fast, lightweight 2D rigid body physics library, transitional package

 Chipmunk is a simple, lightweight, fast and portable 2D rigid body physics
 library written in C. It's licensed under the unrestrictive, OSI approved
 MIT license. Its aim is to give 2D developers access the same quality of
 physics you find in newer 3D games.
 .
 This is a transitional package providing the development files, and
 can safely be removed.