[committed] Add some more C++26 library features

[Jonathan Wakely]

Pushed to wwwdocs.

---
 htdocs/gcc-16/changes.html | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/htdocs/gcc-16/changes.html b/htdocs/gcc-16/changes.html
index 3104164c..b1085206 100644
--- a/htdocs/gcc-16/changes.html
+++ b/htdocs/gcc-16/changes.html
@@ -352,11 +352,14 @@ struct Affected : E
     <li>
       <code>ranges::starts_with</code> and <code>ranges::ends_with</code>.
     </li>
+    <li><code>std::allocator_traits::allocate_at_least</code>.</li>
     </ul>
   </li>
   <li>Improved experimental support for C++26, including:
     <ul>
+    <li><code>std::simd</code>.</li>
     <li><code>std::inplace_vector</code>.</li>
+    <li><code>std::optional<T&></code>.</li>
     <li>
       <code>std::copyable_function</code> and <code>std::function_ref</code>.
     </li>
@@ -374,6 +377,8 @@ struct Affected : E
       <code>std::constant_wrapper</code>, and <code>std::submdspan</code>
       thanks to Luc Grosheintz.
     </li>
+    <li><code>std::philox_engine</code>, thanks to 1nfocalypse.</li>
+    <li><code>std::atomic_ref::address()</code>, thanks to Yuao Ma.</li>
     </ul>
   </li>
 </ul>
-- 
2.53.0