Adding the possibility to mute at app level mopidy
Adding mpd frontend capabilities for audio-mute
Merge branch 'develop' into feature/audio-mute
Merge branch 'develop' into feature/audio-mute
Deleting unused import
Updating tests to be compliant with the new response (ok)
Putting full name of the variable, as Jodal asked
Improving a little the mute code, but still don't know how to mute at mixer level
Now it's also prepared for mixer level, thanks adam
Following thomas' suggestions, correct mixer mute
Merge branch 'develop' into feature/audio-mute
audio: Tweak mute docs, fix set_mute() return type if no mixer_track
audio: Reorder methods
core: Tweak mute docs, add simple test case
mpd: Test that output enabling/disabling unmutes/mutes audio
audio: Add test TODO
core: Add volume arg to volume_changed() event

It was already called with the argument, and both the MPD and HTTP frontends
handled it/expected it. It was just the default implementation in CoreListener
that lacked the argument.
mpd: Trigger 'output' idle event on mute_changed()

This is required for e.g. ncmpcpp to detect that an enableoutput/disableoutput
command worked, making it possible to toggle the output back without restarting
ncmpcpp.
docs: Update changelog
mpd: Add TODO for handling unknown outpitid