0.4.1.0

• Move Boltzmann sampler modules to another package: boltzmann-samplers

0.4.0.0

• Check well-formedness of constructor distributions at compile time.
• No longer support GHC 7.10.3 (the above feature relies on Generic information which does not exist before GHC 8)

0.3.0.0

• Support GHC 7.10.3
• Replace TypeApplications with ad-hoc data types in genericArbitraryFrequency'/genericArbitrary'