title: tmux transpose / rearrange panes?
body: <p>I have a layout right now that looks like</p>
  
  <pre><code> 1
  ***
   2
  ***
   3
  </code></pre>
  
  <p>and I want it to look like</p>
  
  <pre><code> 1
  ***
   3
  ***
   2
  </code></pre>
  
  <p>I know the command <code>C-b C-o</code> cycles their positions, but it's not possible to write a transposition as a product of cycles, mathematically speaking. I also know there are commands to reorder <em>windows</em> but I am interested in panes. Can this be accomplished?</p>