This function simulates a dynamic network over one or multiple
             time steps for TERGMs or one or multiple cross-sectional network
             panels for ERGMs, for use in netsim modeling.
sim_nets_t1(x, dat, nsteps)An EpiModel object of class netest.
A master object passed through netsim.
For TERGMs, the number of time steps to simulate the network over; for ERGMs, the number of independent network panels to simulate.