D bindings to Chipmunk2D 7.0.1

[rcorre via Digitalmars-d-announce]

chipmunkd [1] provides D bindings for the most recent version 
(7.0.1) of
Chipmunk2D [2], a 2D physics library.

Note that there is also DChip [3], which provides a full source 
port and is
currently targeting the 6.X branch. I figured bindings would be 
easier to keep
up to date with upstream releases than a full source port, though 
DChip has the
advantage of not requiring another dependency (and of having 
nicer-to-look at
source code?).

The ported demos seem to be working, but they depend on the 
rather outdated
glfw2. If you have glew and glfw2, you should be able to run the 
demos with dub.
Some of them look pretty cool.

The demo directory contains some hacked-together glfw2/glew 
bindings that were
just enough to get it working.

I also just realized Jakob Orvum already had some bindings [4], 
though they are a
few years out of date. In retrospect, I probably should have 
based my work on that. I really should research these things more 
thouroughly before I dive in. Oops.

The bindings were created with the help of dstep [5] (and a fair 
bit of manual
post-processing).

[1] https://github.com/rcorre/chipmunkd
[2] http://chipmunk-physics.net/
[3] https://github.com/d-gamedev-team/dchip
[4] https://github.com/JakobOvrum/ChipmunkD
[5] https://github.com/jacob-carlborg/dstep