This is an attempt at preserving the development history of Gruber’s Markdown.
The master branch contains each release of Markdown as a separate commit.
The make-repo script in this branch creates the contents of master from the collection of tarballs and Zip files on this branch.
I downloaded all the releases to which I could still find links in the archive of the Markdown mailing list, but that leaves me with a wildly incomplete set of files. If you have (or can point me to) any others, please share.