transaction.serialize_output: use namedtuple fields
transaction.serialize_output: use namedtuple fields

fujicoin/electrum-fjc,fujicoin/electrum-fjc,pooler/electrum-ltc,neocogent/electrum,neocogent/electrum,pooler/electrum-ltc,vialectrum/vialectrum,spesmilo/electrum,wakiyamap/electrum-mona,vialectrum/vialectrum,wakiyamap/electrum-mona,wakiyamap/electrum-mona,pooler/electrum-ltc,spesmilo/electrum,vialectrum/vialectrum,spesmilo/electrum,fujicoin/electrum-fjc,spesmilo/electrum,wakiyamap/electrum-mona,pooler/electrum-ltc,neocogent/electrum