FlipTransitionManager: new transition manager that uses Sprite3D's rotationY property
PickerList: dispatches Event.OPEN and Event.CLOSE when the pop-up list is opened and closed
IPopUpContentManagers: detects content being removed from the stage as being closed, so that Event.CLOSE is properly dispatched (closes #970)
Experimental scrolling when using arrow keys to navigate list selection
Layouts: added getNearestScrollPositionForIndex() to support scrolling a specific item into view (references #966)
List, GroupedList: scroll to new selected index when index is changed by keyboard (closes #966)
docs tweaks
FeathersControl: added move() convenience function (closes #986)
Scroller: supports scrolling horizontally with vertical scroll wheel (closes #369)
ScreenNavigator: added isTransitionActive getter to indicate if a transition is in progress (closes #988)
ScreenNavigator: fixed issue where clearing a screen didn't dispatch FeathersEventType.TRANSITION_START
ScreenNavigator: a transition may cancel itself to return to previous screen (closes #989)
Scroller: removed some Math.max() calls to avoid unnecessary extra garbage collection
fixed duplicate variable warning
Label: added backgroundSkin, backgroundDisabledSkin, and padding properties (closes #407)
NumericStepper: added valueFormatFunction and valueParseFunction properties to support custom formatting of text displayed in the text input (closes #893)
docs fixes
added IFocusContainer interface and added support for it to DefaultFocusManager to allow containers to receive focus while allowing their children to also receive focus (closes #968)
Scroller: implements IFocusDisplayObject, while subclasses that need to support passing focus to children now implement IFocusContainer (references #968)
TextInput: isFocusEnabled getter calls super.isFocusEnabled