Drop 3.9, add 3.13 and use uv

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.10", "3.11", "3.12","3.13"]
         os: [ubuntu-latest, macos-latest, windows-latest]
 
     runs-on: ${{matrix.os}}
@@ -30,12 +30,13 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip wheel
-          python -m pip install -e ".[dev]"
+          python -m pip install --upgrade uv
+          uv pip install -e ".[dev]"
       - name: Check package versions
         run: |
-          pip show -V elementembeddings
-          pip show -V pytest
-          pip show -V matplotlib
+          uv pip show -V elementembeddings
+          uv pip show -V pytest
+          uv pip show -V matplotlib
 
       - name: Run tests
         run: python -m pytest --mpl --mpl-baseline-path=src/elementembeddings/tests/baseline --cov=src/elementembeddings --cov-report=xml -v