zmq: deduplicate 'sequence' publisher message creation/sending
zmq: deduplicate 'sequence' publisher message creation/sending

pstratem/bitcoin,bitcoin/bitcoin,namecoin/namecore,dscotese/bitcoin,instagibbs/bitcoin,jambolo/bitcoin,AkioNak/bitcoin,bitcoin/bitcoin,qtumproject/qtum,pataquets/namecoin-core,fujicoin/fujicoin,ElementsProject/elements,sstone/bitcoin,JeremyRubin/bitcoin,particl/particl-core,kallewoof/bitcoin,qtumproject/qtum,domob1812/namecore,tecnovert/particl-core,qtumproject/qtum,cdecker/bitcoin,anditto/bitcoin,qtumproject/qtum,yenliangl/bitcoin,mm-s/bitcoin,apoelstra/bitcoin,fanquake/bitcoin,rnicoll/bitcoin,Xekyo/bitcoin,JeremyRubin/bitcoin,pstratem/bitcoin,Xekyo/bitcoin,cdecker/bitcoin,ElementsProject/elements,mm-s/bitcoin,kallewoof/bitcoin,n1bor/bitcoin,sipsorcery/bitcoin,GroestlCoin/GroestlCoin,ElementsProject/elements,andreaskern/bitcoin,namecoin/namecore,MarcoFalke/bitcoin,jambolo/bitcoin,particl/particl-core,bitcoinsSG/bitcoin,practicalswift/bitcoin,ajtowns/bitcoin,domob1812/bitcoin,fanquake/bitcoin,qtumproject/qtum,sipsorcery/bitcoin,jambolo/bitcoin,cdecker/bitcoin,mm-s/bitcoin,sipsorcery/bitcoin,rnicoll/bitcoin,fanquake/bitcoin,bitcoinknots/bitcoin,JeremyRubin/bitcoin,fujicoin/fujicoin,pstratem/bitcoin,yenliangl/bitcoin,prusnak/bitcoin,achow101/bitcoin,namecoin/namecoin-core,prusnak/bitcoin,jnewbery/bitcoin,anditto/bitcoin,rnicoll/bitcoin,MarcoFalke/bitcoin,jambolo/bitcoin,lateminer/bitcoin,apoelstra/bitcoin,instagibbs/bitcoin,particl/particl-core,jlopp/statoshi,dscotese/bitcoin,namecoin/namecoin-core,jnewbery/bitcoin,particl/particl-core,instagibbs/bitcoin,practicalswift/bitcoin,bitcoinknots/bitcoin,MeshCollider/bitcoin,yenliangl/bitcoin,bitcoin/bitcoin,prusnak/bitcoin,bitcoinknots/bitcoin,apoelstra/bitcoin,EthanHeilman/bitcoin,kallewoof/bitcoin,n1bor/bitcoin,namecoin/namecoin-core,Sjors/bitcoin,AkioNak/bitcoin,Xekyo/bitcoin,mm-s/bitcoin,Sjors/bitcoin,namecoin/namecore,tecnovert/particl-core,ajtowns/bitcoin,lateminer/bitcoin,GroestlCoin/GroestlCoin,mruddy/bitcoin,MeshCollider/bitcoin,bitcoin/bitcoin,andreaskern/bitcoin,sstone/bitcoin,kallewoof/bitcoin,bitcoinknots/bitcoin,qtumproject/qtum,prusnak/bitcoin,jnewbery/bitcoin,JeremyRubin/bitcoin,particl/particl-core,lateminer/bitcoin,domob1812/bitcoin,GroestlCoin/bitcoin,practicalswift/bitcoin,GroestlCoin/bitcoin,jlopp/statoshi,pataquets/namecoin-core,namecoin/namecore,MeshCollider/bitcoin,pataquets/namecoin-core,n1bor/bitcoin,instagibbs/bitcoin,MarcoFalke/bitcoin,lateminer/bitcoin,jamesob/bitcoin,rnicoll/bitcoin,bitcoinknots/bitcoin,bitcoin/bitcoin,Sjors/bitcoin,domob1812/namecore,andreaskern/bitcoin,pataquets/namecoin-core,kallewoof/bitcoin,jlopp/statoshi,pstratem/bitcoin,fanquake/bitcoin,dscotese/bitcoin,domob1812/namecore,bitcoinsSG/bitcoin,ElementsProject/elements,domob1812/namecore,EthanHeilman/bitcoin,AkioNak/bitcoin,MarcoFalke/bitcoin,rnicoll/bitcoin,tecnovert/particl-core,tecnovert/particl-core,lateminer/bitcoin,ajtowns/bitcoin,fujicoin/fujicoin,anditto/bitcoin,achow101/bitcoin,andreaskern/bitcoin,dscotese/bitcoin,achow101/bitcoin,tecnovert/particl-core,GroestlCoin/GroestlCoin,ajtowns/bitcoin,namecoin/namecoin-core,fujicoin/fujicoin,MeshCollider/bitcoin,ajtowns/bitcoin,cdecker/bitcoin,domob1812/bitcoin,instagibbs/bitcoin,pstratem/bitcoin,fujicoin/fujicoin,GroestlCoin/bitcoin,instagibbs/bitcoin,AkioNak/bitcoin,jambolo/bitcoin,sipsorcery/bitcoin,cdecker/bitcoin,GroestlCoin/bitcoin,achow101/bitcoin,GroestlCoin/GroestlCoin,JeremyRubin/bitcoin,mruddy/bitcoin,bitcoinsSG/bitcoin,bitcoinsSG/bitcoin,jnewbery/bitcoin,n1bor/bitcoin,anditto/bitcoin,namecoin/namecoin-core,EthanHeilman/bitcoin,jlopp/statoshi,n1bor/bitcoin,dscotese/bitcoin,pataquets/namecoin-core,domob1812/bitcoin,particl/particl-core,domob1812/bitcoin,GroestlCoin/GroestlCoin,sstone/bitcoin,EthanHeilman/bitcoin,dscotese/bitcoin,jamesob/bitcoin,practicalswift/bitcoin,practicalswift/bitcoin,jamesob/bitcoin,kallewoof/bitcoin,mm-s/bitcoin,jlopp/statoshi,andreaskern/bitcoin,sipsorcery/bitcoin,Xekyo/bitcoin,mruddy/bitcoin,Sjors/bitcoin,bitcoinsSG/bitcoin,jnewbery/bitcoin,yenliangl/bitcoin,mruddy/bitcoin,prusnak/bitcoin,GroestlCoin/bitcoin,Xekyo/bitcoin,achow101/bitcoin,anditto/bitcoin,cdecker/bitcoin,namecoin/namecore,tecnovert/particl-core,apoelstra/bitcoin,ElementsProject/elements,prusnak/bitcoin,Xekyo/bitcoin,sstone/bitcoin,MeshCollider/bitcoin,pstratem/bitcoin,jamesob/bitcoin,fanquake/bitcoin,domob1812/namecore,jamesob/bitcoin,MeshCollider/bitcoin,yenliangl/bitcoin,MarcoFalke/bitcoin,yenliangl/bitcoin,jambolo/bitcoin,mruddy/bitcoin,apoelstra/bitcoin,EthanHeilman/bitcoin,lateminer/bitcoin,sstone/bitcoin,qtumproject/qtum,domob1812/bitcoin,sstone/bitcoin,AkioNak/bitcoin,domob1812/namecore,GroestlCoin/GroestlCoin,apoelstra/bitcoin,bitcoin/bitcoin,Sjors/bitcoin,namecoin/namecoin-core,anditto/bitcoin,mm-s/bitcoin,jlopp/statoshi,sipsorcery/bitcoin,namecoin/namecore,fanquake/bitcoin,mruddy/bitcoin,pataquets/namecoin-core,ElementsProject/elements,MarcoFalke/bitcoin,JeremyRubin/bitcoin,ajtowns/bitcoin,jamesob/bitcoin,AkioNak/bitcoin,rnicoll/bitcoin,GroestlCoin/bitcoin,practicalswift/bitcoin,andreaskern/bitcoin,bitcoinsSG/bitcoin,EthanHeilman/bitcoin,fujicoin/fujicoin,achow101/bitcoin,n1bor/bitcoin