Version 3.1.1 released on April 6, 2018

New features and improvements are listed in the docs/VERSION document. Installation instructions are included in the docs/INSTALL and docs/README files. Upgrade instructions are included in the docs/CHANGELOG file.

Version 3.1.0 released on June 13, 2016

New features and improvements are included in the VERSION document. Upgrade instructions are included in the CHANGELOG.

Version 3.0.0 released on May 17, 2015.

New features and improvements are included in the VERSION document. Upgrade instructions are included in the CHANGELOG.