Merge pull request #7 from codisart/add-php8-support

Add php8 support and remove obsolete versions

Author: weierophinney

.gitignore

@@ -1,3 +1,4 @@
+/.phpunit.result.cache
 /clover.xml
 /coveralls-upload.json
 /docs/html/

composer.json

@@ -19,7 +19,7 @@
         "sort-packages": true
     },
     "require": {
-        "php": "^5.6 || ^7.0",
+        "php": "^7.3 || ~8.0.0",
         "laminas/laminas-stdlib": "^2.7.7 || ^3.1",
         "laminas/laminas-zendframework-bridge": "^1.0"
     },
@@ -31,7 +31,7 @@
         "laminas/laminas-servicemanager": "^2.7.8 || ^3.3",
         "laminas/laminas-session": "^2.8",
         "laminas/laminas-validator": "^2.10.1",
-        "phpunit/phpunit": "^5.7.27 || ^6.5.8 || ^7.1.2"
+        "phpunit/phpunit": "^9.3.0"
     },
     "suggest": {
         "laminas/laminas-filter": "Laminas\\Filter component",