Release notes are created for major releases, which include collections of issue fixes and improvements, plus other changes to the system.
Current Release Version 1.26
Release Notes Archive
Version 1.25
Version 1.24
Version 1.23
Version 1.22
Version 1.21
Version 1.20
Version 1.19
Version 1.18.2
Version 1.18.0
Version 1.17.6
Version 1.17.5
Version 1.17.4