The official STMicroelectronics Arduino core
I had not visited your Github previously and now I have to say that I like your programming style a lot. The information you have at
is very useful for all STM32 developers. There are so huge amount of details that I do wonder, what kind of quality assurance methods you have used to gain confidence that the information is correct.
I think the best QA in programming is peer review. Because I do not know if my code is correct or not. And the best way for peer review is small commits with no noise, and that these changes can be easily reviewed and tried out.