Merge branch 'dev' into f-file-read-error

.gitignore

CHANGELOG.md

CMakeLists.txt

Makefile

conanfile.py

doc/README_SETUP.md

doc/capi/index.rst.in

include/caosdb/data_type.h

include/caosdb/entity.h

include/caosdb/message_code.h

include/caosdb/protobuf_helper.h

include/caosdb/status_code.h

include/caosdb/transaction.h

include/caosdb/transaction_status.h

include/caosdb/utility.h

include/caosdb/value.h

include/ccaosdb.h

proto

requirements.txt

src/CMakeLists.txt