title: angular material2 autocomplete option row size
body: <p>Is there a directive, style or CSS setting to allow a change of the row size of the options?  </p>
  
  <p>The options seem to be spaced pretty far apart.  </p>
  
  <p>I was able to change the font &amp; line-height but not the row height.  </p>
  
  <p>Thanks!</p>