Version 0.2

Release 0.2 (2014-03-03):
 N Add a function nfc.(*Device).LastError()
 N Add a function nfc.(*Device).InitiatorDeselectTarget()
 B Fix incorrect handling in a couple of places
 C Improve and unify error strings
 B Fix issue #2

Version 0.1

Release 0.1 (2014-02-16):
 R initial release