Proposal: Add conspicuously missing Functor instances for tuples

Henning Thielemann lemming at
Wed Feb 17 11:15:11 UTC 2016

On Tue, 19 Jan 2016, Edward Kmett wrote:

> +1 from me. 
> We routinely supply instances for tuples of up to 4 or 5 elements elsewhere. 

There are only liftA2 and liftA3 (supporting only (,) and (,,), 
respectively), how little is this? :-)

I like consistency, too, and thus propose to remove all Functor, Foldable, 
Traversable, Applicative instances from all tuples.

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