haiku: update changelog

Author: Al Hoang

CHANGELOG.md

@@ -3,6 +3,15 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](https://semver.org/).
 
+## [Unreleased] - 
+### Added
+
+- Fixed compilation and updated support on Haiku
+- Added x86_64-unknown-haiku target to builder
+
+### Changed
+### Fixed
+
 ## [0.24.1] - 2022-04-22
 ### Added
 ### Changed