Control Mapping

I was playing around with re-mapping controls (specifically swapping Q and A, and E and D, so Q and E strafe while A and D turn). I was able to remap the strafe to Q and E but there's no option to map turn in the controls settings, so now I can't turn the character.

There's also no obvious way to reset controls back to default, so I've had to uninstall and reinstall the game to get full controls/defaults back.