Allow tagging version 0.3.

Author: Nyholm

composer.json

@@ -26,7 +26,7 @@
     "require":      {
         "php":                         "^5.5|^7",
         "symfony/framework-bundle":    "^2.6|^3.0",
-        "cache/taggable-cache":        "^0.2"
+        "cache/taggable-cache":        "^0.2|^0.3"
     },
     "require-dev":  {
         "phpunit/phpunit":             "^5.1|^4.0",