Add toBlob function to Picture
Add a textureId number to brush and scatter events
Use textureId number to choose a texture when drawing
Make sure Closure compiler keeps Blob parameters
Add missing brush_textures.js script tags
Make some of brush scaling test strokes wavy
Add a name field to Picture
Add tests for Picture.toDataURL and Picture.toBlob
Minor fixes to Picture.toBlob test
Add a test for examining visual quality of textured brush scaling
Limit textured brush inside a circle
Use minRadius also for texturized brush to improve small brush scaling
Pass brush texture images into Picture from outside
Improve small brush rendering quality by using antialiasMult
Fixes to brush texture handling
Implement texturing in software rasterizer
Emulate GPU texturing more accurately in software
Optimize software rasterizer texturing
Add basic unit tests for SWMipmap
Improved tests for SWMipmap