Off-main-thread HTML parsing in Servo
I wish browser vendors would make stand at this point and say in 1 year all major browser engines will stop supporting document.write - it's horrible for developers to use and no-one I know advocates it - but I'm fairly sure ad networks still use it for no reason whatsoever.<p>The implementation of browsers is already difficult enough!  It's great to see the lengths Servo is going to to be compatible, but on this one I say warn developers and deprecate this feature that no-one in 2017 should ever use.