ekmett/free — pull request #43 by vklj (2014-02-28 15:47:25+00:00)
Title: Proofs for Applicative, Monad, MonadTrans instances of CofreeT.

In response to [comment in issue 41](https://github.com/ekmett/free/pull/41#issuecomment-36176010).

Includes proof of all laws for each instance, and consistency between the Monad and the Applicative implementations.

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