1.0.3.1

• GHC 8.8.1/base-4.13 only compatibility release to support MonadFail

1.0.3.0

• Add support for MonadFail & Semigroup proposals by adding respective instances for P and Lex.

• Drop support for GHC versions prior to GHC 7.0.

• Remove -O2 from ghc-options.

1.0.2.0

• Add support for GHC 7.10 & base-4.8)

• Add missing Functor & Applicative instances for P and Lex monads needed for AMP compatibility.