() const noexcept;
+    void wait() const;
+
+   private:
+    ptrdiff_t counter_; // <em>exposition only</em>
+  };
+} // namespace concurrency_v1
+} // namespace experimental
+} // namespace std
+</code></pre>
+
+    </section>
+  </cxx-section>
+
+<cxx-section id="coordination.latch.class">
+    
+
+    <section>
+      <header><span class="section-number">3.5</span> <h1 data-bookmark-label="3.5 Class latch">Class <code>latch</code></h1> <span style="float:right"><a href="#coordination.latch.class">[coordination.latch.class]</a></span></header>
+      
+
+<p para_num="1" id="coordination.latch.class.1">
+A latch maintains an internal <code>counter_</code> that is initialized when the latch is created. Threads may block at a synchronization point waiting for <code>counter_</code> to be decremented to <code>0</code>. When <code>counter_</code> reaches <code>0</code>, all such blocked threads are released.
+</p>
+<p para_num="2" id="coordination.latch.class.2">
+Calls to <code>count_down_and_wait()</code>, <code>count_down()</code>, <code>wait()</code>, and <code>is_ready()</code> behave as atomic operations.
+</p>
+
+<cxx-function para_num="3" id="coordination.latch.class.3">
+    
+    <pre><code><cxx-signature>explicit latch(ptrdiff_t count);</cxx-signature></code></pre>
+
+    <dl>
+      
+  
+  <cxx-requires para_num="4" id="coordination.latch.class.4">
+    
+    <dt>Requires:</dt><dd><code>count &gt;= 0.</code></dd>
+  </cxx-requires>
+  <cxx-synchronization para_num="5" id="coordination.latch.class.5">
+    
+    <dt>Synchronization:</dt><dd>None.</dd>
+  </cxx-synchronization>
+  <cxx-postconditions para_num="6" id="coordination.latch.class.6">
+    
+    <dt>Postconditions:</dt><dd><code>counter_ == count</code>.</dd>
+  </cxx-postconditions>
+
+    </dl>
+  </cxx-function>
+
+<cxx-function para_num="7" id="coordination.latch.class.7">
+    
+    <pre><code><cxx-signature>~latch();</cxx-signature></code></pre>
+
+    <dl>
+      
+  
+  <cxx-requires para_num="8" id="coordination.latch.class.8">
+    
+    <dt>Requires:</dt><dd>No threads are blocked at the synchronization point.</dd>
+  </cxx-requires>
+  <cxx-remarks para_num="9" id="coordination.latch.class.9">
+    
+    <dt>Remarks:</dt><dd>May be called even if some threads have not yet returned from <code>wait()</code> or <code>count_down_and_wait()</code> provided that <code>counter_</code> is <code>0</code>. <cxx-note><span class="nowrap">[ <em>Note:</em></span>
+    The destructor might not return until all threads have exited <code>wait()</code> or <code>count_down_and_wait()</code>.
+    <span class="nowrap">— <em>end note</em> ]</span>
+  </cxx-note></dd>
+  </cxx-remarks>
+
+    </dl>
+  </cxx-function>
+
+<cxx-function para_num="10" id="coordination.latch.class.10">
+    
+    <pre><code><cxx-signature>void count_down_and_wait();</cxx-signature></code></pre>
+
+    <dl>
+      
+  
+  <cxx-requires para_num="11" id="coordination.latch.class.11">
+    
+    <dt>Requires:</dt><dd><code>counter_ &gt; 0.</code></dd>
+  </cxx-requires>
+  <cxx-effects para_num="12" id="coordination.latch.class.12">
+    
+    <dt>Effects:</dt><dd>Decrements <code>counter_</code> by <code>1</code>. Blocks at the synchronization point until <code>counter_</code> reaches <code>0</code>. </dd>
+  </cxx-effects>
+  <cxx-synchronization para_num="13" id="coordination.latch.class.13">
+    
+    <dt>Synchronization:</dt><dd>Synchronizes with all calls that block on this latch and with all <code>is_ready</code> calls on this latch that return true.</dd>
+  </cxx-synchronization>
+  <cxx-throws para_num="14" id="coordination.latch.class.14">
+    
+    <dt>Throws:</dt><dd>Nothing.</dd>
+  </cxx-throws>
+
+    </dl>
+  </cxx-function>
+
+<cxx-function para_num="15" id="coordination.latch.class.15">
+    
+    <pre><code><cxx-signature>void count_down(ptrdiff_t n);</cxx-signature></code></pre>
+
+    <dl>
+      
+  
+  <cxx-requires para_num="16" id="coordination.latch.class.16">
+    
+    <dt>Requires:</dt><dd><code>counter_ &gt;= n</code> and <code>n &gt;= 0</code>.</dd>
+  </cxx-requires>
+  <cxx-effects para_num="17" id="coordination.latch.class.17">
+    
+    <dt>Effects:</dt><dd>Decrements <code>counter_</code> by <code>n</code>. Does not block.</dd>
+  </cxx-effects>
+  <cxx-synchronization para_num="18" id="coordination.latch.class.18">
+    
+    <dt>Synchronization:</dt><dd>Synchronizes with all calls that block on this latch and with all <code>is_ready</code> calls on this latch that return true.</dd>
+  </cxx-synchronization>
+  <cxx-throws para_num="19" id="coordination.latch.class.19">
+    
+    <dt>Throws:</dt><dd>Nothing.</dd>
+  </cxx-throws>
+
+    </dl>
+  </cxx-function>
+
+<cxx-function para_num="20" id="coordination.latch.class.20">
+    
+    <pre><code><cxx-signature>void wait() const;</cxx-signature></code></pre>
+
+    <dl>
+      
+  
+  <cxx-effects para_num="21" id="coordination.latch.class.21">
+    
+    <dt>Effects:</dt><dd>If <code>counter_</code> is <code>0</code>, returns immediately. Otherwise, blocks the calling thread at the synchronization point until <code>counter_</code> reaches <code>0</code>.</dd>
+  </cxx-effects>
+  <cxx-throws para_num="22" id="coordination.latch.class.22">
+    
+    <dt>Throws:</dt><dd>Nothing.</dd>
+  </cxx-throws>
+  <cxx-ednote>
+    
+    <aside><strong>Editor's note:</strong> SG1 seems to have a convention that blocking functions are never marked noexcept (e.g. future::wait) even if they never throw. LWG requests that SG1 check whether this pattern is intended, and update the noexcept clauses here accordingly.</aside>
+  </cxx-ednote>
+
+    </dl>
+  </cxx-function>
+
+<cxx-function para_num="23" id="coordination.latch.class.23">
+    
+    <pre><code><cxx-signature>is_ready() const noexcept;</cxx-signature></code></pre>
+
+    <dl>
+      
+  
+  <cxx-returns para_num="24" id="coordination.latch.class.24">
+    
+    <dt>Returns:</dt><dd><code>counter_ == 0</code>. Does not block.</dd>
+  </cxx-returns>
+
+    </dl>
+  </cxx-function>
+
+    </section>
+  </cxx-section>
+
+<cxx-section id="thread.coordination.barrier">
+    
+
+    <section>
+      <header><span class="section-number">3.6</span> <h1 data-bookmark-label="3.6 Barrier types">Barrier types</h1> <span style="float:right"><a href="#thread.coordination.barrier">[thread.coordination.barrier]</a></span></header>
+      
+
+<p para_num="1" id="thread.coordination.barrier.1">
+Barriers are a thread coordination mechanism that allow a <em>set of participating threads</em> to block until an operation is completed. Unlike a latch, a barrier is reusable: once the participating threads are released from a barrier's synchronization point, they can re-use the same barrier. It is thus useful for managing repeated tasks, or phases of a larger task, that are handled by multiple threads.
+</p>
+<p para_num="2" id="thread.coordination.barrier.2">
+The <em>barrier types</em> are the standard library types <code>barrier</code> and <code>flex_barrier</code>. They shall meet the requirements set out in this subclause. In this description, <code>b</code> denotes an object of a barrier type.
+</p>
+<p para_num="3" id="thread.coordination.barrier.3">
+Each barrier type defines a <em>completion phase</em> as a (possibly empty) set of effects. When the member functions defined in this subclause <em>arrive at the barrier's synchronization point</em>, they have the following effects: 
+</p>
+<ol>
+<li>
+The function blocks.
+</li>
+<li>
+When all threads in the barrier's set of participating threads are blocked at its synchronization point, one participating thread is unblocked and executes the barrier type's completion phase.
+</li>
+<li>
+When the completion phase is completed, all other participating threads are unblocked. The end of the completion phase synchronizes with the returns from all calls unblocked by its completion.
+</li>
+</ol>
+<p para_num="4" id="thread.coordination.barrier.4">
+The expression <code>b.arrive_and_wait()</code> shall be well-formed and have the following semantics:
+</p>
+<cxx-function para_num="5" id="thread.coordination.barrier.5">
+    
+    <pre><code><cxx-signature>void arrive_and_wait();</cxx-signature></code></pre>
+
+    <dl>
+      
+  
+  <cxx-requires para_num="6" id="thread.coordination.barrier.6">
+    
+    <dt>Requires:</dt><dd>The current thread is a member of the set of participating threads.</dd>
+  </cxx-requires>
+  <cxx-effects para_num="7" id="thread.coordination.barrier.7">
+    
+    <dt>Effects:</dt><dd>Arrives at the barrier's synchronization point. <cxx-note><span class="nowrap">[ <em>Note:</em></span>
+    It is safe for a thread to call <code>arrive_and_wait()</code> or <code>arrive_and_drop()</code> again immediately. It is not necessary to ensure that all blocked threads have exited <code>arrive_and_wait()</code> before one thread calls it again.
+    <span class="nowrap">— <em>end note</em> ]</span>
+  </cxx-note></dd>
+  </cxx-effects>
+  <cxx-synchronization para_num="8" id="thread.coordination.barrier.8">
+    
+    <dt>Synchronization:</dt><dd>The call to <code>arrive_and_wait()</code> synchronizes with the start of the completion phase.</dd>
+  </cxx-synchronization>
+  <cxx-throws para_num="9" id="thread.coordination.barrier.9">
+    
+    <dt>Throws:</dt><dd>Nothing.</dd>
+  </cxx-throws>
+
+    </dl>
+  </cxx-function>
+<p para_num="10" id="thread.coordination.barrier.10">
+The expression <code>b.arrive_and_drop()</code> shall be well-formed and have the following semantics:
+</p>
+<cxx-function para_num="11" id="thread.coordination.barrier.11">
+    
+    <pre><code><cxx-signature>void arrive_and_drop();</cxx-signature></code></pre>
+
+    <dl>
+      
+  
+  <cxx-requires para_num="12" id="thread.coordination.barrier.12">
+    
+    <dt>Requires:</dt><dd>The current thread is a member of the set of participating threads.</dd>
+  </cxx-requires>
+  <cxx-effects para_num="13" id="thread.coordination.barrier.13">
+    
+    <dt>Effects:</dt><dd>Either arrives at the barrier's synchronization point and then removes the current thread from the set of participating threads, or just removes the current thread from the set of participating threads. <cxx-note><span class="nowrap">[ <em>Note:</em></span>
+    Removing the current thread from the set of participating threads can cause the completion phase to start. 
+    <span class="nowrap">— <em>end note</em> ]</span>
+  </cxx-note></dd>
+  </cxx-effects>
+  <cxx-synchronization para_num="14" id="thread.coordination.barrier.14">
+    
+    <dt>Synchronization:</dt><dd>The call to <code>arrive_and_drop()</code> synchronizes with the start of the completion phase.</dd>
+  </cxx-synchronization>
+  <cxx-throws para_num="15" id="thread.coordination.barrier.15">
+    
+    <dt>Throws:</dt><dd>Nothing.</dd>
+  </cxx-throws>
+  <cxx-notes para_num="16" id="thread.coordination.barrier.16">
+    
+    <dt>Notes:</dt><dd>If all participating threads call <code>arrive_and_drop()</code>, any further operations on the barrier are undefined, apart from calling the destructor.
+If a thread that has called <code>arrive_and_drop()</code> calls another method on the same barrier, other than the destructor, the results are undefined.</dd>
+  </cxx-notes>
+
+    </dl>
+  </cxx-function>
+<p para_num="17" id="thread.coordination.barrier.17">
+Calls to <code>arrive_and_wait()</code> and <code>arrive_and_drop()</code> never introduce data races with themselves or each other.
+</p>
+
+    </section>
+  </cxx-section>
+
+<cxx-section id="thread.coordination.barrier.synopsis">
+    
+
+    <section>
+      <header><span class="section-number">3.7</span> <h1 data-bookmark-label="3.7 Header <experimental/barrier> synopsis">Header &lt;experimental/barrier&gt; synopsis</h1> <span style="float:right"><a href="#thread.coordination.barrier.synopsis">[thread.coordination.barrier.synopsis]</a></span></header>
+      
+
+<pre><code>
+namespace std {
+namespace experimental {
+inline namespace concurrency_v1 {
+  class barrier;
+  class flex_barrier;
+} // namespace concurrency_v1
+} // namespace experimental
+} // namespace std
+</code></pre>
+
+    </section>
+  </cxx-section>
+
+<cxx-section id="coordination.barrier.class">
+    
+
+    <section>
+      <header><span class="section-number">3.8</span> <h1 data-bookmark-label="3.8 Class barrier">Class <code>barrier</code></h1> <span style="float:right"><a href="#coordination.barrier.class">[coordination.barrier.class]</a></span></header>
+      
+
+<p para_num="1" id="coordination.barrier.class.1">
+<code>barrier</code> is a barrier type whose completion phase has no effects. Its constructor takes a parameter representing the initial size of its set of participating threads.
+</p>
+
+<pre><code>
+class barrier {
+ public:
+  explicit barrier(ptrdiff_t num_threads);
+  barrier(const barrier&amp;) = delete;
+  
+  barrier&amp; operator=(const barrier&amp;) = delete;
+  ~barrier();
+  
+  
+
+  void arrive_and_wait();
+  void arrive_and_drop();
+};
+</code></pre>
+
+<cxx-function para_num="2" id="coordination.barrier.class.2">
+    
+    <pre><code><cxx-signature>explicit barrier(ptrdiff_t num_threads);</cxx-signature></code></pre>
+
+    <dl>
+      
+  
+  <cxx-requires para_num="3" id="coordination.barrier.class.3">
+    
+    <dt>Requires:</dt><dd><code>num_threads &gt;= 0.</code> <cxx-note><span class="nowrap">[ <em>Note:</em></span>
+    If <code>num_threads</code> is zero, the barrier may only be destroyed.
+    <span class="nowrap">— <em>end note</em> ]</span>
+  </cxx-note></dd>
+  </cxx-requires>
+  <cxx-effects para_num="4" id="coordination.barrier.class.4">
+    
+    <dt>Effects:</dt><dd>Initializes the barrier for <code>num_threads</code> participating threads. <cxx-note><span class="nowrap">[ <em>Note:</em></span>
+    The set of participating threads is the first <code>num_threads</code> threads to arrive at the synchronization point.
+    <span class="nowrap">— <em>end note</em> ]</span>
+  </cxx-note></dd>
+  </cxx-effects>
+
+    </dl>
+  </cxx-function>
+
+<cxx-function para_num="5" id="coordination.barrier.class.5">
+    
+    <pre><code><cxx-signature>~barrier();</cxx-signature></code></pre>
+
+    <dl>
+      
+  
+  <cxx-requires para_num="6" id="coordination.barrier.class.6">
+    
+    <dt>Requires:</dt><dd>No threads are blocked at the synchronization point.</dd>
+  </cxx-requires>
+  <cxx-effects para_num="7" id="coordination.barrier.class.7">
+    
+    <dt>Effects:</dt><dd>Destroys the barrier.</dd>
+  </cxx-effects>
+
+    </dl>
+  </cxx-function>
+
+
+    </section>
+  </cxx-section>
+
+<cxx-section id="coordination.flexbarrier.class">
+    
+
+    <section>
+      <header><span class="section-number">3.9</span> <h1 data-bookmark-label="3.9 Class flex_barrier">Class <code>flex_barrier</code></h1> <span style="float:right"><a href="#coordination.flexbarrier.class">[coordination.flexbarrier.class]</a></span></header>
+      
+
+<p para_num="1" id="coordination.flexbarrier.class.1">
+<code>flex_barrier</code> is a barrier type whose completion phase can be controlled 
+by a  function object.
+</p>
+
+<pre><code>
+class flex_barrier {
+ public:
+  template &lt;class F&gt;
+    flex_barrier(ptrdiff_t num_threads, F completion);
+  explicit flex_barrier(ptrdiff_t num_threads);
+  flex_barrier(const flex_barrier&amp;) = delete;
+  flex_barrier&amp; operator=(const flex_barrier&amp;) = delete;
+
+  ~flex_barrier();
+
+  void arrive_and_wait();
+  void arrive_and_drop();
+
+ private:
+  function&lt;ptrdiff_t()&gt; completion_;  // <em>exposition only</em>
+};
+
+</code></pre>
+<p para_num="2" id="coordination.flexbarrier.class.2">
+The completion phase calls <code>completion_()</code>. If this returns <code>-1</code>, then the set of participating threads is unchanged. Otherwise, the set of participating threads becomes a new set with a size equal to the returned value. <cxx-note><span class="nowrap">[ <em>Note:</em></span>
+    If <code>completion_()</code> returns <code>0</code> then the set of participating threads becomes empty, and this object may only be destroyed.
+    <span class="nowrap">— <em>end note</em> ]</span>
+  </cxx-note>
+</p>
+<cxx-function para_num="3" id="coordination.flexbarrier.class.3">
+    
+    <pre><code><cxx-signature>
+template &lt;class F&gt;
+flex_barrier(ptrdiff_t num_threads, F completion);
+  </cxx-signature></code></pre>
+
+    <dl>
+      
+  
+  <cxx-requires para_num="4" id="coordination.flexbarrier.class.4">
+    
+    <dt>Requires:</dt><dd>
+  <ul>
+    <li>
+    <code>num_threads &gt;= 0.</code>
+    </li><li>
+    <code>F</code> shall be <code>CopyConstructible</code>.
+    </li><li>
+    <code>completion</code> shall be Callable (C++14 §[func.wrap.func]) with no arguments and return type  <code>ptrdiff_t</code>.
+    </li><li>
+    Invoking <code>completion</code> shall return a value greater than or equal to <code>-1</code> and shall not exit via an exception.
+    </li>
+  </ul></dd>
+  </cxx-requires>
+
+
+  
+  <cxx-effects para_num="5" id="coordination.flexbarrier.class.5">
+    
+    <dt>Effects:</dt><dd>
+  Initializes the <code>flex_barrier</code> for <code>num_threads</code> participating threads,
+  and initializes <code>completion_</code> with <code>std::move(completion)</code>.
+  <cxx-note><span class="nowrap">[ <em>Note:</em></span>
+    The set of participating threads consists of the first <code>num_threads</code> threads to arrive at the
+  synchronization point.
+    <span class="nowrap">— <em>end note</em> ]</span>
+  </cxx-note>
+  <cxx-note><span class="nowrap">[ <em>Note:</em></span>
+    If <code>num_threads</code> is <code>0</code> the set of participating threads is empty, and this object may only be destroyed.
+    <span class="nowrap">— <em>end note</em> ]</span>
+  </cxx-note>
+  </dd>
+  </cxx-effects>
+
+
+    </dl>
+  </cxx-function>
+
+<cxx-function para_num="6" id="coordination.flexbarrier.class.6">
+    
+    <pre><code><cxx-signature>explicit flex_barrier(ptrdiff_t num_threads);</cxx-signature></code></pre>
+
+    <dl>
+      
+  
+  
+  <cxx-requires para_num="7" id="coordination.flexbarrier.class.7">
+    
+    <dt>Requires:</dt><dd><code>num_threads &gt;= 0.</code></dd>
+  </cxx-requires>
+  <cxx-effects para_num="8" id="coordination.flexbarrier.class.8">
+    
+    <dt>Effects:</dt><dd>Has the same effect as creating a <code>flex_barrier</code> with <code>num_threads</code> and with a callable object whose invocation returns <code>-1</code> and has no side effects.</dd>
+  </cxx-effects>
+
+    </dl>
+  </cxx-function>
+
+<cxx-function para_num="9" id="coordination.flexbarrier.class.9">
+    
+    <pre><code><cxx-signature>~flex_barrier();</cxx-signature></code></pre>
+
+    <dl>
+      
+  
+  <cxx-requires para_num="10" id="coordination.flexbarrier.class.10">
+    
+    <dt>Requires:</dt><dd>No threads are blocked at the synchronization point.</dd>
+  </cxx-requires>
+  <cxx-effects para_num="11" id="coordination.flexbarrier.class.11">
+    
+    <dt>Effects:</dt><dd>Destroys the barrier.</dd>
+  </cxx-effects>
+
+    </dl>
+  </cxx-function>
+
+
+    </section>
+  </cxx-section>
+
+<!-- End clause id="coordination" -->
+
+    </section>
+  </cxx-clause>
+
+<cxx-clause id="atomic">
+    
+
+    <section>
+      <header><span class="section-number">4</span> <h1 data-bookmark-label="4 Atomic Smart Pointers">Atomic Smart Pointers</h1> <span style="float:right"><a href="#atomic">[atomic]</a></span></header>
+      
+
+
+<cxx-section id="atomic.smartptr.general">
+    
+
+    <section>
+      <header><span class="section-number">4.1</span> <h1 data-bookmark-label="4.1 General">General</h1> <span style="float:right"><a href="#atomic.smartptr.general">[atomic.smartptr.general]</a></span></header>
+      
+
+<p para_num="1" id="atomic.smartptr.general.1">
+
+This section provides alternatives to raw pointers for thread-safe atomic 
+pointer operations, and defines the <code>atomic_shared_ptr</code> and 
+<code>atomic_weak_ptr</code> class templates.
+
+</p>
+<p para_num="2" id="atomic.smartptr.general.2">
+
+The class templates <code>atomic_shared_ptr&lt;T&gt;</code> and 
+<code>atomic_weak_ptr&lt;T&gt;</code> have the 
+corresponding non-atomic types <code>shared_ptr&lt;T&gt;</code> and 
+<code>weak_ptr&lt;T&gt;</code>. The template parameter <code>T</code> of 
+these class templates may be an incomplete type.
+
+</p>
+<p para_num="3" id="atomic.smartptr.general.3">
+
+The behavior of all operations is as specified in
+<cxx-ref in="cxx" to="atomics.types.operations.req">C++14 <span title="atomics.types.operations.req">§29.6.5</span></cxx-ref>, 
+unless stated otherwise.
+
+</p>
+
+
+    </section>
+  </cxx-section>
+
+<cxx-section id="atomic.smartptr.synop">
+    
+
+    <section>
+      <header><span class="section-number">4.2</span> <h1 data-bookmark-label="4.2 Header <experimental/atomic> synopsis">Header &lt;experimental/atomic&gt; synopsis</h1> <span style="float:right"><a href="#atomic.smartptr.synop">[atomic.smartptr.synop]</a></span></header>
+      
+
+
+<pre><code>
+#include &lt;atomic&gt;
+
+
+namespace std {
+namespace experimental {
+inline namespace concurrency_v1 {
+
+  template &lt;class T&gt; struct atomic_shared_ptr;
+  template &lt;class T&gt; struct atomic_weak_ptr;
+
+} // namespace concurrency_v1
+} // namespace experimental
+} // namespace st
+
+
+</code></pre>
+
+
+    </section>
+  </cxx-section>
+
+<cxx-section id="atomic.shared_ptr">
+    
+
+    <section>
+      <header><span class="section-number">4.3</span> <h1 data-bookmark-label="4.3 Class template atomic_shared_ptr">Class template <code>atomic_shared_ptr</code></h1> <span style="float:right"><a href="#atomic.shared_ptr">[atomic.shared_ptr]</a></span></header>
+      
+
+
+<pre><code>
+namespace std {
+  namespace experimental {
+  inline namespace concurrency_v1 {
+
+  template &lt;class T&gt; struct atomic_shared_ptr {
+    bool is_lock_free() const noexcept;
+    void store(shared_ptr&lt;T&gt;, memory_order = memory_order_seq_cst) noexcept;
+    shared_ptr&lt;T&gt; load(memory_order = memory_order_seq_cst) const noexcept;
+    operator shared_ptr&lt;T&gt;() const noexcept;
+    
+    shared_ptr&lt;T&gt; exchange(shared_ptr&lt;T&gt;, 
+      memory_order = memory_order_seq_cst) noexcept;
+    
+    bool compare_exchange_weak(shared_ptr&lt;T&gt;&amp;, const shared_ptr&lt;T&gt;&amp;,
+      memory_order, memory_order) noexcept;
+    bool compare_exchange_weak(shared_ptr&lt;T&gt;&amp;, shared_ptr&lt;T&gt;&amp;&amp;, 
+      memory_order,  memory_order) noexcept;
+    bool compare_exchange_weak(shared_ptr&lt;T&gt;&amp;, const shared_ptr&lt;T&gt;&amp;,
+      memory_order = memory_order_seq_cst) noexcept;
+    bool compare_exchange_weak(shared_ptr&lt;T&gt;&amp;, shared_ptr&lt;T&gt;&amp;&amp;, 
+      memory_order = memory_order_seq_cst) noexcept;
+
+    bool compare_exchange_strong(shared_ptr&lt;T&gt;&amp;, const shared_ptr&lt;T&gt;&amp;,
+      memory_order, memory_order) noexcept;
+    bool compare_exchange_strong(shared_ptr&lt;T&gt;&amp;, shared_ptr&lt;T&gt;&amp;&amp;,
+      memory_order, memory_order) noexcept;
+    bool compare_exchange_strong(shared_ptr&lt;T&gt;&amp;, const shared_ptr&lt;T&gt;&amp;,
+      memory_order = memory_order_seq_cst) noexcept;
+    bool compare_exchange_strong(shared_ptr&lt;T&gt;&amp;, shared_ptr&lt;T&gt;&amp;&amp;, 
+      memory_order = memory_order_seq_cst) noexcept;
+
+    <code>constexpr</code> atomic_shared_ptr() noexcept = default;
+    atomic_shared_ptr(shared_ptr&lt;T&gt;) noexcept;
+    atomic_shared_ptr(const atomic_shared_ptr&amp;) = delete;
+    atomic_shared_ptr&amp; operator=(const atomic_shared_ptr&amp;) = delete;
+    atomic_shared_ptr&amp; operator=(shared_ptr&lt;T&gt;) noexcept;
+  };
+  } // namespace concurrency_v1
+  } // namespace experimental
+} // namespace std</code></pre>
+<br>
+<cxx-function para_num="1" id="atomic.shared_ptr.1">
+    
+    <pre><code><cxx-signature><code>constexpr</code> atomic_shared_ptr() noexcept = default;</cxx-signature></code></pre>
+
+    <dl>
+      
+  
+  <cxx-effects para_num="2" id="atomic.shared_ptr.2">
+    
+    <dt>Effects:</dt><dd>Initializes the atomic object to an empty value.</dd>
+  </cxx-effects>
+
+    </dl>
+  </cxx-function>
+
+
+    </section>
+  </cxx-section>
+
+<cxx-section id="atomic.weak_ptr">
+    
+
+    <section>
+      <header><span class="section-number">4.4</span> <h1 data-bookmark-label="4.4 Class template atomic_weak_ptr">Class template <code>atomic_weak_ptr</code></h1> <span style="float:right"><a href="#atomic.weak_ptr">[atomic.weak_ptr]</a></span></header>
+      
+
+
+<pre><code>
+namespace std {
+  namespace experimental {
+  inline namespace concurrency_v1 {
+
+  template &lt;class T&gt; struct atomic_weak_ptr {
+    bool is_lock_free() const noexcept;
+    void store(weak_ptr&lt;T&gt;, memory_order = memory_order_seq_cst) noexcept;
+    weak_ptr&lt;T&gt; load(memory_order = memory_order_seq_cst) const noexcept;
+    operator weak_ptr&lt;T&gt;() const noexcept;
+
+    weak_ptr&lt;T&gt; exchange(weak_ptr&lt;T&gt;,
+      memory_order = memory_order_seq_cst) noexcept;
+
+    bool compare_exchange_weak(weak_ptr&lt;T&gt;&amp;, const weak_ptr&lt;T&gt;&amp;,
+      memory_order, memory_order) noexcept;
+    bool compare_exchange_weak(weak_ptr&lt;T&gt;&amp;, weak_ptr&lt;T&gt;&amp;&amp;,
+      memory_order, memory_order) noexcept;
+    bool compare_exchange_weak(weak_ptr&lt;T&gt;&amp;, const weak_ptr&lt;T&gt;&amp;, 
+      memory_order = memory_order_seq_cst) noexcept;
+    bool compare_exchange_weak(weak_ptr&lt;T&gt;&amp;, weak_ptr&lt;T&gt;&amp;&amp;, 
+      memory_order = memory_order_seq_cst) noexcept;
+
+    bool compare_exchange_strong(weak_ptr&lt;T&gt;&amp;, const weak_ptr&lt;T&gt;&amp;, 
+      memory_order, memory_order) noexcept;
+    bool compare_exchange_strong(weak_ptr&lt;T&gt;&amp;, weak_ptr&lt;T&gt;&amp;&amp;, 
+      memory_order, memory_order) noexcept;
+    bool compare_exchange_strong(weak_ptr&lt;T&gt;&amp;, const weak_ptr&lt;T&gt;&amp;, 
+      memory_order = memory_order_seq_cst) noexcept;
+    bool compare_exchange_strong(weak_ptr&lt;T&gt;&amp;, weak_ptr&lt;T&gt;&amp;&amp;, 
+      memory_order = memory_order_seq_cst) noexcept;
+
+    <code>constexpr</code> atomic_weak_ptr() noexcept = default;
+    atomic_weak_ptr(weak_ptr&lt;T&gt;) noexcept;
+    atomic_weak_ptr(const atomic_weak_ptr&amp;) = delete;
+    atomic_weak_ptr&amp; operator=(const atomic_weak_ptr&amp;) = delete;
+    atomic_weak_ptr&amp; operator=(weak_ptr&lt;T&gt;) noexcept;
+  };
+  } // namespace concurrency_v1
+  } // namespace experimental
+} // namespace std
+</code></pre>
+<br>
+<cxx-function para_num="1" id="atomic.weak_ptr.1">
+    
+    <pre><code><cxx-signature><code>constexpr</code> atomic_weak_ptr() noexcept = default;</cxx-signature></code></pre>
+
+    <dl>
+      
+  
+  <cxx-effects para_num="2" id="atomic.weak_ptr.2">
+    
+    <dt>Effects:</dt><dd>Initializes the atomic object to an empty value.</dd>
+  </cxx-effects>
+
+    </dl>
+  </cxx-function>
+<p para_num="3" id="atomic.weak_ptr.3">
+When any operation on an <code>atomic_shared_ptr</code> or <code>atomic_weak_ptr</code>
+causes an object to be destroyed or memory to be deallocated, that destruction or deallocation
+shall be sequenced after the changes to the atomic object's state. 
+</p>
+<p para_num="4" id="atomic.weak_ptr.4">
+<cxx-note><span class="nowrap">[ <em>Note:</em></span>
+    
+This prevents potential deadlock if the atomic smart pointer operation is not 
+lock-free, such as by including a spinlock as part of the atomic object's state, 
+and the destruction or the deallocation may attempt to acquire a lock.
+
+    <span class="nowrap">— <em>end note</em> ]</span>
+  </cxx-note> 
+</p>
+<p para_num="5" id="atomic.weak_ptr.5">
+<cxx-note><span class="nowrap">[ <em>Note:</em></span>
+    
+These types replace all known uses of the functions
+in <cxx-ref in="cxx" to="util.smartptr.shared.atomic">C++14 <span title="util.smartptr.shared.atomic">§20.8.2.6</span></cxx-ref>.
+
+    <span class="nowrap">— <em>end note</em> ]</span>
+  </cxx-note>
+</p>
+
+  
+    </section>
+  </cxx-section>
+
+    </section>
+  </cxx-clause>
+
+
+
+
+</body></html>
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 <head>
   <meta charset="utf-8"/>
-  <script src="bower_components/platform/platform.js"></script>
+  <script src="bower_components/webcomponentsjs/webcomponents.js"></script>
   <link rel="import" href="bower_components/cxx-html-doc-framework/framework.html"/>
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