message: Added clause_pair as native type
diff: @@ -71,6 +71,7 @@ namespace eosio { namespace chain { namespace contracts {
  built_in_types.emplace("checksum160", pack_unpack<checksum160_type>());
  built_in_types.emplace("checksum256", pack_unpack<checksum256_type>());
  built_in_types.emplace("checksum512", pack_unpack<checksum512_type>());
  + built_in_types.emplace("clause_pair", pack_unpack<clause_pair>());
  built_in_types.emplace("transaction_id_type", pack_unpack<checksum256_type>());
  built_in_types.emplace("field_name", pack_unpack<field_name>());
  built_in_types.emplace("fixed_string32", pack_unpack<fixed_string32>());
  