Merge branch 'release-0.13.0'

.gitignore

.gitlab-ci.yml

CHANGELOG.md

Makefile

README.md

README_SETUP.md

RELEASE_GUIDELINES.md

create_slim_linkahead_wrapper.py

examples/pycaosdb_example.py

examples/pylinkahead.ini

examples/server_side_script.py

examples/set_permissions.py

how-to-merge-after-rename.txt

setup.py

src/caosdb/__init__.py

src/caosdb/apiutils.py

src/caosdb/cached.py

src/caosdb/common/__init__.py

src/caosdb/common/administration.py

src/caosdb/common/datatype.py