jupyter_include_other_output doesn't seem to work

[matteha]

When setting the 'jupyter-include-other-output' variable to True, and connecting to the same kernel from 2 emacs sessions at the same time, I was expecting input/output from either emacs client to show in both REPL buffers, but this doesn't seem to be the case. The output is only shown in the emacs session in which the input is sent.

Definition: "jupyter-include-other-output is a variable defined in jupyter-client.el. Whether or not to handle IOPub messages from other clients. A Jupyter client can receive messages from other clients connected to the same kernel on the IOPub channel. You can choose to ignore these messages by setting jupyter-include-other-output to nil. If jupyter-include-other-output is non-nil, then any messages that are not associated with a request from a client are sent to the client's handler methods with a nil value for the request argument. To change the value of this variable for a particular client use jupyter-set."