Date:
Create warnings for ambiguous date format with %j, or %n (currently test 5,6 and 7 failed)
Adding 'r' format (RFC 822)

More Countries support
Mail on peardev if you are interested to add validations for your area

Update banks SWIFT or IBANN validation for each country (when possible)

Check that for the postal codes:
http://www.magma.ca/~djcl/postcd.txt
