Require stable versions of cache/* packages

Author: Nyholm

composer.json

@@ -30,7 +30,7 @@
         "psr/cache":                "^1.0",
         "psr/simple-cache":         "^1.0",
         "cache/adapter-common": "^1.0",
-        "cache/hierarchical-cache": "^0.4",
+        "cache/hierarchical-cache": "^1.0",
         "predis/predis":            "^1.1"
     },
     "require-dev":       {