mapnik/mapnik-reference — pull request #61 by jhollinger2 (2014-06-02 18:49:07+00:00)
Title: Group symbolizer reference

This adds reference information for group symbolizer (mapnik/mapnik#2160). The goal is to be able to create group symbolizers in Carto CSS. This effort also requires a corresponding update to carto itself.

See https://github.com/mapnik/mapnik/wiki/GroupSymbolizer for more information on group symbolizer.