Change alt+tab shortcut to alt+rarr
Refactor DocList#render
Improve ListFocus behavior
Make disabled docs list foldable
Always show disabled docs list
Show number of disable docs
Don't show disabled list title when no docs are disabled
Persist disabled docs list visibility state
Tweak intro message
Use String#remove
Tweak README.md and CONTRIBUTING.md
Tweak help page
Default cursor when hovering over sidebar title
Allow doc index pages to be indexed and tweak meta descriptions
Tweak SEO titles
Render doc list in index page html for search engines
Mention number of documentation in meta description
Update gem dependencies