to the new cool style imitating other successful open
software movements.
But all my navbars are the same navbar. The point of the new
style is to make information readily available.
We will want multiple button bars in the navbar, and possibly a
related materials sidebar. Or perhaps simply link pages.
We also need to change the introductory paragraph in every page
to the abstract style.
and a banner.
Broke all my existing markdown builds, because I
have a hundred files that do not fit the new machinery
And now I have to provide navbars for each directory,
and update the mkdocs.sh in each directory
And add a recursive invocation of mkdocs in subdirectories
