* Fix ability to add color for back button

* Change docs because color can be used with iOS too

* Simplify code more

* Move icon logic to one function

* Make returning more clear

* Remove title setting because it is in setBackItem

* Make setBackItem function more clear

* Looks like the if is not needed

* Update RNNBackButtonOptions.m

* Update RNNBackButtonOptions.m

* Renamed RNNRootViewProtocol to RNNParentProtocol and added RNNLeafProtocol

* fixed unit test

* Better options resolving

* Revert "Revert "Refactor options (#3962)""

This reverts commit c266041b85.

* Revert "Revert "Fixes shared element transition""

This reverts commit 005f039f7c.

* Revert "Revert "Adresses #3963 - stack options applied to children""

This reverts commit be09cb0e9a.

* Revert "Revert "Added unit test coverage for RNNNavigationController""

This reverts commit 199cebd221.

* Merge stack options

This commits adds support for merging stack options by the stack’s componentId

Also while I’m at it - use fade animation when setting root

* Merge BottomTabs options

Merge BottomTabs options when calling mergeOptions with BottomTabs componentId

* Fixes options

This reverts commit f2635f1116.

* Removed possibleOpenGesture MMOpenDrawerGestureModePanningCenterView possibleOpenGestureModesForGestureRecognizer. This allows swipeable componenets like swipeable lists to be used on iOS.

* Revert "Removed possibleOpenGesture MMOpenDrawerGestureModePanningCenterView possibleOpenGestureModesForGestureRecognizer. This allows swipeable componenets like swipeable lists to be used on iOS."

This reverts commit f2500be9f7.

* Revert "Removed possibleOpenGesture MMOpenDrawerGestureModePanningCenterView possibleOpenGestureModesForGestureRecognizer. This allows swipeable componenets like swipeable lists to be used on iOS."

This reverts commit f2500be9f7.

* Allow styling of default back button on iOS.

* Refactored backButton api

* Move StackController to separate package

Implement BackButtonOptions

* Somewhat simplify StackController creation in tests

* Pull backButton logic from StackController

* Handle all TopBar button options in TopBarButtons

* fix back button on iOS