Update composer.json (#15)

Author: andreybolonin

composer.json

@@ -19,11 +19,11 @@
   "require": {
     "php": "^7.0",
     "fourlabs/qbjs-parser": "~1.0",
-    "symfony/config": "~2.8|~3.0|~3.1",
-    "symfony/dependency-injection": "~2.8|~3.0|~3.1",
-    "symfony/http-kernel": "~2.8|~3.0|~3.1",
-    "symfony/event-dispatcher": "~2.8|~3.0|~3.1",
-    "symfony/property-info": "~2.8|~3.0|~3.1"
+    "symfony/config": "~2.8|~3.0|~3.1|^4.0|^5.0",
+    "symfony/dependency-injection": "~2.8|~3.0|~3.1|^4.0|^5.0",
+    "symfony/http-kernel": "~2.8|~3.0|~3.1|^4.0|^5.0",
+    "symfony/event-dispatcher": "~2.8|~3.0|~3.1|^4.0|^5.0",
+    "symfony/property-info": "~2.8|~3.0|~3.1|^4.0|^5.0"
   },
   "autoload": {
     "psr-4": {