* issues/16:
  Set project version to 0.2.1
  Add documentation for systemd and sysusers.d integration
  Add example for systemd integration
  Add example for sysusers.d integration
  Set default sync dir to /var/lib/arch-release-sync

pyproject.toml:
Raise project version to 0.2.1.

README.rst:
Add documentation on where to find the systemd and sysusers.d
integration and how they relate to one another.

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