update readthedocs.yml to v2

Author: mikofski

readthedocs.yml

@@ -1,7 +1,41 @@
+# .readthedocs.yaml
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+# Required
+version: 2
+
+# Set the version of Python and other tools you might need
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.9"
+
+# Build documentation in the docs/ directory with Sphinx
+sphinx:
+  configuration: docs/sphinx/source/conf.py
+
+# If using Sphinx, optionally build your docs in additional formats such as PDF
+# formats:
+#    - pdf
+
+# Optionally declare the Python requirements required to build your docs
 python:
-    version: 3
-    # only use the packages specified in setup.py
-    use_system_site_packages: false
-    pip_install: true
+  install:
+  # - requirements: docs/requirements.txt
+  - method: pip
+    path: .
     extra_requirements:
-        - doc
+    - docs
+
+    # python.version deprecated in v2 replaced by build.tools.python
+    # version: 3  
+
+    # setup_py_install replaced by python.install in v2
+    # only use the packages specified in setup.py
+
+    # renamed to python.system_packages in v2
+    # use_system_site_packages: false
+
+    # replaced by python.install in v2
+    # pip_install: true