Log Message:
Update to 0.5.1 and take MAINTAINER. From the changelog:

- fixed bug settings custom tags to splitted files
- fixed bug for mac compilation (#2099498 : no plugin matches the
    file 'xxx')
- added plugin system for audio formats (currently supports ogg
    vorbis and mp3)
- implemented STDIN and STDOUT (like in the original mp3splt)
- moved translation of error codes to string into the library
- implemented experimental version of 'mp3splt.log' (like in the
    original mp3splt)
- return codes of many functions were checked
- option '-o' now creates directories if necessary
- fixed a log of bugs, including :
(some are related to mp3splt command line, but I post them here)
#1807288 : one-off bug
#1483040 : problems with output file path(mp3splt is removing '/')
#1665006 & #1665002 : corrected return codes & const correctness
#2000246 : changed 'splitted' to 'split'
#118157 : unplayable stdin files on windows (+ same problem for stdin)