exclusive link types. #8
Description
In the SEIR Covid-19 simulation, the generated random network contains both "friend" and "stranger" relationship links between individuals. It should be possible to somehow say "if a link of one types already exists, do not create a link of the other type". A work-around for this is to allow one and only one link between two network points, no matter what the link-type may be (instead of creating one link of type "friend" and one link of type "stranger").