Merge pull request #161 from docpress/greenkeeper-standard-8.4.0

Update standard to version 8.4.0 🚀

Author: Kikobeats

package.json

@@ -40,7 +40,7 @@
     "mocha": "3.1.2",
     "mocha-clean": "1.0.0",
     "nyc": "8.3.0",
-    "standard": "8.3.0",
+    "standard": "8.4.0",
     "superstatic": "4.0.3"
   },
   "scripts": {