Update changelog

Author: petetomasik

CHANGELOG.md

@@ -4,6 +4,16 @@ 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/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Added
+* Accept both `artifact_paths` (preferred) and `artifacts` (alternative) field names in plugin configuration for backward compatibility (#120)
+
+### Fixed
+* Fix `artifact_paths` field being ignored when specified in plugin configuration. Both `artifact_paths` and `artifacts` now work correctly (#120)
+* Fix typo in test case: "artifiact" → "artifact"
+* Fix BATS test failures caused by unbound `BUILDKITE_PLUGINS_PATH` variable in hooks/command
+
 ## [v1.6.0]
 
 ### Added