Update CHANGELOG.md

CHANGELOG.md

@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [v0.21-alpha] - 2022-07-24
+### Added
+- Sales resource by @TVke in https://github.com/timothydc/laravel-lightspeed-retail-api/pull/18
+
 ## [v0.20-alpha] - 2022-02-20
 ### Added
 - PHP 8.0 support
@@ -18,7 +22,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 - Everything. Initial alpha release
 
-[Unreleased]: https://github.com/timothydc/laravel-lightspeed-retail-api/compare/v0.20-alpha...HEAD
+[Unreleased]: https://github.com/timothydc/laravel-lightspeed-retail-api/compare/v0.21-alpha...HEAD
+[v0.21-alpha]: https://github.com/timothydc/laravel-lightspeed-retail-api/compare/v0.20-alpha...v0.21-alpha
 [v0.20-alpha]: https://github.com/timothydc/laravel-lightspeed-retail-api/compare/v0.19-alpha...v0.20-alpha
 [v0.19-alpha]: https://github.com/timothydc/laravel-lightspeed-retail-api/compare/v0.18-alpha...v0.19-alpha
 [v0.18-alpha]: https://github.com/timothydc/laravel-lightspeed-ecom-product-feeds/releases/tag/v0.18-alpha