6.0.1-canary.0

Patches

• Docs: add missing fat arrow: #4245
• Upgrade update-check: #4247
• Add basic export example: 62f9736
• Add export of homepage when exporting without exportPathMap: #4253
• Prevent now-env from running in production: #4259
• Add docker example: #4261
• Upgrade react-hot-loader: #4277
• Fix with-jest example: #4278
• Catch errors from update-check: #4276

Credits

Huge thanks to @gokaygurcan, @tim-phillips and @evenchange4 for helping!