feat: add support for package-lock.json

[noreiller]

No description provided.

[coveralls]

Coverage increased (+0.01%) to 99.515% when pulling fd7b813 on noreiller:feat/package-lock into 4b6d6db on conventional-changelog:master.

[stevemao]

We have a bunch of write...Json()s. Should probably abstract them into a function sometime.

[noreiller]

I wanted to do so, but I had a doubt about this.

Edit: If this is needed, I suggest a function named writeJsonConfig = (fileName, version, option) => {}

[stevemao]

@noreiller oops I merged this. Feel free to refactor the code and send a PR :)

[Tmarty]

I'd love to test this change. Will it soon be available in standard-version@next or should I build and use standard-version from source?

[bcoe]

@Tmarty @noreiller please give 4.2.0 a try \o/ adds a lot of cool features and would love people to take it for a spin.

[Tmarty]

@bcoe @noreiller this works like a charm in 4.2.0 🎉

[noreiller]

Hi, the last version works great, thanks!