Updating session handler is breaking old cache.

Author: Nyholm

composer.json

@@ -27,7 +27,7 @@
         "php": "^5.5 || ^7.0",
         "symfony/framework-bundle": "^2.7 || ^3.0",
         "cache/taggable-cache": "^0.4.3",
-        "cache/session-handler": "^0.2"
+        "cache/session-handler": "^0.1"
     },
     "require-dev":  {
         "phpunit/phpunit": "^5.1 || ^4.0",