added errormessages (in method MCI_TxRequest_RxResponse, for better NFC error analysis)
CRC check included. If the meter CRC doesn't match the calculated CRC an error is returned.
removed method MCI_Raw_Read/write (same as MCI_Read/Write, which autoselects the correct password)
Refactoring
more detailed errorcodes(no more unidentified, separated host (>=20) and Meter messages (0..8))