Dropbox Lepton lossless-compressed JPEG support

[kiawizard]

Hi! Please consider adding support for https://github.com/dropbox/lepton , it allows to store JPEGs in *.lep format losslessly with a gain of 20-30% free space. An example photo: 000.zip. I have already implemented the support by calling "lepton.exe photo.lep photo.jpg" opening photo.jpg and immediately deleting it, but lost the code after a hdd crash, only have jpegview binary. Can redo the code and make a pull request, or do you think it is better to somehow embed Lepton inside JPEGView code (as a dll)?

[sylikc]

it would be better to implement the code inside using a DLL. If you can code up a DLL to link in to do the decode and present the image data to JPEGView, I'd happily integrate it.

It's certainly an interesting and new format...