Add Github Actions CI

.github/workflows/ci.yml

@@ -0,0 +1,55 @@
+name: "Run Tests"
+on: [push, pull_request, workflow_dispatch]
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  unit-tests:
+    name: "Unit Tests"
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 10
+
+    strategy:
+      matrix:
+        include:
+          - os: ubuntu-20.04
+            python-version: "3.6"
+          - os: ubuntu-latest
+            python-version: "3.7"
+          - os: ubuntu-latest
+            python-version: "3.8"
+          - os: ubuntu-latest
+            python-version: "3.9"
+          - os: ubuntu-latest
+            python-version: "3.10"
+          - os: ubuntu-latest
+            python-version: "3.11"
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Upgrade pip
+        run: |
+          python -m pip install -U pip
+
+      - name: Configure environments
+        run: |
+          python --version
+
+      - name: Install dependencies
+        run: |
+          pip install -e ".[test]"
+          python -m imgcat --version
+
+      - name: Run tests
+        run: |
+          pytest --color=yes -v -s
+        env:
+          PYTHONIOENCODING: UTF-8

.github/workflows/pypi-release.yml

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+name: Publish to PyPI
+on:
+  push:
+    tags:
+      - '*'
+
+jobs:
+  build-and-release:
+  name: Build and make a release
+  runs-on: ubuntu-latest
+
+  steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: "3.11"
+
+    - name: Upgrade pip
+      run: |
+        python -m pip install -U pip
+
+    - name: Configure environments
+      run: |
+        python --version
+
+    - name: Install dependencies
+      run: |
+        pip install -e ".[test]"
+
+    - name: Run tests
+      run: |
+        pytest --color=yes -v -s
+      env:
+        PYTHONIOENCODING: UTF-8
+
+    - name: Build a source distribution
+      run: >-
+        GPUSTAT_VERSION=${{ steps.tag.outputs.TAG_NAME }} python setup.py sdist
+
+    - name: Publish to PyPI
+      uses: pypa/gh-action-pypi-publish@master
+      with:
+        password: ${{ secrets.PYPI_API_TOKEN }}