chore: prepare for 6.2.0 release

Author: nlfiedler

CHANGELOG.md

@@ -5,7 +5,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 This file follows the convention described at
 [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 
-## [Unrealeased]
+## [6.2.0] - 2024-07-22
 ### Changed
 - JonasWanke: allow nullable values in `Some` and `Ok`
 

pubspec.yaml

@@ -1,6 +1,6 @@
 name: oxidized
 description: Definitions of Rust-like types, Option and Result, to promote safer programming.
-version: 6.1.0
+version: 6.2.0
 homepage: https://github.com/nlfiedler/oxidized
 repository: https://github.com/nlfiedler/oxidized.git
 issue_tracker: https://github.com/nlfiedler/oxidized/issues