[Checkins] [zopefoundation/zope.untrustedpython] 3a4ffe: Drop support for Python 2.6.

[Jürgen Gmach]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/zope.untrustedpython
  Commit: 3a4ffe4cf5bff51bea9466f4d892fbbd4014cf0d
      https://github.com/zopefoundation/zope.untrustedpython/commit/3a4ffe4cf5bff51bea9466f4d892fbbd4014cf0d
  Author: Jürgen Gmach <juergen.gmach at apis.de>
  Date:   2019-04-11 (Thu, 11 Apr 2019)

  Changed paths:
    M .travis.yml
    M CHANGES.rst
    M setup.py
    M tox.ini

  Log Message:
  -----------
  Drop support for Python 2.6.

- bumped to new major version as Centos 6 still supports Python 2.6.

modified:   .travis.yml
modified:   CHANGES.rst
modified:   setup.py
modified:   tox.ini