My RFID stack now reads the ATS via T=CL

Lots of T=CL features such as chaining are still missing, but the code evolves constantly, as is the API (which now starts to become easy and nice). I'm constantly committing to, for those of you who can't wait.

I'm now also in (temporary) possession of two other readers, as well as a 14443 B-type passport sample (in addition to my 14443 A) sample.

Meanwhile I've also confirmed that the Omnikey 5121 windows reader driver has the same (or a similar) bug as the Linux driver, too. It also refuses to work with any MTCOS based card. I hope the MTCOS sample card I sent them will help them debugging - even though I don't need their proprietary drivers anymore at this point.