Added GcPdfDocument.RemoveImages() method: Removes the specified images from the document.
Added PdfImageInfo.WidgetReferences property: Gets the list of references to the image from widget annotations.
Added PdfImageWidgetAnnotationReference class: Represents a reference to an image from a WidgetAnnotation via the ButtonAppearance.Image or StateAppearance.Image property.
Added PdfImageLocation.Annotation property: Gets the AnnotationBase that references this image.
Added PdfImageLocation.FormXObject property: Gets the Graphics.FormXObject that references this image.
Resolved Issues
Fixed the incorrect font issue in the generated PDF when StandardFonts.ZapfDingbats is specified as default for a field.
