Folks 0.9.5 No Longer Supports Multiple IndividualAggregator Instances

Folks 0.9.5 drops support for multiple IndividualAggregator instances. Therefore, in order to retrieve the default aggregator singleton, clients should use the new IndividualAggregator.dup constructor, as the default IndividualAggregator.with_backend_store and IndividualAggregator constructors are now deprecated. Moreover, among the bugs fixed in Folks 0.9.5, we can mention a crash when removing an individual with two aggregators instantiated, and an issue with folks_small_set_copy(), which doesn’t always return a value.