v2.2.0

Added

• add harmonized_colors to --json flag (#53)
• add to_upper and to_lower filters
• add replace filter
• add set_lightness filter
• add colors_to_harmonize
• (config) change custom_keywords configuration syntax

Fixed

• move aur publish into aur.yml
• remove aur action in main.yml
• format harmonized_colors in dump_json (#53)

Other

• (readme) update features
• (readme) add arch install guide
• Merge pull request #58 from Ehllay/main
• Merge pull request #57 from InioX/dev
• remove error message when compiling template
• run clippy fix