chore(package): update chai to version 3.5.0

http://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -26,7 +26,7 @@
     "z-schema": "3.16.1"
   },
   "devDependencies": {
-    "chai": "3.4.1",
+    "chai": "3.5.0",
     "clone-deep": "0.2.4",
     "istanbul": "^0.4.2",
     "jsdoc": "3.4.0",