yafic 1.3 beta 1

I've been wanting to do this for a while now, especially after hearing that SHA-1 was broken. (Ok, I guess that's rather old news.) Anyhow, I added SHA-256 to yafic. Adding support for future hashes should be fairly trivial now as well.

It can be found at http://www.saddi.com/software/yafic/dist/

I've done very basic testing, so use at your own risk. I plan to start using it regularly to test it a bit more.

I plan to add another feature or two (like XML output) before making an official 1.3 release.

And as usual, it may be found in my Mercurial repository: http://hg.saddi.com/yafic-sha256
(I don't plan to merge it into the main yafic repository until it's undergone more testing.)