Repoze-sendmail

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- Add support for bulding docs and testing doctest snippets under ``tox``.

- Add ``setup.py docs`` alias (installs Sphinx).

- Converted docs to Sphinx.

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- Issue 13: fixed handling of headers with with multibyte unicode
characters at the point where the header is split into multiple
lines.

- Pull 15 - Extended repoze.sendmail with configurable `/usr/sbin/sendmail`
binary support

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- Dropped support for Jython until a Jython-2.7-compatible version of
``zope.interface`` becomes available.

- Dropped support for Python 2.5.

- Added suupport for Python 3.3.

- Improved test for SSL feature under Python 3.x.

- Added new tests for proper encoding of binary attachments.

- Cauterized resource leak warnings under Python 3.2.

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- Issue 7: fixed handling of to/from addresses with non-ascii
characters when using queued mail delivery.

- Suppressed duplicate usage message output from ``qp``.

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- Fixed ``qp`` queue processor mail delivery under Python 3.0.

- Added 'setup.py dev' alias (runs ``setup.py develop`` plus installs
``nose`` and ``coverage``).

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- Fixed `Message-Id` handling (see http://bugs.repoze.org/issue177).

- Provided improved support for encoding messages to bytes. It should now be
possible to represent your messages in `email.message.Message` objects just
with unicode (excepting bytes for binary attachments) and the mailer will
handler it as appropriate.

- Added tests for cPython 2.5, 2.6, 2.7, 3.2, jython 2.5 and pypy 1.8
compatibility.