Release 2.8.0

This is a feature release for Ethereal. This version of Ethereal uses EIP-1559 for its transactions, which has resulted in a number of changes:

• the --gasprice and --max-gasprice options have been removed from relevant transactions
• there is a new option --priority-fee-per-gas that sets the priority fee paid for transactions. This defaults to 1.5 Gwei
• there is a new option --max-fee-per-gas that limits the total fee per gas (fee plus priority fee) that will be sent for any transaction. This defaults to 200 Gwei

Use of EIP-1559 streamlines the sending of transactions by not requiring the user to guess a good gas price, which should make transaction-related work easier. Because this is the first release that supports EIP-1559 it is possible that there are user experience issues; please report any issues to the github issues list