2.4.0

Notable

• upgrade to Scala 3.3.0 and enable unused warnings by @SethTisue in #516
• Update junit-plugin, nscplugin, ... to 0.5.0 by @scala-steward in #549

Also

• Add java 21 to build matrix by @Philippus in #533
• Extend copyright into 2024 by @Philippus in #535
• reset version policy intention by @SethTisue in #515
• use new wildcard syntax by @xuwei-k in #534
• Update auxlib, clib, javalib, junit-plugin, ... to 0.5.1 by @scala-steward in #551
• Update checkout and setup-java github actions to v4 by @Philippus in #532
• Update junit-plugin, junit-runtime, ... to 0.4.14 by @scala-steward in #519
• Update junit-plugin, junit-runtime, ... to 0.4.15 by @scala-steward in #526
• Update junit-plugin, junit-runtime, ... to 0.4.16 by @scala-steward in #530
• Update junit-plugin, junit-runtime, ... to 0.4.17 by @scala-steward in #538
• Update sbt to 1.9.2 by @Philippus in #525
• Update sbt to 1.9.7 by @scala-steward in #531
• Update sbt to 1.9.8 by @scala-steward in #537
• Update sbt to 1.9.9 by @scala-steward in #539
• Update sbt-scala-module to 3.1.0 by @Philippus in #524
• Update sbt-scala-native-crossproject, ... to 1.3.2 by @scala-steward in #523
• Update sbt-scalajs, scalajs-compiler, ... to 1.13.2 by @scala-steward in #522
• Update sbt-scalajs, scalajs-compiler, ... to 1.14.0 by @scala-steward in #529
• Update sbt-scalajs, scalajs-compiler, ... to 1.15.0 by @scala-steward in #536
• Update sbt-scalajs, scalajs-compiler, ... to 1.16.0 by @scala-steward in #545
• Update scala-library to 2.12.18 by @scala-steward in #520
• Update scala-library to 2.12.19 by @scala-steward in #541
• Update scala-library to 2.13.11 by @scala-steward in #521
• Update scala-library to 2.13.12 by @scala-steward in #528
• Update scala-library to 2.13.13 by @scala-steward in #542
• Update scala3-library, ... to 3.3.1 by @scala-steward in #527
• Update scala3-library, ... to 3.3.3 by @scala-steward in #543

Full Changelog: v2.3.0...v2.4.0