v0.16.0 Final

This is a major release from 0.15.2 and includes a small number of API changes, several new features, enhancements, and performance improvements along with a large number of bug fixes. We recommend that all users upgrade to this version.

Highlights include:

• DataFrame.assign method, see here
• Series.to_coo/from_coo methods to interact with scipy.sparse, see here
• Backwards incompatible change to Timedelta to conform the .seconds attribute with datetime.timedelta, see here
• Changes to the .loc slicing API to conform with the behavior of .ix see here
• Changes to the default for ordering in the Categorical constructor, see here
• Enhancement to the .str accessor to make string operations easier, see here
• The pandas.tools.rplot, pandas.sandbox.qtpandas and pandas.rpy
  modules are deprecated. We refer users to external packages like
  seaborn,
  pandas-qt and
  rpy2 for similar or equivalent
  functionality, see here for more detail.

See the Whatsnew for an extensive list of all API changes, enhancements and bugs that have been fixed in 0.16.0.