Correct lint warnings #16
Implement tetengo2::config::temporary_config::clear() #16
Implement test_tetengo2::config::config_base::clear() #16
Implement tetengo2::config::cached_config::clear() #16
Implement tetengo2::config::config_list::clear() #16
Add the registry path prefix to some kinds of group name #16
Implement tetengo2::config::persistent_config::clear() #16
Correct a lint warning #16