Well the code for it is largely in svn. What it's lacking is a few dozen hooks into the C++ game where it can catch the event, pass control back to the script, and then apply the result.
The code is in my branch, and IIRC largely working. Just a lot of hooks to add.
If anyone wants to take a shot at finishing it, do so with my blessing. Otherwise I'll be back to look at it around August,