* Block gas limit contract
Lower gas limit if TxPermission.limitBlockGas.
Call blockGasLimit before every block.
Make the block gas limit contract a separate config option.
Add `info` level logging of block gas limit switching
block-gas-limit subcrate and responses to review comments
simplified call_contract_before
moved block_gas_limit_contract_transitions to AuRa params
removed call_contract_before
Update and fix test_verify_block.
Remove some unused imports and functions.
* Move gas limit override check to verify_block_basic.
Co-authored-by: Andreas Fackler <afck@users.noreply.github.com>
