Require stable versions of cache/* packages

Author: Nyholm

composer.json

@@ -30,7 +30,7 @@
     "require-dev": {
         "phpunit/phpunit":         "^5.7.21",
         "mockery/mockery":         "^0.9",
-        "cache/array-adapter":     "^0.5"
+        "cache/array-adapter":     "^1.0"
     },
     "autoload":    {
         "psr-4":                 {