Spaces are added to imports of operators which start with `#`

[neongreen]

The following line

import Foo ((#|), (#%), (|#), (%#))

is formatted by stylish-haskell as follows:

import           Foo (( #% ), ( #| ), (%#), (|#))

This probably has something to do with -XMagicHash, even though -XMagicHash isn't enabled anymore.