- Introduced new CSS and JS files for Pi Day, Pride, Rain, and Storm effects.
- Updated existing seasonal styles (e.g., Halloween, Hearts, Resurrection) to improve performance with 'contain: layout paint'.
- Enhanced animations for seasonal effects, including adjustments to keyframes and element creation logic.
- Added configuration options for new effects in the main seasonals.js file.
- Updated test-site.html to include new seasonal options in the dropdown.
Enhanced JavaScript files for autumn, christmas, easter, fireworks, halloween, hearts, santa, snowfall, snowflakes, and snowstorm to support configuration options via window.SeasonalsPluginConfig.
Added automatic theme selection based on date in README.md.
