title: Elegant way to change legend's title size in seaborn plot?
body: <p>I have created a seaborn pairplot and I want to change the size of the legend's title. 
  I have done that with:</p>
  
  <pre><code>matrix = sns.pairplot(...)
  lg = plt.gcf().legend(title='something')
  lg.get_title().set_fontsize(30)
  </code></pre>
  
  <p>Is there a more elegant way to do this? </p>
  
  <p>I know that matplotlib -used by seaborn- does not have a related property as discussed here: <a href="https://github.com/matplotlib/matplotlib/issues/8699" rel="nofollow noreferrer">https://github.com/matplotlib/matplotlib/issues/8699</a></p>