[Spiral] divideRects now takes a list of directions to split in
[Spiral] divideRects now takes a list of directions to split in

darcs-hash:20070524090211-db939-61c879bea31e548c7cc924d8d366d84bfc0353a3

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