chrore(trestle): Repo initialisation (#1)

Migrating project from internal IBM github.

.github/ISSUE_TEMPLATE/proposed_change.md

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+___
+
+## Instructions: REMOVE before creating issue
+
+- Use this issue template to guide creation of issues. It is not required that all of the fields are filled our or used.
+
+___
+
+## Issue description / feature objectives
+
+## Completion Criteria
+
+## Expected Behavior
+
+## Actual Behavior
+
+## Steps to Reproduce the Problem
+
+1. 
+1. 
+1. 
+
+## Specifications
+
+- Version / branch:
+- Platform:
+- Subsystem:

.github/PULL_REQUEST_TEMPLATE.md

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+## Types of changes
+
+<!--- What types of changes does your code introduce? Put an `x` in all the boxes that apply: -->
+
+- \[ \] Bug fix (non-breaking change which fixes an issue)
+- \[ \] New feature (non-breaking change which adds functionality)
+- \[ \] Breaking change (fix or feature that would cause existing functionality to change)
+- \[ \] My code follows the code style of this project.
+- \[ \] My change requires a change to the documentation.
+- \[ \] I have updated the documentation accordingly.
+- \[ \] I have added tests to cover my changes.
+- \[ \] All new and existing tests passed.
+
+## Pull requests instructions
+
+Please, go through these steps before you submit a PR.
+
+1. Make sure that your PR is not a duplicate.
+
+1. If not, then make sure that:
+
+   a. You have done your changes in a separate branch. Branches MUST have descriptive names that start with either the `fix/` or `feature/` prefixes. Good examples are: `fix/signin-issue` or `feature/issue-templates`.
+
+   b. You have a descriptive commit message with a short title (first line).
+
+   c. Please make sure that your branch passes tests before
+
+1. **After** these steps, you're ready to open a pull request.
+
+   a. Your pull request MUST NOT target the `master` branch on this repository. You probably want to target `develop` instead.
+
+   b. Give a descriptive title to your PR.
+
+   c. Provide a description of your changes.
+
+   d. Put `closes #XXXX` in your comment to auto-close the issue that your PR fixes (if such).
+
+   e Link all other issues which the PR refers to if not closing an issue. At least one issue MUST be linked or close for a PR to be accepted.
+
+**PLEASE REMOVE THESE INSTRUCTIONS BEFORE SUBMITTING**

.github/workflows/python-test.yml

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+# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
+# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
+name: Trestle CI
+
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [ 3.7, 3.8]
+
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        submodules: true
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install build tools
+      run: |
+        make develop
+    - name: Install dependencies
+      run: |
+        make install
+    - name: Run code formatting (yapf)
+      run: |
+        make code-format
+    - name: Run code linting (flake8)
+      run: |
+        make code-lint
+    - name: Pytest
+      run: |
+        make test
+    - name: Push code-cov
+      uses: codecov/codecov-action@v1
+      with: 
+        token: ${{ secrets.CODECOV_TOKEN }}
+        file: ./coverage.xml
+  deploy:
+    runs-on: ubuntu-latest
+    needs: build
+    if: github.ref == 'refs/heads/master'
+    steps:
+      - name: Create release
+        shell: bash
+        env:
+          PYPI_TOKEN: ${{ secrets.PYPI_TOKEN }}
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          make release

.gitignore

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+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+# Messy merges
+*.orig
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+venv
+*.egg-info
+.vscode/settings.json
+
+_*/
+
+#OS X 
+.DS_Store

.gitmodules

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+[submodule "nist-source"]
+	path = nist-source
+	url = https://github.com/usnistgov/OSCAL.git

.pre-commit-config.yaml

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+repos:
+-   repo: https://github.com/pre-commit/mirrors-yapf
+    rev: v0.30.0
+    hooks:
+    -   id: yapf
+        args: [--in-place, --parallel, --recursive, --style, .yapf-config]
+        files: "^(trestle|test)"
+        exclude: "oscal"
+        stages: [commit]
+-   repo: https://gitlab.com/pycqa/flake8
+    rev: 3.8.3
+    hooks:
+    -   id: flake8
+        args: [
+          --extend-ignore,
+          "P1,C812,C813,C814,C815,C816,W503"
+        ]
+        additional_dependencies: [
+          flake8-2020,
+          flake8-broken-line,
+          flake8-bugbear,
+          flake8-builtins,
+          flake8-commas,
+          flake8-comprehensions,
+          flake8-docstrings,
+          flake8-eradicate,
+          flake8-import-order,
+          flake8-mutable,
+          flake8-pep3101,
+          flake8-print,
+          flake8-quotes,
+          flake8-string-format,
+          flake8-use-fstring,
+          pep8-naming
+        ]
+        files: "^(trestle|test)"
+        exclude: "oscal"
+        stages: [commit]
+- repo: https://github.com/hukkinj1/mdformat
+  rev: 0.1.1  # Use the ref you want to point at
+  hooks:
+  - id: mdformat

.yapf-config

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+[style]
+based_on_style = facebook
+align_closing_bracket_with_visual_indent = true
+allow_split_before_dict_value = false
+blank_line_before_nested_class_or_def = true
+column_limit = 120
+indent_dictionary_value = false
+split_all_top_level_comma_separated_values = true
+split_arguments_when_comma_terminated = true
+split_before_arithmetic_operator = true
+split_before_expression_after_opening_paren = true
+split_before_first_argument = true
+split_before_logical_operator = true
+split_complex_comprehension = true