Started on CanvasHelper.
Merge branch 'master' of https://github.com/bvssvni/csharp-sketch

Conflicts:
	Sketch.userprefs
	Sketch/bin/Debug/Sketch.exe
	Sketch/bin/Debug/Sketch.exe.mdb
	Sketch/bin/Debug/SketchLib.dll
	Sketch/bin/Debug/SketchLib.dll.mdb
	Sketch/test-results/Sketch.csproj.test-cache
	SketchLib/Controls/SketchControl.cs
	SketchLib/bin/Debug/SketchLib.dll
	SketchLib/bin/Debug/SketchLib.dll.mdb
	SketchLib/gtk-gui/SketchWindow.cs
	SketchLib/gtk-gui/gui.stetic
	SketchLib/test-results/SketchLib.csproj.test-cache
	SketchToVideo/bin/Debug/SketchLib.dll
	SketchToVideo/bin/Debug/SketchLib.dll.mdb
	SketchToVideo/bin/Debug/SketchToVideo.exe
	SketchToVideo/bin/Debug/SketchToVideo.exe.mdb