Update CHANGES.rst

CHANGES.rst

@@ -3,24 +3,29 @@
 	SPDX-License-Identifier: BSD-2-Clause
 	See LICENSE file for full text of license
 
-===================
-About this document
-===================
+==============
+SLASH/ Changes
+==============
 
 .. keep this section at the top!
 
 This document contains a log of noteworthy changes to SLASH/ from new
 to old.
 
-==============
-SLASH/ Changes
-==============
-
 fellow
 ======
 
   .. https://gitlab.com/uplex/varnish/slash/-/commit/
 
+* The ``objsize_hint`` tunable has been removed. The now internal
+  varable is now automatically adjusted within bounds configured by
+  the new tunables ``objsize_update_min_log2_ratio``,
+  ``objsize_update_max_log2_ratio``, ``objsize_update_min_occupancy``
+  and ``objsize_update_max_occupancy``.
+
+* fellow now imposes stricter tests on the amount of memory configured
+  for loading an existing cache.
+
 * The ``ioerr_obj=purge`` and ``allocerr_obj=purge`` tunables are now
   fully implemented. The statistics counter ``c_mem_obj_fail`` as been
   added to track the number of times a failed object is hit.