Framerate Capping - Feature Request

[snekyo]

I use a 60 Hz monitor, which works well with dhewm 3 as it has a cap of 60 fps. However, if somebody is using a 144 Hz monitor, I'm guessing the game will still be a 60 fps. This is why I would like a fps capping option, to cap the game at framerates like 35, 60, 144, uncapped, and maybe a few others.