Pass bytestrings to command_output
Pass bytestrings to command_output

Fix #1485

sadatay/beets,sampsyo/beets,Kraymer/beets,YetAnotherNerd/beets,lengtche/beets,diego-plan9/beets,jcoady9/beets,moodboom/beets,tima/beets,xsteadfastx/beets,mathstuf/beets,asteven/beets,Andypsamp/CODfinalJUNIT,drm00/beets,Andypsamp/CODfinalJUNIT,arabenjamin/beets,jcoady9/beets,sampsyo/beets,shamangeorge/beets,PierreRust/beets,MyTunesFreeMusic/privacy-policy,jackwilsdon/beets,randybias/beets,jackwilsdon/beets,MyTunesFreeMusic/privacy-policy,kelvinhammond/beets,parapente/beets,mried/beets,dfc/beets,kareemallen/beets,dfc/beets,diego-plan9/beets,shamangeorge/beets,pkess/beets,mosesfistos1/beetbox,imsparsh/beets,artemutin/beets,untitaker/beets,Andypsamp/CODjunit,m-urban/beets,Kraymer/beets,lightwang1/beets,jackwilsdon/beets,Dishwishy/beets,beetbox/beets,asteven/beets,MyTunesFreeMusic/privacy-policy,kareemallen/beets,moodboom/beets,Kraymer/beets,beetbox/beets,gabrielaraujof/beets,pkess/beets,lightwang1/beets,kelvinhammond/beets,jcoady9/beets,marcuskrahl/beets,PierreRust/beets,Dishwishy/beets,Andypsamp/CODfinalJUNIT,LordSputnik/beets,shamangeorge/beets,PierreRust/beets,diego-plan9/beets,shanemikel/beets,jackwilsdon/beets,arabenjamin/beets,YetAnotherNerd/beets,pkess/beets,tima/beets,arabenjamin/beets,mosesfistos1/beetbox,kareemallen/beets,shanemikel/beets,MyTunesFreeMusic/privacy-policy,artemutin/beets,mried/beets,SusannaMaria/beets,ibmibmibm/beets,m-urban/beets,madmouser1/beets,jmwatte/beets,beetbox/beets,YetAnotherNerd/beets,sadatay/beets,tima/beets,Kraymer/beets,kelvinhammond/beets,m-urban/beets,LordSputnik/beets,asteven/beets,untitaker/beets,PierreRust/beets,xsteadfastx/beets,dfc/beets,ibmibmibm/beets,untitaker/beets,xsteadfastx/beets,parapente/beets,moodboom/beets,artemutin/beets,swt30/beets,YetAnotherNerd/beets,randybias/beets,parapente/beets,kelvinhammond/beets,kareemallen/beets,lengtche/beets,lengtche/beets,sampsyo/beets,SusannaMaria/beets,SusannaMaria/beets,parapente/beets,Dishwishy/beets,beetbox/beets,Andypsamp/CODjunit,swt30/beets,mosesfistos1/beetbox,pkess/beets,imsparsh/beets,imsparsh/beets,drm00/beets,jmwatte/beets,lengtche/beets,gabrielaraujof/beets,gabrielaraujof/beets,Andypsamp/CODfinalJUNIT,untitaker/beets,tima/beets,mried/beets,Dishwishy/beets,SusannaMaria/beets,sadatay/beets,marcuskrahl/beets,madmouser1/beets,madmouser1/beets,ruippeixotog/beets,imsparsh/beets,lightwang1/beets,jmwatte/beets,Andypsamp/CODjunit,jcoady9/beets,shanemikel/beets,ibmibmibm/beets,drm00/beets,sampsyo/beets,Freso/beets,ruippeixotog/beets,moodboom/beets,mathstuf/beets,Freso/beets,jmwatte/beets,drm00/beets,lightwang1/beets,Andypsamp/CODfinalJUNIT,mathstuf/beets,shamangeorge/beets,Andypsamp/CODjunit,ruippeixotog/beets,xsteadfastx/beets,mosesfistos1/beetbox,madmouser1/beets,Andypsamp/CODjunit,gabrielaraujof/beets,diego-plan9/beets,m-urban/beets,ibmibmibm/beets,swt30/beets,asteven/beets,arabenjamin/beets,dfc/beets,sadatay/beets,LordSputnik/beets,LordSputnik/beets,ruippeixotog/beets,swt30/beets,randybias/beets,randybias/beets,mathstuf/beets,marcuskrahl/beets,mried/beets,Freso/beets,Freso/beets,artemutin/beets,shanemikel/beets,marcuskrahl/beets