title: Jira - Removing items from Kanban board once released
body: <p>I've created a Kanban board to keep track of our items. Those items all have sub-tasks. So I've set the Swimlanes to Stories, so developers can easily update their sub-tasks by moving cards.</p>
  
  <p>Issue is that I want to remove those items whose fix version is released. The board's Sub-Filter already takes care of this:
  fixVersion in unreleasedVersions() OR fixVersion is EMPTY</p>
  
  <p>However, we are only setting the fix version on the main items, not on the sub-tasks. As a result, the sub-tasks continue to be selected even if their main items are not (because the fix version is a released version). Because of this, those items remain on the board, because their sub-tasks are still selected.</p>
  
  <p>How can I hide items and their sub-tasks, even if the sub-tasks are still selected?
  Alternatively, if somebody sets the fix version of an item, how can I automatically update its sub-tasks with the same fix version?</p>