remove replace option

composer.json

@@ -17,12 +17,15 @@
   ],
   "minimum-stability": "alpha",
   "prefer-stable": true,
-  "replace": {
-    "drupal/core": "*"
-  },
   "require": {
+    "composer/installers": "^1.7",
+    "oomphinc/composer-installers-extender": "^1.1",
+    "drupal/bamboo_twig": "^5.0",
+    "drupal/components": "^1.1"
   },
   "require-dev": {
+    "drupal/twig_vardumper": "^1.2",
+    "it-osu-web/it-osu-pl-drupal": "^1.0@beta"
   },
   "extra": {
     "installer-types": [