Add simple white balance filter that modifies red/blue shift in the image using curves to control temperature
Move vibrance into its own filter
Fix typo in vibrance description
Simplify vibrance filter
Merge upstream changes
Add flip filter to do simple vertical and horizontal flips
Merge branch 'master' of https://github.com/evanw/glfx.js
Instead of using texture-space coordinates, provide an option to shift texture to center over 0,0 to make operations like rotate/flip/scale
Add simple rotate filter
Add simple zoom filter to zoom in and out of the texture
Add grid filter to draw grids over a filter, useful for rule of thirds and straightening tilted photos
Merge branch 'master' of https://github.com/evanw/glfx.js
Update white balance filter to modify dark, mid, and light tones rather than just the mid-tones
Fix bug where wrong width/height were used to determine whether to resize canvas during draw method
Add crop filter, which should be used along with the width/height parameters of the canvas draw method
Modify matrix filter to use internal texture width/height so that changing the canvas width/height doesn't affect the filter, which would cause skew effects
Add a simple move filter to translate/pan the texture around.
Add x, y, width, height paramters when getting pixel array from WebGL canvas
Remove debug message
Add preserveDrawingBuffer option to webgl context so that drawImage and readPixels calls will continue to work as browsers implement this feature