Added bitmask layers (Ground, Air) so that multiple units can occupy the same tile. Added static handlers in BaseTile to handle the occupation/arriving/teleporting. Added function for deleting unit (Cant just use the default since we must leave the board first). Fix in candle so that it's not destroyed in CanMoveOn since this is test (used by e.g. pathfinding) and shouldn't have any side-effects.
Merge branch 'master' of https://github.com/Niklas83/UnityGame1
Added layer mask to medusa
Reverted player in 2 scenes back to prefabs.