Bootstrap 5.3.0 Compatibility

This release updates Sveltestrap to Bootstrap v5.3.0.

The notable changes to Sveltestrap are:

• Dark mode support in the Styles component
• Add underline option for Nav
• Add horizontal option for ListGroup
• Add custom divider support to Breadcrumb
• Updated Badge and Progress text colors to improve contrast and support dark mode
• Removed dark option for Carousel, Dropdown, and Table, use Bootstrap dark mode
• Removed white option for Button, use Bootstrap dark mode

This release (should) also fix Popperjs issues with Sveltekit 🙏