update release notes for 2.0
update release notes for 2.0

imrehg/electrum,cryptapus/electrum-uno,pooler/electrum-ltc,wakiyamap/electrum-mona,procrasti/electrum,lbryio/lbryum,molecular/electrum,dashpay/electrum-dash,pooler/electrum-ltc,molecular/electrum,vialectrum/vialectrum,argentumproject/electrum-arg,dashpay/electrum-dash,aasiutin/electrum,pooler/electrum-ltc,digitalbitbox/electrum,vialectrum/vialectrum,argentumproject/electrum-arg,neocogent/electrum,fujicoin/electrum-fjc,romanz/electrum,procrasti/electrum,imrehg/electrum,dashpay/electrum-dash,fyookball/electrum,vertcoin/electrum-vtc,cryptapus/electrum-myr,cryptapus/electrum-uno,protonn/Electrum-Cash,kyuupichan/electrum,FairCoinTeam/electrum-fair,digitalbitbox/electrum,wakiyamap/electrum-mona,pknight007/electrum-vtc,spesmilo/electrum,aasiutin/electrum,asfin/electrum,cryptapus/electrum,dabura667/electrum,aasiutin/electrum,cryptapus/electrum,neocogent/electrum,fyookball/electrum,protonn/Electrum-Cash,romanz/electrum,fireduck64/electrum,molecular/electrum,spesmilo/electrum,vertcoin/electrum-vtc,molecular/electrum,cryptapus/electrum-uno,neocogent/electrum,FairCoinTeam/electrum-fair,cryptapus/electrum,vertcoin/electrum-vtc,dashpay/electrum-dash,pknight007/electrum-vtc,pknight007/electrum-vtc,spesmilo/electrum,digitalbitbox/electrum,cryptapus/electrum-myr,cryptapus/electrum-uno,procrasti/electrum,dabura667/electrum,kyuupichan/electrum,FairCoinTeam/electrum-fair,wakiyamap/electrum-mona,protonn/Electrum-Cash,wakiyamap/electrum-mona,dabura667/electrum,cryptapus/electrum-myr,asfin/electrum,digitalbitbox/electrum,fyookball/electrum,vertcoin/electrum-vtc,pooler/electrum-ltc,kyuupichan/electrum,FairCoinTeam/electrum-fair,aasiutin/electrum,cryptapus/electrum-myr,protonn/Electrum-Cash,vialectrum/vialectrum,argentumproject/electrum-arg,asfin/electrum,imrehg/electrum,fireduck64/electrum,lbryio/lbryum,imrehg/electrum,fujicoin/electrum-fjc,procrasti/electrum,fujicoin/electrum-fjc,pknight007/electrum-vtc,spesmilo/electrum,romanz/electrum,fireduck64/electrum,dabura667/electrum,fireduck64/electrum,argentumproject/electrum-arg