I’ve just updated this topic to reflect some refactoring that’s been done to this component.
Previously this component added an “unanswered” button to the nav, but we’ve added a little more functionality by switching this to a dropdown.
Old version, for reference:
If you’re looking to update to the new version, you can do so from admin > customize > themes, but be sure that you’ve updated Discourse first. The new dropdown required a minor change in Discourse to enable the “answered” filter.