PointerAdapter.consumeAllTouches is public
PointerListenerBuilder: defaultHandledValue

Allows control over the "handled" value for touch phases that aren't
explicitly handled by user-supplied functions
TouchSignals.forDisp -> Input.newTouchable

Input is the factory class for all touch and keyboard-related input
handlers
Don't wrap MovieButton's movie in another Sprite
KeyboardState: allows for polling of key status
Button fix: ensure _pointerOver gets set on pointerDown event
Change the way that TouchListeners consume touches

- TouchListener.handleTouches no longer returns a "handled" Boolean.
Instead, TouchListeners can consume individual Touches by removing them
from the Vector

- Fixed PointerAdapter.consumeOtherTouches to only consume unrelated
touches, rather than all touches