Newsletter 13: Tetra content (#252)

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

Author: 17cupsofcoffee

content/posts/newsletter-013/index.md

@@ -184,6 +184,23 @@ are common in games. While fully functional, the code is still in an early
 state and any suggestions for improvements - especially on how best to
 integrate it with the existing ecosystem - are greatly appreciated.
 
+### Tetra
+
+[Tetra] is a simple 2D game framework, inspired by XNA and Raylib. This month,
+versions [0.4.1][tetra-041] and [0.4.2][tetra-042] were released, featuring:
+
+- Improved Serde support
+- Various fixes and improvements to the built-in `Camera` type
+- Many documentation improvements, based on user feedback
+
+In addition, Tetra 0.5 is planned for release in early September. For more
+information on the upcoming changes, see the [changelog][tetra-changelog].
+
+[tetra]: https://github.com/17cupsofcoffee/tetra
+[tetra-041]: https://twitter.com/17cupsofcoffee/status/1289857217198317568
+[tetra-042]: https://twitter.com/17cupsofcoffee/status/1294316642680426497
+[tetra-changelog]: https://github.com/17cupsofcoffee/tetra/blob/main/CHANGELOG.md
+
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