The first thing I noticed when I opened the GitHub page was the lack of documentation. Then I opened the source files. No headers describing what each module does. No method headers. No code comments. Nothing that would let me get a feel of how well this could fit into my project without doing a lot of code reading...

Maybe I'm just an old fart and need to accept that this is the way code is written these days, but with my own projects I always tried to make sure that at least minimal documentation was available and that the code was easy to read and understand before releasing it to the world.