composer/composer — pull request #2471 by zachgarwood (2013-12-02 07:22:37+00:00)
Title: Add minimum-stability, prefer-stable config options

* Created `Config\Setting` class to house config setting names
* Added `minimum-stability` and `prefer-stable` to `RootPackageLoader::$defaultConfig`
* Allowed for config settings to override root settings (for these two)
* Updated documentation