This is a first alpha release of the script editor that was one of our Google Summer of Code projects.
While it was pretty well stress-tested in the Fiji School, and while it works pretty well for some of the Fiji developers, it is more like a technology preview.
Having said all that, if you are interested in scripting Fiji, just use the Fiji Updater and give it a shot!
Speaking of shots: here is a screenshot:
