* Adds iOS callback for viewWillAppear/didAppear e.t.c.
* Adds in screen events on Android
* Fixed issue with rightButtons getting ignored in preference for empty Screen buttons
* Android screen lifecycle
This commit is contains a few changes and enhancements to the PR made by simon:
* Use getEventEmitter instead of sendNavigatorEvent
* Dispatch willDisappear and didDisappear events when pushing screens
* Dispatch willAppear and didAppear events when popping screen
Implement collapsingToolBarExpendedColor and showTitleWhenExpended (#793)
collapsingToolBarExpendedColor - determines the TitleBar color in expended mode
showTitleWhenExpended - defaults to true when expended color is defined.
Fadeout translucent drawable when collapsing (#788)
* Fadeout translucent drawable when collapsing
* Change default scrim color to none
* Fade out translucent when collapsingToolBarCollapsedColor is not defined
* Fixed issue with rightButtons getting ignored in preference for empty Screen buttons
* Fixes setting transparency of navigation bar using setStyle or when no transitionCoordinator
* Set to use old bridge for compatibility with 0.30+
* Fixed crash occurring when tabBarBackgroundColor or tabBarButtonColor is not supplied
* Adds setStyle property to index.js
* Adds native code for setting style on RCCViewController
* Fixes setStyle function
* Fixes setting style on navigator
* Adds some styling to tab bar controller and fixes some bugs
* Adds ability to set modal presentation style
* Makes sure autoAdjustScrollViewInsets isn't propagated through when push another view controller
* Changes import to reference controllers rather than react-native-controllers and fixes setStyle mutating colours
* Fixed to work with RN 33
* Fixes updating title font styling with new RCCTitleViewHelper logic
* Fixes subtitle being shown
* Adds extendedLayoutIncludesOpaqueBars to navigation styling
* Adds ability to add shadows to text in navigation bar / tab bar
* Fixed merged ReactGateway.java file
* Fixed issue with rightButtons getting ignored in preference for empty Screen buttons
* Fixes compiler error