Accept and ignore comm_open message
Accept and ignore comm_open message

Jupyter sends this message which is crashing IfSharp. Just ignoring it
seems work fine.

FilippoPolo/IfSharp,luminescent/IfSharp,BayardRock/IfSharp,BayardRock/IfSharp,fradav/IfSharp,luminescent/IfSharp,FilippoPolo/IfSharp,npmurphy/IfSharp,ChinaQuants/IfSharp,ChinaQuants/IfSharp,npmurphy/IfSharp,FilippoPolo/IfSharp,ChinaQuants/IfSharp,luminescent/IfSharp,BayardRock/IfSharp,npmurphy/IfSharp,FilippoPolo/IfSharp,fradav/IfSharp,fradav/IfSharp,luminescent/IfSharp,ChinaQuants/IfSharp,BayardRock/IfSharp,fradav/IfSharp,npmurphy/IfSharp