Fixing spine animations -- kind of;

Trella's arms still snap;
Added new Spine-Unity assets;
Merge branch 'master' of https://github.com/ifdm/siphon
Improved push and pull;

Fixing multiple interactions between objects and player;
Merge branch 'master' of https://github.com/ifdm/siphon

Conflicts:
	Assets/Graphics/Skeletons/Player/Player Skeleton.asset