I've feature request.
If it possible, add RAW formats support.
With Microsoft Camera Codec Pack(MicrosoftRawCodec.dll). Or with libraw library.
And please, make WEBP viewing optional.
For example, I don't need this format, but now I can't delete libwebp_a.dll
Because 1.0.25 is not running under Win 7 I have to recompile it anyway and will enable delayed loading of the webp DLL as soon as the problem with Win 7 is solved. Then you can delete the webp DLL when you do not want to view and save webp files.