Release 3.0.0 (#75)

Support php8

Author: calbrecht

box.json

@@ -29,5 +29,5 @@
     ],
     "git-commit": "git-commit",
     "git-version": "git-version",
-    "output": "phpcb-2.4.0.phar"
+    "output": "phpcb-3.0.0.phar"
 }