Add a function to calculate the axis-aligned bounding box of a curve
Add the ability to request an entire rectangle of tiles to RenderScheduler, and make CanvasView use the new code
Add a function to calculate the best canvas zoom factor for the particular display.
Make renderscheduler compile again
Remap the input to CanvasView to make sense for CanvasTool
Add access to the internal canvas view
Automatically queue a re-render when a stroke is captured