v3.0 - Rewriting and improvements

[innocenzi]

• Usage of new plugin API
  • Require the plugin by its name instead of requiring a file
  • Configuration
    • Change the theme file (defaults to theme.config.js
    • Enable or disable specific variants
    • Customize variants' selectors
    • Select available presets (default themes)
• Integrate prefers-color-scheme variants plugin
  • dark, light and no-preference variants
  • Customizable selector name
• New color variants system
  • Integration with Tailwind's opacity utilities ([Feature request] Tailwind 1.4.0 support - new color opacity utilities #21) (needs Allow colors to be defined as closures tailwindlabs/tailwindcss#1676 to be merged)
  • Opacity variants
  • Color replacement variants
  • Custom closure-based variants
  • Object-based variants
• Presets (default themes)
  • Themes based on Nord
  • Themes based on Tailwind's colors
  • Default Tailwind colors
  • Default Tailwind UI colors
• Main features
  • Generation of a Tailwind configuration
  • Generation of required CSS variables
  • Allow custom CSS variables to extend Tailwind
    • Specify a path to a key to extend it
    • Allow prefixes for better naming
    • Convert multiple possible values to string
  • Multiple strategies (apply a theme per class, data attribute...)
    • Custom prefixes
• useTheme composable function for Vue
  • Gives reactive variables that contain the current theme
  • Can change the theme
• Documentation
  • Upgrade guide
  • Rewrite of the docs
  • Actual website
  • Tool to help make themes