A Functor like instance for Many

[louispan]

Add a way to map over every item in a Many, potentially changing the type

[louispan]

@dwincort I've uploaded http://hackage.haskell.org/package/data-diverse-1.0.0.0 with this feature.

See

data-diverse/test/Data/Diverse/ManySpec.hs

Line 346 in 4aeb4c1

it "every item can be mapped into a different type in a Functor-like fashion with using 'afmap'" $ do

for example usage

The implementation was actually quite simple:

data-diverse/src/Data/Diverse/Many/Internal.hs

Line 618 in 4aeb4c1

instance ( Reiterate c (a ': as)

I also did a lot of internal changes, but surprisingly the external api didn't change.

Fixed in commit 84c06a3