ekmett/either — pull request #29 by RyanGlScott (2014-12-15 03:39:10+00:00)
Title: Use monad-control-1.0.0.0

Fix `either` to use `monad-control-1.0.0.0` or later, which uses associated type synonyms instead of associated data for `MonadTransControl` and `MonadBaseControl`.