3.4.1

• A minor change to ensure that unittests work correctly in the sabre/dav
  test-suite.

3.4.0

• #196: Made parsing recurrence rules a lot faster on big calendars.
• Updated windows timezone mappings to latest unicode version.
• #202: Support for parsing and validating VAVAILABILITY components. (@Hywan)
• #195: PHP 5.3 compatibility in 'generatevcards' script. (@rickdenhaan)
• #205: Improving handling of multiple EXDATE when processing iTip changes.
  (@armin-hackmann)
• #187: Fixed validator rules for LAST-MODIFIED properties.
• #188: Retain floating times when generating instances using
  Recur\EventIterator.
• #203: Skip tests for timezones that are not supported on older PHP versions,
  instead of a hard fail.
• #204: Dealing a bit better with vCard date-time values that contained
  milliseconds. (which is normally invalid). (@armin-hackmann)

2.1.7

• Fixed: Issue #94, a workaround for bad escaping of ; and , in compound
  properties. It's not a full solution, but it's an improvement for those
  stuck in the 2.1 versions.

3.3.5

• #168: Expanding calendars now removes objects with recurrence rules that
  don't have a valid recurrence instance.
• #177: SCHEDULE-STATUS should not contain a reason phrase, only a status
  code.
• #175: Parser can now read and skip the UTF-8 BOM.
• #179: Added isFloating to DATE-TIME properties.
• #179: Fixed jCal serialization of floating DATE-TIME properties.
• #173: vCard converter failed for X-ABDATE properties that had no
  X-ABLABEL.

2.1.6

• Fixed: Minor change to make sure that unittests succeed on every PHP version.

3.3.4

• #154: Converting ANNIVERSARY to X-ANNIVERSARY and X-ABDATE and
  vice-versa when converting to/from vCard 4.
• #154: It's now possible to easily select all vCard properties belonging to
  a single group with $vcard->{'ITEM1.'} syntax. (@armin-hackmann)
• #156: Simpler way to check if a string is UTF-8. (@Hywan)
• Unittest improvements.
• #159: The recurrence iterator, freebusy generator and iCalendar DATE and
  DATE-TIME properties can now all accept a reference timezone when working
  floating times or all-day events.
• #159: Master events will no longer get a RECURRENCE-ID when expanding.
• #159: RECURRENCE-ID for all-day events will now be correct when expanding.
• #163: Added a getTimeZone() method to VTIMEZONE components.

3.3.3

• #142: CANCEL and REPLY messages now include the DTSTART from the
  original event.
• #143: SCHEDULE-AGENT on the ORGANIZER property is respected.
• #144: PARTSTAT=NEEDS-ACTION is now set for new invites, if no PARTSTAT is
  set to support the inbox feature of iOS.
• #147: Bugs related to scheduling all-day events.
• #148: Ignore events that have attendees but no organizer.
• #149: Avoiding logging errors during timezone detection. This is a workaround
  for a PHP bug.
• Support for "Line Islands Standard Time" windows timezone.
• #154: Correctly work around vCard parameters that have a value but no name.

3.3.2

• Changed: iTip broker now sets RSVP status to false when replies are received.
• #118: iTip Message now has a getScheduleStatus() method.
• #119: Support for detecting 'significant changes'.
• #120: Support for SCHEDULE-FORCE-SEND.
• #121: iCal demands parameters containing the + sign to be quoted.
• #122: Don't generate REPLY messages for events that have been cancelled.
• #123: Added SUMMARY to iTip messages.
• #130: Incorrect validation rules for RELATED (should be RELATED-TO).
• #128: ATTACH in iCalendar is URI by default, not BINARY.
• #131: RRULE that doesn't provide a single valid instance now throws an
  exception.
• #136: Validator rejects all control characters. We were missing a few.
• #133: Splitter objects will throw exceptions when receiving incompatible
  objects.
• #127: Attendees who delete recurring event instances events they had already
  declined earlier will no longer generate another reply.
• #125: Send CANCEL messages when ORGANIZER property gets deleted.

3.3.1

• Changed: It's now possible to pass DateTime objects when using the magic
  setters on properties. ($event->DTSTART = new DateTime('now')).
• #111: iTip Broker does not process attendee adding events to EXDATE.
• #112: EventIterator now sets TZID on RECURRENCE-ID.
• #113: Timezone support during creation of iTip REPLY messages.
• #114: VTIMEZONE is retained when generating new REQUEST objects.
• #114: Support for 'MAILTO:' style email addresses (in uppercase) in the iTip
  broker. This improves evolution support.
• #115: Using REQUEST-STATUS from REPLY messages and now propegating that into
  SCHEDULE-STATUS.

3.3.0

• We now use PSR-4 for the directory structure. This means that everything
  that was used to be in the lib/Sabre/VObject directory is now moved to
  lib/. If you use composer to load this library, you shouldn't have to do
  anything about that though.
• VEVENT now get populated with a DTSTAMP and UID property by default.
• BC Break: Removed the 'includes.php' file. Use composer instead.
• #103: Added support for processing [iTip][iTip] messages. This allows a user
  to parse incoming iTip messages and apply the result on existing calendars,
  or automatically generate invites/replies/cancellations based on changes that
  a user made on objects.
• #75, #58, #18: Fixes related to overriding the first event in recurrences.
• Added: VCalendar::getBaseComponent to find the 'master' component in a
  calendar.
• #51: Support for iterating RDATE properties.
• Fixed: Issue #101: RecurrenceIterator::nextMonthly() shows events that are
  excluded events with wrong time