Add workflows for tests and release

.github/workflows/arch.yml

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+name: pytest-arch
+run-name: Run pytest on Arch Linux
+on:
+  push:
+    branches: 'main'
+  pull_request:
+jobs:
+  pytest:
+    runs-on: archlinux:latest
+    strategy:
+        matrix:
+            python-version: ["3.9", "3.13"]
+    name: pytest-arch-python-${{ matrix.python-version }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install dependencies
+        run: |
+          pip3 install .[tests]
+      - name: Run pytest
+        env:
+          PYTEST_ADDOPTS: "--color=yes"
+        run: |
+          python3 -m pytest -v -n auto

.github/workflows/macOS.yml

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+name: pytest-macos
+run-name: Run pytest on macOS
+on:
+  push:
+    branches: 'main'
+  pull_request:
+
+jobs:
+  pytest:
+    runs-on: macos-latest
+    strategy:
+        matrix:
+            python-version: ["3.9", "3.13"]
+    name: pytest-macos-python-${{ matrix.python-version }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Install Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Set up Homebrew
+        uses: Homebrew/actions/setup-homebrew@master
+      - name: Install Homebrew dependencies
+        run: |
+          rm -f /usr/local/bin/2to3* /usr/local/bin/python3* /usr/local/bin/idle3* \
+          /usr/local/bin/pydoc3* # Homebrew will fail if these exist
+          brew install virtualenv
+      - name: Install Python dependencies
+        run: |
+          python3 -m venv .venv
+          source .venv/bin/activate
+          pip install .[tests]
+      - name: Run pytest
+        env:
+          PYTEST_ADDOPTS: "--color=yes"
+        run: |
+          source .venv/bin/activate
+          pytest -v -n auto

.github/workflows/release.yml

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+name: publish
+run-name: Publish to PyPi
+on:
+  release:
+    types: [published]
+
+permissions:
+  contents: write
+
+jobs:
+  build-and-publish:
+    name: Build and publish to PyPi
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: 3.11
+      - name: Install build
+        run: |
+          python3 -m pip install build
+          python3 -m pip install setuptools --upgrade
+      - name: Build
+        run: |
+          python3 -m build --sdist --wheel --outdir dist/ .
+      - name: Upload to release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          gh release upload ${{ github.event.release.tag_name }} dist/*
+      - name: Publish
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          password: ${{ secrets.TOKEN }}

.github/workflows/ubuntu.yml

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+name: pytest-ubuntu
+run-name: Run pytest on Ubuntu
+on:
+  push:
+    branches: 'main'
+  pull_request:
+jobs:
+  pytest:
+    runs-on: ubuntu:latest
+    strategy:
+        matrix:
+            python-version: ["3.9", "3.13"]
+    name: pytest-ubuntu-python-${{ matrix.python-version }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install dependencies
+        run: |
+          pip3 install .[tests]
+      - name: Run pytest
+        env:
+          PYTEST_ADDOPTS: "--color=yes"
+        run: |
+          python3 -m pytest -v -n auto