Version 0.5, 2 September 2008, Marc-Andre Lureau.
Deprecate usage of ".ogg" extension in favor of ".oga" (according to MIME Types and File Extensions from xiph.org)
Version 0.4, 29 July 2008, Lennart Poettering.
Document that every time a theme is updated to changed the directory needs to be touched.
Version 0.3, 25 July 2008, Lennart Poettering.
Reordered lookup algorithm, to allow easy overwriting of sounds from inherited themes.
Document "__custom" theme.
Document ".disabled" sound files.
Other fixes
Version 0.2, 4 June 2008, Marc-Andre Lureau and Lennart Poettering.
Updated the Lookup algorithm.
Remove Length and Locale from directory property.
Use OutputProfile instead of SoundSystem.
Add ReplayGain note.
Version 0.1, 11 February 2008, Marc-Andre Lureau.
Initial draft.