improve browser WS support detection
improve browser WS support detection

mcfletch/AutobahnPython,iffy/AutobahnPython,wrapp/AutobahnPython,dash-dash/AutobahnPython,oberstet/autobahn-python,mcfletch/AutobahnPython,flyser/AutobahnPython,crossbario/autobahn-python,iffy/AutobahnPython,wrapp/AutobahnPython,meejah/AutobahnPython,tavendo/AutobahnPython,boonedox/AutobahnPython,magnux/AutobahnPython,rapyuta/autobahn_rce,leedm777/AutobahnPython,dash-dash/AutobahnPython,hzruandd/AutobahnPython,D3f0/AutobahnPython,leedm777/AutobahnPython,RyanHope/AutobahnPython,cachedout/AutobahnPython,boonedox/AutobahnPython,dash-dash/AutobahnPython,ewollesen/AutobahnPython,leedm777/AutobahnPython,rapyuta/autobahn_rce,crossbario/autobahn-python,inirudebwoy/AutobahnPython,iffy/AutobahnPython,nucular/AutobahnPython,ttimon7/AutobahnPython,ewollesen/AutobahnPython,magnux/AutobahnPython,D3f0/AutobahnPython,bencharb/AutobahnPython,cachedout/AutobahnPython,dash-dash/AutobahnPython,crossbario/autobahn-python,oberstet/autobahn-python,Geoion/AutobahnPython,jvdm/AutobahnPython,wrapp/AutobahnPython,claws/AutobahnPython,oberstet/autobahn-python,D3f0/AutobahnPython,rapyuta/autobahn_rce,rapyuta/autobahn_rce,schoonc/AutobahnPython,tomwire/AutobahnPython,claws/AutobahnPython,iffy/AutobahnPython,flyser/AutobahnPython,markope/AutobahnPython,luhn/AutobahnPython,Jenselme/AutobahnPython,boonedox/AutobahnPython,flyser/AutobahnPython