2022-10-06: initial release
2022-10-13: added exception handling for ntp request
2022-11-14: made state on no response configurable
2022-11-15: added short (-) options, doesn't work with long (--) options
2023-06-07: moved gui files to ~/local/lib/chek_mk/gui/plugins/...
2024-01-01: modified imports for CMK 2.2.0