chore(package): update standard to version 12.0.0

Closes #45

Author: greenkeeper[bot]

package.json

@@ -24,7 +24,7 @@
     "nyc": "^11.0.3",
     "source-loader": "^0.2.0",
     "spike-core": "^2.0.0",
-    "standard": "^10.0.2"
+    "standard": "^12.0.0"
   },
   "engines": {
     "node": ">= 6.0.0"