Removed gizmo from AttackCaster prefab.
Made CountDownTimer serializable so it can be viewed in Inspector.
Added animation controlled root movement to CharacterMotor.

I added an attack to Rats to test animation driven root
movement. Reworked the AI and Enemy to handle the new
motor.
Merge branch 'root_driven_char'

Conflicts:
	Assets/Prefabs/Enemies/Rat.prefab