Set specific dependency versions

composer.json

@@ -21,8 +21,8 @@
   "require": {
     "laravel/framework": "dev-master#ba916851321b9233cb56a0fb1deb41043b7df5fb",
     "pingpong/modules": "1.1.10",
-    "filp/whoops": "~1.0",
-    "cartalyst/sentry": "~2.1",
+    "filp/whoops": "1.1.3",
+    "cartalyst/sentry": "2.1.4",
     "asgardcms/core-module": "dev-master",
     "asgardcms/dashboard-module": "dev-master",
     "asgardcms/user-module": "dev-master",
@@ -35,9 +35,9 @@
   },
   "require-dev": {
     "phpunit/phpunit": "~4.0",
-    "mockery/mockery": "dev-master",
+    "mockery/mockery": "0.9.2",
     "symfony/browser-kit": "~2.6",
-    "barryvdh/laravel-debugbar": "dev-master"
+    "barryvdh/laravel-debugbar": "1.8.4"
   },
   "repositories": [
     {