Add Bind instances for Cofree/CofreeT #190
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Same behavior as the
Monadinstances, but with weaker superclass constraints:(Alt f, Apply f)rather thanAlternative f.It looks like this instance used to exist, but with a constraint of just
(Functor f). I haven't bisected to find where it went away but I assume the reason was related to #36. This new instance with the stronger constraint should be okay.