[Checkins] [zopefoundation/zope.testrunner] 81a5dc: Drop conditional 'unittest2' dependency.

[GitHub]

  Branch: refs/heads/drop-unittest2
  Home:   https://github.com/zopefoundation/zope.testrunner
  Commit: 81a5dc564ceea70ea328c76a1866d1688be0a1cb
      https://github.com/zopefoundation/zope.testrunner/commit/81a5dc564ceea70ea328c76a1866d1688be0a1cb
  Author: Tres Seaver <tseaver at palladion.com>
  Date:   2016-06-20 (Mon, 20 Jun 2016)

  Changed paths:
    M CHANGES.rst
    M setup.py
    M src/zope/testrunner/runner.py
    M src/zope/testrunner/tests/test_doctest.py
    M src/zope/testrunner/tests/testrunner-ex-skip/sample_skipped_tests.py

  Log Message:
  -----------
  Drop conditional 'unittest2' dependency.

Redundant after dropping support for Python 2.6.

Closes #22.