Jan 29, 2025

@pmienk has updated the minimum compiler versions to clang16/xcode16, gcc12 (and still vc++2022. This allows us to remove hacks for certain C++17 features missing in clang/gcc (std::string and std::vector constexpr support, and full std::ranges support). There is still a lack of support in clang and gcc for parallel execution policy, and there is no projected timeframe for either. Support is present in gcc but requires an external library, is in progress for clang (experimental) and there is no information for xcode. So I've incorporated a single C++ file third party lib under its MIT license, which will give us std:: parallel execution policies for the functions that we use. Apart from that our last current language workaround is lack of full consteval support (C++20) in clang16. It's supported in xcode16, and clang17 should have it. At that point we'll be clean except for execution policy.