Merge pull request #14 from esetnik/patch-2

Support psr/http-message ^2.0

Author: akrabat

composer.json

@@ -15,7 +15,7 @@
         }
     ],
     "require": {
-        "psr/http-message": "^1.0",
+        "psr/http-message": "^1.0 || ^2.0",
         "psr/http-server-middleware": "^1.0"
     },
     "require-dev": {