title: How to sort columns with scientific number with DT::datatables
body: <p>I have the following code using <strong><a href="https://rstudio.github.io/DT/" rel="nofollow noreferrer">RStudio DT</a></strong></p>
  
  <pre><code>library(shiny)
  library(DT)
  shinyApp(
    ui = fluidPage(
      DT::dataTableOutput('example')
    ),
    server = function(input, output) {
      output$example &lt;- DT::renderDataTable({
        table = cbind(LETTERS[1:5],c("9.95e-04","9.93e-06","9.93e-02","9.49e-03","9.10e-02"))
        table
      },   options = list(
        columnDefs = list(list(type = "scientific", targets = 1))
      ))
    }
  )
  </code></pre>
  
  <p>But it doesn't sort the scientific column as I intended. What's the right way to do it?</p>
  
  <p><a href="https://i.stack.imgur.com/axCQy.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/axCQy.jpg" alt="enter image description here"></a></p>
  
  <p>The correct descending order should be:</p>
  
  <pre><code>V1         V2
   C     0.0993
   E      0.091
   D    0.00949
   A   0.000995
   B 0.00000993
  </code></pre>