* cmd, consensus, core, miner: instatx clique for --dev * cmd, consensus, clique: support configurable --dev block times * cmd, core: allow --dev to use persistent storage too
* consensus/clique, internal/web3ext: support hash based API queries * consensus/clique: make RPC return types public
This PR is a prototype implementation of plugable consensus engines and the Clique PoA protocol ethereum/EIPs#225