[Checkins] [zopefoundation/Products.ZCatalog] 2a8582: Flake8 the code.

[Michael Howitz]

  Branch: refs/heads/flake8
  Home:   https://github.com/zopefoundation/Products.ZCatalog
  Commit: 2a8582fcdad4f9ebaf557cb213b240180e6e7111
      https://github.com/zopefoundation/Products.ZCatalog/commit/2a8582fcdad4f9ebaf557cb213b240180e6e7111
  Author: Michael Howitz <mh at gocept.com>
  Date:   2019-02-08 (Fri, 08 Feb 2019)

  Changed paths:
    M .travis.yml
    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.

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