Add support for Windows icon and cursor import
Windows 3 style ICO and CUR files are internally very similar to BMP files, so much of the hard work already existed. As with other multi-frame formats (GIF and Sprite for example) ChangeFSI simply picks the first one it finds in a file, even if there are several offered. In modifying the BMP importer, ChangeFSI no longer reads off the end of the palette for bitmaps which don't use all 2^bpp entries. Tested with a variety of icons and bitmaps up to the maximum size allowed 256x256 pixels. Documents updated. Version 1.51. Tagged as 'ChangeFSI-1_51'
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