Update to the december release notes (#78)

te3/other/release-notes/3_13_0.md

@@ -33,7 +33,7 @@ Tabular Editor 3.3.0 (and newer) uses .NET 6. You may have to install the [.NET
 
 ## New in 3.13.0
 
-Check out our [release blog](https://blog.tabulareditor.com/) to get a brief overview of the most important updates in this release.
+Check out our [release blog](https://blog.tabulareditor.com/2023/12/15/tabular-editor-3-december-2023-release/) to get a brief overview of the most important updates in this release.
 
 ## Improvements in 3.13.0
 

whats-new/3-13-0.html

@@ -0,0 +1,10 @@
+<h2>Tabular Editor 3.13.0</h2>
+<p>Latest release: <a href="https://blog.tabulareditor.com/2023/12/15/tabular-editor-3-december-2023-release//">December 2023</a> (v. 3.13.0, <a href="https://docs.tabulareditor.com/te3/other/release-notes/3_13_0.html">release notes</a>)</p>
+<ul>
+    <li>Highlighting relationships in the TOM Explorer when a table or column is selected</li>
+    <li>Columns in a relationship now have a new "Show Dependencies" display</li>
+    <li>Title bar display of main storage mode</li>
+    <li>Having unprocessed objects such as partitions and calculated tables will show a warning in the Messages window</li>
+    <li>A warning will show for columns used in a sort-by-column if it has the property "Available in MDX" set to false</li>
+    <li><a href="https://docs.tabulareditor.com/te3/other/release-notes/3_13_0.html">And more...</a></li>
+</ul>