chore(package): update standard to version 13.0.2

Closes #3

Author: greenkeeper[bot]

package.json

@@ -49,7 +49,7 @@
     "jest": "^23.6.0",
     "npm-run-all": "4.1.5",
     "semantic-release": "^15.13.1",
-    "standard": "^12.0.1"
+    "standard": "^13.0.2"
   },
   "jest": {
     "verbose": true,