[Suggestion] Split library and CLI packages to reduce dependencies

[ypresto]

This package has so many dependencies than what it does.

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Most of them are yargs dependencies. As it is not necessary for server / browser app development, I suggest to split into library and CLI packages.

Thanks! :)

[emerleite]

@ypresto for sure. I'll work on this.

[hpurmann]

Hey @emerleite! Any news on this? You need help with the split? Oh and would you likely accept pull requests for updating the dependencies and changing the travis node version build matrix? Most of them are pretty outdated from today's point of view ;)

[emerleite]

Hi @hpurmann. Feel free to contribute as you need. Not working on this and not my priority right now, but contributions are welcome.