Update version from 0.17.0 to 0.19.0

.devcontainer/Dockerfile

@@ -0,0 +1,37 @@
+FROM ubuntu:20.04
+
+# https://code.visualstudio.com/docs/remote/containers-advanced#_creating-a-nonroot-user
+ARG USERNAME=flwr-vscode
+ARG USER_UID=1000
+ARG USER_GID=$USER_UID
+
+# Create the user
+RUN groupadd --gid $USER_GID $USERNAME \
+    && useradd --uid $USER_UID --gid $USER_GID -m $USERNAME \
+    #
+    # [Optional] Add sudo support. Omit if you don't need to install software after connecting.
+    && apt-get update \
+    && apt-get install -y sudo bash \
+    && echo $USERNAME ALL=\(root\) NOPASSWD:ALL > /etc/sudoers.d/$USERNAME \
+    && chmod 0440 /etc/sudoers.d/$USERNAME
+
+# A persistent volume will be configured in devcontainer.json so we don't loose the commandhistory
+# after rebuilding the container
+RUN SNIPPET="export PROMPT_COMMAND='history -a' && export HISTFILE=/commandhistory/.bash_history" \
+    && mkdir /commandhistory \
+    && touch /commandhistory/.bash_history \
+    && chown -R $USERNAME /commandhistory \
+    && echo $SNIPPET >> "/home/$USERNAME/.bashrc"
+
+# Install system dependencies
+RUN apt update 
+RUN apt install -y curl wget gnupg python3 python-is-python3 python3-pip git \
+    build-essential clang-format tmux vim
+
+RUN python -m pip install \
+    pip==22.0.4 \
+    setuptools==60.9.3 \
+    poetry==1.1.13
+
+USER $USERNAME
+ENV PATH="/home/$USERNAME/.local/bin:${PATH}"

.devcontainer/devcontainer.json

@@ -0,0 +1,17 @@
+{
+  "dockerFile": "Dockerfile",
+  "postCreateCommand": "poetry install --extras \"simulation\"",
+  "extensions": ["ms-python.python"],
+  "settings": {
+    "files.watcherExclude": {},
+    "search.exclude": {},
+    "terminal.integrated.defaultProfile.linux": "bash"
+  },
+  "remoteUser": "flwr-vscode",
+  "containerEnv": {
+    "POETRY_VIRTUALENVS_CREATE": "false"
+  },
+  "mounts": [
+    "source=flwr-bashhistory,target=/commandhistory,type=volume"
+  ]
+}

.editorconfig

@@ -10,8 +10,7 @@ indent_style = space
 indent_size = 2
 
 [*.py]
-indent_style = space
-indent_size = 4
+profile = black
 
 [*.rst]
 indent_style = space

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,51 @@
+name: Bug Report
+description: Create a report to help us reproduce and correct the bug
+labels: ['bug']
+
+body:
+- type: markdown
+  attributes:
+    value: >
+      #### Before submitting a bug, please make sure the issue hasn't been already
+      addressed by searching through [the past issues](https://github.com/adap/flower/issues).
+      Please also go through the Flower Slack channel if a similar behavior is already appeared and a solution is already given. 
+- type: textarea
+  attributes:
+    label: Describe the bug
+    description: >
+      A clear and concise description of what the bug is.
+  validations:
+    required: true
+- type: textarea
+  attributes:
+    label: Steps/Code to Reproduce
+    description: |
+      Please add a minimal code example that can reproduce the error when running it.
+    placeholder: |
+      ```
+      Sample code to reproduce the problem
+      ```
+  validations:
+    required: true
+- type: textarea
+  attributes:
+    label: Expected Results
+    description: >
+      Please paste or describe the expected results.
+    placeholder: >
+      Example: The server aggregated the weights from all clients.
+  validations:
+    required: true
+- type: textarea
+  attributes:
+    label: Actual Results
+    description: |
+      Please paste or describe the results you observe instead of the expected results. If you observe an error, please paste the error message including the **full traceback** of the exception. 
+    placeholder: >
+      Please paste or specifically describe the actual output or traceback.
+  validations:
+    required: true
+- type: markdown
+  attributes:
+    value: >
+      Thanks for contributing!

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,14 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Slack Channel
+    url: https://flower.dev/join-slack
+    about: Connect with other Flower users and contributors and discuss with them or ask them questions.
+  - name: Discussion
+    url: https://github.com/adap/flower/discussions
+    about: Ask about new features or general questions. Please use the discussion area in most of the cases instead of the issues. 
+  - name: Flower Issues
+    url: https://github.com/adap/flower/issues
+    about: Contribute new features/enhancements, report bugs, or improve the documentation.
+  - name: Flower Mail
+    url: https://flower.dev/
+    about: If your project needs professional support please contact the Flower team ([email protected]).

.github/ISSUE_TEMPLATE/doc_improvement.yml

@@ -0,0 +1,21 @@
+name: Improve Documentation
+description: Create an issue/PR to help us improve the documentation. You can use the issue to report an improvement or directly open a PR with the suggested change. 
+labels: ['documentation']
+
+body:
+- type: markdown
+  attributes:
+    value: >
+      #### We are happy that you want to improve the documentation. Please contact us if you are planning to add a new chapter or blog post.
+- type: textarea
+  attributes:
+    label: Describe what the documentation is missing. 
+    description: >
+      Which part of the documentation needs improvement?
+  validations:
+    required: true
+- type: textarea
+  attributes:
+    label: Suggest your improvement.
+    description: >
+      What information do you want to change/add?

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -0,0 +1,22 @@
+name: Feature request
+description: Suggest a new baseline, strategy, example, ...
+labels: ['feature request']
+
+body:
+- type: markdown
+  attributes:
+    value: >
+      #### If you want to propose a new feature, please check the PRs if someone already works on this feature.
+- type: textarea
+  attributes:
+    label: Describe the type of feature and its functionality.
+  validations:
+    required: true
+- type: textarea
+  attributes:
+    label: Describe step by step what files and adjustments are you planning to include.
+  validations:
+    required: true
+- type: textarea
+  attributes:
+    label: Is there something else you want to add?

.github/ISSUE_TEMPLATE/question.yml

@@ -0,0 +1,14 @@
+name: Question
+description: Do you have questions? Please check our Flower Slack channel or the Flower Discussion.
+labels: ['question']
+
+body:
+- type: markdown
+  attributes:
+    value: >
+      #### Please start a discussion in the Flower discussion before submitting an issue https://github.com/adap/flower/discussions. Only submit a question to the issues if you have not received a reply on the Flower Slack channel or within the discussion area.
+- type: textarea
+  attributes:
+    label: What is your question?
+  validations:
+    required: true

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,34 @@
+<!--
+Thanks for contributing a pull request! Please ensure you have taken a look at
+the contribution guidelines: https://github.com/adap/flower/blob/main/CONTRIBUTING.md
+
+Does the changelog need to be updated?
+See: https://github.com/adap/flower/blob/main/doc/source/changelog.rst
+-->
+
+#### Reference Issues/PRs
+
+<!--
+Example: Fixes #1234. See also #3456.
+Please use keywords (e.g., Fixes) to create a link to the issues or pull requests
+you resolved.
+-->
+
+#### What does this implement/fix? Explain your changes.
+
+<!--
+Explain why this PR is needed and what kind of changes have you done.
+Example: the variable rnd was not clear and therefore renamed to fl_round. 
+-->
+
+#### Any other comments?
+
+
+<!--
+Please be aware that it may take some time until we can check this PR. 
+If you have an urgent request or question please use the Flower Slack channel.
+The Slack channel is really active and contributors respond pretty fast. 
+
+We value your contribution and are aware of the time you put into this PR.
+Therefore, thank you for your contribution. 
+-->

.github/workflows/baselines.yml

@@ -1,4 +1,4 @@
-name: Test Baselines
+name: Baselines
 
 on:
   push:
@@ -13,19 +13,19 @@ defaults:
     working-directory: baselines
 
 jobs:
-  test:
-    runs-on: ubuntu-18.04
+  test_baselines:
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
       - name: Set up Python
         uses: actions/setup-python@v2
         with:
-          python-version: 3.8.3
+          python-version: 3.8.12
       - name: Install build tools
         run: |
-          python -m pip install -U pip==21.1.1
-          python -m pip install -U setuptools==56.2.0
-          python -m pip install -U poetry==1.1.6
+          python -m pip install -U pip==22.0.4
+          python -m pip install -U setuptools==60.9.3
+          python -m pip install -U poetry==1.1.13
           poetry config virtualenvs.create false
       - name: Install dependencies
         run: |

.github/workflows/docs.yml

@@ -4,24 +4,52 @@ on:
   push:
     branches:
       - main
+  pull_request:
+    branches:
+      - main
 
 jobs:
+  build_docs:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+      - name: Build docs
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.7.12
+      - name: Install build tools
+        run: |
+          python -m pip install -U pip==22.0.4
+          python -m pip install -U setuptools==60.9.3
+          python -m pip install -U poetry==1.1.13
+          poetry config virtualenvs.create false
+      - name: Install dependencies (mandatory only)
+        run: python -m poetry install --extras "simulation"
+      - name: Build and deploy docs
+        env:
+          AWS_DEFAULT_REGION: ${{ secrets. AWS_DEFAULT_REGION }}
+          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          AWS_SECRET_ACCESS_KEY: ${{ secrets. AWS_SECRET_ACCESS_KEY }}
+        run: ./dev/build-docs.sh
+
   deploy_docs:
-    runs-on: ubuntu-18.04
+    needs: build_docs
+    if: github.ref == 'refs/heads/main'
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
       - name: Deploy docs
         uses: actions/setup-python@v2
         with:
-          python-version: 3.7.9
+          python-version: 3.7.12
       - name: Install build tools
         run: |
-          python -m pip install -U pip==21.1.1
-          python -m pip install -U setuptools==56.2.0
-          python -m pip install -U poetry==1.1.6
+          python -m pip install -U pip==22.0.4
+          python -m pip install -U setuptools==60.9.3
+          python -m pip install -U poetry==1.1.13
           poetry config virtualenvs.create false
       - name: Install dependencies (mandatory only)
-        run: python -m poetry install --extras "baseline examples-tensorflow examples-pytorch http-logger ops"
+        run: python -m poetry install --extras "simulation"
       - name: Build and deploy docs
         env:
           AWS_DEFAULT_REGION: ${{ secrets. AWS_DEFAULT_REGION }}