* Add Flow libdef
* Move libdef to flow folder in root
* Update libdef with some refinements discovered while writing test
Mostly refining navigator config types. In the past when we tried it we got in-repo Flow errors. With a libdef we can now assert it as true!
* Get rid of all imports in libdef and refine some types
* allow transition configuration between tabs
* we don't need to pass configureTransition to TabBarComponent
* Update TabAnimations.js
* Update TabNavigator.md
* Add SafeAreaView - JS only version
* Add SafeAreaView
* Looking pretty good
* Small refactor
* Remove console.log
* Fix merge conflict with Header flow types.
* Fix conflict with itemsContainerStyle.
* Fix merge conflict.
* Fix merge conflict, yarn and package.json from fixflow
* Fix merge conflict, navigation playground yarn.lock and package.json with fixflow
* Now it can work on lower versions of RN
* Snapshots merge conflict.
* Update DrawerNavigator snapshot.
* Fix conflict with iconContainerStyle
* Add support for correct status bar height on iPad.
* Update jest snapshots.
* Update StackNavigator snapshot.
* Use modulo instead of while
* Fix landscape tab bar width on < iOS 11
* Fixes default drawerWidth to match material ui patterns.
Previously: calculated based on device width regardless of orientation and did not recalculate when orientation changed.
Now: calculates based on minimum of device height/width, remains constant and guaranteed to always fit screen regardless of orientation.
This is the expected behavior based on observing Google apps (e.g. Gmail). This is also better than recalculating on every orientation change, which would result in variable width drawers and awkward empty space when in landscape in most cases.
* Remove console.log
* [Playground] Duplicate StacksInTabs to StacksOverTabs
* [Playground] Move nested routes into root stack so they appear on top
* [Playground] Go to SettingsTab instead of pushing a new Settings screen
