Existential quantification disappears in type declarations after applying stylish-haskell

[vks4git]

Stylish-haskell removes existential quantifications from type declarations:

-- before
data Foo = forall (a :: *) . Bar a
-- OR
data Foo = forall a . Bar a

-- after, in both cases
data Foo
  = Bar a

I used the latest commit from master.