Fix Symfony repositories to 4.0.*

Author: steevanb

composer.json

@@ -4,14 +4,13 @@
     "type": "project",
     "require": {
         "php": "^7.1.3",
-        "phpbenchmarks/symfony-common": "4.3.0",
-        "symfony/console": "^4.0",
+        "phpbenchmarks/symfony-common": "4.3.1",
+        "symfony/console": "4.0.*",
         "symfony/flex": "^1.0",
-        "symfony/framework-bundle": "^4.0",
-        "symfony/lts": "^4@dev",
+        "symfony/framework-bundle": "4.0.*",
         "symfony/serializer-pack": "^1.0",
-        "symfony/translation": "^4.0",
-        "symfony/yaml": "^4.0"
+        "symfony/translation": "4.0.*",
+        "symfony/yaml": "4.0.*"
     },
     "config": {
         "preferred-install": {
@@ -36,7 +35,24 @@
         ]
     },
     "conflict": {
-        "symfony/symfony": "*"
+        "symfony/symfony": "*",
+        "https://github.com/composer/composer/issues/7827": "0.0.0",
+        "https://github.com/symfony/symfony/issues/29581": "0.0.0",
+        "symfony/routing": ">=4.1.0",
+        "symfony/http-foundation": ">=4.1.0",
+        "symfony/event-dispatcher": ">=4.1.0",
+        "symfony/debug": ">=4.1.0",
+        "symfony/http-kernel": ">=4.1.0",
+        "symfony/finder": ">=4.1.0",
+        "symfony/filesystem": ">=4.1.0",
+        "symfony/dependency-injection": ">=4.1.0",
+        "symfony/config": ">=4.1.0",
+        "symfony/var-exporter": ">=4.1.0",
+        "symfony/cache": ">=4.1.0",
+        "symfony/serializer": ">=4.1.0",
+        "symfony/inflector": ">=4.1.0",
+        "symfony/property-info": ">=4.1.0",
+        "symfony/property-access": ">=4.1.0"
     },
     "extra": {
         "symfony": {