PHP 7.3 and fix Symfony repositories to 4.2.*

Author: steevanb

.env

@@ -0,0 +1,12 @@
+# This file defines all environment variables that the application needs.
+# DO NOT DEFINE PRODUCTION SECRETS IN THIS FILE.
+# Use ".env.local" for local overrides during development.
+# Use real environment variables when deploying to production.
+# https://symfony.com/doc/current/best_practices/configuration.html#infrastructure-related-configuration
+
+###> symfony/framework-bundle ###
+APP_ENV=prod
+APP_SECRET=aefe77bc7f7c4e0275029fc97bc13506
+#TRUSTED_PROXIES=127.0.0.1,127.0.0.2
+#TRUSTED_HOSTS='^localhost|example\.com$'
+###< symfony/framework-bundle ###

composer.json

@@ -31,20 +31,21 @@
         "symfony/polyfill-php70": "*",
         "symfony/polyfill-php56": "*"
     },
-    "scripts": {
-        "auto-scripts": {
-            "cache:clear": "symfony-cmd",
-            "assets:install %PUBLIC_DIR%": "symfony-cmd"
-        },
-        "post-install-cmd": [
-            "@auto-scripts"
-        ],
-        "post-update-cmd": [
-            "@auto-scripts"
-        ]
-    },
     "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": ">=4.3.0",
+        "symfony/http-foundation": ">=4.3.0",
+        "symfony/event-dispatcher": ">=4.3.0",
+        "symfony/debug": ">=4.3.0",
+        "symfony/http-kernel": ">=4.3.0",
+        "symfony/finder": ">=4.3.0",
+        "symfony/filesystem": ">=4.3.0",
+        "symfony/dependency-injection": ">=4.3.0",
+        "symfony/config": ">=4.3.0",
+        "symfony/var-exporter": ">=4.3.0",
+        "symfony/cache": ">=4.3.0"
     },
     "extra": {
         "symfony": {