New version of https://github.com/yangosoft/cpputils to include new features and to learn C++23
- Futex and shared memory futex implementation based on Eli Bendersky Mutex https://eli.thegreenplace.net/2018/basics-of-futexes/ implementation of the Ulrich Drepper's Futexes are Tricky paper
- Shared memory wrapper for POSIX
- UDP and TCP socket client
- UDP and TCP socket server