switch back to ifndef
update code style
code style update
update arvernus to 2.1.4
update Arvernus to 2.1.3, update code style
Update Arvernus to 2.1.2, activate warnings in CMake
Update arvernus to 2.1.1
Remove punctuation at the end of messages.
Add call_name argument to validation functions.
Rename to Maponos
Mostly code organization, QOL and comments.
Make default subcommand mandatory (used at least for default help) Improve spontaneous help
Initial version