Fix: setValue:animated:
Fix: setValue:animated:

Need to set popUpView frame after setting offset for animation to work
correctly.

3squared/ASValueTrackingSlider,elegion/ios-pods-ASValueTrackingSlider,alskipp/ASValueTrackingSlider,puvanarajan/ASValueTrackingSlider,shenyuan000/ASValueTrackingSlider,vince4/ASValueTrackingSlider,jianyelijun/ASValueTrackingSlider,vantientu1703/ASValueTrackingSlider,ezescaruli/ASValueTrackingSlider,hejunbinlan/ASValueTrackingSlider