Changelog:
- Features:
- RkObject and object tree ownership
- RkContainerItem, now continer supports space, RkWidget and RkContainter items
- Popup widget
- Hover event
- RkTransition - linear transition from one value to another, useful for effects
- RkAction, useful to execute synchronous actions
- Shortcuts
- Improvements:
- RkContainer
- RkEventQueue
- RkWidget
- RkButton
- events, actions and objects binds