add pr #32 to changelog [ci skip]

Author: bradrydzewski

CHANGELOG.md

@@ -5,6 +5,9 @@ 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
+- Support Before sha for Bitbucket, from [@jkdev81](https://github.com/jkdev81).
+
 ### Fixed
 - Fix issue getting a GitLab commit by ref, from [@bradrydzewski](https://github.com/bradrydzewski).