Fri Jan 16 07:16:24 PST 2009 Ross Paterson <ross at soi.city.ac.uk>
* add Monoid laws
M ./Data/Monoid.hs -1 +11
View patch online:
http://darcs.haskell.org/packages/base/_darcs/patches/20090116151624-b47d3-8cf50ceb42c316f897da28ce74ff22ac23b1b30c.gz