Simple sign CLI and interfaces

Simple signing functionality for the command line and library
functions.

Additional dotfiles missing from the template repo are also
added.

.codespellignore

@@ -0,0 +1,3 @@
+# Ignore patterns for the codespell pre-commmit hook.
+
+cips

.codespellrc

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+[codespell]
+skip =
+    *.po,
+    *.ts,
+    tests/*
+count =
+quiet-level = 3
+ignore-words-list =
+    placeholder

.editorconfig

@@ -0,0 +1,21 @@
+# EditorConfig: https://EditorConfig.org. Provides sensible defaults for
+# non vscode editors.
+
+# top-most EditorConfig file
+root = true
+
+# Every file.
+[*]
+charset = "utf8"
+end_of_line = lf
+insert_final_newline = true
+
+indent_style = space
+indent_size = 4
+
+trim_trailing_whitespace = true
+
+# Python. (Duplicates used as placeholders)
+[*.py]
+indent_style = space
+indent_size = 4

.github/workflows/linting.yml

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+---
+name: "linting - all"
+on:
+  pull_request:
+  push:
+    branches:
+      - "main"
+jobs:
+  lint:
+    name: "linting (python)"
+    runs-on: "ubuntu-latest"
+    steps:
+      - name: "Check out repository"
+        uses: "actions/checkout@v2"
+      - name: "Set up Python"
+        uses: "actions/setup-python@v2"
+        with:
+          python-version: "3.10"
+      - name: "install linting tooling"
+        continue-on-error: true
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install -r requirements/local.txt ; pylint **/*.py
+      - name: "run linting via tox"
+        run: |
+          tox -e linting

.github/workflows/unit-tests-all.yml

@@ -0,0 +1,64 @@
+---
+name: "unit tests - all"
+on:
+  pull_request:
+  push:
+    branches:
+      - "main"
+jobs:
+  tox:
+    name: "Python ${{ matrix.python-version }} -- ${{ matrix.os }} "
+    runs-on: ${{ matrix.os }}
+    continue-on-error: ${{ matrix.experimental }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        python-version: ["3.9", "3.10"]
+        experimental: [false]
+        # Include experimental or bleeding-edge releases.
+        # Windows is not included as it can be unreliable, e.g.
+        # psycopg2-binary is only released some time after a Python
+        # major/minor version is formally released.
+        #
+        # Uncomment below (including 'include:') when the next
+        # reasonable test candidate is made available:
+        include:
+          #
+          # Versions list: https://github.com/actions/python-versions/releases
+          # Example formatting: 3.11.0-alpha.1, 3.9.0-beta.8, 3.10.0-rc.3
+          #
+          - os: ubuntu-latest
+            python-version: "3.11.0"
+            experimental: true
+          - os: macos-latest
+            python-version: "3.11.0"
+            experimental: true
+    steps:
+      - name: "check out repository"
+        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: "get pip cache dir"
+        id: "pip-cache"
+        run: |
+          echo "::set-output name=dir::$(pip cache dir)"
+      - name: "cache pip packages"
+        uses: "actions/cache@v2"
+        with:
+          path: "${{ steps.pip-cache.outputs.dir }}"
+          key: "${{ runner.os }}-pip-${{ hashFiles('**/base.txt', '**/local.txt') }}"
+          restore-keys: |
+            ${{ runner.os }}-pip-
+      - name: "install tox"
+        run: |
+          python -m pip install --upgrade pip
+          pip install tox
+      - name: "run tox"
+        env:
+          TOXENV: py3
+        run: |
+          tox

.gitignore

@@ -0,0 +1,141 @@
+# project specific files
+__init__.py
+log.py
+
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+pip-wheel-metadata/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+tar-src/
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# cardano pieces
+*.skey
+*.vkey
+*signed.json
+*.addr
+*.cbor

.markdownlint.yaml

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+# Configurtion file for Markdown lint. Add exceptions here.
+default: true
+
+# Exceptions, example given, MD045
+# MD012: false    # no multiple blank-lines.

.pre-commit-config.yaml

@@ -0,0 +1,46 @@
+repos:
+-   repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.4.0
+    hooks:
+    -   id: check-yaml
+    -   id: check-json
+    -   id: check-toml
+    -   id: end-of-file-fixer
+    -   id: trailing-whitespace
+    -   id: check-case-conflict
+-   repo: https://github.com/psf/black
+    rev: 23.3.0
+    hooks:
+    -   id: black
+- repo: https://github.com/pycqa/isort
+  rev: 5.12.0
+  hooks:
+  - id: isort
+    language_version: python3
+- repo: https://github.com/astral-sh/ruff-pre-commit
+  rev: v0.0.270
+  hooks:
+    - id: ruff
+      args: ["--fix", "--show-fixes"]
+- repo: https://github.com/igorshubovych/markdownlint-cli
+  rev: v0.35.0
+  hooks:
+  - id: markdownlint
+- repo: https://github.com/codespell-project/codespell
+  rev: v2.2.4
+  hooks:
+    - id: codespell
+      args: [-I, .codespellignore]
+- repo: local
+  hooks:
+    - id: pylint
+      name: pylint
+      entry: pylint
+      language: python
+      language_version: python3
+      args:
+        [
+          "-rn", # Only display messages.
+          "-sn", # Don't display the pylint score.
+          "--rcfile=.pylintrc"
+        ]

.pylintrc

@@ -0,0 +1,37 @@
+# Pylint configuration.
+#
+# .pylintrc guide: https://github.com/PyCQA/pylint/blob/cfc393a8dff9ec09bd2fcb25857e772ae04a4991/examples/pylintrc
+#
+
+[MAIN]
+extension-pkg-whitelist=
+    pydantic, # binary module validation, Pydantic/Pylint recommendation.
+
+ignore=
+    LICENSE,
+    .pylintrc,
+
+ignore-patterns=
+    ^(.+).ini$,
+    ^(.+).md$,
+    ^(.+).sh$,
+    ^(.+).service$,
+    ^(.+).json,
+    ^(.+).yml,
+    ^(.+).yaml,
+    ^(.+).toml,
+    ^(.+).html,
+    ^(.+).htm,
+    ^(.+).svg,
+    ^\.,
+
+ignore-paths=
+    requirements/.,
+    tests/fixtures/vcrpy/.,
+    Makefile,
+
+[MESSAGES CONTROL]
+
+disable =
+    C0301, 	# line-length too long, see Black documented recommendations.
+    C0115,  # No docstring for Class.