…deleted since last execution as part of metadata
To elaborate a bit more. In our design work on a reactive kernel, we worked really hard to find the minimal set of changes to a Jupyter frontend that would be required to support reactive kernels. We are pretty confident we got it down to these two requirements:
The exact and full reasons that these two things are required are a bit subtle. More than willing to go into it further, but describing it here would require more text than I have time for right now...