[Checkins] [zopefoundation/zope.testing] 3fedb6: Drop Python <= 3.5, add Python 3.8

[Marius Gedminas]

  Branch: refs/heads/py38
  Home:   https://github.com/zopefoundation/zope.testing
  Commit: 3fedb625630bf18cd3810000b47400e5a3c3a76c
      https://github.com/zopefoundation/zope.testing/commit/3fedb625630bf18cd3810000b47400e5a3c3a76c
  Author: Marius Gedminas <marius at gedmin.as>
  Date:   2020-10-14 (Wed, 14 Oct 2020)

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

  Log Message:
  -----------
  Drop Python <= 3.5, add Python 3.8