Merge pull request
#1535 from doerwalter/master...
Merge pull request
#1535 from doerwalter/master
Fix pretty printing dispatch.
This patch fixes a problem mentioned here:
http://mail.scipy.org/pipermail/ipython-dev/2012-March/008874.html
Search for the best method to use for pretty printing an object now no longer prefers any registered printer in `type_printers` for the class or any of the base classes over a `_repr_pretty_` method defined in the class or any of its base classes.
Instead the mro is walked, looking for both registered printers and `_repr_pretty_` methods, so that the inheritance hierarchy will be taken into account.
