fix(package): update can-stache to version 5.1.0

Closes #223

Author: greenkeeper[bot]

package.json

@@ -51,7 +51,7 @@
     "can-namespace": "^1.0.0",
     "can-reflect": "^1.17.9",
     "can-route": "^4.0.0",
-    "can-stache": "^4.17.3",
+    "can-stache": "^5.1.0",
     "can-stache-ast": "^1.1.0",
     "can-stache-bindings": "^4.4.0",
     "can-symbol": "^1.5.0",