Merge branch 'main' into patch-1

Author: fredguth

docs/extensions/listings/custom-formats.yml

@@ -81,3 +81,9 @@
   author: "[Fred Guth](https://github.com/fredguth/)"
   description: |
     Manuscript template inspired by the style of the books from Edward R. Tufte
+
+- name: quarto-live
+  path: https://github.com/r-wasm/quarto-live
+  author: "[George Stagg](https://github.com/georgestagg)"
+  description: |
+    WebAssembly powered "live" formats for Quarto HTML documents and Revealjs slides, adding interactive code blocks and exercises for R and Python.

docs/extensions/listings/revealjs.yml

@@ -139,3 +139,9 @@
   author: "[Sam Parmar](https://github.com/parmsam)"
   description: |
     Adds multiple choice quiz questions to slides.
+
+- name: excalidraw
+  path: https://github.com/parmsam/quarto-excalidraw
+  author: "[Sam Parmar](https://github.com/parmsam)"
+  description: |
+    Adds an empty Excalidraw canvas to your slides for sketching hand-drawn like diagrams.