👈 Launch a Binder on branch davidbrochart/jupyter_collaboration/pycrdt-websocket-v0.16.0

Not sure about Test Minimum Versions failing with:

The conflict is caused by:
    jupyter-server-ydoc 2.1.0rc0 depends on pycrdt
    jupyter-server-ydoc[test] 2.1.0rc0 depends on pycrdt
    jupyter-ydoc 2.1.2 depends on pycrdt<0.11.0 and >=0.10.1
    pycrdt-websocket 0.16.0 depends on pycrdt<0.13.0 and >=0.12.16

Well, that makes sense to me, jupyter-ydoc is pinned to older version of pycrdt than pycrdt-websocket. This ought to be fixed otherwise pip check will be failing for everyone and packagers will be sad.

jupyter-ydoc v3.0.5 pins pycrdt >=0.10.1,<0.13.0, so this is fine. But I guess the error means that we should not allow jupyter-ydoc v2.1.2 here, but require jupyter-ydoc >=3.0.5?

CI is passing now.

@krassowski I'm not sure we can merge this while in a RC process?

If we can wait a bit here I think it would be better.

I will go ahead and release a new version with this PR in.