Import and export lists are inconsistent

I don't put a space before the parenthesis in things like `Applicative(..)`. stylish adds one in imports, but leaves my module exports unaffected, leading to style inconsistency in the same file.

I'd like:
- An option to not have this space added
- The same style used in exports and imports, in either configuration

Start by locating the formatter logic for import and module export lists, then run it on examples such as `Applicative(..)` in both contexts. Done means a configuration option controls the space before the parenthesis and the selected style is applied consistently to imports and exports.

Written by the indexing model from the issue text.