fix(package): update can to version 5.1.0

Closes #23

Author: greenkeeper[bot]

package.json

@@ -31,7 +31,7 @@
     "todomvc-common": "^1.0.2"
   },
   "dependencies": {
-    "can": "^3.2.2",
+    "can": "^5.1.0",
     "dom-patch": "^1.0.0",
     "micro-location": "^0.1.4",
     "node-route": "^1.0.1"