Cumulated statics on multi-repo environement

[GPuigRenart]

we are working in a multi-repo environment. Is there a way to cumulate graphs apart from survival? Cohorts will be the most interesting for me

[erikbern]

There's PR here that I realized has been sitting there for a while. Let me see what I can do to get it merged: #70

[AlexanderWillner]

As #70 has not been merged, this issue is not really closed, is it?