fix(package): update react-hot-loader to version 4.3.1

Closes #18

Author: greenkeeper[bot]

package.json

@@ -40,7 +40,7 @@
     "qs": "6.5.0",
     "react": "^16.1.0",
     "react-dom": "^16.1.0",
-    "react-hot-loader": "^3.0.0-beta.7",
+    "react-hot-loader": "^4.3.1",
     "react-redux": "^5.0.6",
     "react-router-component": "^0.39.0",
     "react-test-renderer": "^16.1.0",