Add "conflic" declaration

martin-helmich · martin-helmich · commit c18b91d3eb19 · 2019-03-22T18:36:38.000+01:00
diff --git a/composer.json b/composer.json
@@ -13,6 +13,9 @@
         "flow/jsonpath": "^0.4.0",
         "justinrainbow/json-schema": "^5.0"
     },
+    "conflict": {
+        "phpunit/phpunit": "<6.0 || >= 8.0"
+    },
     "require-dev": {
         "phpunit/phpunit": "^6.0 | ^7.0"
     },
