docs(changelog): prepare release

Author: Marc Jakobi

CHANGELOG.md

@@ -6,7 +6,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [1.3.0] - 2023-12-05
 
 - Expressions: Add multi-way if snippet (`ifmw`) [[#16](https://github.com/mrcjkb/haskell-snippets.nvim/pull/16)].
   Thanks [@gregorias](https://github.com/gregorias)!