2010-03-11

Added support for find_by_sql.
Exposed find_extra_columns_class method.

2010-03-10

Added support for sharing extra_columns definition across finders

2010-03-09

Changed cloning to inheritance.

2010-03-09

Added stricter validation for :extra_columns input.

2010-03-08

Added support for multiple input formats for :extra_columns

2010-03-08

Fixed the bugs
Made the extra columns read-only.

2010-03-07

First release