* When transforming just one object, changing one of its properties generates
	an undo event in the Transform tools private undo stack, and is therefor
	not directly undoable after applying or canceling the transformation

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* Transform tool sets confirmation enabled after the first mouse down, even without mouse having moved (minor annoyance, but big problem to fix it...)

* Transform tool applies subpixel setting to rotation and scale too, even though this doesn't make much sense

* I have to come up with an idea how to elliminate the flickering in the PropertyListView

* Pen based tools should be reimplemented using AGG!

* the SetTo() and _Init() process of CanvasView() is probably doing to much/early invalidating, since flashing can be observed (canvas bitmap not yet composed, but white)

* when the Text tools size setting is keyboard controlled, there will be unwanted undo steps added when size already is the minimum or maximum value

* the behaviour of the splitter class (to define the size relation between the three listviews) is a bit flaky, but works good enough for now -> need to come up with something better though

* drag sorting objects in such a way that their order doesn't change actually, will still result in an undoable "Move Objects" event

* when rebuilding the Canvas becomes more heavy, the transformation box will not follow the mouse strictly enough, this can be quite annoying, but will go away
after the canvas rebuilding process has been rewritten

* the first action after starting a transformation is skipped when undoing
