Add changelog to track breaking changes

qtumproject · Jun 30, 2017 · a190ad1 · a190ad1
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+This document describes breaking changes between Qtum releases for both RPC APIs and for blockchain consensus.
+
+# Sparknet (Testnet v1)
+
+Initial release
+
+# TBD (Testnet v2)
+
+## Consensus Parameters/Rules
+
+## EVM Behavior
+
+* Made block.coinbase use block.vtx[1].vout[1] for the coinbase address of PoS blocks
+* Added check to coinbase to ensure that it is 0 if not a standard pubkeyhash address
+
+## RPC APIs
+