WIP - Sex Ed animation, V6 models HMW update (Patreon)

Characters and scenery for the new animation are done. 

I also checked the pony model repository and realized that the HMW update had added a bunch of interesting stuff : male head, additional hooves (male&female unshorn fetlock and kirin), and some more controls over butt & belly shape. 

So males might make it into the app at some point, although they will still look a bit marely and will probably be restricted to animations that don't rely on precise muzzle position.

(The bat ears were there from the start, I just don't know which one to add. Probably Echo, since she is kinda the default batpony.)