I would be careful using PastryKit. I know after John's article when some people hosted un-minified versions on GitHub they were soon met with takedown notices

I would be careful using PastryKit. I know after John's article when some people hosted un-minified versions on GitHub they were soon met with takedown notices from Apple. They may have decided they can't stop everyone un-minifying it but I can't see them letting anyone make any money off using it. Doesn't stop you learning from it though.