Merge branch 'master' into config
Create tetengo2::config::config_base::clear() #16
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
Create tetengo2_detail/.gitignore not to ignore config.h #16
Create tetengo2::detail::unixos::config #16
Implement tetengo2::detail::unixos::config::set #16
Implement tetengo2::detail::unixos::config::get #16
Correct lint warnings #16
Implement test_tetengo2::config::persistent_config #16
Implement test_tetengo2::config::persistent_config #16
Correct unit test failures on Cygwin #16
Remove the unnecessary blank line in the setting file when the configuration is empty #16
Correct lint warnings #16