[Checkins] [zopefoundation/zope.interface] 3b99e6: Document persistency and equality

[Dieter Maurer]

  Branch: refs/heads/doc_persistency_equality#218
  Home:   https://github.com/zopefoundation/zope.interface
  Commit: 3b99e6d0972af28a1547262ccc3ee5519ed9ff68
      https://github.com/zopefoundation/zope.interface/commit/3b99e6d0972af28a1547262ccc3ee5519ed9ff68
  Author: dieter <dieter at handshake.de>
  Date:   2020-10-16 (Fri, 16 Oct 2020)

  Changed paths:
    M CHANGES.rst
    M docs/README.rst

  Log Message:
  -----------
  Document persistency and equality