Cube-OSX 0.3 released!

from the Changelog:
-Not compiled with debugging symbols anymore, so the binary should be a little smaller.
-Compiled with -O2 optimization, should be faster.
-Newest version of the SDL library (1.2.7), might fix some bugs.
-Xcode project much less dependent on my personal build tree.
-Now distributed as a .dmg.gz, much more pretty than .zip.
-Source much smaller because I didn't include the many megabytes of SDL lib source.