This release mostly exists to update the Gradle (to 7.1.1), Gretty (away from the hacky JitPack release and on to the official 3.0.6), and Android Gradle Plugin (to 4.2.0) versions. It also adds gdx-gltf, which I couldn't believe I had forgotten in the third-party extensions; if you don't know it, gdx-gltf is a much better way of handling 3D graphics and assets in libGDX. SquidLib was also updated a little. There are some comments in the GWT files that detail how you can switch to a GWT 2.9.0 backend, if you want. In general, a small set of useful updates.