silverstripe/silverstripe-framework — pull request #2311 by unclecheese (2013-08-08 05:25:14+00:00)
Title: API Change: Make GridFieldConfig objects decoratable

This change promotes GridFieldConfig objects to first-class Object descendants, making them extendable through the decorator pattern.

Relevant discussion in the dev group: https://groups.google.com/forum/#!topic/silverstripe-dev/Z6tu1k05ZmA