Bug#854439: also required for npm 5.x and yarnpkg

[Paolo Greppi <paolo.greppi@libpf.com>]

Hi, this ITP has been idle for some time, now this module would also be is also required for npm 5.x and yarnpkg:
https://wiki.debian.org/Javascript/Nodejs/Tasks/npm
https://wiki.debian.org/Javascript/Nodejs/Tasks/yarn

I have seen you have already done some work on version 1.1.2 here:
https://anonscm.debian.org/cgit/pkg-javascript/node-sort-keys.git
but in the meantime upstream has release v 2.0.0

Do you plan to complete this package in the near future ?
Or should I take ownership of the ITP ?

Many thanks, Paolo