Release 1.28 (#3587)

* bump version
* extract toolbar cleanup logic to helper class
* allow 3 digits in invoice template tax rate

src/Constants.php

@@ -17,11 +17,11 @@ class Constants
     /**
      * The current release version
      */
-    public const VERSION = '1.27.0';
+    public const VERSION = '1.28.0';
     /**
      * The current release: major * 10000 + minor * 100 + patch
      */
-    public const VERSION_ID = 12700;
+    public const VERSION_ID = 12800;
     /**
      * The current release status, either "stable" or "dev"
      */