Migrate various thinkers to plain objects.

WIP: Gib models currently in progress.
WIP: IK re-rigging of Demolitionist in progress.

FuturePlans.md

@@ -111,6 +111,7 @@ All the hard stuff *(some of these aren't guaranteed)*.
   - Layers of White *(Summon the White Lady)*
   - Fluffy Moth *(Pet the White Lady 50 times)*
   - Ara Ara *(Have the White Lady kill a total of 100 enemies)*
+* **Re-animate all base models with IK *(important for consistency)***
 * **Additional gestures + gesture menu**
   - Clap
   - The Bird