title: Seaborn box plot broken after update to 0.6.0
body: <p>I have recently updated my seaborn from 0.5.1 to the new 0.6.0 version. I had been using seaborn to make box plots and violinplots in python notebookand now I can't seem to make my code work anymore. Matplotlib <code>plt.boxplot</code> still works with my data. Particularly, the problem seems to happen when I have a group of lists or arrays in which the subsets are different in size. </p>
  
  <p>e.g.:</p>
  
  <pre><code>import numpy as np
  import matplotlib.pyplot as plt
  import seaborn as sns
  x = np.array([1,3,4]), ([1,2])
  plt.boxplot(x) #this works
  
  
  
   import numpy as np
   import matplotlib.pyplot as plt
   import seaborn as sns
   x = np.array([1,3,4]), ([1,2])
   sns.boxplot(x) #doesn't work
  </code></pre>
  
  <p>This is the error I get when I try the seaborn box plot </p>
  
  <blockquote>
    <p>ValueError: List of boxplot statistics and  `positions` values must
    have same the length</p>
  </blockquote>
  
  <p>In the new seaborn tutorial, it says <code>sns.boxplot</code> should take everything that <code>plt.boxplot</code> does. Has anyone had the same problem with the update? Is there a way of making this work? If not, is there a way of installing both the 0.6.0 version and the 0.5.1 version and calling a specific version in certain notebooks?</p>