A double-tap UISegmentedControl subclass. Each segment functions as a discrete double-tap button. Based on http://stackoverflow.com/questions/17652773/how-to-deselect-a-segment-in-segmented-control-button-permanently-till-its-click?lq=1

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pod 'SLTDoubleTapSegmentedControl'

SLTDoubleTapSegmentedControl is licensed under the terms of the Apache 2.0 License. Please see the LICENSE file for full details.