[Checkins] [zopefoundation/Zope] ddc90f: Add 5.0 release.

[Michael Howitz]

  Branch: refs/heads/gh-pages
  Home:   https://github.com/zopefoundation/Zope
  Commit: ddc90f6de123fc365cf061f2411d74ff7257dae3
      https://github.com/zopefoundation/Zope/commit/ddc90f6de123fc365cf061f2411d74ff7257dae3
  Author: Michael Howitz <mh at gocept.com>
  Date:   2020-10-08 (Thu, 08 Oct 2020)

  Changed paths:
    M README.md
    M releases/4.x/versions-prod.cfg
    A releases/5.0/constraints.txt
    A releases/5.0/requirements-full.txt
    A releases/5.0/versions-prod.cfg
    A releases/5.0/versions.cfg
    M releases/master/constraints.txt
    M releases/master/requirements-full.txt
    M releases/master/versions-prod.cfg

  Log Message:
  -----------
  Add 5.0 release.