388: ActualImage
390: ImageGraphics2D ctor,

add ..
1. CustomScanlineRasToBmp_EnlargedV1 & 2 ctor
2. ScanlineRasToBmp.UseCustomSolidSingle
LineMethod
3. ClipLiangBarsky
391: focus on Clipping
395: VectorClipper, BoundRectInt
396: update blur sample

test Painter class
398: SpriteShape,LionDataStore

just refractor
400: clean BlurWithPainter sample
404: WindowsFormsBitmapBackBuffer
409: ImageGraphic2D members update
410: reimplement Graphic2D.Clear()
411: GammaLookUpTable cache
412: fix DemoBase float value property

DemoConfigPresentaionHint.SlideBarContinuous_R4
DemoConfigPresentaionHint.SlideBarContinuous_R8
413: CanvasPainter's drawing and filling methods
415: update Perspective Sample

use painter
416: add StrokeColor
417: MyTypeFacePrinter
418: MyTypeFacePrinter
Merge branch 'v_bmp' into v_mini01
420: ISpanGenerator. GenerateColors()
421: IGradientGen