title: Seaborn lineplot using median instead of mean
body: <p>I'm using <code>seaborn.lineplot()</code> to create a line figure like this (a line representing mean, surrounded by a band representing the std):</p>
  
  <pre><code>sns.lineplot(x="trial", y="rvalues", hue="subject", err_style="band", ci='sd', data=df)
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/ouBKL.png" rel="noreferrer"><img src="https://i.stack.imgur.com/ouBKL.png" alt="enter image description here"></a></p>
  
  <p>My only issue is that since my data is not Gaussian, I care more about the <strong>median</strong> instead of <strong>mean</strong>. How to do that in Seaborn? </p>
  
  <p>Or are there similar tools that  are capable? I know I can do from scratch in matplotlib but that requires a lot of work to make it this nice.</p>