DOC: Update changelog for release

CHANGELOG.md

@@ -5,26 +5,18 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased] ##
-
-### Added ###
-
-### Changed ###
+## [0.15.1] - 2024-08-21 ##
 
 ### Deprecated ###
 
 * `connection.get_username`. Use `la.Info().user_info.name` instead.
 
-### Removed ###
-
 ### Fixed ###
 
 * [#128](https://gitlab.com/linkahead/linkahead-pylib/-/issues/128)
   Assign `datetime.date` or `datetime.datetime` values to `DATETIME`
   properties.
 
-### Security ###
-
 ### Documentation ###
 
 * Added docstrings for `linkahead.models.Info` and `linkahead.models.UserInfo`.