* Implement a threadpool
* int and SomeUnsignedInt ...
* Type conversion for windows SynchronizationBarrier
* Use the latest MacOS 11, Big Sur API (jan 2021) for MacOS futexes, Github action offers MacOS 12 and can test them
* bench need posix timer not available on windows and darwin futex
* Windows: nimble exec empty line is an error, Mac: use defined(osx) instead of defined(macos)
* file rename
* okay, that's the last one hopefully
* deactivate stealHalf for now
