Prepare v0.5.2 release

Author: calind

Changelog.md

@@ -5,6 +5,12 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Added
+### Changed
+### Removed
+### Fixed
+
+## [0.5.2] - 2021-11-23
 ### Added
  * If you want to save mysql backup to AWS S3, `AWS_ACCESS_KEY_ID` and `AWS_SECRET_ACCESS_KEY` were the only options, but now you can use `AWS_SESSION_TOKEN` or `AWS_ROLE_ARN` and `AWS_WEB_IDENTITY_TOKEN_FILE`
 ### Changed