Matthew Seal

If you load the notebook in jupyter lab instead of jupyter classic it should upgrade the file format for you. Otherwise, you can try editing the ipynb notebook with a...

Yes most of the toolchains around ipynb files assume utf-8 encoding. That's a good point that it's not documented.

I'm a little late to the thread but I agree having a uuid in the notebook format would be hugely beneficial. It might be required to only change the ID...

That's a fairly compelling argument for ID management, with a similar usecase and well established precedent. It doesn't solve all problems, like users copying from a common starter notebook for...

Great idea. I'm 100% supportive of adding async calls to this library. I'll be unlikely to help with implementation / review, but other folks who have helped make jupyter_client and...

Just use `aiofiles`, don't try to reinvent that wheel on that one. It's complicated and error prone to try and re-write that behavior and native options don't provide sufficient capabilities...

If it helps, https://github.com/jupyter/notebook/issues/534 is a thread that needs to be reignited to add support for the source_hidden and outputs_hidden in classic (I get this requests a lot through papermill...

Maybe we should get weigh in from others before finalizing this in a release? I'd prefer we're all consistent and have the opinion hit nbformat close there-after. If there's not...

Yes, my comment was more suggesting a naming opinion for v5 if we want to unify more there for the future. I see what you're saying with conforming to v4...

> That way collapsed has precedence, but if jupyter.outputs_hidden is defined and collapsed isn't, I can still render appropriately, and as a bonus the new metadata is recognized in the...