[Checkins] [zopefoundation/zope.testrunner] 8f2140: Ask for a newer PyPy3 on Travis

[GitHub]

  Branch: refs/heads/travis
  Home:   https://github.com/zopefoundation/zope.testrunner
  Commit: 8f21405546ba24f1335a68776adc21b15acda680
      https://github.com/zopefoundation/zope.testrunner/commit/8f21405546ba24f1335a68776adc21b15acda680
  Author: Marius Gedminas <marius at gedmin.as>
  Date:   2016-12-27 (Tue, 27 Dec 2016)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Ask for a newer PyPy3 on Travis

Because modern pip requires Python 3.3+ and checks sys.version explicitly.