MERGED: @piwi changes
MERGED: @marshmellows changes.
I'm not even gonna try write up all that stuff..
ADD: changed some commands inside the "Hf 14a sim" on deviceside.
ADD: @mobeius "two nonce" version for mfkey32. It is also inside the "hf 14a sim" with the "x" parameter.
I have kept whatever copyright notices exist. Please add your own
copyright notice if you have made any nontrivial changes or additions to
the code. There are several files without any attribution, currently.