v4.3.0

• Make method cancel_flow of edmondskarp only cancel the minimum amount of flow among all edges along a path, instead of the maximum, in order to avoid negative flows
• Use sort_unstable_by() instead of sort_unstable_by_key()
• New Grid example for from_coordinates() method
• Use RemSP and path splitting
• Remove optimization which gives worst benchmark results
• Integrate CodSpeed
• Update criterion requirement from 0.4.0 to 0.5.1
• Make Kuhn-Munkres benchmarks reproducible