Add conditional to message handler so that attached handlers can take over
Add conditional to message handler so that attached handlers can take over

jodal/mopidy,rawdlite/mopidy,tkem/mopidy,vrs01/mopidy,hkariti/mopidy,liamw9534/mopidy,mokieyue/mopidy,ZenithDK/mopidy,vrs01/mopidy,jodal/mopidy,bencevans/mopidy,vrs01/mopidy,SuperStarPL/mopidy,hkariti/mopidy,diandiankan/mopidy,swak/mopidy,kingosticks/mopidy,diandiankan/mopidy,jodal/mopidy,ZenithDK/mopidy,glogiotatidis/mopidy,abarisain/mopidy,vrs01/mopidy,ali/mopidy,dbrgn/mopidy,diandiankan/mopidy,quartz55/mopidy,adamcik/mopidy,dbrgn/mopidy,SuperStarPL/mopidy,jmarsik/mopidy,jcass77/mopidy,liamw9534/mopidy,ali/mopidy,priestd09/mopidy,bacontext/mopidy,kingosticks/mopidy,ali/mopidy,ZenithDK/mopidy,glogiotatidis/mopidy,diandiankan/mopidy,hkariti/mopidy,swak/mopidy,pacificIT/mopidy,mopidy/mopidy,hkariti/mopidy,bacontext/mopidy,mopidy/mopidy,bacontext/mopidy,pacificIT/mopidy,tkem/mopidy,rawdlite/mopidy,jcass77/mopidy,woutervanwijk/mopidy,pacificIT/mopidy,ZenithDK/mopidy,rawdlite/mopidy,glogiotatidis/mopidy,quartz55/mopidy,quartz55/mopidy,dbrgn/mopidy,mokieyue/mopidy,glogiotatidis/mopidy,dbrgn/mopidy,bacontext/mopidy,priestd09/mopidy,bencevans/mopidy,kingosticks/mopidy,mokieyue/mopidy,tkem/mopidy,jmarsik/mopidy,jmarsik/mopidy,SuperStarPL/mopidy,woutervanwijk/mopidy,bencevans/mopidy,pacificIT/mopidy,abarisain/mopidy,tkem/mopidy,jcass77/mopidy,SuperStarPL/mopidy,rawdlite/mopidy,mopidy/mopidy,adamcik/mopidy,ali/mopidy,bencevans/mopidy,quartz55/mopidy,mokieyue/mopidy,jmarsik/mopidy,swak/mopidy,priestd09/mopidy,adamcik/mopidy,swak/mopidy