This doesn't work like I wanted it to, but it's too cool to just delete.

gistfile1.cpp

            template<typename T>
            operator typename std::enable_if<std::is_arithmetic<T>::value && !std::is_floating_point<T>::value && !std::is_same<T, bool>::value, T>::type() const noexcept
            {
                return static_cast<T>(static_cast<json_int_t>(value));
            }