- I write a wrong CMakeLists.txt so the generated utf8 string is wrong.
- Fixed in CMakeLists.txt. But still remove all utf8 string literal heading becasue it is not compatible with my code under C++ 20 standard.
- switch to CMake build system and delete original project files because Visual Studio supports CMake project debugging.
- there is a UTF-8 bug for library after switching, but I don't know why it happends. maybe fixed in future.
