add theming
better formatting of pre tags

fixed display issue on some terminals (double underline)

fix crates.io install

accessibility: update toc cursor
other fixes

added support for links, mouse, wide unicode characters

adds initial support for bold/italic inline styles

• --meta and --toc switches
• view progress / metadata in app
• save progress for multiple files
• line wrapped search highlighting

note: the save file format has changed, you will lose your save progress

add bookmarks, cli width option (characters per line)