Update changelog.

Signed-off-by: regorxxx <[email protected]>

docs/index.html

@@ -773,6 +773,8 @@ <h3 id="unreleased">unreleased</h3>
 <li>added LAB, LCH, OKLCH and OKLAB support in <code>chroma.css()</code> <a href="https://github.com/gka/chroma.js/issues/325">Issue 325</a></li>
 <li>added LAB, LCH, OKLCH and OKLAB CSS support in &quot;chroma()&quot;. i.e. CSS expressions are also interpreted as colors <code>chroma(&quot;lch(48.25% 30.07% 196.38)&quot;)</code></li>
 <li>added weights for every component at <code>chroma.distance()</code> (@lulunac27a)</li>
+<li>added chroma.stdDeviation() to retrieve the variance in an array of colors as an RGBA component. See [Issue 328] (<a href="https://github.com/gka/chroma.js/issues/328#issuecomment-1951628498">https://github.com/gka/chroma.js/issues/328#issuecomment-1951628498</a>)</li>
+<li>added chroma.palette() to retrieve the n-most representative colors in an array of colors. See [Issue 328] (<a href="https://github.com/gka/chroma.js/issues/328#issuecomment-1951628498">https://github.com/gka/chroma.js/issues/328#issuecomment-1951628498</a>)</li>
 <li>improved support for OKLCH colors using <code>chroma.average()</code> or <code>chroma.distance()</code> (@lulunac27a)</li>
 <li>added &#39;supported color spaces&#39; to documentation</li>
 <li>minor improvements to documentation</li>