[Checkins] [zopefoundation/AccessControl] 172ade: - trying new appveyor config

[Jens Vagelpohl]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/AccessControl
  Commit: 172ade611a98350ce00194982419b7fa19935872
      https://github.com/zopefoundation/AccessControl/commit/172ade611a98350ce00194982419b7fa19935872
  Author: Jens Vagelpohl <jens at netz.ooo>
  Date:   2019-04-10 (Wed, 10 Apr 2019)

  Changed paths:
    M appveyor.yml

  Log Message:
  -----------
  - trying new appveyor config