Log Message:
Update goocanvas to 0.14.

GooCanvas 0.14	(Mar 15 2009)
==============

 o Added support for tooltips (this means we need GTK+ 2.12).
   (Note that there is a GTK+ bug which will cause problems with
   tooltips on a large canvas. See bug #573294.)
 o Added "x", "y", "width" and "height" \ 
properties to items that
   didn't have them.
 o Fixed bug in goo_canvas_convert_from_item_space().
 o Added "scroll-event" signal to GooCanvasItem.

GooCanvas 0.13	(Nov 30 2008)
==============

 o New GooCanvasGrid item for drawing grids on the canvas.
 o Support for static items that don't move as the canvas is zoomed
   and scrolled (this is a bit experimental).
 o Font hinting is not turned off any more - this means smaller text should
   be more readable. Hopefully it doesn't affect text layout.
 o Fixed a few GooCanvasTable drawing bugs.
 o Fixed GooCanvasText drawing, when align is set.
 o Fixed GooCanvasPolyline is_item_at() code, so the fill isn't tested.
 o Added "animation-finished" signals to GooCanvasItem & Model.