chore(package): update standard to version 14.3.4

Closes #52

Author: greenkeeper[bot]

package.json

@@ -49,6 +49,6 @@
     "husky": "^3.0.0",
     "mocha": "^6.1.4",
     "nyc": "^14.1.1",
-    "standard": "^12.0.1"
+    "standard": "^14.3.4"
   }
 }