Cube-OSX 0.4 released!

From the Changelog:
-Major merge of code from Derek's port, so Cube-OSX should be much more stable now.
-Compiled with -O3 instead of -O2 to be like the Linux/Windows version. May be a bit faster.
-Source is .xcode now, not .pbproj, to prevent people opening the source in Project Builder (which might work, but isn't really the smartest thing to do).
-Minor cleanups in resolution code.
-Other cleanups.