Merge branch 'release-0.7.3' into 'main'

CHANGELOG.md

FEATURES.md

README_SETUP.md

RELEASE_GUIDELINES.md

setup.py

src/caosdb/apiutils.py

src/caosdb/common/models.py

src/caosdb/configuration.py

src/caosdb/high_level_api.py

src/caosdb/schema-pycaosdb-ini.yml

src/caosdb/utils/plantuml.py

src/doc/conf.py

src/doc/configuration.md

src/doc/future_caosdb.md

src/doc/high_level_api.org

src/doc/high_level_api.rst

src/doc/index.rst

tox.ini

unittests/test_apiutils.py

unittests/test_configs/pycaosdb-IntegrationTests.ini