* Add deprecation warning for App Container
* Apply suggestions from code review
Co-Authored-By: Joe Haddad <joe.haddad@zeit.co>
* Tweak for more dead-code elimination
* Also provide AppTree in NextPageContext
* Don't predefine AppTree as null in ctx
* Make update smaller
* Don’t reassign variable
* Add test for AppTree in NextPageContext
* Update utils.ts
* Provide AppContainer to getInitialProps for getDataFromTree
* Update to only pass AppTree component instead of AppContainer
* Clean up props and remove extra imports
* Make updates from review
* De-dupe AppTree a bit
* Re-use wrapApp in router
* Remove un-needed change
* revert changes to examples until on stable
* Add test for AppTree
