[Checkins] [zopefoundation/zope.copy] 771afd: Add Python 3.6, drop Python 3.3

[GitHub]

  Branch: refs/heads/py36
  Home:   https://github.com/zopefoundation/zope.copy
  Commit: 771afd93129a4d9bd5ec1ce37437f6e09c7f43e6
      https://github.com/zopefoundation/zope.copy/commit/771afd93129a4d9bd5ec1ce37437f6e09c7f43e6
  Author: Jason Madden <jamadden at gmail.com>
  Date:   2017-07-31 (Mon, 31 Jul 2017)

  Changed paths:
    A .coveragerc
    M .gitignore
    M .travis.yml
    M CHANGES.rst
    M README.rst
    M setup.cfg
    M setup.py
    M src/zope/__init__.py
    M src/zope/copy/__init__.py
    M src/zope/copy/_compat.py
    M src/zope/copy/examples.py
    M src/zope/copy/interfaces.py
    M src/zope/copy/tests/test_copy.py
    M tox.ini

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

- Badges
- Enable coveralls
- 100% coverage
  - Simplify _compat.py and examples.py
- Run doctests in all tox environments and on Travis CI for all Python
  versions.
- Use zope.testrunner because of the namespace package issue.