[Checkins] [zopefoundation/ZEO] 4a95ed: document ZEO protocol 5

[GitHub]

  Branch: refs/heads/byteserver
  Home:   https://github.com/zopefoundation/ZEO
  Commit: 4a95ed5043efb355bf6c86854f94643127d16a9a
      https://github.com/zopefoundation/ZEO/commit/4a95ed5043efb355bf6c86854f94643127d16a9a
  Author: Jim Fulton <jim at zope.com>
  Date:   2016-11-29 (Tue, 29 Nov 2016)

  Changed paths:
    M src/ZEO/interfaces.py

  Log Message:
  -----------
  document ZEO protocol 5

In preparation for documenting protocol 501.