i thought about that, but was afraid it would break other people code... that's up to @fiatjaf... what do you think?
If you break other people’s code with backwards incompatible things, kindly start a tracker here: https://github.com/nostrability/nostrability
If it helps, it use to return `[]byte` and khatru Blossom's API own example was broken until a couple of weeks ago. It's ultimately Fiatjaf's decision of course, but, from my perspective, feel free go for it.