Sphinx extension for selectable code block tabs — documentation

 This is an extension for the Sphinx documentation system. It adds a `tabs`
 directive for creating a widget with multiple tabs, allowing the user to
 switch between them. The individual tabs can be code blocks or general
 content.
 .
 This can be used to e.g. show a snippet in multiple languages, display
 instructions for alternative platforms, or switch between code and output.
 .
 This package installs the HTML documentation.