2.0.0 Release Candidate 1

This is a pre-release build of 2.0.0 so I have something to use while I finish refactoring the RPM release tooling

1.4.0-maintenance

What's Changed

• Note that context managers are not thread-safe by @timlnx in #84
• Fix argparse integration requiring progressbar by @blochberger in #87
• Add click integration (closes #74) by @blochberger in #88
• Maintenance 1.4.0 by @timlnx in #108
• Add .readthedocs.yaml for RTD build configuration by @timlnx in #109
• Add sphinx_rtd_theme to doc-requirements.txt, remove unused sphinxcon… by @timlnx in #110

New Contributors

• @blochberger made their first contribution in #87

Full Changelog: 1.3.3.1...1.4.0.1