Now an "add" method in Sim.
Now an "add" method in Sim.

This allows one to add new universes to the Sim. Now the ability to associate
multiple universes can actually be USED.

datreant/datreant.core,datreant/datreant,datreant/datreant,datreant/datreant.data,datreant/datreant.core,andreabedini/datreant,dotsdl/datreant