Awesome. Just a heads up, I've already finished it and just submitted it. HOWEVER, the plugin has to be licensed as GPLv2, but it shouldn't affect your license (since it's just using your code as a library). I'd feel better about it (and it will probably be smoother sailing during the review process) if I could submit your names as authors on the plugin.

If you want to be listed as an author, just drop over to https://github.com/withinboredom/expounder-wordpress/tree/ma... and let me know your wordpress.org user names in an issue.