Enhancement: Prepare release

Author: localheinz

CHANGELOG.md

@@ -6,7 +6,11 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## Unreleased
 
-For a full diff see [`2.0.0...main`][2.0.0...main].
+For a full diff see [`2.1.0...main`][2.1.0...main].
+
+## [`2.1.0`][2.1.0]
+
+For a full diff see [`2.0.0...2.1.0`][2.0.0...2.1.0].
 
 ### Changed
 
@@ -66,10 +70,12 @@ For a full diff see [`7afa59c...1.0.0`][7afa59c...1.0.0].
 
 [1.0.0]: https://github.com/ergebnis/phpunit-slow-test-detector/releases/tag/1.0.0
 [2.0.0]: https://github.com/ergebnis/phpunit-slow-test-detector/releases/tag/2.0.0
+[2.1.0]: https://github.com/ergebnis/phpunit-slow-test-detector/releases/tag/2.1.0
 
 [7afa59c...1.0.0]: https://github.com/ergebnis/phpunit-slow-test-detector/compare/7afa59c...1.0.0
 [1.0.0...2.0.0]: https://github.com/ergebnis/phpunit-slow-test-detector/compare/1.0.0...2.0.0
-[2.0.0...main]: https://github.com/ergebnis/phpunit-slow-test-detector/compare/2.0.0...main
+[2.0.0...2.1.0]: https://github.com/ergebnis/phpunit-slow-test-detector/compare/2.0.0...2.1.0
+[2.1.0...main]: https://github.com/ergebnis/phpunit-slow-test-detector/compare/2.1.0...main
 
 [#6]: https://github.com/ergebnis/phpunit-slow-test-detector/pull/6
 [#8]: https://github.com/ergebnis/phpunit-slow-test-detector/pull/8