Show that we support PHP8 (#238)

Nyholm · web-flow · commit 40edebf1a279 · 2020-11-27T16:32:20.000+01:00
diff --git a/composer.json b/composer.json
@@ -20,7 +20,7 @@
         }
     ],
     "require": {
-        "php": "^5.6 || ^7.0",
+        "php": "^5.6 || ^7.0 || ^8.0",
         "psr/cache": "^1.0",
         "psr/simple-cache": "^1.0"
     },
