Version 13.1.1

Description

Trailing and leading quote characters are removed from the values. If I want to pass a 'string' as a value I need to triple-quote it as "''string''" or \'''string\''' when I'm specifying that in the shell.

Expected

> require('yargs-parser')([ '--arg', '"option"' ])
{ _: [], arg: '"option"' }

Actual

> require('yargs-parser')([ '--arg', '"option"' ])
{ _: [], arg: 'option' }

This probably relates to #138, #180. Definitely relates to #145 and #153.
I would suggest introducing a new keepQuotes/trimQuotes option to support the all edge cases.