ADG canvas 0.9.2 released

ADG is a GObject-based library that provides a non-interactive cairo canvas specifically designed for generating technical drawings. More details can be found on its home page.

• Allow negative values in spacing options so text can be squeezed in less space than line height (useful on e.g. limits).
• Proper bindings for AdgDash have been provided, so now line styles can be customized outside of the C world.
• Floating values are now accepted as scale arguments, so "4.2:1" or "2:3.2" are now perfectly valid scale strings.
• The private data handling has been modernized by leveraging the latest APIs provided by GLib. Private accessors and workarounds have been definitely removed. Because of this, glib-2.38.0 is now required.
• Many minor bugs have been squashed in this release.