ToggleSwitch: warnings and docs fixes
List, GroupedList: proper invalidation flag on typical item change
List, GroupedList: better invalidation
List, GroupedList: better invalidation
List, GroupedList: typical item dimensions recalculated on list resize
ButtonGroup: properly resizes when data provider changes (closes #563)
Button: won't fire Event.TRIGGERED or change selection if FeathersEventType.LONG_PRESS is dispatched
Button: documented some functions that are supported for override in subclasses and now subject to deprecation
Button, Item Renderers: improved touch code (closes #590)
Documentation: added defaults to properties (closes #569)
docs tweaks
AnchorLayoutData: docs fix
Scroller: better data invalidation handling and moved refreshScrollValues into loop (closes #379)
FeathersControl: added FeathersEventType.CREATION_COMPLETE after first validation.
Item renderers: properly checks for _data along with the existing check for _owner (closes #595)
LayoutGroup: implemented clipping (closes #591)
Scroller: support for minimum scroll positions less than 0 (closes #344)
Scroller: better handling of scroll bar offsets whenfloating
Item renderers: better measurement to account for NaN (closes #592)
Item renderers: added delayTextureCreationOnScroll property (closes #545)