@hackage rmonad0.4.1

A library for restricted monads based on associated datatypes. This allows datatypes such as Set to be made into monads. Users can either use the NoImplicitPrelude extension and use Control.RMonad directly, or use Control.RMonad.AsMonad with the embed and unEmbed combinators to use the normal Prelude monad operations. The 0.4 release mainly adds support for monad transformers. The dependency on the transformers package may be replaced by mtl if it seems likely that mtl will stay the standard for some time to come.