[Lab] Save sessions

[mwpowellhtx]

Similar to other such web resources, I'm not sure would it be possible to save sessions. That would be awesome, and a great way to sort of pencil up a grammar, get some things verified and such, across peers, other channels, and without necessarily needing to adopt the package reference and so on.

[parrt]

I actually started working on a way to do that or you could even share with others but I just don't have time to work on this anymore.

[s97712]

Perhaps we can first implement a simple version that saves locally.