1 - there's a pull request to change that but the nip repo is slow
2 - This could also be changed. I think result would be better for all kinds
3 - Private zaps use a different method of encrypting the data 

 Where is the PR? Is Amber updated to the new way? 

 https://github.com/nostr-protocol/nips/pull/1341

I updated amber to the new way, the only call I didn't change yet is the return value from get_public_key 

 OK, looks like Amethyst has also changed it, and I imagine other clients like Voyage are also cool with it since Amber is changed, so I merged it.

@dluvian @Vitor Pamplona @fmar