[auto] adding content to today-expression-function->master (#302)

Co-authored-by: Metabase Docs bot <[email protected]>

Author: github-automation-metabase

_docs/master/developers-guide/driver-changelog.md

@@ -29,6 +29,8 @@ layout: new-docs
 
 - Extend `datetime()` to accept UTF-8 encoded binary and numbers (unix timestamps) in addition to strings.
 
+- Added a feature `:expressions/today` for drivers that support generating a date for the current day.
+
 ## Metabase 0.55.0
 
 - Add the multi-method `->date` that allows the driver to control how to cast strings and temporal types to dates.

_site/docs/master/developers-guide/driver-changelog.html

@@ -4338,6 +4338,9 @@ <h2 id="metabase-0560">Metabase 0.56.0</h2>
   <li>
     <p>Extend <code class="language-plaintext highlighter-rouge">datetime()</code> to accept UTF-8 encoded binary and numbers (unix timestamps) in addition to strings.</p>
   </li>
+  <li>
+    <p>Added a feature <code class="language-plaintext highlighter-rouge">:expressions/today</code> for drivers that support generating a date for the current day.</p>
+  </li>
 </ul>
 
 <h2 id="metabase-0550">Metabase 0.55.0</h2>