CreateFetch optional query param types incorrect

[ricky-bok-privitar]

Hi,

Thanks so much for maintaining this library! I've a question, given some optional parameters in the query, the types in the parameters seem to be incorrect:

Given the following types:

createX: {
    parameters: {
      query: {
        includeTags?: true | false;
      };      

When we try to create the fetch command, we are forced to include the parameters, but with no option to turn it off:

fetcher
    .path('/api/v1/x')
    .method('post')     
    .create({
      includeTags: true, // The type is true | 1, when it should be a boolean
    })

Is this an issue, or am I not using this correctly? Thanks for your input!