1.0

Initial release, for i2b2 v1.5. 
By Mauro Bucalo, Universita' di Pavia, Italy.

June 2011

1.6

Updated for i2b2 v1.6. 
By Mauro Bucalo, Universita' di Pavia, Italy.

Jan. 2012

2.0

Updated for i2b2 v1.3-1.6, Internet Explorer compatibilities; added flexible column exclusion, table title & caption, leading row count column, and other enhancements.
By Wayne Chan, University of Massachusetts Medical School, Worcester, MA, USA; and Mauro Bucalo, Universita' di Pavia, Italy.

Feb. 2012

3.0

Major upgrade; many new features (CSV export, detailed tabulating of all observations, formatting options, paged queries...), heavily re-engineered.
By Axel Newe, Friedrich Alexander University Erlangen-Nuremberg, Germany.

Feb. 2013

3.2

Added options of using a subset of a large patient set; fixed blank 'Birth year' bug; added 'locality' column per request; added more user-friendly feedback (estimated run-time, etc.), help & hint; added server failure termination & notification. (for UMass Med School internal use only)
By Wayne Chan, University of Massachusetts Medical School, Worcester, MA, USA.

Nov. 2013

3.3

Added support of displaying observation blobs (for users with appropriate access) and added several useful columns to the output option of '1 row per observation (detailed, 1 column per observation detail)'.
By PARIS Nicolas, Hôpital Ambroise Paré, Boulogne, France; and Wayne Chan, University of Massachusetts Medical School, Worcester, MA, USA.

Mar. 2014