3.2.0

• Now hhvm compatible!
• The validator can now detect a lot more problems. Many rules for both
  iCalendar and vCard were added.
• Added: bin/generate_vcards, a utility to generate random vcards for testing
  purposes. Patches are welcome to add more data.
• Updated: Windows timezone mapping to latest version from unicode.org
• Changed: The timezone maps are now loaded in from external files, in
  lib/Sabre/VObject/timezonedata.
• Added: Fixing badly encoded URL's from google contacts vcards.
• Fixed: Issue #68. Couldn't decode properties ending in a colon.
• Fixed: Issue #72. RecurrenceIterator should respect timezone in the UNTIL
  clause.
• Fixed: Issue #67. BYMONTH limit on DAILY recurrences.
• Fixed: Issue #26. Return a more descriptive error when coming across broken
  BYDAY rules.
• Fixed: Issue #28. Incorrect timezone detection for some timezones.
• Fixed: Issue #70. Casting a parameter with a null value to string would fail.
• Added: Support for rfc6715 and rfc6474.
• Added: Support for DateTime objects in the VCard DATE-AND-OR-TIME property.
• Added: UUIDUtil, for easily creating unique identifiers.
• Fixed: Issue #83. Creating new VALUE=DATE objects using php's DateTime.
• Fixed: Issue #86. Don't go into an infinite loop when php errors are
  disabled and an invalid file is read.