eZ Platform kernel Symfony 4.0 "compatibility": In case someone wants to help start to fix Sf4.x support in thirdparty dependencies

composer.json.diff

diff --git a/composer.json b/composer.json
index 4c0dac0129..609e3c807d 100644
--- a/composer.json
+++ b/composer.json
@@ -17,27 +17,23 @@
         "ext-SPL": "*",
         "ext-xsl": "*",
         "ext-curl": "*",
-        "symfony/symfony": "^3.4",
-        "symfony-cmf/routing": "^1.1|^2.0",
+        "symfony/symfony": "^3.4||^4.0",
+        "symfony-cmf/routing": "^2.1.0",
         "kriswallsmith/buzz": "~0.17.0",
-        "sensio/distribution-bundle": "^5.0",
         "nelmio/cors-bundle": "^1.3.3",
-        "hautelook/templated-uri-bundle": "^2.0",
+        "hautelook/templated-uri-bundle": "dev-#19",
         "pagerfanta/pagerfanta": "~1.0",
         "ocramius/proxy-manager": "^2.0",
         "doctrine/doctrine-bundle": "~1.3",
         "liip/imagine-bundle": "^2.0",
         "oneup/flysystem-bundle": "^3.0",
-        "friendsofsymfony/http-cache-bundle": "^1.3.8|^2.1.0",
+        "friendsofsymfony/http-cache-bundle": "^2.2.0",
         "sensio/framework-extra-bundle": "^5.1",
-        "jms/translation-bundle": "^1.0",
+        "jms/translation-bundle": "^1.4.3",
         "twig/twig": "~1.27|~2.0"
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "~2.7.1",
         "phpunit/phpunit": "^7.0",
         "matthiasnoback/symfony-dependency-injection-test": "~3.0",
-        "symfony/assetic-bundle": "~2.3",
         "ezsystems/behatbundle": "^6.1"
     },
     "conflict": {
@@ -61,7 +57,7 @@
     "config": {
         "process-timeout": 3000,
         "platform": {
-            "php": "7.1"
+            "php": "7.1.3"
         }
     },
     "scripts": {