* Ghost roles now get new Minds
* Some round start/end button stuff
* Mind tracking for better round end reports
* Make traitor kill objectives use mind CharacterName rather than actual occupied entity ("kill brain" prevention)
* Transition over to EntityUid for mind stuff because that's the only way to do it
* BrainSystem fix for PR rebase
* Converted all SnapGridPositionChangedEvent subscriptions to AnchorStateChangedEvent.
* Fixes power tests with new anchored requirements.
* Moved AnchorableComponent into construction.
AnchorableComponent now uses Transform.Anchored.
* Fixed bug with nodes, power works again.
* Adds lifetime stages to Component.
* Update Engine to v0.4.70.