Sep widget: support installation in vertical bars
Sep widget: support installation in vertical bars

Addresses #573

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