Typescript definitions

[t1u1]

Hi and thanks for making this library!

Would be great if the library provided typescript definitions for the API.

[t1u1]

Here's the simplest $types.d.ts that I came up with:

declare module 'mathup' {
  export function mathup(input: string, options: {});

  export default mathup;
}

and it works for my case, but it should probably be expanded more.

[runarberg]

Fixed in #122

[runarberg]

Released in v1.0.0-rc.3