• Added support for navigation sections
• Added support for navigation expansion
• Added support for integrating table of contents into navigation
• Added support for auto-hiding header on scroll
• Added support for hiding navigation and table of contents per page
• Added support for arbitrary items in navigation tabs
• Refactored navigation tabs to simplify grouping behavior
• Fixed anchor offset for permalinks in Safari (partial revert)
• Fixed #2098: Active tab sometimes not highlighted correctly
• Improved appearance for horizontal rulers
• Improved Spanish and Swedish translations