update changelog

Author: vladdeSV

CHANGELOG.md

@@ -5,10 +5,15 @@ 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]
+
+## [1.2.0] - 2022-03-31
 ### Added
 - Multiline entry summary syntax highlight
 - Allow "nightly" versions of klog binary, where version is `v?.?`
 
+### Changed
+- Allow dashes in tags
+
 ## [1.1.0] - 2022-02-24
 ### Added
 - Language server