v1.5.1

Added

• maxPriorityFeePerGas and maxFeePerGas now included in _txInputFormatter (#4217)
• If maxPriorityFeePerGas of maxFeePerGas present _txInputFormatter deletes tx.gasPrice (fixes #4211) (#4217)
• Add block tag support (e.g. latest, pending, earliest) to getFeeHistory (#4224)
• Support for EIP-1559 to web3.eth.sendTransaction (#4220)