next 8.1.1-canary.25

Update webpack to 4.30.0: #7238
Fix default meta tag being added in AMP mode: #7248
Tweak ReasonML example: #7254
Fix webpack fetch error: #7253
Make sure to update asPath on hashOnlyChange to: #7255
Remove reload and use only location.reload: #7257
Update to latest version of browserstack-local: #7236
Fix application output: #7264
Add docs to public: #7239
Fix attempting to observe non-DOM refs in Link: #7249
Add test for invalid ref in Link: #7266
Renamed IContext to be NextPageContext: #7272
With apollo auth proxy: #7165
Fix FOUC issue on with-fela example: #7229
Add example with babel-plugin-react-css-modules: #7219
Revert migrating babel-loader into Next.js: #7265
Remove components from client router: #7281
Integrate type checking into compilation pipeline: #7278
Add initial docs for TypeScript: #7169
Merged with-jest and with-flow examples into a new with-jest-flow example.: #7224

Huge thanks to @coryshrmn, @sync, @huv1k, @Timer, @lfades, @nabiltntn, @aga5tya, @Samciu, @timneutkens, and @samw3 for helping!