Global degree does not change when changing significant edge value

[MeeshCompBio]

The global degree of genes are always representative of a z-score of 3, it should update when you change the significant edge score.

In [69]: cob = co.COB("W2691")                                                                                                                                                                                     [LOG] Mon Feb  5 16:33:41 2018 - Loading Expr table                                                                                                                                                                [LOG] Mon Feb  5 16:33:41 2018 - Building Expr Index                                                                                                                                                               [LOG] Mon Feb  5 16:33:41 2018 - Loading RefGen                                                                                                                                                                    [LOG] Mon Feb  5 16:33:41 2018 - Building Indices                                                                                                                                                                  [LOG] Mon Feb  5 16:33:41 2018 - Loading Coex table                                                                                                                                                                [LOG] Mon Feb  5 16:33:44 2018 - Loading Global Degree                                                                                                                                                             [LOG] Mon Feb  5 16:33:44 2018 - Loading Clusters                                                                                                                                                                  [LOG] Mon Feb  5 16:33:44 2018 - Building Indices
In [70]: Gene = cob.refgen.from_id("TRAESCS3D01G246000")
In [71]: cob.global_degree(Gene)
Out[71]: 120
In [72]: len(cob.neighbors(Gene, return_gene_set=True))
Out[72]: 120 
In [73]: cob.set_sig_edge_zscore(2.5)
In [76]: cob.global_degree(Gene)
Out[76]: 120
In [77]: len(cob.neighbors(Gene, return_gene_set=True))
Out[77]: 902