i><p class="first">The error messages format has been changed to use named parameters, to
allow more flexibility than what <cite>sprintf()</cite> offers:</p>
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="c1">// Old</span>
<span class="s1">&#39;The %s field does not match the %s field.&#39;</span>

<span class="c1">// New</span>
<span class="s1">&#39;The {field} field does not match the {param} field.&#39;</span>
</pre></div>
</div>
</li>
</ul>
</div></blockquote>
<div class