composer/installers — pull request #17 by shama (2012-06-26 21:12:54+00:00)
Title: Mark Certain Types As Stable

At a certain point we'll have to consider some types as **stable** or will never change to avoid breaking packages in the wild. Especially since we can't simply search packagist for usage.

I think `cakephp`, `drupal`, `lithium`, `ppi`, `symfony1`, and `wordpress` make good candidates as they have been discussed and/or reviewed.