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igraph_get_shortest_path_astar() finds a shortest path with the A* algorithm.
igraph_vertex_coloring_greedy() now supports the DSatur heuristics (#2284, thanks to @professorcode1).
Changed
The test build target now only runs the unit tests, but it does not build them. In order to both build and run tests, use the check target, which continues to behave as before (PR #2291).
The experimental function igraph_distances_floyd_warshall() now has from and to parameters for choosing source and target vertices.
The experimental function igraph_distances_floyd_warshall() now has an additional method parameter to select a specific algorithm. A faster "Tree" variant of the Floyd-Warshall algorithm is now available (#2267, thanks to @rfulekjames).
Fixed
The Bellman-Ford shortest path finder is now interruptible.
The Floyd-Warshall shortest path finder is now interruptible.
Running CTest no longer builds the tests automatically, as this interfered with VSCode, which would invoke the ctest executable after configuring a project in order to determine test executables. Use the build_tests target to build the tests first, or use the check target to both build and run all unit tests (PR #2291).
Other
Improved the performance and memory usage of igraph_widest_path_widths_floyd_warshall().