Allow 5.5 on tag interop (#146)

Nyholm · web-flow · commit d51f1ce9ec3c · 2017-03-13T10:07:09.000+01:00
diff --git a/composer.json b/composer.json
@@ -23,7 +23,7 @@
         }
     ],
     "require":     {
-        "php":                   "^5.6 || ^7.0",
+        "php":                   "^5.5 || ^7.0",
         "psr/cache":             "^1.0"
     },
     "autoload":    {
