Add release notes entry for unstack

asmeurer · asmeurer · commit 5739e143cb9f · 2024-06-25T15:07:02.000-06:00
diff --git a/doc/release/upcoming_changes/26579.new_function.rst b/doc/release/upcoming_changes/26579.new_function.rst
@@ -0,0 +1,5 @@
+New function ``unstack()``
+--------------------------
+
+A new function ``unstack()``, which splits an array into a tuple of arrays
+along an axis. It serves as the inverse of ``np.stack()``.
