This patch lets players be able to move any unit under their control around. Cf. [[ https://wildfiregames.com/forum/index.php?/topic/25948-capturable-animals/ | this thread ]].
One can set "Controllable" to `false` for an entity in the new `Controllability` component to prevent this behaviour for that unit.
The check whether a unit can be controlled is moved higher up the command-chain, which seems more logical to me.
When the `Control all units`-cheat is on, an entity can still be controlled.