Merge branch 'dev'

.gitignore

CHANGELOG.md

CMakeLists.txt

Makefile

README.md

conanfile.txt

test/CMakeLists.txt

test/caosdb_test_utility.h

test/test_ccaosdb.cpp

test/test_connection.cpp

test/test_file_transmission.cpp

test/test_issues.cpp

test/test_list_properties.cpp

test/test_properties.cpp

test/test_transaction.cpp