Log Message:
2.1.5
Properly clean up the file handle when a backend fails to decode a file. Fix \ 
parsing of "N.M" channel counts in the FFmpeg backend (thanks to \ 
@piem). Avoid a crash in the raw backend when a file uses an unsupported number \ 
of bits per sample (namely, 24-bit samples in Python < 3.4). Add a \ 
__version__ value to the package.