add tree-structured concurrency post

yoshuawuyts · web-flow · commit 9c73e1a55234 · 2023-07-01T01:43:03.000+02:00
diff --git a/draft/2023-07-05-this-week-in-rust.md b/draft/2023-07-05-this-week-in-rust.md
@@ -37,6 +37,8 @@ and just ask the editors to select the category.
 
 ### Observations/Thoughts
 
+- [Tree-Structured Concurrency](https://blog.yoshuawuyts.com/tree-structured-concurrency/)
+
 ### Rust Walkthroughs
 
 ### Research
