fix: wrap multi-paragraph long descriptions

[weibullguy]

This pull request fixes the problem with docformatter not wrapping long descriptions that have multiple paragraphs.

Closes #127

[coveralls]

Pull Request Test Coverage Report for Build 3801746655

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
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• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 0.0%

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Totals
Change from base Build 3798397844:	0.0%
Covered Lines:	0
Relevant Lines:	0

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💛 - Coveralls