Shared code for FoFiX and FoF:R.

You'll need those packages to run tests:

• glib
• sdl 1.2
• sdl_mixer 1.2
• libogg
• libvorbisfile
• libtheora
• soundtouch

For Windows, you should use the win32 dependency pack (to unzip into the win32 directory).

• Read the doc: https://fretwork.readthedocs.io
• Report bugs: https://github.com/fofix/fretwork/issues
• Get the latest version: https://pypi.org/project/fretwork