2.1

Error responses can now return an array of errors as well as a string.

For example:

{
  "code": 400,
  "status": "Bad Request",
  "message": "error",
  "response": {
    "errorCode": 400,
    "errorMessage": [
      "'name' is required, but was not provided.",
      "'shop_category_id' is required, but was not provided."
    ]
  }
}