I had skipped this announcement. This was released (in http://gridflow.ca/download) a month ago, during the GridFlow workshop that was held in São Paulo at the time of the Brasilian Pd Convention of 2008.
ChangeLog for version 0.9.2 (2008.05.02):
* removed libruby dependency
_ _ __ ___ _____ ________ _____________ _____________________ ... | Mathieu Bouchard - tél:+1.514.383.3801, Montréal QC Canada