docs/repod/changelog.rst:
Add info about artwork, its creator and license to changelog.

docs/conf.py:
Add favicon to HTML documentation.

docs/artwork/logo.ico:
Add favicon icon for HTML documentation, derived from SVG artwork.

docs/conf.py:
Add 200x200px project logo to rendered HTML documentation

docs/artwork/logo.png:
Add a 200x200px logo for the HTML documentation, rendered from the
SVG based artwork.

README.md:
Add link to Safi @ http://betriebsbuero.com for the project artwork and
specify its license as CC-BY-SA-4.0.

docs/artwork/repod.svg:
Logo artwork provided by Safi (http://betriebsbuero.com) under the terms
of the CC-BY-SA-4.0.

docs/artwork/LICENSE:
Add CC-BY-SA-4.0 license file for artwork.

tox.ini:
Run bandit in tox linter target.

pyproject.toml:
Add configuration section for bandit.

pdm.lock:
Update lock file after adding bandit.

pyproject.toml:
Add bandit to development dependencies for common security checks.

docs/repod/changelog.rst:
Add changelog entry for adding pydocstyle and improving documentation
for tests.

tox.ini:
Add running pycodestyle to linter tox target.

Change all documentation to align with pydocstyle.
Add missing documentation.
Change code to comply with bandit.
Change code to comply with flake8-return.

pdm.lock:
Update PDM lock file after adding pydocstyle

pyproject.toml:
Add pydocstyle to development dependencies

dbscripts/*:
Remove PoC dbscripts code, as it no longer serves a purpose.

.gitlab-ci.yml:
Remove artifacts after two weeks to conserve space.
Make all jobs interruptible, to not run jobs that would be superseded by
newer ones (in follow-up commits or when force-pushing).

docs/repod/changelog.rst:
Add changelog entry for .SRCINFO parser

docs/repositories/source_repository.rst:
Explain .SRCINFO files in the context of the source repository and add
the JSON schema, which can be used to validate it.

repod/files/__init__.py:
Expose srcinfo components `SrcInfo`, `PkgBaseSection` and
`PkgNameSection` in `repod.files`.
Change `export_schemas()` to also export srcinfo schemas.

repod/files/srcinfo.py:
Add parser for .SRCINFO files.

tests/files/test_srcinfo.py:
Add tests for .SRCINFO file parser components.

tests/conftest.py:
Add fixtures for creating the contents and files using the .SRCINFO file
format.

repod/common/models.py:
Simplify attribute documentation on the common models `PkgBase`,
`PkgName`, `Epoch`, `PkgRel` and `PkgVer`.

repod/common/regex.py:
Add regular expression `PGP_KEY_ID` to match PGP key ID strings.

repod/errors.py:
Add `FileParserError` for errors occuring when parsing files.

repod/common/models.py:
Add a `PkgDesc` model to track package description using a `pkgdesc`
attribute.

repod/common/models.py:
Add `Options`, `PkgBase` and `PkgName` models from `repod.files.buildinfo`.
Change the `Options` model to track an optional `options` attribute, as
also in BUILDINFO files, the options list can be optional.

repod/files/buildinfo.py:
Remove `Options`, `PkgBase` and `PkgName` models and rely on those from
`repod.common.models`.

repod/common/models.py:
Remove unnecessary and unused `vercmp()` and `as_list()` methods from
Epoch, PkgRel and PkgVer.

tests/common/test_models.py:
Remove tests for unused `as_list()` methods.
Adapt `vercmp()` tests to rely on `repod.version.alpm.vercmp`  instead.

repod/common/regex.py:
Add regular expressions to allow matching the data of blake2, crc-32,
sha1, sha224, sha384 and sha512 checksum algorithms.

repod/files/common.py:
Add `read_text_from_file()` to allow reading text from a file and return
it in a StringIO.

tests/files/test_common.py:
Add parametrized tests for `read_text_from_file()`.

docs/repod/man/repod_conf.rst:
Make repod.conf manpage more readable by using subsections for options
and fixing a few typos.

docs/repod/changelog.rst:
Add changelog entry explaining the new repository grouping feature and
its implications.

docs/repod/man/repod_conf.rst:
Add documentation on how the group feature for repositories works to the
`repod.conf` man page.
Add example for two grouped repositories.

repod/action/workflow.py:
Change `add_packages()` to also consider grouped repositories, using
`RepoGroupTask`.
Simplify `add_packages()` by retrieving the target repository once and
using the needed attributes directly instead of retrieving it multiple
times.

tests/action/test_workflow.py:
Change tests for `add_packages()` to also consider cases where
repositories are in a group.

repod/action/task.py:
Add `RepoGroupTask` to gather data (names and management repository
directories) on grouped repositories, as well as pkgbases and packages
of `OutputPackageBase` instances.

tests/action/test_task.py:
Add tests for `RepoGroupTask`.

repod/action/check.py:
Add `UniqueInRepoGroupCheck` to allow checking that lists of pkgbase and
package names are unique in the management repository directories of
repositories (in a group).

tests/action/test_check.py:
Add tests for `UniqueInRepoGroupCheck`.

repod/config/settings.py:
* Add an optional group attribute to PackageRepo, which can be used to
  group PackageRepos together, which effectively implies that pkgbases
  and packages within a group have to be unique.
* Add `PackageRepo.get_all_management_repo_dirs()` to retrieve all
  management repository directories, that a PackageRepo instance uses.
* Add `PackageRepo.get_all_package_repo_dirs()` to allow retrieving all
  package repository directories, that a `PackageRepo` uses.
* Add `Settings.get_repos_by_group()` to retrieve all PackageRepo
  instances of the same group, while allowing to exclude specific
  repositories.
* Add `Settings.check_repository_groups_dirs()` to check that
  repositories in the same group use the same parent directory for their
  management repository directories, the same grandparent directory
  for their package repository directories, the same parent directory
  for their package pool directories and the same parent directory for
  their source pool directories.

tests/config/test_settings.py:
Add tests for `PackageRepo.get_all_management_repo_dirs()`,
`PackageRepo.get_all_package_repo_dirs()`,
`Settings.check_repository_groups_dirs()` and
`Settings.get_repos_by_group()`.