1.10.0
The 1.10.0 release of GeoScript is built on Grooovy 2.4.12, GeoTools 18.0, and the Java Topology Suite 1.13 and requires Java 8.
https://github.com/geoscript/geoscript-groovy/blob/master/doc/releases.rst
http://geoscript.github.io/geoscript-groovy/api/1.10.0/index.html