Should the zap spec allow an optional a tag #[0] ? I'm using it to be able to zap NIP-23 long form content which are NIP-33 parameterised replaceable events. I'm including e, p, a, and relays tags in the zap request. Implemented in https://habla.news but only strike.army ln addresses are adding a tags to zap receipts at the moment. cc #[1]