* Rename getServerProps to getServerSideProps

* Remove unstable_ prefix from new methods

* Add error when legacy methods are detected

* Add legacy methods for babel transform

* Add unstable_getServerSideProps also

* Apply suggestions from code review
Co-Authored-By: NJoe Haddad <joe.haddad@zeit.co>

* Update types import
Co-authored-by: NJoe Haddad <timer150@gmail.com>

* Add calling getStaticPaths in development before showing fallback

* Move staticPathsWorker to next-dev-server

* Make sure to clear require cache in worker process

* bump

* Remove staticPathsCache member

* Update numWorkers for staticPathsWorker