=====================
- Restructure the factory drawers, allowing different shapes in SVG image
factories as well.
- Add a ``--factory-drawer`` option to the ``qr`` console script.
- Optimize the output for the ``SVGPathImage`` factory (more than 30% reduction
in file sizes).
- Add a ``pypng`` image factory as a pure Python PNG solution. If ``pillow`` is
*not* installed, then this becomes the default factory.
- The ``pymaging`` image factory has been removed, but its factory shortcut and
the actual PymagingImage factory class now just link to the PyPNGImage
factory.