title: Decimal type in Loopback
body: <p>How do you define a decimal(10,2) in Loopback? I've looked around the api and examples and I cannot get it to work. It just keeps creating a decimal(10,0). columnName does affect the output but precision and scale are not set. I've also tried "precision" instead of "dataPrecision"; still no luck.</p>
  
  <pre><code>"Amount": {
    "type": "Number",
    "required": true,
    "dataPrecision": 8,
    "dataScale": 2
    "mysql": {
      "columnName": "Amount",
      "dataType": "DECIMAL",
      "dataPrecision": 8,
      "dataScale": 2
    }
  }
  </code></pre>