eewx.stats.TaggedStats</span></li>
        <li><span class="code">weewx.stats.TimeSpanStats</span></li>
    </ul>
    <p>The example of writing a custom generator <span class="code">MyFileGenerator</span>
        (which produced &quot;all time&quot; statistics) has been changed to reflect the new
        signatures.</p>
    
    <p>This will only affect you if you have written a custom generator.</p>
    
    <h2>From V1.7.0 or earlier</h2>
    
    <p>With the introduction of a standard archiving service, 