Add debug thread feature to changelog.
Add debug thread feature to changelog.

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