[Checkins] [zopefoundation/z3c.coverage] 651607: Upgrade Python syntax with pyupgrade (#11)

[Hugo]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/z3c.coverage
  Commit: 6516078e6656d5c43663f1c50a074154aa3d842a
      https://github.com/zopefoundation/z3c.coverage/commit/6516078e6656d5c43663f1c50a074154aa3d842a
  Author: Hugo <hugovk at users.noreply.github.com>
  Date:   2019-04-18 (Thu, 18 Apr 2019)

  Changed paths:
    M src/z3c/coverage/coveragediff.py
    M src/z3c/coverage/coveragereport.py

  Log Message:
  -----------
  Upgrade Python syntax with pyupgrade (#11)

see https://github.com/asottile/pyupgrade