[Checkins] [zopefoundation/ZConfig] 42a09a: add python 3.8 to tox, travis configs

[Fred Drake]

  Branch: refs/heads/fd-python38
  Home:   https://github.com/zopefoundation/ZConfig
  Commit: 42a09a17048fee4c6b880ea3fc215f6abe5b51eb
      https://github.com/zopefoundation/ZConfig/commit/42a09a17048fee4c6b880ea3fc215f6abe5b51eb
  Author: Fred Drake <fred.drake at keepertech.com>
  Date:   2019-09-17 (Tue, 17 Sep 2019)

  Changed paths:
    M .travis.yml
    M tox.ini

  Log Message:
  -----------
  add python 3.8 to tox, travis configs