Added invoice date

Signed-off-by: James Cole <thegrumpydictator@gmail.com>

app/Models/TransactionJournal.php

@@ -237,6 +237,16 @@ class TransactionJournal extends TransactionJournalSupport
         return $value;
     }
 
+    /**
+     * @param string $name
+     *
+     * @return bool
+     */
+    public function hasMeta(string $name): bool
+    {
+        return !is_null($this->getMeta($name));
+    }
+
     /**
      * @return bool
      */