def something needs to be addressed client side, showing a huge warning when something has been edited. Still, I think that the best simple way to edit something on nostr should be a replace-this-note-with-that like amethyst does, nothing more complex than that.
i think there should be two options:
1. show old version and links at the bottom of it to reveal updated versions
2. show newest version and links at the bottom of it to reveal outdated versions
let user choose which default, and when the link is clicked, they can see all versions
oh yes and i forgot
each version has its own reply tree. keep them separated