Changelog for haskell-to-elm

Unreleased changes

0.2.0.0

• Merged the HasElmType and HasElmDefinition classes
• Merged the HasElmDecoder and HasElmDecoderDefinition classes
• Merged the HasElmEncoder and HasElmEncoderDefinition classes

0.1.0.1

• Tightened generics-sop bounds to < 0.5.0

0.1.0.0

• Initial release