update changelog

Author: pythops

CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
+## [0.7] 12/08/2023
+
+### Features
+
+- Support streamig responses for ChatGPT
+
 ## [0.6] 27/04/2023
 
 ### Features