Merge pull request #3 from KjellKod/master

recursive delete of folder content
Merge pull request #4 from KjellKod/master

one character (mac fumbling)
Merge pull request #5 from KjellKod/master

System test that cannot run should not produce failures. Only warnings.
read as root functionality:
added unit test runner
raii compliant
unit test for as root read test
safety check in test
Merge pull request #6 from rkophs/readAsRoot

Read as root
Merge remote-tracking branch 'main/master'