Preventing fluffs from attempting to move while attached.
Removed kinematic non-pushables from pushable blocks in favor just using mass.
Prevent fluffs from scaling weirdly when attaching to floor.
SimpleMover now relies on rigidbody drag if one is attached, otherwise it fakes friction using dampening.
Fluffs move using rigidbodies (with very little mass).
Fluffs are triggers when not moving, but full colliders while moving.
Fluffs test for being blocked when being passed and pulled.
Ensure that fluff is removed from the spawner list when it is destroyed.
Only apply dampening if SimpleMover is not attached to a Rigidbody.