[Checkins] [zopefoundation/DocumentTemplate] 564041: - backport "Make ``ustr.ustr`` Python 3 compatible...

[Jens Vagelpohl]

  Branch: refs/heads/3.x
  Home:   https://github.com/zopefoundation/DocumentTemplate
  Commit: 564041984d095d572c0796808c7db6a21b492f86
      https://github.com/zopefoundation/DocumentTemplate/commit/564041984d095d572c0796808c7db6a21b492f86
  Author: Jens Vagelpohl <jens at netz.ooo>
  Date:   2020-10-27 (Tue, 27 Oct 2020)

  Changed paths:
    M .travis.yml
    M CHANGES.rst
    M src/DocumentTemplate/tests/testustr.py
    M src/DocumentTemplate/ustr.py
    M tox.ini

  Log Message:
  -----------
  - backport "Make ``ustr.ustr`` Python 3 compatible" from master