Changes for 0.72

.. code-block:: text

• Line2D, Text, and Patch copy_properties renamed update_from and moved into artist base class

• LineCollections.color renamed to LineCollections.set_color for consistency with set/get introspection mechanism,

• pylab figure now defaults to num=None, which creates a new figure with a guaranteed unique number

• contour method syntax changed - now it is MATLAB compatible

  unchanged: contour(Z) old: contour(Z, x=Y, y=Y) new: contour(X, Y, Z)

  see http://matplotlib.sf.net/matplotlib.pylab.html#-contour

• Increased the default resolution for save command.

• Renamed the base attribute of the ticker classes to _base to avoid conflict with the base method. Sitt for subs

• subs=none now does autosubbing in the tick locator.

• New subplots that overlap old will delete the old axes. If you do not want this behavior, use fig.add_subplot or the axes command