Merge pull request #227 from ergebnis/fix/changelog

Fix: Update `CHANGELOG.md`

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 [`3.1.0...main`][3.1.0...main].
+
+## [`3.1.0`][3.1.0]
+
+For a full diff see [`3.0.0...3.1.0`][3.0.0...3.1.0].
 
 ### Changed
 
@@ -63,11 +67,13 @@ For a full diff see [`dcd4cfb...1.0.0`][dcd4cfb...1.0.0].
 [1.0.0]: https://github.com/ergebnis/json-schema-validator/releases/tag/1.0.0
 [2.0.0]: https://github.com/ergebnis/json-schema-validator/releases/tag/2.0.0
 [3.0.0]: https://github.com/ergebnis/json-schema-validator/releases/tag/3.0.0
+[3.1.0]: https://github.com/ergebnis/json-schema-validator/releases/tag/3.1.0
 
 [dcd4cfb...1.0.0]: https://github.com/ergebnis/json-schema-validator/compare/dcd4cfb...1.0.0
 [1.0.0...2.0.0]: https://github.com/ergebnis/json-schema-validator/compare/1.0.0...2.0.0
 [2.0.0...3.0.0]: https://github.com/ergebnis/json-schema-validator/compare/2.0.0...3.0.0
-[3.0.0...main]: https://github.com/ergebnis/json-schema-validator/compare/3.0.0...main
+[3.0.0...3.1.0]: https://github.com/ergebnis/json-schema-validator/compare/3.0.0...3.1.0
+[3.1.0...main]: https://github.com/ergebnis/json-schema-validator/compare/3.1.0...main
 
 [#2]: https://github.com/ergebnis/json-schema-validator/pull/2
 [#3]: https://github.com/ergebnis/json-schema-validator/pull/3