* Fix rendering of children
* Game loop handles other restore
* Properly propagate onMount and onRemove to children
* Use BaseGame on gestures to minimize confusion
* Fix linting
* All children don't need preparation
* Add composability example
* gameRef might not be defined
* Add mustCallSuper
* isMounted on game
* Remove unused gameRef argument
* Made isMounted only modifiable by the component
* Move dartdoc to public isMounted
* Fix formatting
