make wallet.is_change faster
make wallet.is_change faster

spesmilo/electrum,neocogent/electrum,spesmilo/electrum,vialectrum/vialectrum,spesmilo/electrum,vialectrum/vialectrum,asfin/electrum,pooler/electrum-ltc,pooler/electrum-ltc,romanz/electrum,neocogent/electrum,wakiyamap/electrum-mona,fujicoin/electrum-fjc,neocogent/electrum,spesmilo/electrum,vialectrum/vialectrum,wakiyamap/electrum-mona,asfin/electrum,fujicoin/electrum-fjc,romanz/electrum,romanz/electrum,kyuupichan/electrum,pooler/electrum-ltc,kyuupichan/electrum,cryptapus/electrum,cryptapus/electrum,asfin/electrum,wakiyamap/electrum-mona,cryptapus/electrum,wakiyamap/electrum-mona,kyuupichan/electrum,fujicoin/electrum-fjc,pooler/electrum-ltc