python-diff-match-patch-20200713-bp156.2.1

- Update to version 20200713
  * Pulls in upstream change to use raw strings for regex
  * Updates to how the package builds, tests, and runs lint
  * Uses PEP 517/518 metadata for build requirements/backend
  * Formatting improvements, including use of isort

- Provide/obsolete diff_match_patch package name as it is not
  matching up the pypi name

- Format with spec-cleaner
- Remove devel dependency
- Run the tests without setuptools

- Provide/obsolete diff_match_patch package name as it is not
  matching up the pypi name

- Format with spec-cleaner
- Remove devel dependency
- Run the tests without setuptools

- initial package for version 20181111.
- add make-tests-runable.patch to be able to run the tests