0.4

• remove ErrorT instance for compatibility with transformers-0.6 and mtl-2.3

0.3.5

• compatibility with GHC 8.8

0.3.4

• MonadFail instance for EquivT

0.3.3

• compatibility with GHC 8.6

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')