docs: clarify URIs are opaque, frontends should not derive meaning
docs: clarify URIs are opaque, frontends should not derive meaning

mopidy/mopidy,jcass77/mopidy,kingosticks/mopidy,jcass77/mopidy,mopidy/mopidy,kingosticks/mopidy,kingosticks/mopidy,jcass77/mopidy,mopidy/mopidy