title: Composer: required packages with differing levels of minimum-stability
body: <p>I have a composer file for a laravel installation with the following composer.json file:</p>
  
  <pre><code>{
      "name": "laravel/laravel",
      "description": "The Laravel Framework.",
      "keywords": ["framework", "laravel"],
      "license": "MIT",
      "require": {
          "laravel/framework": "4.1.*"
      },
      "autoload": {
          "classmap": [
              "app/commands",
              "app/controllers",
              "app/models",
              "app/database/migrations",
              "app/database/seeds",
              "app/tests/TestCase.php"
          ]
      },
      "scripts": {
          "post-install-cmd": [
              "php artisan clear-compiled",
              "php artisan optimize"
          ],
          "post-update-cmd": [
              "php artisan clear-compiled",
              "php artisan optimize"
          ],
          "post-create-project-cmd": [
              "php artisan key:generate"
          ]
      },
      "config": {
          "preferred-install": "dist"
      },
      "minimum-stability": "stable"
  }
  </code></pre>
  
  <p>I'm trying to add in the bundle for sentry. On sentry's website it says I can install it by adding the following to my composer.json file:</p>
  
  <pre><code>{
      "require": {
          "cartalyst/sentry": "2.0.*"
      },
      "minimum-stability": "dev"
  }
  </code></pre>
  
  <p>I tried adding the new json object at the end of the current laravel one like so:</p>
  
  <pre><code>...
  },
  {
      "require": {
          "cartalyst/sentry": "2.0.*"
      },
      "minimum-stability": "dev"
  }
  </code></pre>
  
  <p>When I run the <code>composer update</code> command to load the new package I get an error saying that the new object addition is not valid json.</p>
  
  <p>If I add the <code>cartalyst/sentry</code> to the existing <code>require</code> object it cannot find the sentry package because the existing requires have a minimum-stability value of <code>stable</code>.</p>
  
  <p>Is there a way of specifying the sentry package in a separate require object that has the minimum-stability setting of <code>dev</code>?</p>