**Backwards incompatible changes**
- clean: The list of ``ALLOWED_PROTOCOLS`` now defaults to http, https and
mailto. Previously it was a long list of protocols something like ed2k, ftp,
http, https, irc, mailto, news, gopher, nntp, telnet, webcal, xmpp, callto,
feed, urn, aim, rsync, tag, ssh, sftp, rtsp, afs, data.
**Changes**
- clean: Added ``protocols`` to arguments list to let you override the list of
allowed protocols. Thank you, Andreas Malecki!
- linkify: Fix a bug involving periods at the end of an email address. Thank you,
Lorenz Schori!
- linkify: Fix linkification of non-ascii ports. Thank you Alexandre, Macabies!
- linkify: Fix linkify inappropriately removing node tails when dropping nodes.
- Fixed a test that failed periodically.
- Switched from nose to py.test.
- Add test matrix for all supported Python and html5lib versions.
- Limit to html5lib ``>=0.999,!=0.9999,!=0.99999,<0.99999999`` because 0.9999
and 0.99999 are busted.
- Add support for ``python setup.py test``.
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