reformat for newer versions

mkdocs.yml

@@ -29,9 +29,11 @@ markdown_extensions:
   - pymdownx.snippets
   - pymdownx.superfences
   - tables
-  - mdx_math
+  - pymdownx.arithmatex
+
 extra_javascript: 
-    - https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js?config=TeX-AMS-MML_HTMLorMML
+  - https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js?config=TeX-AMS-MML_HTMLorMML
+  - https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js
 
 extra:
   social:
@@ -44,15 +46,13 @@ plugins:
       default_handler: python
       handlers:
         python:
-          selection:
+          options:
             docstring_style: numpy
-          import:
-            - https://seaborn.pydata.org/objects.inv
-          rendering:
             show_root_heading: true
             heading_level: 3
             docstring_section_style: spacy
             show_source: false
             merge_init_into_class: true
-  - mkdocs-jupyter:
-      # execute: true
+          inventories:
+            - https://seaborn.pydata.org/objects.inv
+  - mkdocs-jupyter