Proposal: Add IsList instance for ZipList

[David Feuer]

foo = getZipList $ [f,g,h] <$> [a,b,c] <*> [d,e,i]

looks a lot better than

bar = getZipList $ ZipList [f,g,h] <$> ZipList [a,b,c] <*> ZipList [d,e,i]