projman #5630 svg renderer does not work with matplotlib 0.98.1 [deprecated]

Debian unstable has update matplotlib to 0.98.1 and this version has a different interface for the backends. Using it to generate SVG diagrams results in:

Traceback (most recent call last):
 File "/usr/bin/projman", line 4, in <module>
   run(sys.argv[1:])
 File "/home/alf/dev/public/projman/main.py", line 24, in run
   main_run(args, __doc__)
 File "/home/alf/dev/public/logilab/common/clcommands.py", line 136, in main_run
   cmd_run(arg, *args)
 File "/home/alf/dev/public/logilab/common/clcommands.py", line 119, in cmd_run
   command.run(args)
 File "/home/alf/dev/public/projman/commands.py", line 80, in run
   self._run(args)
 File "/home/alf/dev/public/projman/commands.py", line 290, in _run
   renderer.render(self.project, stream)
 File "/home/alf/dev/public/projman/renderers/gantt.py", line 42, in render
   AbstractRenderer.render(self, task, stream)
 File "/home/alf/dev/public/projman/renderers/abstract.py", line 150, in render
   self._render_body(project)
 File "/home/alf/dev/public/projman/renderers/gantt.py", line 52, in _render_body
   self.drawer.main_title('Gantt diagram')
 File "/home/alf/dev/public/projman/renderers/abstract.py", line 347, in main_title
   ROW_HEIGHT, fillcolor=self._colors['HEAD'])
 File "/home/alf/dev/public/projman/renderers/abstract.py", line 252, in _draw_rect
   self._handler.draw_rect(self._x+1, self._y+1, width-2, height-2, **attrs)
 File "/home/alf/dev/public/projman/renderers/svg.py", line 175, in draw_rect
   self._rend.draw_rectangle(gc, rgbFace, x, y, width, height)
AttributeError: RendererSVG instance has no attribute 'draw_rectangle'
priorityimportant
typebug
done in0.13.6
load0.250
load left0.000
closed by<not specified>