by cornernote » Thu Sep 27, 2012 13:24
github offers a history, so you can download older versions, and some mod devs keep links to old versions on the forum page.
i try to keep my mods working on the latest versions, and have no real desire to test old versions. you could possibly test the mods you want to use, find a version that works on 0.4.dev, and when you find some post them back on here to help others that are running that version.