chore(package): update raw-loader to version 4.0.1

Closes #346

Author: greenkeeper[bot]

package.json

@@ -75,7 +75,7 @@
     "offline-plugin": "^5.0.0",
     "postcss-loader": "^2.0.3",
     "preact-jsx-chai": "^2.2.1",
-    "raw-loader": "^0.5.1",
+    "raw-loader": "^4.0.1",
     "regenerator-runtime": "^0.10.3",
     "replace-bundle-webpack-plugin": "^1.0.0",
     "script-ext-html-webpack-plugin": "^2.0.0",