igraph 0.9.10

Added

• igraph_reverse_edges() reverses the specified edges in the graph while preserving all attributes.

Changed

• The IGRAPH_ARPACK_PROD error code is no longer used. Instead, the specific error encountered while doing matrix multiplication is reported.
• XML external entities are not resolved any more when parsing GraphML files to prevent XML external entity injection (XXE) attacks. Standard XML entities like < or " still work.

Fixed

• Fixed incorrect results from igraph_local_scan_1_ecount() when the graph was directed but the mode was IGRAPH_ALL and some nodes had loop edges. See issue #2092.
• Fixed incorrect counting of self-loops in igraph_local_scan_neighborhood_ecount() when the graph was undirected.
• In some rare edge cases, igraph_pagerank() with the ARPACK method and igraph_hub_score() / igraph_authority_score() could return incorrect results. The problem could be detected by checking that the returned eigenvalue is not negative. See issue #2090.
• igraph_permute_vertices() now checks for out-of-range indices and duplicates in the permutation vector.
• igraph_create() now checks for non-finite vertex indices in the edges vector.
• igraph_eigenvector_centrality() would return incorrect scores when some weights were negative.
• igraph_es_seq() and igraph_ess_seq() did not include the to vertex in the sequence.
• igraph_eit_create() and igraph_vit_create() now check that all edge/vertex indices are in range when creating iterators from sequence-type selectors.
• igraph_grg_game() now validates its arguments.
• igraph_layout_drl() and its 3D version now validate their inputs.
• igraph_layout_kamada_kawai(), igraph_layout_fruchterman_reingold(), igraph_layout_drl(), as well as their 3D versions now check for non-positive weights.
• igraph_asymmetric_preference_game() interpreted its type_dist_matrix argument incorrectly.
• Fixed incorrect result of igraph_community_spinglass() for null and singleton graphs.
• igraph_layout_gem() does not crash any more for graphs with only a single vertex.
• igraph_bridges() no longer uses recursion and thus is no longer prone to stack overflow.
• Include paths of dependent packages would be specified incorrectly in some environments.