update changelog

Author: wkok

CHANGELOG.md

@@ -4,19 +4,20 @@
 ### Supported API versions
 - OpenAI v1
 - Azure OpenAI 2022-12-01
-### Added
+### Changes
 - Implemented server-sent events using `stream` in `create-completion`
+- Replaced clj-http with hato, falling back to the native Java 11 http client
 
 ## 0.2.0 - 2023-02-15
 ### Supported API versions
 - OpenAI v1
 - Azure OpenAI 2022-12-01
-### Added
+### Changes
 - Azure OpenAI API Support (thanks [Carsten Behring](https://github.com/behrica))
 
 ## 0.1.14 - 2023-02-14
 ### Supported API versions
 - OpenAI v1
-### Added
+### Changes
 - OpenAI API Support
 - Initial release