update changelog

Author: jakewarren

CHANGELOG.md

@@ -4,6 +4,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [1.2.0] - 2019-07-22
+### Fixed
+- Fixed an issue with output being inconsistent between runs. Thanks @reidab!
+
+### Changed
+- If the user doesn't specify a directory, use the current directory as a default.
+- Exclude the vendor directories by default.
 
 ## [1.1.0] - 2017-10-03
 ### Changed