Do you have the alpha for MC 1.7.10? I've been looking for a mod like this for a long time, but the inventory bug is really annoying :/ I wouldn't mind if it's incomplete, if that bug is solved and everything else works like the latest download here.
EDIT: Have you thought about making the project Open Source? Maybe someone can continue your work. This is a really useful mod, something that should have been in the base game.
The only problem with this mod, is it doesn't show matching key conflicts, which is very annoying as it can get very hectic of keeping track of which keys aren't configured.
Also, When I try and open my inventory with e it works but however, when I try to use e to close it, it just reopens it.
Oh, that's because in gui key press was false oops.
the only other problem I find is the (E) key likes to toggle really fast for inventory so you either have to quick tap the key or hit (ESC) to get out of the inventory. that and some keys your supposed to hold down for mod items to work (such as a grappling hook in Immersive Engineering that allows you to glide across power lines and cables as long as your holding the button down but with this mod installed it immediately kicks you off the cable), would be nice for that to get fixed.