These are the Release Notes for the current and all previous versions.
| Changes in Release 21.4 | May 17, 2021 |
| Changes in Release 20.10 | Oct 26, 2020 |
| Changes in Release 20.4 | Jun 11, 2020 |
| Changes in Release 19.2 | Oct 21, 2019 |
| Changes in Release 19.1 | Jun 12, 2019 |
| Changes in Release 19.0 | Dec 11, 2018 |
| Changes in Release 18.1 | Oct 29, 2018 |
| Changes in Release 18.0 | Oct 24, 2017 |
| Changes in Release 17.1 | Jun 02, 2017 |
| Changes in Release 17.0 | Mar 01, 2017 |
| Changes in Release 16.4 | Feb 28, 2017 |
| Changes in Release 16.3 | Nov 09, 2016 |
| Changes in Release 16.2 | Jul 14, 2016 |
| Changes in Release 16.1 | Jun 07, 2016 |
| Changes in Release 16.0 | May 26, 2016 |
| Changes in Release 15.1 | Jul 29, 2015 |
| Changes in Release 15.0 | Jun 01, 2015 |
| Changes in Release 14.1 | Aug 30, 2014 |
| Changes in Release 14.0 | Jun 01, 2014 |
