update changelog

Author: Kriechi

CHANGELOG.rst

@@ -9,17 +9,21 @@ dev
 - Support for Python 3.6 has been removed.
 - Support for Python 3.7 has been removed.
 - Support for Python 3.8 has been removed.
+- Remove mistakenly set `max_inbound_frame_size` attribute on `H2Stream`.
 
 **API Changes (Backward Compatible)**
 
 - Support for Python 3.11 has been added.
 - Support for Python 3.12 has been added.
 - Support for Python 3.13 has been added.
-- Added typing information.
+- Add an ability to send outbound cookies separately to improve headers compression.
+- Updated packaging and testing infrastructure.
 
 **Bugfixes**
 
--
+- Fix repr() checks for Python 3.11
+- Fix asyncio / wsgi examples.
+- Clarify docs on using curl with http2.
 
 4.1.0 (2021-10-05)
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