Merge pull request #1 from ThreeSixtyEu/master

enabled compatibility with psr/http-message ^2.0

Author: Tetragramat

.gitignore

@@ -3,3 +3,5 @@
 composer.lock
 .phpunit.result.cache
 .platform_versions
+
+.idea

composer.json

@@ -8,7 +8,7 @@
         "php": ">=7.4",
         "ext-simplexml": "*",
         "ext-libxml": "*",
-        "psr/http-message": "^1.0",
+        "psr/http-message": "^1.0 | ^2.0",
         "psr/http-client": "^1.0",
         "psr/http-factory": "^1.0"
     },