Newsletter 9: Tetra (#113)

* Add Tetra content for newsletter 9

* Newsletter 9: Tetra: fmt

Co-authored-by: Andrey Lesnikov <[email protected]>

Author: 17cupsofcoffee

content/posts/newsletter-009/index.md

@@ -54,6 +54,32 @@ If needed, a section can be split into subsections with a "------" delimiter.
 
 ## Library & Tooling Updates
 
+### [Tetra][tetra]
+
+[Tetra][tetra] is a simple 2D game framework, inspired by XNA and Raylib.
+After a quiet few months, versions [0.3.3][tetra-033], [0.3.4][tetra-034]
+and [0.3.5][tetra-035] were all released over the course of April.
+
+Highlights of this month's updates include:
+
+- New integrations with the OS, such as file dropping and clipboard manipulation
+- More utilities for working with mouse and keyboard input
+- Enhancements to the animation API
+- Various under-the-hood improvements and optimizations
+
+[Tetra's website][tetra-website] has also had an overhaul,
+and is [looking for contributions to the showcase section][tetra-showcase].
+If you're working on a project with Tetra, submit an issue or a PR
+to the [website repo][tetra-website-repo] to get it added!
+
+[tetra]: https://github.com/17cupsofcoffee/tetra
+[tetra-033]: https://twitter.com/17cupsofcoffee/status/1246407935980339200
+[tetra-034]: https://twitter.com/17cupsofcoffee/status/1249410227935510536
+[tetra-035]: https://twitter.com/17cupsofcoffee/status/1254076418365030400
+[tetra-website]: https://tetra.seventeencups.net/
+[tetra-showcase]: https://twitter.com/17cupsofcoffee/status/1255901557322928128
+[tetra-website-repo]: https://github.com/17cupsofcoffee/tetra-www
+
 ## Popular Workgroup Issues in Github
 
 <!-- Up to 10 links to interesting issues -->
@@ -116,4 +142,4 @@ TODO: Add real links and un-comment once this post is published
 -->
 
 [/r/rust_gamedev]: https://reddit.com/r/rust_gamedev
-[@rust_gamedev]: https://twitter.com/rust_gamedev
+[@rust_gamedev]: https://twitter.com/rust_gamedev