------------------ - Add PIN block ISO 4 support. Thanks David Schmid <david.schmidmailbox.org>.
1.2.0
------------------ - Update TR-31 to wrap/unwrap any key.
1.1.0
------------------ - Added support for TR-31 key block. Specification version 2018.
1.0.1
------------------ Removed leftover code from PVV generation.
1.0.0
------------------ - Card Verification Value generation - DES utilities - MAC ISO 9797 generation - PIN block encoding and decoding - IBM 3624 PIN and offset generation - Visa PIN Verification Value generation