v0.6.4

Added:

• IGBetaWeightedGabrielGraph for computing the β value where each edge of a lune-based β-skeleton would disappear (experimental function).
• IGModularityMatrix gives the modularity matrix of a network.
• IGCanonicalLabeledGraph creates a canonical representation of a labeled graph without changing vertex names. Graphs which are considered equivalent by IGSameGraphQ have the same canonical representation. It is intended for removing duplicate graphs using DeleteDuplicatesBy.
• IGCanonicalEdgeList creates a canonical representation of an edge list, in a manner similar to IGCanonicalLabeledGraph.

Other:

• Documentation improvements
• Significant performance improvements for the calculation of lune and circle based β skeletons when using large β values.