Merge pull request #24 from joobisb/issues#13

feat: add a field on command to deprecate

Fix overwrite by SetDefault for options that share Value (#23)

Make unknown subcommand a sentinel error

Will help consumers avoid duplicating the error output. Also, why
the hell did I write the code this way in the first place?

Merge pull request #9 from coder/f0ssel/data-race-enum

fix: prevent data race on enum choices

Merge pull request #8 from coder/f0ssel/enum-yaml

Add help example image

Fix double error-handle on unknown subcommand

Add license

ci: disable lint

Add default help handler