The nethack wiki may be the best version to copy.
We have http://www.wiki.cataclysmdda.com/index.php?title=Template:Ver which is close, but it needs an update on where the version is posted -- for now it is relegated to wherever it is entered on the page, but I think a top or top-right box for this would be good. I've changed it to another infobox for now.
Hey, I noticed this, and the 'ver' template was used in page just to note that 'this has been changed in version 0.C, or the recent experimentals' It wasn't intended to be a DF like system where you listed an entire page as of being a certain version. Basically you broke the template, and didn't even bother to fix it in the places where it was used. Creating sentences like "This was changed in . To ...".
(I was trying to setup a df like system, but I first wanted to test it locally on an installation. But I got kinda frustrated and gave up. The Ver template was just intended as an indicator for what has changed between versions).
So, as you seem to have given up, and not are using the ver template anymore. Do you mind if I revert it back to the intended usage? Esp as all the documentation I wrote on the ver page just points out the previous usage.