Big thanks to (in no order):
Paul Kienzle (ctload)
Mark Sherry (base of pymunk.py)
unknown @ pygame (vec2d)
Devan Lai (vec2d autoconvert)
alecthomas (base setup)
mr Chipmunk himself, Scott Lembcke! (Chipmunk)
and everyone else that have conrtibuted in any way.

(are you missing? contact me add I will add you)