Remove redundant 'n >= 0' check from shift.  (from David Roundy's 'simplify shift, removing unneeded check.' patch)
Remove redundant 'n >= 0' check from shift.  (from David Roundy's 'simplify shift, removing unneeded check.' patch)
pjones/xmonad-test,xmonad/xmonad,ohlus/xmonad,ericssmith/xmonad