Support tintColor animations

[codeman7]

Currently animating the tintColor of a spritedAnimationView does not work. I'd like to use a sprite animation and animate the tint color.

Currently I use the following snippet:

 MDFSpritedAnimationView *animationView =
        [[MDFSpritedAnimationView alloc] initWithSpriteSheetImage:spriteSheetImage];
 animationView.tintColor = initialTintColor;

[UIView animateWithDuration:0.2 animations: { animationView.tintColor = finalTintColor }];
[animationView startAnimatingWithCompletion:^(BOOL finished) {
    [animationView removeFromSuperview];
}];

Expected behavior

The tint color animates

Actual behavior

The tint color jumps to the final tint color