Added 'bmp3:alpha' option for including the alpha channel when writing an image in the BMP3 format.
Added 'bmp3:alpha' option for including the alpha channel when writing an image in the BMP3 format.

Danack/ImageMagick,Danack/ImageMagick,Danack/ImageMagick,Danack/ImageMagick,Danack/ImageMagick,Danack/ImageMagick