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 28, 2020 |
| Changes in Release 20.4 | Jun 11, 2020 |
| Changes in Release 6.2 | Oct 21, 2019 |
| Changes in Release 6.1 | Jun 12, 2019 |
| Changes in Release 6.0 | Dec 20, 2018 |
| Changes in Release 5.1 | Nov 12, 2018 |
| Changes in Release 5.0 | Oct 30, 2018 |
| Changes in Release 4.3 | Oct 09, 2017 |
| Changes in Release 4.2 | Jul 11, 2017 |
| Changes in Release 4.1 | Jun 20, 2017 |
| Changes in Release 4.0 | Feb 09, 2017 |
| Changes in Release 3.0 | Nov 11, 2016 |
| Changes in Release 2.0 | Nov 12, 2013 |
| Changes in Release 1.0 | Mar 16, 2012 |
