update2

pfosten/vendor/symfony/var-dumper/composer.json

@@ -16,7 +16,7 @@
         }
     ],
     "require": {
-        "php": ">=5.5.9",
+        "php": "^5.5.9|>=7.0.8",
         "symfony/polyfill-mbstring": "~1.0"
     },
     "require-dev": {
@@ -28,6 +28,7 @@
     },
     "suggest": {
         "ext-iconv": "To convert non-UTF-8 strings to UTF-8 (or symfony/polyfill-iconv in case ext-iconv cannot be used).",
+        "ext-intl": "To show region name in time zone dump",
         "ext-symfony_debug": ""
     },
     "autoload": {
@@ -40,7 +41,7 @@
     "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
-            "dev-master": "3.3-dev"
+            "dev-master": "3.4-dev"
         }
     }
 }