Version 4.1.2 was released on October 11, 2019.
To access the V4 documentation, go here.
[CHK-380] - Checklist JQL functions now appear in auto-complete context only for checklist custom fields
[CHK-439] - When multiple checklist workflow functions are used in a transition, only the last one is applied if the checklist is initially empty
[CHK-441] - Jira 8.x now displays a "No Change Log found" message in the Jira logs when creating issues