GeometryHelper 13.9.0

GeometryHelper 13.9.0, with GeometryHelper.CadConvert, GeometryHelper.IfcConvert and GeometryHelper.TeklaConvert.{2020,2025,2026} at 13.9.0.

NEW IN 13.9.0

A minor release: public types and members added, none removed or renamed. A drawing only read and saved is
written as it was, to the byte.

NEW, DXF: images and wipeouts
- IMAGE and WIPEOUT entities, read until now as DxfUnknownEntity and refused by TransformBy, are DxfRasterImage and
  DxfWipeout, after AutoCAD's RasterImage and Wipeout, with DxfRasterImageDef (IMAGEDEF) and DxfRasterVariables
  (RASTERVARIABLES). No pixel is read. An image is placed (Get/SetOrientation, Position, Width, Height, Rotation,
  PixelToModelTransform), shown (DisplayOptions, ShowImage, ImageTransparency, Brightness, Contrast, Fade) and
  clipped (IsClipped, IsClipInverted, GetClipBoundary, SetClipBoundary, GetVertices) as AutoCAD 2021 reads and
  writes it: a picture of 4 by 3 pixels at (10, 20) with a pixel 10 across is 40 by 30. TransformBy takes any
  transformation, Explode gives the lines of the frame or the boundary, GeometricExtents and GetGeometry follow
  the boundary shown, and the header extents grow when one is appended or moved.
- Copies into another drawing bring one IMAGEDEF for all images, the CLASS rows AutoCAD needs, and raise a row
  counted 0 (ezdxf R2010 and later) so that AutoCAD shows them; the inverted clip is left out before R2010.
- Made in code: new DxfRasterImageDef(path, size), CreateImageDictionary, SuggestName, DxfDBDictionary.SetAt,
  new DxfRasterImage(definition), AssociateRasterDef, GetEntityCount, new DxfWipeout() and SetFrom; reactors,
  variables and CLASS rows are made where a drawing has none. A name already taken is refused.
- A clip polygon not ending on its first corner to the bit, which AutoCAD 2021 shows as nothing (a wipeout) or
  cannot open (an image), is written closed wherever the library writes it anew.
- Checked in AutoCAD 2021: every drawing made or edited opened with AUDIT finding no error, 55 579 numbers read
  back within 7.1E-15, and AutoCAD's own saves read back the same.

CHANGED, DXF: results callers will see change
- An IMAGE or a WIPEOUT read from a file is a DxfRasterImage or a DxfWipeout, not a DxfUnknownEntity; it can be
  moved, is taken by dynamic-block actions and by IntersectWith (its frame or boundary), and grows the extents.

Details in CHANGELOG.md.

Earlier releases: https://github.com/nguyenthanguth/GeometryHelper/blob/main/CHANGELOG.md