Bobcat 863 Edit v1.0.0.0

This is an edit of ARM-Team's Bobcat 863. The reason for the edit was to make the Bobcat work better with terrafarm. The issue was that when digging stones, the Bobact, as with many skidsteers, would fall forward. So this has been fixed. I chose this skidsteer for this simply because it's the one I have experience with in real life.

With that said, the physics on this seems a bit more natural now, which I enjoy.