Plone-event

----------------

- Fixed ``guesstz`` test to work with old and new ``pytz`` versions.
pytz 2014.2 and earlier say::

<DstTzInfo 'Europe/Vienna' CET+1:00:00 STD>

and pytz 2014.3 and later say::

<DstTzInfo 'Europe/Vienna' LMT+1:05:00 STD>

where ``LMT`` stands for Local Mean Time.
[maurits]

----------------

- Fix tests, where they broke with unicode recurrence strings and unicode date
formating strings.
[thet]

- Make rrule munging hack only apply to RDATEs, EXDATEs and UNTILs which have
null times, otherwise the DateRecurrenceIndex is broken for those who are
generating RRULES using a non-broken widget. This will still result in broken
RRULEs for some edge cases (where an RDATE is explicitly set for midnight on
a RRULE with a DTSTART which is not), but that's better than breaking valid
RRULES which are not generated improperly.
This code should go into the broken widget itself or its DataManager/Field.
[alecpm]

----------------

- Add duration parameter to recurrence_sequence_ical to include events, which
started before the queried timerange.
[thet]

-------------------

- Handle the case, that plone.formwidget.recurrence doesn't currently set the
times for UNTIL, RDATE and EXDATE definitions, what lead into wrong (or
better, unexpected) recurrence results with recurrence_sequence_ical. We now
replace the T000000 time definitions in the recurrence string with the time
of the start date for RDATE and EXDATE definitions and with the time of the
end of the day for UNTIL definitions (and so including a possible occurrence
on the UNTIL date, as defined by RFC5545).
This bugfix should be kept in here until the recurrence widget fixes that or
when it supports setting custom times for UNTIL, RDATE and EXDATE parts.
[thet]

------------------

- Add open_end attribute to IEventAccessor interface definition to mark events
without a defined end time.
[thet]

- Change of pydt signature: exact instead of microseconds and set the default
to False.
[thet]

------------------

- Raise test coverage to 100%.
[thet]

- Add date_to_datetime, is_date, is_datetime to plone.event.utils.
[thet]