Update python-yaql to version 3.0.0 / rev 15 via SR 1231829
https://build.opensuse.org/request/show/1231829
by user dirkmueller + anag+factory
- update to version 3.0.0
- Use py3 as the default runtime for tox
- Update python classifier in setup.cfg
- Publish release notes
- Restore Python 3.6/7 support
- Replace assertItemsEqual with assertCountEqual
- [community goal] Update contributor documentation
- Stop using deprecated 'message' attribute in Exception
- Drop direct execution of run.py
- Remove format function
- Update CI to use unversioned jobs template
- Bump hacking
- Migrate from testr to stestr
- Remove translation sections from setup.cfg
- Remove shebang from setup.py
- setup.cfg: Replace dashes by underscores