Nameof v0.9.1

Release v0.9.1

• Less bin size and overhead reduction, thanks @rollbear

• nameof and nameof_type return static_string convertible to std::string_view or std::string.

• Add error msg unsupported compiler.

• Marco NAMEOF_ENUM_SUPPORTED and NAMEOF_TYPE_SUPPORTED to check is compiler compatibility.

• Fix type cast for unsigned enum.