Remove "keyevents" alias in document.createEvent
Remove "keyevents" alias in document.createEvent

See https://github.com/whatwg/dom/pull/178 and https://github.com/whatwg/dom/issues/148.

fiftin/jsdom,Zirro/jsdom,nicolashenry/jsdom,snuggs/jsdom,Sebmaster/jsdom,tmpvar/jsdom,Sebmaster/jsdom,fiftin/jsdom,mzgol/jsdom,Joris-van-der-Wel/jsdom,tmpvar/jsdom,mzgol/jsdom,snuggs/jsdom,Joris-van-der-Wel/jsdom,Joris-van-der-Wel/jsdom,fiftin/jsdom,Sebmaster/jsdom,mzgol/jsdom,Zirro/jsdom,nicolashenry/jsdom,nicolashenry/jsdom