THANK YOU: One of the most well written and useful coroutine libraries for c++20

[abdes]

This is not a bug report, but a thank you note for sharing such a useful and beautiful implementation of a coroutine library. I'm definitely learning a lot of things form it, even though I'm using it for much less of what it was built for. The structure is clear, the C++ code is of high quality, and some of the techniques you used for wrapping coroutines and making them usable are best practices to follow.

Thank you!.