Remove Travis CI and use GitHub Actions

Author: brandonwillard

.github/FUNDING.yml

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+github: [brandonwillard]

.github/workflows/pypi.yml

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+name: PyPI
+on:
+  push:
+    branches:
+      - master
+      - auto-release
+  pull_request:
+    branches: [master]
+  release:
+    types: [published]
+
+jobs:
+  build:
+    name: Build source distribution
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-python@v2
+        with:
+          python-version: "3.8"
+      - name: Build the sdist
+        run: |
+          python setup.py sdist
+      - name: Check the sdist installs and imports
+        run: |
+          mkdir -p test-sdist
+          cd test-sdist
+          python -m venv venv-sdist
+          venv-sdist/bin/python -m pip install ../dist/cons-*.tar.gz
+      - uses: actions/upload-artifact@v2
+        with:
+          name: artifact
+          path: dist/*
+
+  upload_pypi:
+    name: Upload to PyPI on release
+    needs: [build]
+    runs-on: ubuntu-latest
+    if: github.event_name == 'release' && github.event.action == 'published'
+    steps:
+      - uses: actions/download-artifact@v2
+        with:
+          name: artifact
+          path: dist
+      - uses: pypa/gh-action-pypi-publish@master
+        with:
+          user: __token__
+          password: ${{ secrets.pypi_secret }}

.github/workflows/tests.yml

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+name: Tests
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  changes:
+    name: "Check for changes"
+    runs-on: ubuntu-latest
+    outputs:
+      changes: ${{ steps.changes.outputs.src }}
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - uses: dorny/paths-filter@v2
+        id: changes
+        with:
+          filters: |
+            python: &python
+            - 'cons/**/*.py'
+            - 'tests/**/*.py'
+            - '*.py'
+            src:
+            - *python
+            - '.github/**/*.yml'
+            - 'setup.cfg'
+            - 'requirements.txt'
+            - '.coveragerc'
+            - '.pre-commit-config.yaml'
+
+  style:
+    name: Check code style
+    needs: changes
+    runs-on: ubuntu-latest
+    if: ${{ needs.changes.outputs.changes == 'true' }}
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-python@v2
+      with:
+        python-version: 3.8
+    - uses: pre-commit/[email protected]
+
+  test:
+    needs:
+      - changes
+      - style
+    runs-on: ubuntu-latest
+    if: ${{ needs.changes.outputs.changes == 'true' && needs.style.result == 'success' }}
+    strategy:
+      matrix:
+        python-version:
+          - 3.6
+          - 3.7
+          - 3.8
+          - pypy3
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+    - name: Test with pytest
+      run: |
+        pytest -v tests/ --cov=cons --cov-report=xml:./coverage.xml
+    - name: Coveralls
+      uses: AndreMiras/coveralls-python-action@develop
+      with:
+        parallel: true
+        flag-name: run-${{ matrix.python-version }}
+
+  all-checks:
+    if: ${{ always() }}
+    runs-on: ubuntu-latest
+    name: "All tests"
+    needs: [changes, style, test]
+    steps:
+      - name: Check build matrix status
+        if: ${{ needs.changes.outputs.changes == 'true' && (needs.style.result != 'success' || needs.test.result != 'success') }}
+        run: exit 1
+
+  upload-coverage:
+    name: "Upload coverage"
+    needs: [changes, all-checks]
+    if: ${{ needs.changes.outputs.changes == 'true' && needs.all-checks.result == 'success' }}
+    runs-on: ubuntu-latest
+    steps:
+    - name: Coveralls Finished
+      uses: AndreMiras/coveralls-python-action@develop
+      with:
+        parallel-finished: true