Simply parse and drill into JSON on the commandline, with jsonpath and stdin stream support (jq compatible, not a replacement).
Parse text columns, like the output of unix commands. Returns JSON that you can manipulate with tools like jq or underscore-cli.
Convert matching single-quotes to double-quotes: I 'love' unicorns => I "love" unicorns.
Convert matching double-quotes to single-quotes: I "love" unicorns → I 'love' unicorns.