Function is_trail

include/utf8cpp/core.h:69–72

    }
    template<typename octet_type>
    inline bool is_trail(octet_type oc)
    {
        return ((utf8::internal::mask8(oc) >> 6) == 0x2);
    }

    template <typename u16>
    inline bool is_lead_surrogate(u16 cp)