- Update to ver 0.20.21 (2018/08/17)
* database
- proxy: add "password" setting
- proxy: support tags "ArtistSort", "AlbumArtistSort", "AlbumSort"
- simple: allow .mpdignore comments only at start of line
- proxy: fix "search already in progress" errors
- proxy: implement "list ... group"
* decoder
- dsdiff, dsf: support more MIME types
- dsdiff, dsf: allow 4 MB ID3 tags
- opus: support R128_ALBUM_GAIN tag
- ffmpeg: fix av_register_all() deprecation warning (FFmpeg 4.0)
* input
- mms: fix lockup bug and a crash bug
* output
- httpd: remove broken DLNA support code
- pulse: cork stream when paused due to "single" mode
* playlist
- cue: support file type declaration "FLAC" (non-standard)
* player
- fix spurious "Not seekable" error when switching radio streams
* protocol
- fix "modified-since" filter regression
- validate absolute seek time, reject negative values
* URI schemes are case insensitive
- deal with API change in fluidsynth with mpd-fluidsynth.patch
- use autosetup