yarn or npm

[kewisch]

It seems the package kind of work with npm and yarn. I believe we switched to yarn when it was new and did better dependency locking. I think we could switch back to npm with package-lock committed now.

@mschroeder thoughts?

[mschroeder]

You are right, there is no reason demanding to use yarn. I still prefer yarn, but it is your call. 😉

[kewisch]

#498