[Checkins] [zopefoundation/zope.app.dependable] b4ecdc: Modernize Python versions

[Jürgen Gmach]

  Branch: refs/heads/mod-python
  Home:   https://github.com/zopefoundation/zope.app.dependable
  Commit: b4ecdc3aecfa095922f94220c6cb7d42593f1c74
      https://github.com/zopefoundation/zope.app.dependable/commit/b4ecdc3aecfa095922f94220c6cb7d42593f1c74
  Author: Jürgen Gmach <juergen.gmach at googlemail.com>
  Date:   2020-05-14 (Thu, 14 May 2020)

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

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

- Add support for Python 3.8.

- Drop support for Python 3.4.

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