Version 1.03
06/11/06 - Fixed a typo in the documentation for issue_num().

Version 1.02
04/01/02 - Fixed error in test cases of t/04-bad.t. It was looking for the string "not correct" from Algorith::LUHN, which changed it to "incoorect." Test now looks for either string.

Version 1.01
03/27/02 - Fixed error() to return undef for valid CUSIP, as documented. Set $ERROR to undef after successful is_valid() call.

Version 1.00
11/18/01 - Added the error() method.

Version 0.03
05/09/01 - Added t/05-acc.t test.

Version 0.02

05/03/01 - Added a lot of validations in is_valid. Added new test t/04-bad.t to check new validations.

05/01/01 - Changed the way the list of A..Z valid_chars is generated to be

more explicit.