Will be adding more and more models as I go... right now just taking care of what I need immediately for work. Really a can't wait till I get a chance to implement some of the more unique charts.
Of course people are always welcome to contribute some new models, and I'll do my best to keep them consistent with everything else.
Fork it and submit. Bob's very open to getting other people to collaborate with him. That said, you'd have to do it in the d3 style.