---
* Issue 121: Exempt lib2to3 pickled grammars from DirectorySandbox.
* Issue 41: Dropped support for Python 2.4 and Python 2.5. Clients requiring
setuptools for those versions of Python should use setuptools 1.x.
* Removed ``setuptools.command.easy_install.HAS_USER_SITE``. Clients
expecting this boolean variable should use ``site.ENABLE_USER_SITE``
instead.
* Removed ``pkg_resources.ImpWrapper``. Clients that expected this class
should use ``pkgutil.ImpImporter`` instead.
-----