<p>I really like this idea. My only question is about the <code>exempt labels</code> list, maybe other labels should be added. I'm not sure if its good for <code>bugs issues</code> to get automatically closed, not in all cases at least, weird border cases that might have been hard to find might get covered up again if the issue is closed. Maybe a new label <code>known issues</code> can be added, for issues like <a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="25485803" data-permission-text="Issue title is private" data-url="https://github.com/RIOT-OS/RIOT/issues/495" data-hovercard-type="issue" data-hovercard-url="/RIOT-OS/RIOT/issues/495/hovercard" href="https://github.com/RIOT-OS/RIOT/issues/495">#495</a> for example; so those ones don't get closed.</p>

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