Add an alpha parameter to canvasUtil.dualStroke
Add support for marking pictures as saved
Add support for controlled rotation for brush
Make BrushTipMover able to handle corners
Add RasterImportEvent for importing bitmap images
Handle the possibility of asynchronous loading of imported bitmaps
Better quality filtering for images
Make alphaForNBlends not get stuck in a loop if n < 1.0
Make picture parsing asynchronous