This looks like a promising project, but is not really use-able at this point. Upon downloading from subversion (there is no "stable" download tar file), I immediately encountered a bug compiling Java components which prevented me from installing.
The support options are sparse (low-volume mailing list, no IRC channel). I will be keeping an eye on it, and will try it again once it matures.
Wow, this is easy to get into! I'll update this review as I have more thoughts. To start with, there is a tutorial, and the design is really well thought out so far. The programming language is custom, but a lot like Python (YAY!)