Log Message:
musicpd: update to 0.21.3.

ver 0.21.3 (2018/11/16)
* output
  - alsa: fix crash bug
  - alsa: fix stuttering at start of playback
  - alsa: fix discarded samples at end of song
  - alsa: clear error after reopening device
* log: default to journal if MPD was started as systemd service

ver 0.21.2 (2018/11/12)
* protocol
  - operator "=~" matches a regular expression
  - operator "contains" matches substrings
* decoder
  - ffmpeg: require FFmpeg 3.1 or later
  - ffmpeg: fix broken sound with certain codecs
* output
  - alsa: fix high CPU usage with dmix
  - httpd: fix three crash bugs
* mixer
  - alsa: fix more rounding errors
* fix zlib support

ver 0.21.1 (2018/11/04)
* protocol
  - allow escaping quotes in filter expressions
  - operator "==" never searches substrings in filter expressions
* decoder
  - ffmpeg: fix build failure with non-standard FFmpeg installation path
  - flac: fix linker failure when building without FLAC support
* encoder
  - vorbis: fix linker failure when building without Vorbis decoder
* fix build failure on Linux-PowerPC
* fix build failure on FreeBSD
* eliminate DLL dependencies on Windows
* add warning about buggy Boost version 1.67
* require Meson 0.47.2 because a Meson 0.47.1 bug breaks our build

ver 0.21 (2018/10/31)
* configuration
  - add "include" directive, allows including config files
  - incremental "metadata_to_use" setting
* protocol
  - "tagtypes" can be used to hide tags
  - "find" and "search" can sort
  - "outputs" prints the plugin name
  - "outputset" sets runtime attributes
  - close connection when client sends HTTP request
  - new filter syntax for "find"/"search" etc. with negation
* database
  - simple: scan audio formats
  - proxy: require libmpdclient 2.9
  - proxy: forward `sort` and `window` to server
* player
  - hard-code "buffer_before_play" to 1 second, independent of audio format
  - "one-shot" single mode
* input
  - curl: download to buffer instead of throttling transfer
  - qobuz: new plugin to play Qobuz streams
  - tidal: new plugin to play Tidal streams
* tags
  - new tags "OriginalDate", "MUSICBRAINZ_WORKID"
* decoder
  - ffmpeg: require at least version 11.12
  - gme: try loading m3u sidecar files
  - hybrid_dsd: new decoder plugin
  - mad: move "gapless_mp3_playback" setting to "decoder" block
  - mikmod: require at least version 3.2
  - pcm: support audio/L24 (RFC 3190)
  - sidplay: support basic and kernal rom (libsidplayfp)
* resampler
  - soxr: flush resampler at end of song
* output
  - alsa: non-blocking mode
  - alsa: change "dop" and "allowed_formats" settings at runtime
  - ao: fix crash bug due to partial frames
  - shout: support the Shine encoder plugin
  - sndio: remove support for the broken RoarAudio sndio emulation
  - osx: initial support for DSD over PCM
  - roar: removed
  - httpd_output: support for unix sockets
* mixer
  - sndio: new mixer plugin
* encoder
  - opus: support for sending metadata using ogg stream chaining
* listen on $XDG_RUNTIME_DIR/mpd/socket by default
* append hostname to Zeroconf service name
* systemd watchdog support
* require GCC 6
* build with Meson instead of autotools
* use GTest instead of cppunit

ver 0.20.23 (2018/10/29)
* protocol
  - emit "player" idle event when restarting the current song
* fix broken float to s32 conversion
* new clang crash bug workaround

ver 0.20.22 (2018/10/23)
* protocol
  - add tag fallbacks for AlbumArtistSort, ArtistSort
  - fix empty string filter on fallback tags
  - "count group ..." can print an empty group
  - fix broken command "list ... group"
* storage
  - curl: URL-encode paths
* decoder
  - fluidsynth: adapt to API change in version 2.0
* Android
  - now runs as a service
  - add button to start/stop MPD
  - add option to auto-start on boot
* work around clang bug leading to crash
* install the SVG icon