title: How can I reduce row height in DT datatables
body: <p>I would like to be able to get 'slimmer' rows when rendering a <code>DT</code> datatable (ie decrease that height)</p>
  
  <pre><code>options(digits.secs=6)
  library(data.table)
  d = data.table(x = 1:10,time = as.POSIXct('2015-03-23 12:00:00.123'))
  library(DT)
  datatable(d)
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/Qt7l4.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Qt7l4.png" alt="enter image description here"></a></p>