Log Message:
Udate 2.14 to 2.17
2.17
     - Added support for Digest::SHA::sha256/384/512_hex digests for passwords.
       This is a response to https://rt.cpan.org/Ticket/Display.html?id=79333
       which requested sha256_base64 but because base64 digests are not properly
       padded I chose to go with sha256/384/512_hex instead.

     - Quote all database column and field names in SQL queries.
       https://rt.cpan.org/Ticket/Display.html?id=79341
       Table column names may confict with sql key words

2.16 - Sun May 27 00:23:41 PDT 2012
     - Fix 'wrong method names in calls to apache request logging' for \ 
https://rt.cpan.org/Ticket/Display.html?id=77464

2.15 - Sat May 26 08:32:23 PDT 2012
     - Implemented a logger() method that uses Apache::Log
       (inspired by https://rt.cpan.org/Ticket/Display.html?id=75675)
     - Address 'Error Message Inconsistency' \ 
https://rt.cpan.org/Ticket/Display.html?id=75725
     - Address ' If user is not active, it produces 2 errors'
       https://rt.cpan.org/Ticket/Display.html?id=75724
     - Added small amount of test coverage for authen_cred()