[Checkins] [zopefoundation/zope.contenttype] 142772: Add Python 3.6, drop Python 3.3.

[GitHub]

  Branch: refs/heads/py36
  Home:   https://github.com/zopefoundation/zope.contenttype
  Commit: 1427723cc0c68aae829bc5a53962840939570ee8
      https://github.com/zopefoundation/zope.contenttype/commit/1427723cc0c68aae829bc5a53962840939570ee8
  Author: Jason Madden <jamadden at gmail.com>
  Date:   2017-08-03 (Thu, 03 Aug 2017)

  Changed paths:
    A .coveragerc
    M .gitignore
    M .travis.yml
    M CHANGES.rst
    M MANIFEST.in
    M README.rst
    M setup.cfg
    M setup.py
    M src/zope/__init__.py
    M src/zope/contenttype/__init__.py
    M src/zope/contenttype/parse.py
    M src/zope/contenttype/tests/testContentTypes.py
    M src/zope/contenttype/tests/test_parse.py
    M tox.ini

  Log Message:
  -----------
  Add Python 3.6, drop Python 3.3.

- Badges
- Add coverage environment and coveralls
  - 100% coverage
    - Some simplifications to help that, including using
      print_function for simpler parity on Py2/Py3, and not rewriting
      the _token_match function at runtime (presumably this was to
      delay compiling a regex at import time, but other regexes are
      already being compiled now at import time, so the hit is minor)