[Checkins] [zopefoundation/BTrees] 0726b8: Drop Python 3.4 support

[Marius Gedminas]

  Branch: refs/heads/drop-py34
  Home:   https://github.com/zopefoundation/BTrees
  Commit: 0726b8da405c9f2184944cda3500622722d6f1e2
      https://github.com/zopefoundation/BTrees/commit/0726b8da405c9f2184944cda3500622722d6f1e2
  Author: Marius Gedminas <marius at gedmin.as>
  Date:   2019-07-25 (Thu, 25 Jul 2019)

  Changed paths:
    M .gitignore
    M .manylinux-install.sh
    M .travis.yml
    M CHANGES.rst
    M appveyor.yml
    M setup.py
    M tox.ini

  Log Message:
  -----------
  Drop Python 3.4 support