[Checkins] [zopefoundation/zope.i18nmessageid] 9d4230: Add support for Python 3.8

[Marius Gedminas]

  Branch: refs/heads/py38
  Home:   https://github.com/zopefoundation/zope.i18nmessageid
  Commit: 9d4230e088c848b7a355e06253956c765e7c7470
      https://github.com/zopefoundation/zope.i18nmessageid/commit/9d4230e088c848b7a355e06253956c765e7c7470
  Author: Marius Gedminas <marius at gedmin.as>
  Date:   2019-11-12 (Tue, 12 Nov 2019)

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

  Log Message:
  -----------
  Add support for Python 3.8

Also let's use the latest floating PyPy versions on Travis CI.