v1.2.0

Added

• Added support for admonition notes (note, info, tip, warning, etc.) with themed styling.
• Added admonition icons with theme-aware coloring.
• Added admonition color configuration to all themes via viewer.ini files.
• Added _n_admonition, _n_admonition_title, _n_admonition_content CSS classes for admonition styling.
• Added markdown.extensions.admonition to Markdown extensions.
• Added memory leak prevention with cleanup_line_tokens() method in syntax highlighter.

Changed

• Improved view mode styling with updated margins and consistent spacing across all themes.
• Optimized highlighter performance using sets instead of lists for token lookups.

Fixed

• Removed trailing newlines from code blocks that caused extra empty lines in HTML rendering.
• Fixed font size updates now properly refresh view mode content.