[Checkins] [zopefoundation/zopetoolkit] 6fdbd4: Try out Python 3.9

[Michael Howitz]

  Branch: refs/heads/py39
  Home:   https://github.com/zopefoundation/zopetoolkit
  Commit: 6fdbd4c19499ee3f07d6dac6cea7e7f4e88ec9ba
      https://github.com/zopefoundation/zopetoolkit/commit/6fdbd4c19499ee3f07d6dac6cea7e7f4e88ec9ba
  Author: Michael Howitz <mh at gocept.com>
  Date:   2020-02-14 (Fri, 14 Feb 2020)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Try out Python 3.9