Initial draft GitHub actions being added.

.github/dependabot.yml

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+# https://help.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+  - package-ecosystem: 'pip'
+    directory: '/'
+    schedule:
+      interval: 'weekly'
+      day: 'saturday'
+    allow:
+      - dependency-type: 'all'
+    versioning-strategy: 'auto'
+    labels: [ 'dependencies' ]
+    commit-message:
+      ## prefix maximum string length of 15
+      prefix: 'poetry'
+      include: 'scope'
+    open-pull-requests-limit: 999
+  - package-ecosystem: 'github-actions'
+    directory: '/'
+    schedule:
+      interval: 'weekly'
+      day: 'saturday'
+    labels: [ 'dependencies' ]
+    commit-message:
+      ## prefix maximum string length of 15
+      prefix: 'gh-actions'
+      include: 'scope'
+    open-pull-requests-limit: 999

.github/workflows/poetry.yml

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+# For details of what checks are run for PRs please refer below
+# docs: https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions
+name: Python CI
+
+on:
+  push:
+    branches: ["master"]
+  pull_request:
+  workflow_dispatch:
+  schedule:
+    # schedule weekly tests, since dependencies are not intended to be pinned
+    # this means: at 23:42 on Fridays
+    - cron: '42 23 * * 5'
+
+env:
+  REPORTS_DIR: CI_reports
+
+jobs:
+  build-and-test:
+    name: Build & Test (Python ${{ matrix.python-version }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version:
+          - "3.9" # highest and lowest supported
+    timeout-minutes: 30
+    steps:
+      - name: Checkout
+        # see https://github.com/actions/checkout
+        uses: actions/checkout@v2
+      - name: Create reports directory
+        run: mkdir ${{ env.REPORTS_DIR }}
+      - name: Setup Python Environment
+        # see https://github.com/actions/setup-python
+        uses: actions/setup-python@v2
+        with:
+          python-version: {{ matrix.python-version }}
+          architecture: 'x64'
+      - name: Install poetry
+        # see https://github.com/marketplace/actions/setup-poetry
+        uses: Gr1N/setup-poetry@v7
+        with:
+          poetry-version: 1.1.8
+      - name: Install dependencies
+        run: poetry install
+      - name: Ensure build successful
+        run: poetry build
+      - name: Run tox
+        run: tox
+      - name: Generate coverage reports
+        run: >
+          coverage report && coverage xml -o ${{ env.REPORTS_DIR }}/coverage.xml &&
+          coverage html -d ${{ env.REPORTS_DIR }}
+      - name: Artifact reports
+        if: ${{ ! cancelled() }}
+        # see https://github.com/actions/upload-artifact
+        uses: actions/upload-artifact@v2
+        with:
+          name: ${{ env.REPORTS_ARTIFACT }}
+          path: ${{ env.REPORTS_DIR }}
+          if-no-files-found: error