[Checkins] [zopefoundation/Zope] e9ffc9: Add 2.13.27 release.

[GitHub]

  Branch: refs/heads/gh-pages
  Home:   https://github.com/zopefoundation/Zope
  Commit: e9ffc94f7f118d0e158780e1497f66c5563a0ce8
      https://github.com/zopefoundation/Zope/commit/e9ffc94f7f118d0e158780e1497f66c5563a0ce8
  Author: Michael Howitz <mh at gocept.com>
  Date:   2018-01-27 (Sat, 27 Jan 2018)

  Changed paths:
    A .gitignore
    M README.md
    M build_index.sh
    M releases/master/versions-prod.cfg

  Log Message:
  -----------
  Add 2.13.27 release.