He's working for Github I think?
http://www.fastcompany.com/3019917/d...-a-badass-team
I've seen him do "drive-by" updates to his addons if something breaks but it might take a couple months :P
If you open an issue on one of his repositories on Github I'm sure he'll see it.
Edit: Adding Engravings Issue tracker
https://github.com/TekNoLogic/Engravings/issues