Lighter dependencies?

[fregante]

I noticed that dot-json has relatively large dependencies (the whole underscore) that could be replaced with smaller alternatives.

• sade instead of docopt
• dot-prop instead of underscore-keypath (once Support array index access sindresorhus/dot-prop#71 is solved)

One thing to be aware of is that dot-prop is not equivalent, but the advanced features of underscore-keypath were not documented in dot-json. Either way it would be a breaking change.

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isn't a huge deal but lighter dependencies are always nice.

[maikelvl]

Thanks for submitting this issue. I consider this package in maintenance mode so I'm not planning a rewrite.