WXCalculate service. Drivers should no
            longer calculate derived quantities such as windchill, heatindex,
            dewpoint, or rain rate.</p>

        <h3>Driver APIs</h3>

        <p>The base class for drivers has been renamed, and new, optional,
            methods have been defined to provide hooks for configuring hardware
            and producing default and upgraded configuration stanzas.</p>

        <p>These changes affect only those who have written custom drivers.</p>
        <table