docs: v2.1.0 release notes
docs: v2.1.0 release notes

mopidy/mopidy,jcass77/mopidy,adamcik/mopidy,adamcik/mopidy,kingosticks/mopidy,kingosticks/mopidy,jcass77/mopidy,jcass77/mopidy,jodal/mopidy,jodal/mopidy,mopidy/mopidy,adamcik/mopidy,mopidy/mopidy,kingosticks/mopidy,jodal/mopidy