Changelog for equivalence-0.3.3

0.3.2 ----- * add Applicative constraints for backwards compatibility with GHC 7.8 0.3.1 ----- * use transformers-compat for backwards compatibility with older versions of transformers 0.3.0.1 ------- * add CHANGES.txt to .cabal file 0.3 --- * add suport for Control.Monad.Except (thus the new dependency constraint 'mtl >= 2.2.1')