This is my (piman's) rough outline of where I want to be. Other people,
add to it.

0.6.2
 - Make pyddr.py use constants.py, new input manager, new menus.
 - Clean up the main select/dance/judge loop.
 - A release we can safely use for demos, packages, etc.

0.6.3
 - Player-as-object patch (possible 0.6.2).
 - Extend constants.py to cover themes directories.
 - Make theme-finding use rscdir (rsc_path?) and pyddr_path.

0.6.4
 - Separate Song (makes arrow events out of patterns), and SongFile.
   (loads file, gets metadata, creates Song given a difficulty)
   - This should remove fastSong.
   - Possible 0.6.3.
 - DWI loader natively using the SOngFile interface.
