WalkXycle - physics-aware character animation

I’m writing a Blender add-on for creating and modifying character animations. The add-on allows unconstrained modification of a walking gait, and can provide feedback on the physical correctness of the current design. Useful if you’d like to modify a mocap gait and want it to remain physically plausible, and also for hand-animated walks. There’s a video on the Kickstarter website showing some examples: http://www.kickstarter.com/projects/1510522130/walkxycle