[DOCS] add video walkthrough to user guide + update version switcher (#…

…201)

* [skip ci] add 0.4.1 and 0.5.0

* [skip ci] add video walkthrough

docs/_static/switcher.json

@@ -4,10 +4,20 @@
         "url": "https://wsinfer.readthedocs.io/en/latest/"
     },
     {
-        "name": "0.4.0 (stable)",
-        "version": "v0.4.0",
+        "name": "0.5.0 (stable)",
+        "version": "v0.5.0",
         "url": "https://wsinfer.readthedocs.io/en/stable/"
     },
+    {
+        "name": "0.4.1",
+        "version": "v0.4.1",
+        "url": "https://wsinfer.readthedocs.io/en/v0.4.1/"
+    },
+    {
+        "name": "0.4.0",
+        "version": "v0.4.0",
+        "url": "https://wsinfer.readthedocs.io/en/v0.4.0/"
+    },
     {
         "name": "0.3.6",
         "version": "v0.3.6",

docs/user_guide.rst

@@ -11,6 +11,17 @@ https://openslide.cs.cmu.edu/download/openslide-testdata/Aperio/.
 
 The rest of this page assumes that slides are saved to the directory :code:`slides`.
 
+Video walkthrough
+-----------------
+
+In this video, Jakub demonstrates from beginning to end how one can use WSInfer to detect
+tumor regions in a whole slide image. He shows how to install PyTorch and WSInfer,
+use the command line :code:`wsinfer` tool, and visualize results in QuPath.
+
+.. raw:: html
+
+   <iframe width="560" height="315" src="https://www.youtube.com/embed/0X86_A4vopw?si=JtXsmBd8OUcDndS5" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>
+
 Getting help
 ------------