Jep deprecations

deprecations

    Do not merge the jep-deprecations branch.

    The jep-deprecations branch is a glorified bug report to show the 
    deprecations. The deprecations were likely provoked by new versions of
    packages since I did a fresh installation from scratch.

    5c1076a 2014-01-15 10:23:19 -0500 An-Introduction--Notebook-Features.ipynb: 
    
        using %load_ext sympy.interactive.ipythonprinting has been deprecated
        
    508f280 2014-01-15 10:47:05 -0500 Interactive-3D-Earth-Satellites.ipynb: 
    
        WARNING:traits.has_traits:DEPRECATED: traits.has_traits.wrapped_class, 
        'the 'implements' class advisor has been deprecated. Use the 'provides'
        class decorator.
    
    16e1555 2014-01-14 22:32:27 -0500 Interactive-3D-Solar-System.ipynb: 
    
        WARNING:traits.has_traits:DEPRECATED: traits.has_traits.wrapped_class, 
        'the 'implements' class advisor has been deprecated. Use the 'provides'
        class decorator.

        The offending cell also has a bug, so it is in the jep-bugs branch.