Revert "Revert "Merge pull request #28 from laterpay/feature/docstrings""

This reverts commit dfb58c7cd6fa8cef841afd8649c0b3ff093c419e.
Merge branch 'develop' into feature/docstrings
Disable "missing docstring" warnings.

Long-term, these are great; short-term, getting this in with _some_
docstrings beats the current state.
Add some proto-summaries to docstrings
Merge pull request #29 from laterpay/feature/docstrings

Docstrings + PEP 257 testing