Splitting summary and following line

[Pierre-Sassoulas]

With the following code:

    def other_inner():
        """A docstring with a sentence ending with dot. And another one
        continuing later."""

The result would be:

    def other_inner():
        """A docstring with a sentence ending with dot.

        And another one continuing later."""

Could be named SplitSummaryAndDocstringFormatter and splits on periods?

See original discussion : #23 (comment)