Merge changes Ic88e8094,I4253bf4b,Iba4ebd3c,I943b6352,If88c0b08, ...
* changes:
Made it easier to use updatable Animators
Improved the interpolators of the icon appearing
Modified the way icons merge into the shelf
Fixed a potential heads up crash
Fixed a bug where the notifications would close on back
Bye bye veto button
Only requiring 2 taps for accessibility on lock screen
Fixed a bug where systemui could crash
Introduced the visual stability manager
Removing notifications always immediately when swiping them away