Version 3.1.0 of canvasGUI is now available. Users will find that the new library is backwardly compatible so will work with any sketches using V3.0.0.
The biggest change is in the viewer control which allows the user to scroll through large images using scrollbars and has not been updated / changed since the first release of canvasGUI.
In 3.1.0 the user can choose between the default scrollbars or the new scrollpad (2D scrollbar). The sketch below shows the three styles available.
- standard scrollbars (top-left)
- square scrollpad (top-rght)
- proportional to and same aspect ratio to the viewer size (bottom centre)
This version also fixes some annoying bugs I discovered when updating the viewer control. 
Useful resources