Feature Request: Reselecting item

[xxtesaxx]

I use Segmentio together with a UICollectionView. I use the UIScrollViewDelegate to calculate if I want to "snap" to a given cell. I then pass the value to Segmentios selectedItemIndex to let it handle all my UI updating like setting the navigation bar title.

If the "new value" is the same as the selected value though, valueDidChange does not get fired because obviously the value did not change. I instead call segmentio.valueDidChange?(segmentio, segmentio.selectedSegmentioIndex) which seems a little bit unnecessary to me.

How about a SegmentioSelectionCallback for "valueSelected" as well?

How should it look like?

    open var valueSelected: SegmentioSelectionCallback?
    open var selectedSegmentioIndex = -1 {
        didSet {
            if selectedSegmentioIndex != oldValue {
                reloadSegmentio()
                valueDidChange?(self, selectedSegmentioIndex)
            }
            valueSelected?(self, selectedSegmentioIndex)
        }
    }

...

segmentio.valueSelected = { segmentio, index in ... }