fix(package): update loader-utils to version 1.4.0

Closes #68

Author: greenkeeper[bot]

package.json

@@ -69,7 +69,7 @@
     "webpack": "~3.10.0"
   },
   "dependencies": {
-    "loader-utils": "~1.1.0"
+    "loader-utils": "~1.4.0"
   },
   "greenkeeper": {
     "ignore": [