Minor update on the character modeller

Just a small update for the character modeller I'm working on, sprites are now linkable to bones and they draw. Next will be implementing the bone start/end positions to line up the sprite properly and sprite selection per bone...then we'll be able to create a little smiley face! There are a couple other things I want to implement shortly as well:

• Reording of draw order of bones so the sprites draw properly
• Being able to manipulate keyframes better, deleting keyframes, adding keyframes in different places, that sort of thing.