The autoscaling feature is now available: a serie of predefined
scale factors are applied until the proper one is found. The demo
program autoscales the drawing on a canvas right click.
The introspection support has been improved, making now possible
to have LGI (Lua) bindings working out of the box. The typedef
hack has been dropped in favour of a private forwarder header.
The dash pattern of AdgLineStyle can now be customized by binding
to it an AdgDash instance.