[Checkins] [zopefoundation/persistent] d1b5a2: Test Python 3.9.

[Michael Howitz]

  Branch: refs/heads/py39
  Home:   https://github.com/zopefoundation/persistent
  Commit: d1b5a2ad444e542ee336f05b81def5ef7ff23856
      https://github.com/zopefoundation/persistent/commit/d1b5a2ad444e542ee336f05b81def5ef7ff23856
  Author: Michael Howitz <mh at gocept.com>
  Date:   2020-02-14 (Fri, 14 Feb 2020)

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

  Log Message:
  -----------
  Test Python 3.9.

Workaround in TravisCI is no longer needed.


  Commit: 8046eac3f9170c3ffee0148b6a31f2c5f5483f6a
      https://github.com/zopefoundation/persistent/commit/8046eac3f9170c3ffee0148b6a31f2c5f5483f6a
  Author: Michael Howitz <mh at gocept.com>
  Date:   2020-02-14 (Fri, 14 Feb 2020)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Try to fix MacOS in TravisCI.


Compare: https://github.com/zopefoundation/persistent/compare/25025c997865...8046eac3f917