Revision history

1.00 Sat Sep 14 2002

        + Add write_xls() method 
        + Get column information in database agnostic manner
        + Add some actual tests

0.08 Sat Sep 14 2002

+ added 'restrict_rows' and 'columns_wanted' (from Drew Taylor)

0.07 Wed Sep 11 2002

+ added Oracle query (from Hans Poo & Daniel Mercado)

0.06 Wed Feb 20 2002

+ Bugfix on Pg subclass

0.05 Wed Feb 20 2002

+ tweak PostgreSQL query (from Thomas Mason)

0.04 Fri Dec 28 2001

+ added PostgreSQL query (from Thomas Mason)

0.03 Mon Aug 27 2001

+ added Sybase query (from Matt Sanford)

0.02 Fri Aug 24 2001

+ split MySQL-specific code out

0.01 Tue Aug 7 2001