performBatchUpdates method doesn't perform batch updates

[vldalx]

RxSwiftCommunity/RxDataSources#271 issue relates to this library as well.
The same problem with RxASTableAnimatedDataSource. It performs separately each update from the batch.

RxASDataSources/Sources/DataSources/ASTableNode+Rx/RxASTableAnimatedDataSource.swift

Lines 138 to 141 in 8f9e895

	for difference in differences {
	dataSource.setSections(difference.finalSections)
	tableNode.performBatchUpdates(difference, animated: self.animated, animationConfiguration: self.animationConfiguration)
	}

RxASDataSources/Sources/DataSources/ASTableNode+Rx/ASTableNode+SectionedViewType.swift

Lines 47 to 51 in 8f9e895

	public func performBatchUpdates<S>(_ changes: Changeset<S>, animated: Bool, animationConfiguration: RowAnimation) {
	self.performBatch(animated: animated, updates: {
	_performBatchUpdates(self, changes: changes, animationConfiguration: animationConfiguration)
	}, completion: nil)
	}

[vldalx]

The logic of the code should be similar to

tableNode.performBatchUpdates({
    for difference in differences {
        dataSource.setSections(difference.finalSections)
        _performBatchUpdates(tableNode, changes: difference, animationConfiguration: self.animationConfiguration)
    }
}, completion: nil)