VERSION 0.2.1 Fixed Build for CentOS 7 Added '_GLIBCXX_USE_CXX11_ABI' macro to file src/3rd-part/cpp-std-fwd/stdfwd.hpp . Build for GGC 7 Added support std::experimental::filesystem . Build for Apple Clang 12 Added support forward declaration in src/3rd-part/cpp-std-fwd/stdfwd.hpp for Apple Clang.