crypto: more type annotations
crypto: more type annotations

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