Planned work

• Support for better prompts (select, multi-select, etc.)
• Other simple UI components (e.g.: simple file tree)
• Testing tools -- Can we provide users with a good easy framework to test their CLI?
• Themes support -- How can users extend Formatter and/or select a theme?
• Strict Pyright -- Can this repo be entirely in strict mode?
• Better spinner interactions (capture and redirect stdout automatically)
• Better testing coverage (every parsing combination tested)