Merge pull request #47 from Kekos/support-php-8

Support for PHP 8

Author: WyriHaximus

.gitignore

@@ -1 +1,2 @@
 /vendor/
+.phpunit.result.cache

composer.json

@@ -12,12 +12,12 @@
         }
     ],
     "require": {
-        "php": "^7.0",
+        "php": "^7.0 || ~8.0",
         "psr/http-message": "^1.0"
     },
     "require-dev": {
         "guzzlehttp/psr7": "^1.3",
-        "phpunit/phpunit": "^6.0",
+        "phpunit/phpunit": "^9.0",
         "squizlabs/php_codesniffer": "^3.3"
     },
     "autoload": {
@@ -33,7 +33,7 @@
     "config": {
         "sort-packages": true,
         "platform": {
-            "php": "7.0"
+            "php": "8.0"
         }
     },
     "scripts": {