[Checkins] [zopefoundation/Products.ZCatalog] c72b73: Flake8 the code. (#52)

[Michael Howitz]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/Products.ZCatalog
  Commit: c72b73dd26b300dad87e242dd9a63388ed0ee1a7
      https://github.com/zopefoundation/Products.ZCatalog/commit/c72b73dd26b300dad87e242dd9a63388ed0ee1a7
  Author: Michael Howitz <mh at gocept.com>
  Date:   2019-02-09 (Sat, 09 Feb 2019)

  Changed paths:
    M .travis.yml
    M CHANGES.rst
    M setup.cfg
    M setup.py
    M src/Products/PluginIndexes/DateRangeIndex/tests.py
    M src/Products/ZCTextIndex/BaseIndex.py
    M src/Products/ZCTextIndex/ZCTextIndex.py
    M src/Products/ZCTextIndex/tests/testZCTextIndex.py
    M src/Products/ZCatalog/ProgressHandler.py
    M src/Products/ZCatalog/ZCatalog.py
    M src/Products/ZCatalog/ZCatalogIndexes.py

  Log Message:
  -----------
  Flake8 the code. (#52)

Including using the more modern style of writing binary operators at the beginning of the line.