[Checkins] [zopefoundation/zope.app.container] 6a6498: Modernize Python versions.

[Jürgen Gmach]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/zope.app.container
  Commit: 6a6498653d4936801676ae7124627bf7b5905e59
      https://github.com/zopefoundation/zope.app.container/commit/6a6498653d4936801676ae7124627bf7b5905e59
  Author: Jürgen Gmach <juergen.gmach at googlemail.com>
  Date:   2019-10-02 (Wed, 02 Oct 2019)

  Changed paths:
    M .travis.yml
    M CHANGES.rst
    M setup.py
    M tox.ini

  Log Message:
  -----------
  Modernize Python versions.

- drop support for Python 3.4
- add support for Python 3.7 and 3.8
- add support for PyPy3
- update version of PyPy
- bump version

modified:   .travis.yml
modified:   CHANGES.rst
modified:   setup.py
modified:   tox.ini