[Checkins] [zopefoundation/zope.datetime] c251ad: Drop Python 3.4 support, add Python 3.7 support.

[Jürgen Gmach]

  Branch: refs/heads/update-py-versions
  Home:   https://github.com/zopefoundation/zope.datetime
  Commit: c251ad3f2e9fcdbb2fe0345a4ecdb41da3b6f083
      https://github.com/zopefoundation/zope.datetime/commit/c251ad3f2e9fcdbb2fe0345a4ecdb41da3b6f083
  Author: Jürgen Gmach <juergen.gmach at apis.de>
  Date:   2019-04-09 (Tue, 09 Apr 2019)

  Changed paths:
    M .travis.yml
    M CHANGES.rst
    M setup.py
    M tox.ini

  Log Message:
  -----------
  Drop Python 3.4 support, add Python 3.7 support.

This closes #8

modified:   .travis.yml
modified:   CHANGES.rst
modified:   setup.py
odified:   tox.ini