+- add notion of 'asic implementation' for specifying reader-specific
+ initialization values such as mod_conductance
+- abstract a read single block / read multiple block API where l2/proto
+ layer can provide multi-block function (e.g. iso15693), which will be
+ emulated in case there only is a single-block function
+- switch over to use of rfid_buf structure, similar to linux skb. upper
+ layers have sufficient headroom in order to have lower layers add protocol
+ headers in front of a packet
+- implement software checksumming support. The reader should be able to
+ indicate whether it supports hardware checksum generation / verification.
+- application software should be able to override hardware csumming on request
+- implement some auto-calibration mode where the user is requested to leave a
+ single PICC/VICC on the reader and the software iterates through various
+ mod_conductance and bitphase values to see whether it can calibrate to a given
+ [new] card. The resulting calibration values are printed by the program.