Merge branch '5.1'

* 5.1:
  Allow more PHP versions

Author: fabpot

composer.json

@@ -5,7 +5,7 @@
     "description": "A skeleton to start a new Symfony website",
     "minimum-stability": "dev",
     "require": {
-        "php": "^7.2.5",
+        "php": ">=7.2.5",
         "ext-ctype": "*",
         "ext-iconv": "*",
         "symfony/flex": "^1.3.1"