[Liznoo] PlatformLayer::emit{WokeUp,GonnaSleep} are now slots.
[Liznoo] Use PlatformLayer::emit{WokeUp,GonnaSleep} for UPower.
[Liznoo] Use core EntityManager for entity sending.
[Liznoo] Code style fixes.
[Liznoo] Get rid of gotEntity() signal.
[Liznoo] Moved screenplatform/ -> platform/screen/
[Liznoo] Moved events platform layer to platform/events/.