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* Issue 60: On Windows, Setuptools supports deferring to another launcher,
such as Vinay Sajip's `pylauncher <https://bitbucket.org/pypa/pylauncher>`_
(included with Python 3.3) to launch console and GUI scripts and not install
its own launcher executables. This experimental functionality is currently
only enabled if the ``SETUPTOOLS_LAUNCHER`` environment variable is set to
"natural". In the future, this behavior may become default, but only after
it has matured and seen substantial adoption. The ``SETUPTOOLS_LAUNCHER``
also accepts "executable" to force the default behavior of creating launcher
executables.
* Issue 63: Bootstrap script (ez_setup.py) now prefers Powershell, curl, or
wget for retrieving the Setuptools tarball for improved security of the
install. The script will still fall back to a simple ``urlopen`` on
platforms that do not have these tools.
* Issue 65: Deprecated the ``Features`` functionality.
* Issue 52: In ``VerifyingHTTPSConn``, handle a tunnelled (proxied)
connection.
Backward-Incompatible Changes
=============================
This release includes a couple of backward-incompatible changes, but most if
not all users will find 1.0 a drop-in replacement for 0.9.
* Issue 50: Normalized API of environment marker support. Specifically,
removed line number and filename from SyntaxErrors when returned from
`pkg_resources.invalid_marker`. Any clients depending on the specific
string representation of exceptions returned by that function may need to
be updated to account for this change.
* Issue 50: SyntaxErrors generated by `pkg_resources.invalid_marker` are
normalized for cross-implementation consistency.
* Removed ``--ignore-conflicts-at-my-risk`` and ``--delete-conflicting``
options to easy_install. These options have been deprecated since 0.6a11.
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