title: IPython Notebook and SQL: 'ImportError: No module named sql' when running '%load_ext sql'
body: <p>Just set up an IPython Notebook on Ubuntu 16.04 but I can't use <code>%load_ext sql</code>.
  I get: <code>ImportError: No module named sql</code></p>
  
  <p>I've tried using pip and pip3 with and without <code>sudo</code> to install ipython-sql. All 4 times it installed without issue but nothing changes on the notebook.</p>
  
  <p>Thanks in advance!</p>