Merge pull request #81 from localheinz/fix/tilde

Fix: Use `~` operator to limit compatibility with PHP versions

Author: localheinz

composer.json

@@ -20,7 +20,7 @@
         }
     ],
     "require": {
-        "php": "^7.1 || ^8.0"
+        "php": "~7.1.0 || ~7.2.0 || ~7.3.0 || ~7.4.0 || ~8.0.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^7.5 || ^8.0",