Upgrade package tooling, drop Django<3.2, DjangoCMS<3.9 and Python<3.9

.bumpversion.cfg

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+[bumpversion]
+current_version = 0.3.1
+parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(\.?)(?P<release>[a-z]*)(?P<relver>\d*)
+serialize = 
+	{major}.{minor}.{patch}.{release}{relver}
+	{major}.{minor}.{patch}
+commit = True
+tag = False
+sign_tags = True
+tag_name = {new_version}
+message = Release {new_version}
+
+[bumpversion:part:release]
+optional_value = gamma
+values = 
+	dev
+	a
+	b
+	rc
+	gamma
+
+[bumpversion:part:relver]
+first_value = 1
+
+[bumpversion:file:djangocms_multisite/__init__.py]

.github/ISSUE_TEMPLATE/--bug-report.md

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+---
+name: "\U0001F41B Bug report"
+about: Create a report to help us improve
+title: ''
+labels: 'type: bug'
+assignees: ''
+
+---
+
+<!--
+Please fill in each section to help maintainers to be helpful and quick to respond.
+-->
+
+## Description
+
+<!--
+Describe issue in general terms.
+-->
+
+## Steps to reproduce
+
+<!--
+Provide clear steps to reproduce the issue.
+-->
+
+## Versions
+
+<!--
+Provide at least Python, Django and application version.
+-->
+
+## Expected behaviour
+
+<!--
+Provide what you would have expected to happen.
+-->
+
+## Actual behaviour
+
+<!--
+Provide what happened.
+-->
+
+## Additional information
+
+<!--
+Add any other information.
+-->

.github/ISSUE_TEMPLATE/--feature-request.md

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+---
+name: "\U0001F389 Feature request"
+about: Share your idea, let's discuss it!
+title: ''
+labels: 'type: feature'
+assignees: ''
+
+---
+
+<!--
+Please fill in each section to help maintainers to be helpful and quick to respond.
+-->
+
+## Description
+
+<!--
+Describe the feature in general terms.
+-->
+
+## Use cases
+
+<!--
+What use cases these feature will address?
+-->
+
+## Proposed solution
+
+<!--
+A clear and concise description of what you want to happen.
+-->
+
+## Alternatives
+
+<!--
+A clear and concise description of any alternative solutions or features you've considered.
+-->
+
+## Additional information
+
+<!--
+Add any other information.
+-->

.github/workflows/codeql.yml

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+# For most projects, this workflow file will not need changing; you simply need
+# to commit it to your repository.
+#
+# You may wish to alter this file to override the set of languages analyzed,
+# or to provide custom queries or build logic.
+#
+# ******** NOTE ********
+# We have attempted to detect the languages in your repository. Please check
+# the `language` matrix defined below to confirm you have the correct set of
+# supported CodeQL languages.
+#
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ "master" ]
+  schedule:
+    - cron: '37 3 * * 3'
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: 'ubuntu-latest'
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'python' ]
+        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python', 'ruby' ]
+        # Use only 'java' to analyze code written in Java, Kotlin or both
+        # Use only 'javascript' to analyze code written in JavaScript, TypeScript or both
+        # Learn more about CodeQL language support at https://aka.ms/codeql-docs/language-support
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v2
+      with:
+        languages: ${{ matrix.language }}
+        # If you wish to specify custom queries, you can do so here or in a config file.
+        # By default, queries listed here will override any specified in a config file.
+        # Prefix the list here with "+" to use these queries and those in the config file.
+
+        # For more details on CodeQL's query packs, refer to: https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-code-scanning#using-queries-in-ql-packs
+        # queries: security-extended,security-and-quality
+
+
+    # Autobuild attempts to build any compiled languages  (C/C++, C#, Go, or Java).
+    # If this step fails, then you should remove it and run the build manually (see below)
+    - name: Autobuild
+      uses: github/codeql-action/autobuild@v2
+
+    # ℹ️ Command-line programs to run using the OS shell.
+    # 📚 See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
+
+    #   If the Autobuild fails above, remove it and uncomment the following three lines.
+    #   modify them (or add more) to build your code if your project, please refer to the EXAMPLE below for guidance.
+
+    # - run: |
+    #     echo "Run, Build Application using script"
+    #     ./location_of_script_within_repo/buildscript.sh
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v2
+      with:
+        category: "/language:${{matrix.language}}"

.github/workflows/lint.yml

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+name: Code quality
+
+on: [push, pull_request]
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    if: "!contains(github.event.head_commit.message, '[skip ci]')"
+    strategy:
+      matrix:
+        python-version: ["3.11.x"]
+        toxenv: [ruff, isort, black, pypi-description, docs, towncrier]
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        repository: ${{ github.event.pull_request.head.repo.full_name }}
+        ref: ${{ github.event.pull_request.head.ref }}
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Cache pip
+      uses: actions/cache@v3
+      with:
+        path: ~/.cache/pip
+        key: ${{ runner.os }}-pip-${{ matrix.toxenv }}
+        restore-keys: |
+          ${{ runner.os }}-pip-${{ matrix.toxenv }}
+    - name: Cache tox
+      uses: actions/cache@v3
+      with:
+        path: .tox
+        key: ${{ runner.os }}-lint-${{ matrix.toxenv }}-${{ hashFiles('setup.cfg') }}
+        restore-keys: |
+          ${{ runner.os }}-lint-${{ matrix.toxenv }}-
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip setuptools tox>4
+    - name: Test with tox
+      if: ${{ matrix.toxenv != 'towncrier' || (!contains(github.event.head_commit.message, '[pre-commit.ci]') && !contains(github.event.pull_request.body, 'pre-commit.ci start')) }}
+      run: |
+        tox -e${{ matrix.toxenv }}

.github/workflows/logger.yml

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+name: Event Logger
+on: push
+
+jobs:
+  log-github-event-goodies:
+    name: "LOG Everything on GitHub Event"
+    runs-on: ubuntu-latest
+    steps:
+      - name: Logging
+        run: |
+          echo '${{toJSON(github.event)}}'

.github/workflows/publish.yml

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+name: Upload Python Package
+
+on:
+  release:
+    types: [published,prereleased]
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.x'
+    - name: Cache pip
+      uses: actions/cache@v3
+      with:
+        path: ~/.cache/pip
+        key: ${{ runner.os }}-pip-${{ matrix.toxenv }}
+        restore-keys: |
+          ${{ runner.os }}-pip-${{ matrix.toxenv }}
+    - name: Cache tox
+      uses: actions/cache@v3
+      with:
+        path: .tox
+        key: ${{ runner.os }}-tox-release-${{ hashFiles('setup.cfg') }}
+        restore-keys: |
+          ${{ runner.os }}-tox-release-
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip setuptools tox>4
+    - name: Build and publish
+      env:
+        TWINE_USERNAME: __token__
+        TWINE_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
+      run: |
+        tox -erelease

.github/workflows/test.yml

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+name: Tox tests
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    if: "!contains(github.event.head_commit.message, '[skip ci]')"
+    runs-on: ubuntu-latest
+    continue-on-error: ${{ matrix.continue-on-error }}
+    strategy:
+      matrix:
+        python-version: ["3.11", "3.10", "3.9"]
+        django: [42, 41, 32]
+        cms: [311, 39]
+        continue-on-error: [true]
+        exclude:
+          - django: 41
+            cms: 39
+          - django: 42
+            cms: 39
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Cache pip
+      uses: actions/cache@v3
+      with:
+        path: ~/.cache/pip
+        key: ${{ runner.os }}-pip-${{ matrix.toxenv }}
+        restore-keys: |
+          ${{ runner.os }}-pip-${{ matrix.toxenv }}
+    - name: Cache tox
+      uses: actions/cache@v3
+      with:
+        path: .tox
+        key: ${{ runner.os }}-tox-${{ format('{{py{0}-django{1}-cms{2}}}', matrix.python-version, matrix.django, matrix.cms) }}-${{ hashFiles('setup.cfg') }}
+        restore-keys: |
+          ${{ runner.os }}-tox-${{ format('{{py{0}-django{1}-cms{2}}}', matrix.python-version, matrix.django, matrix.cms) }}-
+    - name: Install dependencies
+      run: |
+        sudo apt-get install gettext
+        python -m pip install --upgrade pip setuptools tox>4
+    - name: Test with tox
+      env:
+        TOX_ENV: ${{ format('py-django{1}-cms{2}', matrix.python-version, matrix.django, matrix.cms) }}
+        COMMAND: coverage run
+        COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        COVERALLS_SERVICE_NAME: github
+      run: |
+        tox -e$TOX_ENV
+        .tox/$TOX_ENV/bin/coverage xml
+        .tox/$TOX_ENV/bin/coveralls
+    - uses: codecov/codecov-action@v3
+      with:
+        token: ${{ secrets.CODECOV_TOKEN }}
+        flags: unittests
+        files: ./coverage.xml
+        fail_ci_if_error: false