[Checkins] [zopefoundation/DocumentTemplate] 23593f: Use Python 3.8 final on Travis CI

[Marius Gedminas]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/DocumentTemplate
  Commit: 23593fb76eb6f31114fa906fd08bf0f3f958b294
      https://github.com/zopefoundation/DocumentTemplate/commit/23593fb76eb6f31114fa906fd08bf0f3f958b294
  Author: Marius Gedminas <marius at gedmin.as>
  Date:   2019-10-23 (Wed, 23 Oct 2019)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Use Python 3.8 final on Travis CI