* Use file hashes instead of BUILD_ID.
Now JSON pages also not prefixed with a hash and
doesn't support immutable caching.
Instead it supports Etag bases caching.
* Remove appUpdated Router Events hook.
Becuase now we don't need it because there's no buildId validation.
* Remove buildId generation.
* Turn off hash checks in the dev mode.
* Update tests.
* Revert "Remove buildId generation."
This reverts commit fdd36a5a0a307becdbd1d85ae3881b3a15b03d26.
* Bring back the buildId validation.
* Handle buildId validation only in production.
* Add BUILD_ID to path again.
* Remove duplicate immutable header.
* Fix tests.
* Remove traces of glamor
As talked about with @rauchg. Glamor takes up around 60KB of the bundle (pre-gzip). Since styled-jsx is the way to go now and we support adding glamor by the user we should remove it as dependency cause it is bundled even when not used.
Added rehydration to the example, since we did that in our code.
There is only one thing I'm not sure about and want to discuss:
what should we do with next/css. Right now I added a throw for when it is imported. I'm not sure if we should do that / some other way to notify the user it has been removed. The reasoning behind the throw is that when we would do a console.warn the user would see 'css.default.<X>' not found because we don't have the glamor dependency anymore.
* Update yarn.lock
* Remove test for styles
* Write BUILD_ID when building.
It's a random id (uuid.v4())
* Add buildId to the core JS files.
* Add immutable cache-control header.
Only if the buildId is matched.
* Set '-' as the dev buildId always.
* Add buildId handling for JSON pages.
* Remove the use of CDN and bundle everything inside the app.
We still pre-build the prefetcher because it needs
different webpack config which only targets browsers
supports Service Workers.
* Remove cdn config item.
We no longer using it.
* Stop adding script tags when staticMarkup=true
* Remove babel-plugin-transform-remove-strict-mode NPM module.
