Add CI for Python 3.11-3.14 with linting and type checking

.github/workflows/ci.yml

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+name: CI
+
+on:
+  push:
+    branches: [ main, master ]
+  pull_request:
+    branches: [ main, master ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    strategy:
+      matrix:
+        python-version: ["3.11", "3.12", "3.13", "3.14"]
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python-version }}
+        allow-prereleases: true
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r requirements.txt
+        pip install mypy ruff
+
+    - name: Lint with ruff
+      run: |
+        ruff check winnowing tests
+
+    - name: Type check with mypy
+      run: |
+        mypy winnowing --ignore-missing-imports
+
+    - name: Test with pytest
+      run: |
+        pytest tests --cov winnowing --durations=10

.gitignore

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 *.pyc
+.coverage
 

pyproject.toml

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+[tool.ruff.lint]
+select = ["E", "F", "W", "I"]
+ignore = []
+
+# Allow star imports in test files
+[tool.ruff.lint.per-file-ignores]
+"tests/*" = ["F403", "F405"]