Overgrowth alpha 49

Here is what is new in Overgrowth in this weekly alpha. If you are confused what a weekly alpha is, or even what Overgrowth is, please read our fancy FAQ. Basically, we are developing a massive video game from the ground up -- we are able to do this completely independently by accepting preorders for the game before it's done!

Here are a few highlights from the source repository:

- Added new automatic vertex weights
- Made it possible to exit rigging tool
- Improved skeleton saving and loading
- Added initial animation editor
- Added Catmull-Rom keyframe interpolation
- Fixed bone-link cursor
- Added alt-dragging in animation editor
- Ribbon improvements
- Added several new cursors
- Removed maximum bone limit
- Bug fixes

Making a silly animation

Thanks as always for all the support! See you guys in IRC and the forums.