examples/systemd/arch-release-sync.service:
Add an example systemd system service with applied hardening, that
allows synchronization to the default sync location.

examples/systemd/arch-release-sync.timer:
Add and example systemd system timer that triggers running
arch-release-sync.service hourly.

examples/sysusers.d/arch-release-promotion.conf:
Add an example sysusers.d configuration file to create the
arch-release-sync user on a target system.

arch_release_promotion/config.py:
Change PROJECTS_SYNC_DIR to /var/lib/arch-release-sync (as
arch-release-promotion does not reflect the used executable).

* issues/12:
  pyproject.toml: Update project version to 0.2.0
  README: Extend with information on arch-release-sync
  example.toml: Add synchronization related documentation
  Add script entrypoint for arch-release-sync
  cli: Add entrypoint for arch-release-sync
  files: Add ProjectFiles class to handle synchronization
  gitlab: More explicit print when downloading build artifacts
  gitlab: Implement download of promotion artifact
  argparse: Add parser for arch-release-sync
  gitlab: Change signature of constructor
  gitlab: More generically retrieve types of releases
  config: Make PRIVATE_TOKEN optional
  config: Add integration to configure synchronization

pyproject.toml:
Set project version to 0.2.0.
Change project description and extend keywords to reflect the extended
project scope.

README.rst:
Extend with information on arch-release-sync, how to configure it and
how its synchronization behaves.
Add gnupg explicitly to non-language dependencies for the tooling.

examples/example.toml:
Add documentation on the global and per-project `sync_config` table and
their options `backlog`, `directory`, `last_updated_file`,
`temp_in_sync_dir`.

pyproject.toml:
Extend tool.poetry.scripts table to add an entrypoint for
`arch-release-sync`.

arch_release_promotion/cli.py:
Add `arch_release_sync()` as entrypoint for arch-release-sync, using
`files.ProjectFiles.sync()` to synchronize any configured releases for a
given project.

arch_release_promotion/files.py:
Add `load_release_from_json_payload()` to read a JSON payload and return
it as a Release instance.
Add the `ProjectFiles` class to aid in the synchronization of promoted
release types of a project by bundling all necessary functionality.
The special factory method `ProjectFiles.sync()` allows the creation of
a `ProjectFiles` instance and direct synchronization of the configured
amount of release versions of the project.

tests/test_files.py:
Add tests for `load_release_from_json_payload()`.
Add tests for `ProjectFiles` and all of its classmethods and instance
methods.

arch_release_promotion/gitlab.py:
Change `Upstream.download_release()` to also print the name of the
project.

arch_release_promotion/gitlab.py:
Add `download_promotion_artifact()` to allow download of a project
release's promotion artifact to a directory.

tests/test_gitlab.py:
Add tests for `download_promotion_artifact()`.

arch_release_promotion/argparse.py:
Add `ArgParseFactory.synchronize()` classmethod to add a simple
entrypoint for `arch-release-sync`, that supports the `-p`/`--project`
optional parameters and display of version information.

tests/test_argparse.py:
Add tests for `ArgParseFactory.synchronize()`.

arch_release_promotion/gitlab.py:
Change the `Upstream` constructor to accept private_token to be an
optional string.

arch_release_promotion/gitlab.py:
Add `Upstream.get_releases()` to allow retrieval of promoted or
unpromoted releases of an arbitrary upper limit.
Change `Upstream.select_release()` to use `Upstream.get_releases()`.

tests/test_gitlab.py:
Add parametrized test for `Upstream.get_releases()`.

arch_release_promotion/config.py:
Change `Settings.PRIVATE_TOKEN` to become an optional attribute, as it
is not required for readonly scenarios.
Order all `Settings` attributes alphabetically and add documentation for
them and their respective default values.
Change `Settings.validate_private_token()` to reflect the change in type
for `Settings.PRIVATE_TOKEN`.

tests/test_config.py:
Extend tests to also check for cases where `Settings.PRIVATE_TOKEN` is
None.

arch_release_promotion/config.py:
Add a `SyncConfig` pydantic model to track a global or per project
`backlog` (amount of versions synced), `directory` (with which to
synchronize), `last_updated_file` (to which to write a timestamp upon
changes in the synchronization directory) and `temp_in_sync_dir` (a bool
to set whether temporary data is downloaded to the synchronization
directory).
Add an optional instance of SyncConfig to both `ProjectConfig` and
`Projects`.
Add a root_validator to `Projects` to allow overriding the `SyncConfig`
of each project with implicit or global defaults if no `SyncConfig` is
provided.
Add validator for `Projects.projects` to ensure, that all
`ReleaseConfig` names of each `ProjectConfig` instances are unique.

tests/test_config.py:
Extend tests for `Projects` in accordance with changes to models.

* nl6720/gpg-options:
  signature.py: enforce sane gpg options

* Add --batch since gpg is not run manually.
* Add --no-armor to ensure that a .sig file is created instead of .asc in case gpg.conf sets the armor option.
* Add --no-include-key-block to skip including the public key in the signature and force the user who verifies the signature to acquire the public key from elsewhere.

Fixes #15.

* origin/issues/14:
  Increase project version to 0.1.1
  pyproject.toml: Add examples to sdist tarball

pyproject.toml:
Set project version to 0.1.1

pyproject.toml:
Add example files to sdist tarball.

* origin/issues/13:
  Update poetry lock file
  pyproject.toml: Update dependency versions
  pyproject.toml: Add metadata
  .gitignore: Add dist directory

poetry.lock:
Update the poetry lock file by updating all dependencies to their
respective latest versions.

pyproject.toml:
Update python-dotenv, python-gitlab and orjson to their respective
current version.

pyproject.toml:
Add project metadata via `readme`, `homepage`, `repository`,
`documentation`, `keywords`, `classifiers` and additional links in a
`[tool.poetry.urls]` section.

.gitignore:
Add the dist directory to the ignore file.

* origin/issues/10:
  README: Point to example configuration
  Add an example file for projects configuration
  README: Change openmetrics section into configuration subsection
  README: Move "Use" section below "Requirements" section
  README: Update JSON payload section
  README: Fix typo in Configuration section
  README: Add section about promotion artifact
  Fix releng example configuration

README.rst:
Point to the example.toml for documentation purposes.

examples/example.toml:
Add a generic example file for project configuration that explains all
options.

README.rst:
As the openmetrics section is about how to configure openmetrics and
projects.toml to retrieve data from a build, it is best kept as a
subsection of the configuration section.

README.rst:
Move the "Use" section below "Requirements" section, as it was located
between sections that are dealing with configuration.

README.rst:
Update the JSON payload section to reflect the current settings around
metrics and how they are reflected in a JSON payload and update all
respective documentation around the payload's attributes.
Change the JSON payload section to become a subsection of the "Promotion
artifact" section.

README.rst:
Fix a typo in the Configuration section explaining that some of the
configuration options can also be passed in as environment variables.

README.rst:
Add section that explains the common files in a promotion artifact.

examples/projects.toml:
Change the releng example configuration to use all relevant metrics,
created by the releng releases and to create detached signatures for
relevant files per release type.

* origin/issues/4:
  gitlab-ci: Publish to pypi.org on tag

.gitlab-ci.yml:
Add a publish stage, that uses `poetry publish` on a secure runner to
push a release to pypi.org upon tagging. For this we make use of an
access token configured for the project via the environment variable
`POETRY_PYPI_TOKEN_PYPI`.

* origin/issues/5:
  cli: Change default program behavior to iterate over all projects
  argparse: Extend to show version and making project optional
  gitlab: Be explicit during release selection
  Remove hardcoded version string
  config: Raise when there are no project configurations

arch_release_promotion/cli.py:
Add `promote_project_release()` to promote releases of projects
generically. If no `release_version` is provided, user input is
requested to select a release that is not yet promoted.
Change `main()` to rely on `promote_project_release()` by either
promoting a specific release of a project (if the project or the project
and the release version are provided) or iterating over all available
projects in the configuration to allow the user to promote releases for
them.