phinze/homebrew-cask — pull request #2848 by lgarron (2014-02-10 13:46:08+00:00)
Title: Added TreeMaker 5.

The URL is "version-less", but Treemaker has has not been updated since April, 2006.
Thus, I think it's safe to consider this to be a "fixed" version for now and check the hash.