Changes since previous release:
* optimized and simplified the "add" command, don't obtain and print
song list when adding directories
* same optimization for the "ls" command, which did some very
expensive underscore matching logic using "listall"
* show MPD error message in "status"
* fixed special character handling in bash completion
* don't fall back to ISO-Latin-1 in unknown locale
* disable character set conversion to/from pipe
* bug fixes
- New output format for "mpc playlist"
- Support for many more search types with "mpc search"
- Add "mpc del 0" behaviour to remove the currently playing song
- Add outputs, enable and disable commands
- multiple bug fixes.
