diff --git a/package-lock.json b/package-lock.json
index 6ec42f7..e13cf98 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -98,7 +98,8 @@
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       "resolved": "https://registry.npmjs.org/arr-union/-/arr-union-3.1.0.tgz",
-      "integrity": "sha1-45sJrqne+Gao8gbiiK9jkZuuOcQ="
+      "integrity": "sha1-45sJrqne+Gao8gbiiK9jkZuuOcQ=",
+      "optional": true
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@@ -113,7 +114,8 @@
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-      "integrity": "sha1-WWZ/QfrdTyDMvCu5a41Pf3jsA2c="
+      "integrity": "sha1-WWZ/QfrdTyDMvCu5a41Pf3jsA2c=",
+      "optional": true
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@@ -128,7 +130,8 @@
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       "resolved": "https://registry.npmjs.org/atob/-/atob-2.1.1.tgz",
-      "integrity": "sha1-ri1acpR38onWDdf5amMUoi3Wwio="
+      "integrity": "sha1-ri1acpR38onWDdf5amMUoi3Wwio=",
+      "optional": true
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@@ -139,6 +142,7 @@
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+      "optional": true,
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@@ -153,6 +157,7 @@
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           "integrity": "sha1-dp66rz9KY6rTr56NMEybvnm/sOY=",
+          "optional": true,
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@@ -161,6 +166,7 @@
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+          "optional": true,
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@@ -169,6 +175,7 @@
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+          "optional": true,
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@@ -177,6 +184,7 @@
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+          "optional": true,
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@@ -186,12 +194,14 @@
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-          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8="
+          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
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+          "integrity": "sha512-s5kLOcnH0XqDO+FvuaLX8DDjZ18CGFk7VygH40QoKPUQhW4e2rvM0rwUq0t8IQDOwYSeLK01U90OjzBTme2QqA==",
+          "optional": true
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@@ -258,6 +268,7 @@
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+      "optional": true,
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@@ -273,7 +284,8 @@
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-          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8="
+          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
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@@ -353,6 +365,7 @@
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@@ -364,6 +377,7 @@
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           "integrity": "sha1-w1se+RjsPJkPmlvFe+BKrOxcgRY=",
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@@ -371,7 +385,8 @@
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-          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8="
+          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
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@@ -404,6 +419,7 @@
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       "integrity": "sha1-S8A3PBZLwykbTTaMgpzxqApZ3KA=",
+      "optional": true,
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@@ -430,7 +446,8 @@
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-      "integrity": "sha1-E3kY1teCg/ffemt8WmPhQOaUJeY="
+      "integrity": "sha1-E3kY1teCg/ffemt8WmPhQOaUJeY=",
+      "optional": true
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@@ -510,7 +527,8 @@
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       "resolved": "https://registry.npmjs.org/copy-descriptor/-/copy-descriptor-0.1.1.tgz",
-      "integrity": "sha1-Z29us8OZl8LuGsOpJP1hJHSPV40="
+      "integrity": "sha1-Z29us8OZl8LuGsOpJP1hJHSPV40=",
+      "optional": true
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@@ -578,12 +596,14 @@
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-      "integrity": "sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU="
+      "integrity": "sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU=",
+      "optional": true
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@@ -593,6 +613,7 @@
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@@ -601,6 +622,7 @@
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+          "optional": true,
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@@ -609,6 +631,7 @@
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@@ -618,12 +641,14 @@
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-          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8="
+          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
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+          "integrity": "sha512-s5kLOcnH0XqDO+FvuaLX8DDjZ18CGFk7VygH40QoKPUQhW4e2rvM0rwUq0t8IQDOwYSeLK01U90OjzBTme2QqA==",
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       "integrity": "sha1-Jqcarwc7OfshJxcnRhMcJwQCjbg=",
+      "optional": true,
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@@ -744,6 +770,7 @@
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@@ -816,6 +843,7 @@
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       "integrity": "sha1-QpD60n8T6Jvn8zeZxrxaCr//DRk=",
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@@ -847,7 +875,8 @@
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+          "bundled": true,
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@@ -865,11 +894,13 @@
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+          "bundled": true,
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@@ -882,15 +913,18 @@
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@@ -993,7 +1027,8 @@
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@@ -1003,6 +1038,7 @@
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@@ -1015,17 +1051,20 @@
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           "version": "3.0.4",
           "bundled": true,
+          "optional": true,
           "requires": {
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         "minimist": {
           "version": "0.0.8",
-          "bundled": true
+          "bundled": true,
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@@ -1042,6 +1081,7 @@
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@@ -1114,7 +1154,8 @@
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@@ -1124,6 +1165,7 @@
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           "bundled": true,
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@@ -1199,7 +1241,8 @@
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@@ -1229,6 +1272,7 @@
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@@ -1246,6 +1290,7 @@
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           "bundled": true,
+          "optional": true,
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@@ -1284,18 +1329,21 @@
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-      "integrity": "sha1-3BXKHGcjh8p2vTesCjlbogQqLCg="
+      "integrity": "sha1-3BXKHGcjh8p2vTesCjlbogQqLCg=",
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@@ -1349,6 +1397,7 @@
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       "integrity": "sha1-GLKB2lhbHFxR3vJMkw7SmgvmsXc=",
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@@ -1358,7 +1407,8 @@
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@@ -1375,6 +1426,7 @@
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@@ -1822,6 +1876,7 @@
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       "integrity": "sha1-qeEss66Nh2cn7u84Q/igiXtcmNY=",
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       "integrity": "sha1-C17mSDiOLIYCgueT8YVv7D8wG1Y=",
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@@ -1860,7 +1917,8 @@
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+          "integrity": "sha512-NGEErnH6F2vUuXDh+OlbcKW7/wOcfdRHaZ7VWtqCztfHri/++YKmP51OdWeGPuqCOba6kk2OTe5d02VmTB80Pw==",
+          "optional": true
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@@ -2097,12 +2155,14 @@
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+      "integrity": "sha1-wyq9C9ZSXZsFFkW7TyasXcmKDb8=",
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       "integrity": "sha1-7Nyo8TFE5mDxtb1B8S80edmN+48=",
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@@ -2180,6 +2240,7 @@
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+      "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
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@@ -3641,7 +3756,8 @@
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