v2.2.0

What's Changed

• Added missing opencv dependency by @Daethyra in #41
• this update is essentially just 2.1.0, which added colors and no-dither arguments by @Daethyra in #40, and it actually includes opencv-python-headless in the pyproject.toml file to ensure fresh transimage installations download all required dependencies.
• release 2.1.0 is obsolete

Full Changelog: v2.0.1...v2.2.0