Merge pull request #9 from Moxio/php8

PHP 8 support

Author: aboks

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
 
         strategy:
             matrix:
-                php-version: [ '7.3', '7.4' ]
+                php-version: [ '7.3', '7.4', '8.0' ]
 
         steps:
             - name: Checkout code

composer.json

@@ -16,9 +16,9 @@
         }
     },
     "require": {
-        "php": "^7.1",
+        "php": "^7.1 || ^8.0",
         "squizlabs/php_codesniffer": "^3.0.0",
-        "slevomat/coding-standard": "^5.0 || ^6.0"
+        "slevomat/coding-standard": "^6.3.11"
     },
     "require-dev": {
         "phpunit/phpunit": "^8.5.12"