Use ruff as linter, code cleanup, add a few features

.github/dependabot.yml

@@ -0,0 +1,18 @@
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: "/"
+    schedule:
+      interval: daily
+  - package-ecosystem: pip
+    directory: "/.github/workflows"
+    schedule:
+      interval: daily
+  - package-ecosystem: pip
+    directory: "/docs"
+    schedule:
+      interval: daily
+  - package-ecosystem: pip
+    directory: "/"
+    schedule:
+      interval: daily

.github/labels.yml

@@ -0,0 +1,66 @@
+---
+# Labels names are important as they are used by Release Drafter to decide
+# regarding where to record them in changelog or if to skip them.
+#
+# The repository labels will be automatically configured using this file and
+# the GitHub Action https://github.com/marketplace/actions/github-labeler.
+- name: breaking
+  description: Breaking Changes
+  color: bfd4f2
+- name: bug
+  description: Something isn't working
+  color: d73a4a
+- name: build
+  description: Build System and Dependencies
+  color: bfdadc
+- name: ci
+  description: Continuous Integration
+  color: 4a97d6
+- name: dependencies
+  description: Pull requests that update a dependency file
+  color: 0366d6
+- name: documentation
+  description: Improvements or additions to documentation
+  color: 0075ca
+- name: duplicate
+  description: This issue or pull request already exists
+  color: cfd3d7
+- name: enhancement
+  description: New feature or request
+  color: a2eeef
+- name: github_actions
+  description: Pull requests that update Github_actions code
+  color: "000000"
+- name: good first issue
+  description: Good for newcomers
+  color: 7057ff
+- name: help wanted
+  description: Extra attention is needed
+  color: 008672
+- name: invalid
+  description: This doesn't seem right
+  color: e4e669
+- name: performance
+  description: Performance
+  color: "016175"
+- name: python
+  description: Pull requests that update Python code
+  color: 2b67c6
+- name: question
+  description: Further information is requested
+  color: d876e3
+- name: refactoring
+  description: Refactoring
+  color: ef67c4
+- name: removal
+  description: Removals and Deprecations
+  color: 9ae7ea
+- name: style
+  description: Style
+  color: c120e5
+- name: testing
+  description: Testing
+  color: b1fc6f
+- name: wontfix
+  description: This will not be worked on
+  color: ffffff

.github/release-drafter.yml

@@ -0,0 +1,29 @@
+categories:
+  - title: ":boom: Breaking Changes"
+    label: "breaking"
+  - title: ":rocket: Features"
+    label: "enhancement"
+  - title: ":fire: Removals and Deprecations"
+    label: "removal"
+  - title: ":beetle: Fixes"
+    label: "bug"
+  - title: ":racehorse: Performance"
+    label: "performance"
+  - title: ":rotating_light: Testing"
+    label: "testing"
+  - title: ":construction_worker: Continuous Integration"
+    label: "ci"
+  - title: ":books: Documentation"
+    label: "documentation"
+  - title: ":hammer: Refactoring"
+    label: "refactoring"
+  - title: ":lipstick: Style"
+    label: "style"
+  - title: ":package: Dependencies"
+    labels:
+      - "dependencies"
+      - "build"
+template: |
+  ## Changes
+
+  $CHANGES

.github/workflows/constraints.txt

@@ -0,0 +1,5 @@
+pip==21.1.3
+nox==2021.6.12
+nox-poetry==0.8.6
+poetry==1.1.7
+virtualenv==20.6.0

.github/workflows/labeler.yml

@@ -0,0 +1,19 @@
+name: Labeler
+
+on:
+  push:
+    branches:
+      - main
+      - master
+
+jobs:
+  labeler:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out the repository
+        uses: actions/[email protected]
+
+      - name: Run Labeler
+        uses: crazy-max/[email protected]
+        with:
+          skip-delete: true

.github/workflows/release.yml

@@ -0,0 +1,79 @@
+name: Release
+
+on:
+  push:
+    branches:
+      - main
+      - master
+
+jobs:
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out the repository
+        uses: actions/[email protected]
+        with:
+          fetch-depth: 2
+
+      - name: Set up Python
+        uses: actions/[email protected]
+        with:
+          python-version: "3.9"
+
+      - name: Upgrade pip
+        run: |
+          pip install --constraint=.github/workflows/constraints.txt pip
+          pip --version
+
+      - name: Install Poetry
+        run: |
+          pip install --constraint=.github/workflows/constraints.txt poetry
+          poetry --version
+
+      - name: Check if there is a parent commit
+        id: check-parent-commit
+        run: |
+          echo "::set-output name=sha::$(git rev-parse --verify --quiet HEAD^)"
+
+      - name: Detect and tag new version
+        id: check-version
+        if: steps.check-parent-commit.outputs.sha
+        uses: salsify/[email protected]
+        with:
+          version-command: |
+            bash -o pipefail -c "poetry version | awk '{ print \$2 }'"
+
+      - name: Bump version for developmental release
+        if: "! steps.check-version.outputs.tag"
+        run: |
+          poetry version patch &&
+          version=$(poetry version | awk '{ print $2 }') &&
+          poetry version $version.dev.$(date +%s)
+
+      - name: Build package
+        run: |
+          poetry build --ansi
+
+      - name: Publish package on PyPI
+        if: steps.check-version.outputs.tag
+        uses: pypa/[email protected]
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_TOKEN }}
+
+      - name: Publish package on TestPyPI
+        if: "! steps.check-version.outputs.tag"
+        uses: pypa/[email protected]
+        with:
+          user: __token__
+          password: ${{ secrets.TEST_PYPI_TOKEN }}
+          repository_url: https://test.pypi.org/legacy/
+
+      - name: Publish the release notes
+        uses: release-drafter/[email protected]
+        with:
+          publish: ${{ steps.check-version.outputs.tag != '' }}
+          tag: ${{ steps.check-version.outputs.tag }}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/tests.yml

@@ -0,0 +1,141 @@
+name: Tests
+
+on:
+  - push
+  - pull_request
+
+jobs:
+  tests:
+    name: ${{ matrix.session }} ${{ matrix.python-version }} / ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - { python-version: 3.9, os: ubuntu-latest, session: "pre-commit" }
+          - { python-version: 3.9, os: ubuntu-latest, session: "safety" }
+          - { python-version: 3.9, os: ubuntu-latest, session: "mypy" }
+          - { python-version: 3.8, os: ubuntu-latest, session: "mypy" }
+          - { python-version: 3.7, os: ubuntu-latest, session: "mypy" }
+          - { python-version: 3.6, os: ubuntu-latest, session: "mypy" }
+          - { python-version: 3.9, os: ubuntu-latest, session: "tests" }
+          - { python-version: 3.8, os: ubuntu-latest, session: "tests" }
+          - { python-version: 3.7, os: ubuntu-latest, session: "tests" }
+          - { python-version: 3.6, os: ubuntu-latest, session: "tests" }
+          - { python-version: 3.9, os: windows-latest, session: "tests" }
+          - { python-version: 3.9, os: macos-latest, session: "tests" }
+          - { python-version: 3.9, os: ubuntu-latest, session: "typeguard" }
+          - { python-version: 3.9, os: ubuntu-latest, session: "xdoctest" }
+          - { python-version: 3.9, os: ubuntu-latest, session: "docs-build" }
+
+    env:
+      NOXSESSION: ${{ matrix.session }}
+
+    steps:
+      - name: Check out the repository
+        uses: actions/[email protected]
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/[email protected]
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Upgrade pip
+        run: |
+          pip install --constraint=.github/workflows/constraints.txt pip
+          pip --version
+
+      - name: Install Poetry
+        run: |
+          pip install --constraint=.github/workflows/constraints.txt poetry
+          poetry --version
+
+      - name: Install Nox
+        run: |
+          pip install --constraint=.github/workflows/constraints.txt nox nox-poetry
+          nox --version
+
+      - name: Compute pre-commit cache key
+        if: matrix.session == 'pre-commit'
+        id: pre-commit-cache
+        shell: python
+        run: |
+          import hashlib
+          import sys
+
+          python = "py{}.{}".format(*sys.version_info[:2])
+          payload = sys.version.encode() + sys.executable.encode()
+          digest = hashlib.sha256(payload).hexdigest()
+          result = "${{ runner.os }}-{}-{}-pre-commit".format(python, digest[:8])
+
+          print("::set-output name=result::{}".format(result))
+
+      - name: Restore pre-commit cache
+        uses: actions/[email protected]
+        if: matrix.session == 'pre-commit'
+        with:
+          path: ~/.cache/pre-commit
+          key: ${{ steps.pre-commit-cache.outputs.result }}-${{ hashFiles('.pre-commit-config.yaml') }}
+          restore-keys: |
+            ${{ steps.pre-commit-cache.outputs.result }}-
+
+      - name: Run Nox
+        run: |
+          nox --force-color --python=${{ matrix.python-version }}
+
+      - name: Upload coverage data
+        if: always() && matrix.session == 'tests'
+        uses: "actions/[email protected]"
+        with:
+          name: coverage-data
+          path: ".coverage.*"
+
+      - name: Upload documentation
+        if: matrix.session == 'docs-build'
+        uses: actions/[email protected]
+        with:
+          name: docs
+          path: docs/_build
+
+  coverage:
+    runs-on: ubuntu-latest
+    needs: tests
+    steps:
+      - name: Check out the repository
+        uses: actions/[email protected]
+
+      - name: Set up Python 3.9
+        uses: actions/[email protected]
+        with:
+          python-version: 3.9
+
+      - name: Upgrade pip
+        run: |
+          pip install --constraint=.github/workflows/constraints.txt pip
+          pip --version
+
+      - name: Install Poetry
+        run: |
+          pip install --constraint=.github/workflows/constraints.txt poetry
+          poetry --version
+
+      - name: Install Nox
+        run: |
+          pip install --constraint=.github/workflows/constraints.txt nox nox-poetry
+          nox --version
+
+      - name: Download coverage data
+        uses: actions/[email protected]
+        with:
+          name: coverage-data
+
+      - name: Combine coverage data and display human readable report
+        run: |
+          nox --force-color --session=coverage
+
+      - name: Create coverage report
+        run: |
+          nox --force-color --session=coverage -- xml
+
+      - name: Upload coverage report
+        uses: codecov/[email protected]