Replace yargs dependency

[haykam821]

In this comment, you expressed interested in switching from yargs to minimist. Will this still happen? It will cut down on dependency bloat as I explained in that same thread.

[pfgithub]

I think I would rather make full use of yargs to prevent the problem minimist has with values that don't have labels.

scpl --inverse file.scpl -o file.shortcut currently doesn't work because it is being read as file.scpl being for --inverse instead of being its own thing.

Yargs has a surprising number of dependencies though so I might switch away from it still. I'm not sure.