chore: prepare release (#1877)

Author: willydouhard

CHANGELOG.md

@@ -4,6 +4,18 @@ All notable changes to Chainlit will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
+## [2.2.0] - 2025-02-08
+
+### Added
+
+- You can now add custom buttons in the header
+
+### Fixed
+
+- Step open/close is now animated
+- prevent unstyled flash when streaming code blocks
+- Docking/undocking scroll while streaming show now work better
+
 ## [2.1.2] - 2025-02-05
 
 ### Fixed

backend/chainlit/version.py

@@ -5,4 +5,4 @@
 except metadata.PackageNotFoundError:
     # Case where package metadata is not available, default to a 'non-outdated' version.
     # Ref: config.py::load_settings()
-    __version__ = "2.1.2"
+    __version__ = "2.2.0"

backend/pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "chainlit"
-version = "2.1.2"
+version = "2.2.0"
 keywords = [
     'LLM',
     'Agents',