[Checkins] [zopefoundation/z3c.recipe.tag] fa6764: The new .travis.yml wants tox -e lint

[Marius Gedminas]

  Branch: refs/heads/fix-coverage
  Home:   https://github.com/zopefoundation/z3c.recipe.tag
  Commit: fa6764e57d125d83437a9799f605d1a888b0b48e
      https://github.com/zopefoundation/z3c.recipe.tag/commit/fa6764e57d125d83437a9799f605d1a888b0b48e
  Author: Marius Gedminas <marius at gedmin.as>
  Date:   2020-05-15 (Fri, 15 May 2020)

  Changed paths:
    M MANIFEST.in
    M tox.ini

  Log Message:
  -----------
  The new .travis.yml wants tox -e lint

Give it one, based on
https://github.com/zopefoundation/meta/tree/master/config/pure-python