chore(package): update css-loader to version 3.0.0

Closes #192

Author: greenkeeper[bot]

package.json

@@ -14,7 +14,7 @@
     "babel-regenerator-runtime": "^6.5.0",
     "clean-webpack-plugin": "^0.1.18",
     "codecov": "^3.0.0",
-    "css-loader": "^0.28.9",
+    "css-loader": "^3.0.0",
     "dom-storage": "^2.0.2",
     "ejs-loader": "^0.3.0",
     "eslint": "^4.18.0",