title: Cannot import Aer from Qiskit 0.7
body: <p>I've created a new virtual environment in Anaconda and installed several packages using pip (namely, numpy, scipy, matplotlib, qiskit and maybe 1 or 2 more). I open the interpreter and try to import a module from Qiskit:</p>
  
  <pre><code>from qiskit import Aer
  </code></pre>
  
  <p>As a result, I get <code>ImportError: cannot import name 'Aer'</code>. My understanding is that either Qiskit 0.7 has a different structure of the modules (which I can't find anywhere in the documentation) or that my setup has a conflict of some kind. How do I know what is the case and how do I fix it?</p>
  
  <p><strong>EDIT</strong>: I have a dual boot system. The problem occurs on Anaconda on Windows 10, but doesn't on Ubuntu 18 on pure Python. So I think it has to be something with Anaconda rather than Qiskit.</p>
  
  <p><strong>EDIT 2</strong>: I have made a clean install of Python (without Anaconda) and the problem persists. </p>