Extension for NSImage to support webp format image.
It's easy now to make NSImage support Webp format image. Only one line code
#import <WebPImageToolKit/NSImage+WebpAndCGImage.h>
[NSImage imageFromWebpImage:#{webpfile_path}]
or you can asynchronously load webp file like this
[NSImage imageWithWebp:#{webpfile_path}
completionBlock:#{completion_block}
failureBlock:#{failure_block}];