In addition, we've built a web-based workflow editor inside YouTrack. Here, you can write a workflow from scratch without leaving YouTrack.
We’ve added support for action rules. This type of script lets you extend YouTrack with actions that can be applied as commands or accessed directly from the issue toolbar. The new workflows also support custom scripts, which let you better organize and structure your code. Define your own functions and objects and use them in other rules and workflows.