[Checkins] [zopefoundation/zopetoolkit] 2cf276: Update to a Python 3.9 compatible versions.

[Michael Howitz]

  Branch: refs/heads/py39
  Home:   https://github.com/zopefoundation/zopetoolkit
  Commit: 2cf276da543af96be4de39e1ea2e9c00724ffa7d
      https://github.com/zopefoundation/zopetoolkit/commit/2cf276da543af96be4de39e1ea2e9c00724ffa7d
  Author: Michael Howitz <mh at gocept.com>
  Date:   2020-02-14 (Fri, 14 Feb 2020)

  Changed paths:
    M ztk-versions.cfg

  Log Message:
  -----------
  Update to a Python 3.9 compatible versions.