scalaz/scalaz — pull request #140 by xuwei-k (2012-08-27 22:08:01+00:00)
Title: use type alias options

just use following type alias

https://github.com/scalaz/scalaz/blob/3c85729441ce1ea0a4029d890790565e52c9fa00/core/src/main/scala/scalaz/package.scala#L156-159