The short hand help flag '-h' doesnt work if strict is set to `false`

[jasonrpoteet]

When extending the BaseCommand and setting strict = false the CLI is not recognizing -h the same way it recognizes the --help flag.

Issues seems to be in the method at https://github.com/oclif/command/blob/master/src/command.ts#L203 where its only accounting for --help.