[Checkins] [zopefoundation/Acquisition] a62179: Drop support for Python 2.6

[Jürgen Gmach]

  Branch: refs/heads/2.13
  Home:   https://github.com/zopefoundation/Acquisition
  Commit: a62179fcb8d349b2abaab7f5c847a8129bb3a8a9
      https://github.com/zopefoundation/Acquisition/commit/a62179fcb8d349b2abaab7f5c847a8129bb3a8a9
  Author: Jürgen Gmach <juergen.gmach at googlemail.com>
  Date:   2019-10-01 (Tue, 01 Oct 2019)

  Changed paths:
    M .travis.yml
    M CHANGES.txt
    M appveyor.yml
    M tox.ini

  Log Message:
  -----------
  Drop support for Python 2.6

- it is no longer supported
- Travis cannot download Python 2.6 any more

modified:   .travis.yml
modified:   CHANGES.txt
modified:   appveyor.yml
modified:   tox.ini