fromAPI issue

[whusterj]

This was reported internally on the ThinkNimble slack some time ago:

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I ran into an issue with the TN models that Pari just helped me to solve. Just wanted to alert you, in case that means the code needs to be changed.

I was calling the List method, but it was conking out when mapping the results through FromAPI. I looked in the repo, and the code was

static fromAPI(json = {}) {
    return new this(objectToCamelCase(json))
  }

when we changed it to

static fromAPI(json = {}) {
    return new User(objectToCamelCase(json))
  }

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This should be investigated - this in the static fromAPI method provided by tn-models should refer to the enclosing class, but for some reason was not in this case.