updated release notes

Author: spiegelp

ReleaseNotes.md

@@ -188,5 +188,7 @@ Please change your configuration according to [App.xaml](https://github.com/spie
 * Current directory path optionally as text box in file system controls
 * `IconTemplate` property for `NavigationItem`
 * Handle setting of `TabControlStepper.SelectedIndex`
+* Layout improvements for `MaterialWindow`
+* New `SearchBase.CancelIcon` and `SearchBase.ClearIcon` properties
 #### Fixes
 * Fixed reflection code in `ResourceDictionaryExtensions`

docs/snippets/releasenotes.html

@@ -18,6 +18,8 @@ <h3>Features</h3>
         <li>Current directory path optionally as text box in file system controls</li>
         <li><code>IconTemplate</code> property for <code>NavigationItem</code></li>
         <li>Handle setting of <code>TabControlStepper.SelectedIndex</code></li>
+        <li>Layout improvements for <code>MaterialWindow</code></li>
+        <li>New <code>SearchBase.CancelIcon</code> and <code>SearchBase.ClearIcon</code> properties</li>
     </ul>
     <h3>Fixes</h3>
     <ul>