bytstringify extra cover_names in fetchart
bytstringify extra cover_names in fetchart

jcoady9/beets,beetbox/beets,pkess/beets,lengtche/beets,madmouser1/beets,diego-plan9/beets,MyTunesFreeMusic/privacy-policy,beetbox/beets,ibmibmibm/beets,artemutin/beets,MyTunesFreeMusic/privacy-policy,mosesfistos1/beetbox,sampsyo/beets,diego-plan9/beets,Kraymer/beets,shamangeorge/beets,pkess/beets,jackwilsdon/beets,pkess/beets,jcoady9/beets,madmouser1/beets,jackwilsdon/beets,SusannaMaria/beets,sampsyo/beets,MyTunesFreeMusic/privacy-policy,shamangeorge/beets,SusannaMaria/beets,diego-plan9/beets,artemutin/beets,mosesfistos1/beetbox,artemutin/beets,lengtche/beets,Kraymer/beets,xsteadfastx/beets,jackwilsdon/beets,diego-plan9/beets,jcoady9/beets,SusannaMaria/beets,beetbox/beets,Kraymer/beets,Kraymer/beets,beetbox/beets,ibmibmibm/beets,pkess/beets,lengtche/beets,ibmibmibm/beets,lengtche/beets,xsteadfastx/beets,madmouser1/beets,mosesfistos1/beetbox,ibmibmibm/beets,xsteadfastx/beets,shamangeorge/beets,SusannaMaria/beets,sampsyo/beets,xsteadfastx/beets,madmouser1/beets,sampsyo/beets,jackwilsdon/beets,jcoady9/beets,shamangeorge/beets,mosesfistos1/beetbox,MyTunesFreeMusic/privacy-policy,artemutin/beets