How would you feel about a PR adding one or more Jupyter notebooks to demonstrate the use of the library with inline graphical outputs? github renders notebooks natively, so they could serve as useful examples even for those who don't use Jupyter.

The new numpy/PIL/matplotlib/PIL/etc. interoperability would work well with this since we can use these existing libraries to render image results directly. We also often write images directly from pyvips into jpeg byte strings and then b64encode them for inline src= in <img> tags to render images in ipywidgets HTML tags. Having working examples of these kinds of things would be quite helpful in my opinion.