feat: create initial project structure

.github/ISSUE_TEMPLATE/bug.md

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+---
+name: Bug
+about: Create a bug report to help us improve yamlfix
+labels: bug
+---
+
+## Description
+<!-- A clear and concise description of what the bug is. -->
+
+## Steps to reproduce
+<!-- Steps to reproduce the behavior:
+1. Run ...
+2. ...
+3. ... -->
+
+## Current behavior
+<!-- What happens actually so you think this is a bug. -->
+
+## Desired behavior
+<!--
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+-->
+
+## Environment
+<!--
+make version
+
+# or
+
+python -c "import yamlfix.version; print(yamlfix.version.version_info())"
+-->

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature Request
+about: Suggest a new feature or change to yamlfix
+labels: feature request
+---
+
+## Description
+<!-- A clear and concise description for us to know your idea. -->
+
+## Possible Solution
+<!-- A clear and concise description of what you want to happen. -->
+
+## Additional context
+<!-- Add any other context or screenshots about the feature request here. -->
+
+## Related Issue
+<!-- If applicable, add link to existing issue also help us know better. -->

.github/ISSUE_TEMPLATE/question.md

@@ -0,0 +1,15 @@
+---
+name: Question
+about: Ask a question about how to use yamlfix
+labels: question
+---
+
+<!--
+* [ ] I added a descriptive title to this issue.
+* [ ] I have searched (google, github) for similar issues and couldn't find
+    anything.
+* [ ] I have read and followed [the docs](https://lyz-code.github.io/yamlfix)
+    and couldn't find an answer.
+-->
+
+## Question

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,12 @@
+<!--
+Thank you for sending a pull request!
+Please fill in the following content to let us know better about this change.
+-->
+
+## Description
+<!-- Describe what the change is, try to link it with open issues -->
+
+## Checklist
+
+* [ ] Add test cases to all the changes you introduce
+* [ ] Update the documentation for the changes

.github/SECURITY.md

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+# Security Policy
+
+## Supported Versions
+
+We will endeavour to support:
+
+* The most recent minor release with bug fixes.
+* The latest minor release from the last major version for 6 months after a new
+    major version is released with critical bug fixes.
+* All versions if a security vulnerability is found provided:
+    * Upgrading to a later version is non-trivial.
+    * Sufficient people are using that version to make support worthwhile.
+
+## Reporting a Vulnerability
+
+If you find what you think might be a security vulnerability with
+yamlfix, please do not create an issue on github. Instead please
+email [email protected] I'll reply to your email promptly
+and try to get a patch out ASAP.

.github/dependabot.yml

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+---
+version: 2
+
+updates:
+  - package-ecosystem: pip
+    directory: /
+    schedule:
+      interval: weekly

.github/workflows/build.yml

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+---
+name: Build
+
+on:  # yamllint disable-line rule:truthy
+  push:
+    branches:
+      - master
+
+jobs:
+  PyPI:
+    name: Build and publish Python distributions to PyPI and TestPyPI
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@master
+      - name: Set up Python 3.7
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.7
+      - name: Install PEP517
+        run: >-
+          python -m
+          pip install
+          pep517
+          --user
+      - name: Build a binary wheel and a source tarball
+        run: >-
+          python -m
+          pep517.build
+          --source
+          --binary
+          --out-dir dist/
+          .
+      - name: Publish distribution to Test PyPI
+        uses: pypa/gh-action-pypi-publish@master
+        with:
+          password: ${{ secrets.test_pypi_password }}
+          repository_url: https://test.pypi.org/legacy/
+          skip_existing: true
+      - name: Publish distribution to PyPI
+        if: startsWith(github.ref, 'refs/tags')
+        uses: pypa/gh-action-pypi-publish@master
+        with:
+          password: ${{ secrets.pypi_password }}
+  Documentation:
+    runs-on: ubuntu-18.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          # Number of commits to fetch. 0 indicates all history.
+          # Default: 1
+          fetch-depth: 0
+      - uses: actions/setup-python@v2
+        with:
+          python-version: 3.7
+      - name: Install dependencies
+        run: >-
+          pip install -r ./docs/requirements.txt
+          pip install -e .
+      - name: Build the Documentation
+        run: |
+          mkdocs build
+      - name: Deploy
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          deploy_key: ${{ secrets.ACTIONS_DEPLOY_KEY }}
+          publish_dir: ./site

.github/workflows/tests.yml

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+---
+name: Tests
+
+on:  # yamllint disable-line rule:truthy
+  push:
+    branches:
+      - '*'          # matches every branch that doesn't contain a '/'
+      - '*/*'        # matches every branch containing a single '/'
+      - '**'         # matches every branch
+      - '!gh-pages'  # excludes gh-pages
+
+jobs:
+  Tests:
+    runs-on: ubuntu-latest
+    strategy:
+      max-parallel: 3
+      matrix:
+        python-version: [3.6, 3.7, 3.8]
+
+    steps:
+      - uses: actions/checkout@v1
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v1
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install dependencies
+        run: make install
+      - name: Test linters
+        run: make lint
+      - name: Test type checkers
+        run: make mypy
+      - name: Test security
+        run: make security
+      - name: Test with pytest
+        run: make test
+      - name: Upload Coverage
+        run: |
+          pip3 install coveralls
+          coveralls
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          COVERALLS_FLAG_NAME: ${{ matrix.test-name }}
+          COVERALLS_PARALLEL: true
+      - name: Test documentation
+        run: make build-docs
+  Coveralls:
+    name: Finish Coveralls
+    needs: Pytest
+    runs-on: ubuntu-latest
+    container: python:3-slim
+    steps:
+      - name: Finished
+        run: |
+          pip3 install coveralls
+          coveralls --finish
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  Python_Package:
+    name: Build the Python package
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@master
+      - name: Set up Python 3.7
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.7
+      - name: Install PEP517
+        run: >-
+          python -m
+          pip install
+          pep517
+          --user
+      - name: Build a binary wheel and a source tarball
+        run: >-
+          python -m
+          pep517.build
+          --source
+          --binary
+          --out-dir dist/
+          .