initialize Qtile._drag, also check if it is None to prevent a crash
initialize Qtile._drag, also check if it is None to prevent a crash

qtile/qtile,kynikos/qtile,jdowner/qtile,tych0/qtile,kiniou/qtile,dequis/qtile,zordsdavini/qtile,kopchik/qtile,andrewyoung1991/qtile,de-vri-es/qtile,apinsard/qtile,encukou/qtile,ramnes/qtile,soulchainer/qtile,w1ndy/qtile,EndPointCorp/qtile,nxnfufunezn/qtile,jdowner/qtile,cortesi/qtile,cortesi/qtile,w1ndy/qtile,rxcomm/qtile,nxnfufunezn/qtile,de-vri-es/qtile,dequis/qtile,StephenBarnes/qtile,xplv/qtile,kiniou/qtile,aniruddhkanojia/qtile,xplv/qtile,kseistrup/qtile,farebord/qtile,himaaaatti/qtile,kopchik/qtile,EndPointCorp/qtile,soulchainer/qtile,tych0/qtile,apinsard/qtile,ramnes/qtile,flacjacket/qtile,himaaaatti/qtile,frostidaho/qtile,flacjacket/qtile,aniruddhkanojia/qtile,encukou/qtile,andrewyoung1991/qtile,farebord/qtile,kseistrup/qtile,kynikos/qtile,frostidaho/qtile,rxcomm/qtile,StephenBarnes/qtile,zordsdavini/qtile,qtile/qtile