0.4.1

• Added Day convolution under Data.Functor.Contravariant.Day.

0.3

• Added Backwards and Reverse instances for transformers 0.3
• Added instance (Functor f, Contravariant g) => Contravariant (Compose f g). (This is non-canonical, but is necessary to support other packages.)
• Added Functor instances to ComposeFC and ComposeCF for use when modeling phantom type parameters caused mixing Functor + Contravariant.