I just added support for smart cards, protocol ISO 7816-3, T=0. I'll get back to this and work on T=1 when other, more important things are done.
A short demo video can be found in the gallery.
Edit: If you're wondering what's with the 10 private comments (it says 10 in there, but you can't see any comment), they're spam.
From the first day the campaign got posted, I started receiving various offers to get many shares and likes or $1 contributions + nice comments, usually for a very low price, like $5.
I didn't buy into any of that and I'm going to delete them now.
Edit 2: I finally calculated the baudrate error for SPI & I2C. It's less than 0.18 for SPI (with one exception at 426 bps, which becomes 427 bps, so 0.23% error).
For I2C, it's less than 0.14%.