Jay, I don't think the author David spends much time in the fora here, and I know he's been diligently developing several other plugins in the https://wordpress.org/plugins/indieweb/ suite. If you're still interested, the base code for Bridgy Publish is is on GitHub https://github.com/dshanske/bridgy-publish, where you'll also find code for most other things IndieWeb too.

If you have questions or need help, you can find him on IRC via http://www.indiewebcamp.com. He and others there are more than happy to help!