Merge branch '107-remove-block-reward' into 'dev'

src/binutil.rs

src/consensus/mod.rs

src/consensus/pob/miner.rs

src/consensus/pob/mod.rs

src/execution/mod.rs

src/models/chainspec.rs

src/res/chainspec/clermont.ron

src/res/chainspec/ecomobicoin.ron

src/res/chainspec/goerli.ron

src/res/chainspec/local.ron

src/res/chainspec/mod.rs

src/res/chainspec/rinkeby.ron

src/res/chainspec/ropsten.ron

src/res/chainspec/sepolia.ron