Overall, this was a great purchase. The code is well-structured and easy to navigate, and the documentation is comprehensive. I was able to get my project up and running quickly. There are a few minor bugs I encountered, mostly related to edge cases, but nothing major that couldn't be fixed with a bit of tweaking. The commenting could be improved in a few places to make it even clearer, but that's a minor quibble. I'd definitely recommend this to others needing a solid foundation for their development.