use Tuple for partition results

[matthewleon]

The result structure for partition is a bit idiosyncratic:

partition :: forall a. (a -> Boolean) -> Array a -> { yes :: Array a, no :: Array a }

I get the impression that, over time, purescript APIs have been preferring Tuples for this kind of thing, rather than ad-hoc records. What do people think of either (breaking) switching the API to returning a Tuple, or making a partition' that returns Tuples?

For comparison, partition from the Haskell prelude:

partition :: (a -> Bool) -> [a] -> ([a], [a])

[hdgarrood]

Personally I prefer it how it is, see my comment in purescript/purescript-lists#117