centralized handling of global flags

[timoxley]

I want to be able to define a few flags that work no matter what command is used. It's possible to define them as .global, but there doesn't appear to be a way to have the argument handled globally.

use case: I want to add a --printConfig flag which pretty-prints the current configuration being used, for whatever command is being run, then process.exits without actually running the command.

[bcoe]

@timoxley this sounds like it would be addressed by having a default command handler? something which we've talked about.

[timoxley]

@bcoe thanks