Newsletter 10: Add Tetra (#142)

* Add Tetra content for newsletter 10

* Fix Tetra version number

* Change formatting of Tetra section

Co-authored-by: Andrey Lesnikov <ozkriff@gmail.com>

Author: 17cupsofcoffee

content/posts/newsletter-010/index.md

@@ -82,6 +82,22 @@ Crate's repo has few examples with nearly each line of the code explained.
 
 [Goods]: https://crates.io/crates/goods
 
+### [Tetra 0.3.6][tetra-036]
+
+[Tetra] is a simple 2D game framework, inspired by XNA and Raylib. This month,
+[version 0.3.6 was released][tetra-036], featuring:
+
+- A new suite of functions for querying information about the player's connected monitors
+- Tweaks to the startup code, to ensure slow asset loading doesn't cause the window to hang
+- Several under the hood bug fixes
+
+Additionally, planning for 0.4 has begun, which will
+[bring some changes to the `Font`/`Text` API][tetra-040].
+
+[Tetra]: https://github.com/17cupsofcoffee/tetra
+[tetra-036]: https://twitter.com/17cupsofcoffee/status/1261381601524621312
+[tetra-040]: https://twitter.com/17cupsofcoffee/status/1256599606697308164
+
 ## Popular Workgroup Issues in Github
 
 <!-- Up to 10 links to interesting issues -->