TASK: Declare Neos 8.x compatibility

Author: mficzel

composer.json

@@ -8,7 +8,7 @@
     },
     "require": {
         "neos/redirecthandler": "^3.0.1 || ^4.0.2 || ~5.0 || dev-master",
-        "neos/neos": "~4.3 || ~5.0 || ~7.0 || dev-master",
+        "neos/neos": "~4.3 || ~5.0 || ~7.0 || ~8.0 || dev-master",
         "ext-json": "*"
     },
     "autoload": {