Add CI using Github actions

.github/workflows/main.yaml

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+name: Github CI
+
+on:
+  pull_request:
+    branches:
+      - '**'
+  push:
+    branches:
+      - master
+
+jobs:
+  linter:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+
+    - name: Set up Python 3.8
+      uses: actions/setup-python@v1
+      with:
+        python-version: 3.8
+
+    - name: Cache dependencies
+      uses: actions/cache@v1
+      with:
+        path: ~/.cache/pypoetry
+        key: ${{ runner.os }}-pip-${{ hashFiles('**/poetry.lock') }}
+
+    - name: Install Python dependencies
+      run: |
+        make dependencies
+
+    - name: Lint with pylint
+      run: |
+        make lint
+
+  setup:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+
+      - name: Set up Python 3.8
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.8
+
+      - name: Cache dependencies
+        uses: actions/cache@v1
+        with:
+          path: ~/.cache/pypoetry
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/poetry.lock') }}
+
+      - name: Install Python dependencies
+        run: |
+          make dependencies
+
+      - name: Build the package
+        run: |
+          poetry build
+
+  unit:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v1
+
+      - name: Set up Python 3.8
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.8
+
+      - name: Install Python dependencies
+        run: |
+          make dependencies
+
+      - name: Prepare coverage
+        run: |
+          curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./cc-test-reporter
+          chmod +x ./cc-test-reporter
+          ./cc-test-reporter before-build
+
+      - name: Unit test with nose test suite
+        run: |
+          make unit
+        env:
+          LOG_LEVEL: ERROR
+
+      - name: Report coverage
+        run: |
+          poetry run coverage xml
+          GIT_COMMIT_SHA=`[[ -z "$GITHUB_HEAD_REF" ]] && echo $GITHUB_SHA || echo ${{ github.event.pull_request.head.sha }}`  GIT_BRANCH=`[[ -z "$GITHUB_HEAD_REF" ]] && echo ${GITHUB_REF/refs\/heads\/} || echo $GITHUB_HEAD_REF` ./cc-test-reporter after-build -t coverage.py --exit-code $?
+        env:
+          CC_TEST_REPORTER_ID: ${{ secrets.CC_TEST_REPORTER_ID }}

.github/workflows/publish.yaml

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+name: Publish Package
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Set up Python 3.8
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.8
+      - name: Setup Environment
+        run: |
+          make setup
+      - name: Build & Release package
+        run: |
+          make publish
+        env:
+          PYPI_PASSWORD: ${{ secrets.PYPI_PASSWORD }}

.github/workflows/release.yaml

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+name: Tag & Release Package
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Set up Python 3.8
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.8
+      - name: Setup Environment
+        run: |
+          make setup
+        env:
+          PYPI_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
+      - name: Detect version upgrade
+        id: versioning
+        run: |
+          package_version=$(echo $(poetry version -v) | sed "s/django-cloud-tasks //")
+          echo "::set-output name=package_version::"$package_version
+          upgraded=$(git tag --list | grep -q "${package_version}$" && echo "false" || echo "true")
+          echo "::set-output name=upgraded::"$upgraded
+          pre_release=$([[ $package_version =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]] && echo "false" || echo "true")
+          echo "::set-output name=pre_release::"$pre_release
+      - name: Create Release
+        if: ${{ steps.versioning.outputs.upgraded == 'true' }}
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ steps.versioning.outputs.package_version }}
+          release_name: Release ${{ steps.versioning.outputs.package_version }}
+          body: |
+            Auto-released by bot.
+            See commit changes.
+          draft: false
+          prerelease: ${{ steps.versioning.outputs.pre_release }}
+      - name: Build & Release package
+        if: ${{ steps.versioning.outputs.upgraded == 'true' }}
+        run: |
+          make publish
+        env:
+          PYPI_PASSWORD: ${{ secrets.PYPI_PASSWORD }}

.github/workflows/updater.yaml

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+on:
+  schedule:
+    - cron:  '0 0 * * 1'  # every monday at 00:00
+
+name: Update packages
+jobs:
+  release:
+    name: Update dependencies
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python 3.8
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.8
+      - name: Install Python dependencies
+        run: |
+          make dependencies
+        env:
+          PYPI_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
+      - name: Update dependencies
+        run: |
+          make update
+          poetry version patch
+        env:
+          PYPI_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
+      - name: Create Pull Request
+        id: cpr
+        uses: peter-evans/create-pull-request@v2
+        with:
+          token: ${{ secrets.PAT }}
+          base: master
+          branch: feature/auto-update
+          commit-message: Updated dependencies
+          title: 'Dependency Update'
+          body: |
+            All dependencies have been update by the Github Action bot.
+          labels: dependencies
+          team-reviewers: developers
+          draft: false
+          request-to-parent: false
+      - name: Check outputs
+        run: |
+          echo "Pull Request Number - ${{ env.PULL_REQUEST_NUMBER }}"
+          echo "Pull Request Number - ${{ steps.cpr.outputs.pull-request-number }}"