title: The sip module implements API v11.0 to v11.2 but the PyQt5.QtCore module requires API v11.3
body: <p>I have a problem with this error. For the record, I'm using PyQt4. Thanks for any help!</p>
  
  <pre><code> (C:\Users\ewasn\Anaconda2) C:\Users\ewasn\Desktop\DataShift&gt;python data_inconsistency_api.py
  Traceback (most recent call last):
    File "data_inconsistency_api.py", line 9, in &lt;module&gt;
      from multivariate_outliers import MultivariateOutliers
    File "C:\Users\ewasn\Desktop\DataShift\multivariate_outliers.py", line 8, in &lt;module&gt;
      import matplotlib.pyplot as plt
    File "C:\Users\ewasn\Anaconda2\lib\site-packages\matplotlib\pyplot.py", line 114, in &lt;module&gt;
      _backend_mod, new_figure_manager, draw_if_interactive, _show = pylab_setup()
    File "C:\Users\ewasn\Anaconda2\lib\site-packages\matplotlib\backends\__init__.py", line 32, in pylab_setup
      globals(),locals(),[backend_name],0)
    File "C:\Users\ewasn\Anaconda2\lib\site-packages\matplotlib\backends\backend_qt5agg.py", line 16, in &lt;module&gt;
      from .backend_qt5 import QtCore
    File "C:\Users\ewasn\Anaconda2\lib\site-packages\matplotlib\backends\backend_qt5.py", line 27, in &lt;module&gt;
      import matplotlib.backends.qt_editor.figureoptions as figureoptions
    File "C:\Users\ewasn\Anaconda2\lib\site-packages\matplotlib\backends\qt_editor\figureoptions.py", line 17, in &lt;module&gt;
      import matplotlib.backends.qt_editor.formlayout as formlayout
    File "C:\Users\ewasn\Anaconda2\lib\site-packages\matplotlib\backends\qt_editor\formlayout.py", line 58, in &lt;module&gt;
      from matplotlib.backends.qt_compat import QtGui, QtWidgets, QtCore
    File "C:\Users\ewasn\Anaconda2\lib\site-packages\matplotlib\backends\qt_compat.py", line 127, in &lt;module&gt;
      from PyQt5 import QtCore, QtGui, QtWidgets
  RuntimeError: the sip module implements API v11.0 to v11.2 but the PyQt5.QtCore module requires API v11.3
  </code></pre>