[Doc] Add release notes for RPC changes
[Doc] Add release notes for RPC changes

npccoin/npccoin,PIVX-Project/PIVX,presstab/PIVX,npccoin/npccoin,Mrs-X/Darknet,PIVX-Project/PIVX,48thct2jtnf/P,Mrs-X/PIVX,presstab/PIVX,npccoin/npccoin,PIVX-Project/PIVX,Mrs-X/PIVX,48thct2jtnf/P,ColossusCoinXT/ColossusCoinXT,benzmuircroft/REWIRE.io,Mrs-X/Darknet,PIVX-Project/PIVX,PIVX-Project/PIVX,presstab/PIVX,48thct2jtnf/P,Bloom-Project/Bloom,Mrs-X/Darknet,PIVX-Project/PIVX,Bloom-Project/Bloom,ColossusCoinXT/ColossusCoinXT,benzmuircroft/REWIRE.io,48thct2jtnf/P,Darknet-Crypto/Darknet,PIVX-Project/PIVX,Darknet-Crypto/Darknet,Mrs-X/PIVX,npccoin/npccoin,Mrs-X/Darknet,PIVX-Project/PIVX,PIVX-Project/PIVX,npccoin/npccoin,Darknet-Crypto/Darknet,Darknet-Crypto/Darknet,benzmuircroft/REWIRE.io,presstab/PIVX,Bloom-Project/Bloom,presstab/PIVX,ColossusCoinXT/ColossusCoinXT,Bloom-Project/Bloom,benzmuircroft/REWIRE.io,benzmuircroft/REWIRE.io,ColossusCoinXT/ColossusCoinXT,Darknet-Crypto/Darknet,ColossusCoinXT/ColossusCoinXT,Mrs-X/PIVX,Mrs-X/Darknet,48thct2jtnf/P,Darknet-Crypto/Darknet,Mrs-X/Darknet,Bloom-Project/Bloom,benzmuircroft/REWIRE.io,Mrs-X/PIVX,npccoin/npccoin,ColossusCoinXT/ColossusCoinXT,Bloom-Project/Bloom,48thct2jtnf/P,presstab/PIVX,Mrs-X/PIVX