diff --git a/composer.lock b/composer.lock
index eea55a3..70823f3 100644
--- a/composer.lock
+++ b/composer.lock
@@ -9,22 +9,22 @@
     "packages": [
         {
             "name": "asm89/stack-cors",
-            "version": "0.2.1",
+            "version": "dev-master",
             "source": {
                 "type": "git",
                 "url": "https://github.com/asm89/stack-cors.git",
-                "reference": "2d77e77251a434e4527315313a672f5801b29fa2"
+                "reference": "f76d3ff80f287dcdf18cec0855efd6787cc1c7a5"
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             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/asm89/stack-cors/zipball/2d77e77251a434e4527315313a672f5801b29fa2",
-                "reference": "2d77e77251a434e4527315313a672f5801b29fa2",
+                "url": "https://api.github.com/repos/asm89/stack-cors/zipball/f76d3ff80f287dcdf18cec0855efd6787cc1c7a5",
+                "reference": "f76d3ff80f287dcdf18cec0855efd6787cc1c7a5",
                 "shasum": ""
             },
             "require": {
                 "php": ">=5.3.2",
-                "symfony/http-foundation": "~2.1",
-                "symfony/http-kernel": "~2.1"
+                "symfony/http-foundation": "~2.1|~3.0",
+                "symfony/http-kernel": "~2.1|~3.0"
             },
             "type": "library",
             "autoload": {
@@ -48,7 +48,7 @@
                 "cors",
                 "stack"
             ],
-            "time": "2014-07-28 07:22:35"
+            "time": "2015-12-23 16:04:18"
         },
         {
             "name": "composer/installers",
@@ -1100,12 +1100,12 @@
             "source": {
                 "type": "git",
                 "url": "https://github.com/php-fig/log.git",
-                "reference": "1.0.0"
+                "reference": "fe0936ee26643249e916849d48e3a51d5f5e278b"
             },
             "dist": {
                 "type": "zip",
                 "url": "https://api.github.com/repos/php-fig/log/zipball/fe0936ee26643249e916849d48e3a51d5f5e278b",
-                "reference": "1.0.0",
+                "reference": "fe0936ee26643249e916849d48e3a51d5f5e278b",
                 "shasum": ""
             },
             "type": "library",
@@ -2759,24 +2759,24 @@
     "packages-dev": [
         {
             "name": "behat/mink",
-            "version": "v1.7.0",
+            "version": "v1.7.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/minkphp/Mink.git",
-                "reference": "6c129030ec2cc029905cf969a56ca8f087b2dfdf"
+                "reference": "e6930b9c74693dff7f4e58577e1b1743399f3ff9"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/minkphp/Mink/zipball/6c129030ec2cc029905cf969a56ca8f087b2dfdf",
-                "reference": "6c129030ec2cc029905cf969a56ca8f087b2dfdf",
+                "url": "https://api.github.com/repos/minkphp/Mink/zipball/e6930b9c74693dff7f4e58577e1b1743399f3ff9",
+                "reference": "e6930b9c74693dff7f4e58577e1b1743399f3ff9",
                 "shasum": ""
             },
             "require": {
                 "php": ">=5.3.1",
-                "symfony/css-selector": "~2.1"
+                "symfony/css-selector": "~2.1|~3.0"
             },
             "require-dev": {
-                "symfony/phpunit-bridge": "~2.7"
+                "symfony/phpunit-bridge": "~2.7|~3.0"
             },
             "suggest": {
                 "behat/mink-browserkit-driver": "extremely fast headless driver for Symfony\\Kernel-based apps (Sf2, Silex)",
@@ -2813,31 +2813,31 @@
                 "testing",
                 "web"
             ],
-            "time": "2015-09-20 20:24:03"
+            "time": "2016-03-05 08:26:18"
         },
         {
             "name": "behat/mink-browserkit-driver",
-            "version": "v1.3.0",
+            "version": "v1.3.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/minkphp/MinkBrowserKitDriver.git",
-                "reference": "da47df1593dac132f04d24e7277ef40d33d9f201"
+                "reference": "10e67fb4a295efcd62ea0bf16025a85ea19534fb"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/minkphp/MinkBrowserKitDriver/zipball/da47df1593dac132f04d24e7277ef40d33d9f201",
-                "reference": "da47df1593dac132f04d24e7277ef40d33d9f201",
+                "url": "https://api.github.com/repos/minkphp/MinkBrowserKitDriver/zipball/10e67fb4a295efcd62ea0bf16025a85ea19534fb",
+                "reference": "10e67fb4a295efcd62ea0bf16025a85ea19534fb",
                 "shasum": ""
             },
             "require": {
-                "behat/mink": "~1.7@dev",
+                "behat/mink": "^1.7.1@dev",
                 "php": ">=5.3.6",
-                "symfony/browser-kit": "~2.3",
-                "symfony/dom-crawler": "~2.3"
+                "symfony/browser-kit": "~2.3|~3.0",
+                "symfony/dom-crawler": "~2.3|~3.0"
             },
             "require-dev": {
                 "silex/silex": "~1.2",
-                "symfony/phpunit-bridge": "~2.7"
+                "symfony/phpunit-bridge": "~2.7|~3.0"
             },
             "type": "mink-driver",
             "extra": {
@@ -2869,20 +2869,20 @@
                 "browser",
                 "testing"
             ],
-            "time": "2015-09-21 20:56:13"
+            "time": "2016-03-05 08:59:47"
         },
         {
             "name": "behat/mink-goutte-driver",
-            "version": "v1.2.0",
+            "version": "v1.2.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/minkphp/MinkGoutteDriver.git",
-                "reference": "c8e254f127d6f2242b994afd4339fb62d471df3f"
+                "reference": "8b9ad6d2d95bc70b840d15323365f52fcdaea6ca"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/minkphp/MinkGoutteDriver/zipball/c8e254f127d6f2242b994afd4339fb62d471df3f",
-                "reference": "c8e254f127d6f2242b994afd4339fb62d471df3f",
+                "url": "https://api.github.com/repos/minkphp/MinkGoutteDriver/zipball/8b9ad6d2d95bc70b840d15323365f52fcdaea6ca",
+                "reference": "8b9ad6d2d95bc70b840d15323365f52fcdaea6ca",
                 "shasum": ""
             },
             "require": {
@@ -2892,7 +2892,7 @@
                 "php": ">=5.3.1"
             },
             "require-dev": {
-                "symfony/phpunit-bridge": "~2.7"
+                "symfony/phpunit-bridge": "~2.7|~3.0"
             },
             "type": "mink-driver",
             "extra": {
@@ -2924,7 +2924,7 @@
                 "headless",
                 "testing"
             ],
-            "time": "2015-09-21 21:31:11"
+            "time": "2016-03-05 09:04:22"
         },
         {
             "name": "doctrine/instantiator",
@@ -2982,24 +2982,24 @@
         },
         {
             "name": "fabpot/goutte",
-            "version": "v3.1.1",
+            "version": "v3.1.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/FriendsOfPHP/Goutte.git",
-                "reference": "751a3dc5c4d86ec3e97c9f27133ef9694d9243cc"
+                "reference": "3cbc6ed222422a28400e470050f14928a153207e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/FriendsOfPHP/Goutte/zipball/751a3dc5c4d86ec3e97c9f27133ef9694d9243cc",
-                "reference": "751a3dc5c4d86ec3e97c9f27133ef9694d9243cc",
+                "url": "https://api.github.com/repos/FriendsOfPHP/Goutte/zipball/3cbc6ed222422a28400e470050f14928a153207e",
+                "reference": "3cbc6ed222422a28400e470050f14928a153207e",
                 "shasum": ""
             },
             "require": {
                 "guzzlehttp/guzzle": "^6.0",
                 "php": ">=5.5.0",
-                "symfony/browser-kit": "~2.1",
-                "symfony/css-selector": "~2.1",
-                "symfony/dom-crawler": "~2.1"
+                "symfony/browser-kit": "~2.1|~3.0",
+                "symfony/css-selector": "~2.1|~3.0",
+                "symfony/dom-crawler": "~2.1|~3.0"
             },
             "type": "application",
             "extra": {
@@ -3027,7 +3027,7 @@
             "keywords": [
                 "scraper"
             ],
-            "time": "2015-08-29 16:16:56"
+            "time": "2015-11-05 12:58:44"
         },
         {
             "name": "jcalderonzumba/gastonjs",
@@ -4203,7 +4203,9 @@
     ],
     "aliases": [],
     "minimum-stability": "dev",
-    "stability-flags": [],
+    "stability-flags": {
+        "asm89/stack-cors": 20
+    },
     "prefer-stable": true,
     "prefer-lowest": false,
     "platform": {
diff --git a/core/composer.json b/core/composer.json
index 7ae7f4f..72edaaf 100644
--- a/core/composer.json
+++ b/core/composer.json
@@ -32,7 +32,7 @@
         "zendframework/zend-diactoros": "~1.1",
         "composer/semver": "~1.0",
         "paragonie/random_compat": "~1.0",
-        "asm89/stack-cors": "~0.2.1"
+        "asm89/stack-cors": "dev-master"
     },
     "require-dev": {
         "behat/mink": "~1.7",