TGPDiscreteSlider ticksListener is not available from ObjectiveC

[VladNaimark]

I've fixed it by adding corresponding annotations and added pull request. Please approve and merge

[SyedIsmailAhamed]

I wonder without ticksLister how can it be integrated with Objective C, description page still says can be integrated with Objc. any idea when will this be approved and merged @VladNaimark ?