s/private/internal/ - underscore prefix, not name mangling
Clarified deprecation plans around APIException
Merge pull request #28 from laterpay/feature/docstrings

PEP 257 testing
Revert "Merge pull request #28 from laterpay/feature/docstrings"

This reverts commit ca45ce4d0be0944ec7624af9e026386dca780d04, reversing
changes made to 2176c9beddebff49ec5118472c1af2008900bc5e.
Revert "Revert "Merge pull request #28 from laterpay/feature/docstrings""

This reverts commit dfb58c7cd6fa8cef841afd8649c0b3ff093c419e.