If anyone is interested I made a quick video showing how to add the Bootstrap nav menu back in Sage 8.2.0, should you want to do so. (I hope it’s okay to share this here?)
Adding the navigation back is super easy, so easy that it doesn’t really warrant a video, but I like making videos, so hopefully this is helpful to someone.
(Note: I had a small glitch at the 2:30 mark as I didn’t add the path correctly in the includes, so sorry about that, but I recover quickly.)
Video - https://vimeo.com/126609067
Nav walker - https://github.com/twittem/wp-bootstrap-navwalker
Bootstrap nav gist - https://gist.github.com/retlehs/1b49f6c00d5140962d56