Several minimizations to the Arrange trait, which should now allow several more implementors. One restriction is that arrange_core is unavailable to collections whose keys do not implement ExchangeData+Hashable: to get this functionality one will need to use the freestanding function arrange_core rather than the self.arrange_core method.
Several minimizations to the
Arrangetrait, which should now allow several more implementors. One restriction is thatarrange_coreis unavailable to collections whose keys do not implementExchangeData+Hashable: to get this functionality one will need to use the freestanding functionarrange_corerather than theself.arrange_coremethod.