Is there an analog to Wikipedia's "Recent Changes" page, for GitHub wikis? That is, not to display the history for one page, but to show the history across the entire wiki?
The best way is to clone the wiki as a git repo onto your local machine, and then use git log and its variants to look at the various commits.
git log --name-only shows you which commits touched which pages
Currently the only way to interact with the page is to click the checkbox on either one or two revisions, and then click the "compare revisions" button (example).
But it feels very clunky and less-featureful than almost any other history page.
Only limited portions of history are visible on each page, and it's not possible to compare revisions on other "newer" / "older" pages of history without modifying the .../_compare/... URL by hand.
aside — I did a long search of all of GitHub's public repos, and I couldn't find the source code that produces this page.