Modernizr/Modernizr — pull request #692 by amandeepg (2012-09-14 06:20:53+00:00)
Title: Add feature detect for lossless WebP images

This adds detection for the [new lossless format] for WebP images [introduced by Google], on Aug. 30, 2012.

Reports true on Chrome Dev (v23), as it should.
Reports false on Chrome Stable (v20) and Firefox 16, as it should.

Created the base64 image by making a 1x1 PNG image in GIMP, then running:
```
$ cwebp -lossless small.png -o small.webp
$ base64 small.webp
```

[new lossless format]: https://developers.google.com/speed/webp/docs/webp_lossless_bitstream_specification
[introduced by Google]: http://googledevelopers.blogspot.ca/2012/08/lossless-and-transparency-modes-in-webp.html