[Checkins] [zopefoundation/Zope] cb261b: make "chameleon zope context wrapping" more faithf...

[Dieter Maurer]

  Branch: refs/heads/4.x
  Home:   https://github.com/zopefoundation/Zope
  Commit: cb261baa6f8c02f2aa3b5d1277f026123b33ca99
      https://github.com/zopefoundation/Zope/commit/cb261baa6f8c02f2aa3b5d1277f026123b33ca99
  Author: Dieter Maurer <d-maurer at users.noreply.github.com>
  Date:   2020-07-10 (Fri, 10 Jul 2020)

  Changed paths:
    M CHANGES.rst
    M src/Products/PageTemplates/engine.py
    M src/Products/PageTemplates/tests/testC2ZContext.py

  Log Message:
  -----------
  make "chameleon zope context wrapping" more faithfull (#873)

* faithful chameleon-zope context wrapper

* make flake8 happy

* rework chameleon/zope context integration

* fixed Python 3 incompatibilty