Should Coda support cancelling of transactions? We currently support the replacement of transaction via providing a new transaction with the same nonce but a higher fee. As far as I understand, however, other cryptocurrencies, such as ETH, support free and explicit transaction cancellation commands. This seems like a useful feature for when someone wants to remove a transaction but not replace it with a new one. For instance, perhaps someone makes a transaction with too high of a fee by accident and wants to replace it with a transaction with a lower fee. Or perhaps just sent a transaction by accident all together because of a bad wallet UX. Under the current setup, they would be out of luck in these situations.
Any thoughts or opinions on this? Any more details and examples about what other cryptocurrencies do?