Support profile updates

It would be nice if BF could send profile update activities when h-card bio, photo, and link(s) change. I recently changed the h-card on my homepage and instances aware of me prior to that still have my old photo. You mentioned in chat that BF would need to poll for updates. I also wonder if an on-demand option could work via a webmention trigger? I have not thought through this in-depth, but maybe microformats like:

<a href="https://gregorlove.com" class="u-edit-of">updated profile</a>