title: Add new line to text in UI of shiny app
body: <p>is there a way to add a new line when putting text through the UI?</p>
  
  <p>I currently have something like</p>
  
  <pre><code>mainPanel(
  h3("This is my app!\n\n"),
  h4("Download your data using the choose file button\n\n"),
  h4("Thank you for using the app!")
  )
  </code></pre>
  
  <p>but the new lines don't seem to be working. </p>