What is PermanentUserData and any documentation about it?

[raine]

How to use Y.PermanentUserData?

I need to communicate this better. Everything that is not documented in the Yjs readme is not stable. The PermanentUserData feature works but I plan to improve it and I don’t want to give the intention that I will support this implementation in the future. I think that with the addition of Sets in Yjs we can represent PermanentUserData much more efficiently. This is their use case: They track insertions: Users produce changes using their client_ids (random integers that we use to generate u…