added undo button (finishing work from Adrian?) and redo (not yet working). added check for gi version when importing.
branches/mike/pygtk/canvas/Closed feedwater heater model (heat exchanger).svg
branches/mike/pygtk/canvas/Condenser.svg
branches/mike/pygtk/canvas/Dissipator.svg
branches/mike/pygtk/canvas/Model of a Regenerator.svg
branches/mike/pygtk/canvas/Model of a joining of two flow streams.svg
branches/mike/pygtk/canvas/Simple boiler model.svg
branches/mike/pygtk/canvas/Simple model of a compressor using isentropic efficiency.svg
branches/mike/pygtk/canvas/Simple open feedwater heater.svg
branches/mike/pygtk/canvas/Simple turbine model.svg
branches/mike/pygtk/canvas/Tee piece: branching of flow.svg
branches/mike/pygtk/canvas/Two-heat-inlet open feedwater heater.svg
branches/mike/pygtk/canvas/blocklist.py
