[graph-tool] Collecting marginals during or after equilibrate

Dear all, We have a doubt about good practices in collecting vertex marginals during equilibration. In the howto, collection is done with an additional mcmc_equilibrate step with force_niter set to the desired "precision" but in principle this can be done during a single mcmc_equilibrate after mcmc_sweep. We observed some differences (especially when we collect the marginals for groups at each level of the NSBM), so we wonder which would be preferred. Thanks d