insert edges in edgesI into tables/array of i may insert to top level table or upsize bottom tables upsize table or move from array to table if (deg +

require: edges is updated and packed, tables are already resized, before top tables moves

is_low_now is true if v has delta nghbors moving from L to H, otherwise from H to L require: v is not using array, edges is updated and packed, before

Clears the edge array.

update degrees and low degrees from inserts/deletes

only keep lowD because D can be computed

edgesID is the insertions and deletions of w in updates update the c1-c5 counts for wedges centered at w called after marking inserts and deletions, s