Algorithm interfaces

Missing docstring for IncidenceGraphInterface. Check Documenter's build log for details.

Missing docstring for get_adjacent. Check Documenter's build log for details.

Missing docstring for maximum_matching. Check Documenter's build log for details.

Missing docstring for dulmage_mendelsohn. Check Documenter's build log for details.

Missing docstring for connected_components. Check Documenter's build log for details.