Django-recurrence

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* Add Slovakian translations 98;
* Add support for events occurring at a fixed point before the
end of the month - e.g. the second last Tuesday before the end of the month 88;
* Add minor style changes to make django-recurrence compatible with Wagtail 100;
* Allow changing the behaviour of generating recurrences on
``dtstart`` by default. You can opt in to this by setting
``include_dtstart=False`` on your ``RecurrenceField`` 93;
* Ensure broken values raise ``DeserializationError`` where expected 103.

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* Make PO-Revision-Date parseable by babel 75;
* Update installation notes to cover Django 1.10 74;
* Add German translation 77;
* Add Brazilian translation 79;
* Ensure the migrations are included when installing 78;
* Fix order of arguments to ``to_dateutil_rruleset`` 81.

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* Improve our testing setup to also cover Python 3.5;
* Fixes for Django 1.10 69.

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* Add Basque translations 67.

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* Drop official support for Django 1.4, Django 1.5, Django 1.6 and
Python 2.6 (no changes have been made to deliberately break older
versions, but older versions will not be tested going forward);
* Add official support for Django 1.8 and Django 1.9 62;
* Fix for a bug in ``Rule`` creation where the weekday parameter is
an instance of ``Weekday`` rather than an integer 57.

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* Added an option for events to occur on the fourth of a given
weekday of the month 29;
* Fixed an off-by-one bug in the ``to_text`` method for events
happening on a regular month each year 30;
* Fixed a bug in the JavaScript widget where the date for monthly
events on a fixed date of the month had the description rendered
incorrectly if the day selected was more than the number of days in
the current calendar month 31;
* Added a French translation 32 - this may be backwards
incompatible if have overriden the widget JavaScript such that
there is no ``language_code`` member of your recurrence object;
* Added a Spanish translation 49;
* Added database migrations - running ``python manage.py migrate
recurrence --fake`` should be sufficient for this version - nothing
has changed about the database schema between 1.1.0 and 1.2.0;
* Fix broken tests for Django 1.4.