Note: I haven't successfully tested the webform integration, the subscriber API is a bit shaky and likely to change, the external queuing system has been tested extensively and is also likely to be refactored into the Drupal Queue Interface.
* Improved documenatation.
* SQL Server bug fixes
* PDO Character Set fixes.
* Improved validation.
* Ability to display load drupal nodes based on nid.
* Added Fixedcolumns plugin support