replace Bound with the equivalent Direction2D
replace Bound with the equivalent Direction2D

Ignore-this: b1f1c256aba07f70918fe1d693c8087b

darcs-hash:20140501011540-1499c-a4630752cc7fcb87bbbdbd5b909c7b5316b14a31

yzhou61/xmonad-contrib,yzhou61/xmonad-contrib,yzhou61/xmonad-contrib