I have a `CAGradientLayer` that I want to scale as the user drags there finger. However, when I set the frame, the layer animates to the new size. This happens with other properties, too, including start/endPoint.

Here's an example:

```
_gradient.frame = CGRectMake(0, 480-toHeight, 320, toHeight);

```

Yet, if I only call this when the user has dragged 10 or so pixels, the layer doesn't simply jump to the new size, it animates in a smooth but quick eased animation. I'm positive this isn't called in an animation block. To further debug, I also animate the frame of a `UIView` in the same scope and that doesn't animate.

I'm new to `CALayers`, so maybe I'm doing something way wrong.