Release 2013-12-04a

New Effects/Transforms
- Layers - Blend more than two source nodes. Use this for normal blend mode. For other blend modes, use "blend" effect, which still only supports two source nodes.
- Simplex Noise generator. Similar to Perlin noise, but a little simpler and faster.
- Camera Shake transform. Uses simplex noise to shake the image in two dimensions plus rotation. (example included)