Now, instead of writing out incredibly dull things like
((modMask conf .|. controlMask .|. shiftMask, xK_F2), ...)
you can just write
("M-C-S-<F2>", ...)
Hooray!
Looking for suggestions on this module. Does it belong here? Is there a better
name? Should the additional* functions pass the modMask to their second
argument? etc.