chore(package): update babel-loader to version 8.0.3

Closes #48

Author: greenkeeper[bot]

package.json

@@ -36,7 +36,7 @@
     "autoprefixer": "^7.1.2",
     "babel-core": "^6.25.0",
     "babel-eslint": "^8.0.0",
-    "babel-loader": "^7.1.1",
+    "babel-loader": "^8.0.3",
     "babel-plugin-transform-async-to-generator": "^6.24.1",
     "babel-plugin-universal-import": "^1.2.5",
     "babel-polyfill": "^6.23.0",