Log Message:
py-setuptools: update to 39.2.0.

v39.2.0
-------

* #1359: Support using "file:" to load a PEP 440-compliant package \ 
version from
  a text file.
* #1360: Fixed issue with a mismatch between the name of the package and the
  name of the .dist-info file in wheel files
* #1365: Take the package_dir option into account when loading the version from
  a module attribute.
* #1353: Added coverage badge to README.
* #1356: Made small fixes to the developer guide documentation.
* #1357: Fixed warnings in documentation builds and started enforcing that the
  docs build without warnings in tox.
* #1376: Updated release process docs.
* #1343: The ``setuptools`` specific ``long_description_content_type``,
  ``project_urls`` and ``provides_extras`` fields are now set consistently
  after any ``distutils`` ``setup_keywords`` calls, allowing them to override
  values.
* #1352: Added ``tox`` environment for documentation builds.
* #1354: Added ``towncrier`` for changelog managment.
* #1355: Add PR template.
* #1368: Fixed tests which failed without network connectivity.
* #1369: Added unit tests for PEP 425 compatibility tags support.
* #1372: Stop testing Python 3.3 in Travis CI, now that the latest version of
  ``wheel`` no longer installs on it.