First attempt at some documentation

.github/workflows/docs.yml

@@ -0,0 +1,42 @@
+name: docs
+on:
+  push:
+    branches:
+      - main
+permissions:
+  contents: write
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: 3.x
+
+      - run: echo "cache_id=$(date --utc '+%V')" >> $GITHUB_ENV
+
+      - name: Set up build cache
+        uses: actions/cache/restore@v4
+        with:
+          key: mkdocs-material-${{ hashfiles('.cache/**') }}
+          path: .cache
+          restore-keys: |
+            mkdocs-material-
+      - run: pip install mkdocs-material
+      - run: mkdocs build --clean
+
+      - name: Upload to GitHub Pages
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: site
+
+      - name: Deploy to GitHub Pages
+        uses: actions/deploy-pages@v4
+
+      - name: Save build cache
+        uses: actions/cache/save@v4
+        with:
+          key: mkdocs-material-${{ hashfiles('.cache/**') }}
+          path: .cache