[Checkins] [zopefoundation/Products.ZCatalog] 06ac78: Add support for Python 3.9.

[Michael Howitz]

  Branch: refs/heads/support-python3.9
  Home:   https://github.com/zopefoundation/Products.ZCatalog
  Commit: 06ac78584e904b4c2907821a0a383562464c5423
      https://github.com/zopefoundation/Products.ZCatalog/commit/06ac78584e904b4c2907821a0a383562464c5423
  Author: Michael Howitz <mh at gocept.com>
  Date:   2020-10-07 (Wed, 07 Oct 2020)

  Changed paths:
    M .travis.yml
    M CHANGES.rst
    M MANIFEST.in
    R bootstrap.py
    M buildout.cfg
    M setup.cfg
    M setup.py
    M tox.ini

  Log Message:
  -----------
  Add support for Python 3.9.