[Checkins] [zopefoundation/ZopeUndo] b66f43: Enable coverage computation.

[Michael Howitz]

  Branch: refs/heads/update-versions
  Home:   https://github.com/zopefoundation/ZopeUndo
  Commit: b66f4333f24108a190f8c9ddc8b8b1e081563f80
      https://github.com/zopefoundation/ZopeUndo/commit/b66f4333f24108a190f8c9ddc8b8b1e081563f80
  Author: Michael Howitz <mh at gocept.com>
  Date:   2019-04-11 (Thu, 11 Apr 2019)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Enable coverage computation.