[Checkins] [zopefoundation/Persistence] e56ac3: Drop support for Python 3.4.

[Michael Howitz]

  Branch: refs/heads/drop-py34
  Home:   https://github.com/zopefoundation/Persistence
  Commit: e56ac325cb7a0d638138d2eed64ee9039abe0a36
      https://github.com/zopefoundation/Persistence/commit/e56ac325cb7a0d638138d2eed64ee9039abe0a36
  Author: Michael Howitz <mh at gocept.com>
  Date:   2019-02-27 (Wed, 27 Feb 2019)

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

  Log Message:
  -----------
  Drop support for Python 3.4.

It is broken on TravisCI.