Smartypants

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- Abort processing if the flavour is in forbidden-list. Default of
[ "rss" ] (Idea of Wolfgang SCHNERRING.)
- Remove stray virgules from en-dashes. Patch by Wolfgang SCHNERRING

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- Some single quotes weren't replaced properly. Diff-tesuji played
by Benjamin GEIGER

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- Support upcoming pyblosxom 0.9 plugin verification feature

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- Initial release

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* Makefile

+ add ``LC_ALL=C`` test for locale setting on ``setup.py`` wrt 5

* change virtualenv invocation method in ``install_test`` target

* fix UnicodeDecodeError on opening ``smartypants.py``, which includes Unicode
characters, when running ``setup.py`` with Python 3 and specific locales
(5, patch by Benoît Monin)

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* fix requirement of Wheel, now optional (4)