 <em><a href="#Instructions_for_specific_versions">Instructions for Specific Versions</a></em>
  describes changes required from one version to the next. These changes
        apply to every upgrade method.</p>
    
    <p class="warning"><strong>Warning!</strong><br/>
        You must use the same upgrade technique as your initial install!
        For example, if you used <span class="code">setup.py</span> to install
        <span class='code'>weewx</span>, you should use
        <span class="code">setup.p