Fix composer.json and change date manipulation

composer.json

@@ -11,12 +11,13 @@
     "license" : "MIT",
     "require": {
         "php": ">=5.4.0",
-        "illuminate/support": "4.2.x",
-        "illuminate/database": "4.2.x",
-        "illuminate/events": "4.2.x"
+        "illuminate/support": "4.2.x-dev",
+        "illuminate/container": "4.2.x-dev",
+        "illuminate/database": "4.2.x-dev",
+        "illuminate/events": "4.2.x-dev"
     },
     "require-dev": {
-        "orchestra/testbench": "dev-master",
+        "orchestra/testbench": "*",
         "mockery/mockery": "*"
     },
     "autoload": {

src/Jenssegers/Mongodb/Model.php

@@ -232,11 +232,6 @@ abstract class Model extends \Jenssegers\Eloquent\Model {
             {
                 $value = (string) $value;
             }
-
-            else if ($value instanceof MongoDate)
-            {
-                $value = $this->asDateTime($value)->format($this->getDateFormat());
-            }
         }
 
         return $attributes;

tests/ModelTest.php

@@ -332,8 +332,8 @@ class ModelTest extends TestCase {
 
 		// test custom date format for json output
 		$json = $user->toArray();
-		$this->assertEquals($user->birthday->format('l jS \of F Y h:i:s A'), $json['birthday']);
-		$this->assertEquals($user->created_at->format('l jS \of F Y h:i:s A'), $json['created_at']);
+		$this->assertEquals((string) $user->birthday, $json['birthday']);
+		$this->assertEquals((string) $user->created_at, $json['created_at']);
 
 		// test default date format for json output
 		$item = Item::create(array('name' => 'sword'));