Merge branch 'release/v1.1' into develop
Move tests into their own package
Naive conversion to using cliff

TODO: standardize output to use cliff logging
Convert to use cliff for output
Add development requirements file
Remove unused file: setup.cfg.md5
Merge branch 'feature/refactor-to-use-cliff' into develop
Set development version
Bump version to v2.0
Merge branch 'release/2.0'