* Added: ``audiofile.write()`` can now create MP3 files
* Changed: ``audiofile`` does now use ``soundfile``
to read MP3 files
(2x speed increase),
and to access metadata of MP3 files
(up to 1000x speed increase)
* Changed: depend on ``soundfile>=0.12.1``
* Changed: updated benchmark pages in documentation
to latest versions of tested libraries
* Fixed: depend on ``audmath>=1.3.0``