Add package.json enhancements

[jameschensmith]

Removes empty dependencies key & adds funding link.

Relates to #225.

[o-alexandrov]

Btw, you could also add:

  "support": {
    "backing": "npm-funding"
  },

[jameschensmith]

@o-alexandrov, I can't find any documentation for support or anything the object contains in the npm package.json documentation. So I left it out in the initial commits. If you can link the proper documentation for that key, I'll get right to adding it to this PR 😊 👍