0.4.0

 * finally fixed an old decoder bug to prevent memory leaks during hard process (thanks to piem)
 * add blocksize property to the processor API
 * add many unit tests (check tests/alltests.py)
 * re-add UI files (sorry, was missing in the last packages)
 * various bugfixes
 * encoders not all much tested on big files, please test!
 * piem is now preparing some aubio analyzers :P