Merge branch 'release-0.15.0' into 'main'

.gitlab-ci.yml

CHANGELOG.md

CITATION.cff

Makefile

examples/pylinkahead.ini

examples/pylinkahead_example.py

setup.cfg

setup.py

src/doc/conf.py

src/doc/configuration.md

src/doc/high_level_api.rst

src/linkahead/__init__.py

src/linkahead/apiutils.py

src/linkahead/cached.py

src/linkahead/common/administration.py

src/linkahead/common/datatype.py

src/linkahead/common/models.py

src/linkahead/common/state.py

src/linkahead/common/timezone.py

src/linkahead/common/versioning.py