Downgrading minimum version of sf2, WIP.

Author: wtfzdotnet

composer.json

@@ -15,16 +15,16 @@
     "require": {
         "php": ">=5.4.0",
         "ext-curl": "*",
-        "symfony/event-dispatcher": "~2.5",
+        "symfony/event-dispatcher": "~2.1",
         "symfony/options-resolver": "~2.6",
         "guzzlehttp/guzzle": "~5.0",
-        "guzzlehttp/cache-subscriber": "0.1.*@dev",
+        "guzzlehttp/cache-subscriber": "~0.2@dev",
         "guzzlehttp/log-subscriber": "~1.0",
         "guzzlehttp/retry-subscriber": "~2.0",
         "psr/log": "~1.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "~4.0",
+        "phpunit/phpunit": "~4.1",
         "monolog/monolog": ">=1.11.0"
     },
     "suggest": {