added sample_pa_homophilic()
netUtils
bipartite_from_data_frame()
graph_from_multi_edgelist()
and
as_multi_adj()
structural_equivalence()
core_periphery()
sample_coreseq()
graph_cartesian()
and
graph_direct()
fast_cliques()
as_adj_list1()
and
as_adj_weighted()
clique_vertex_mat()