add C901 (function complexity)to flake8 ignore list
add C901 (function complexity)to flake8 ignore list

I'm adding this both as a TODO item and to work around flake8 preferring
global ($HOME) configuration over project

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