title: Angular currency mask
body: <p>I am new to Angular, and I've followed the <a href="https://stackoverflow.com/questions/49139595/angular-2-currency-mask">Angular 2+ Currency Mask</a> to get currency getting typed from left to right. But I have a requirement of a maximum value on this, which means the user will not be able to enter a value more than that.</p>
  
  <p>Can this be modified to handle that condition?</p>