Upgrade type definitions for @types/natural

[marcoklein]

I see that the type definitions at https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/types/natural/index.d.ts are for version 2.1.

Are there plans on upgrading them to 3.0.1?

For example I am unable to import the HammingDistance with this version mismatch:

  "dependencies": {
    "natural": "^3.0.1"
  },
  "devDependencies": {
    "@types/natural": "^2.1.1"
  }

[Hugo-ter-Doest]

I was not aware of this typescript version of natural's interface. I think you should ask the authors of that file. Of course, I can help if they have questions about the new index.js and the index files of the modules.

[Brian-McBride]

The way @types works is that pretty much anyone can create PRs there.

Ideally, however, this repo should grab that index.d.ts and drop it into this project and update the types here. Basically, please support typescript :)

[Hugo-ter-Doest]

TypeScript type definitions are now part of natural. See #659