Feral Heart

So I have a widescreen 1680x1050 monitor. When I first ran feralheart.exe it popped up a little menu and I set my resolution there to my native desktop resolution(1680x1050). I accidentally changed it in game, and now I can't find a way to change it back...the ingame resolution menu only seems to go to 1024x768 or something like that....no widescreen resolutions...