Fix compatibility with PHP 5

Fixed

• Fix the GEO property #91 #91

Fix GEO property

Fixed

• Do not escape value of the GEO property #79

Fix dtEnd for all day events

Fixed

• All days events (no time) ends on the next day. #83
• Timezone will not applied on all days events #83

Added

• Add Event::getDtStart method #83

Reccurence Rule improvements.

Added

• Allow multiple recurrence rules in an event #77
• RecurrenceRule now also allows hourly, minutely and secondly frequencies #78

Deprecated

• Adding a single recurrence rule to an event using Event::setRecurrenceRule() is deprecated and will be removed in 1.0. Use Event::addRecurrenceRule() instead. #77

Fix GEO parameter.

Fixed

• Problem with GEO property when importing into Google Calendar #74

Version 0.10.0

Changed

• Use 'escapeValue' to escape the new line character. #60
• Order components by type when building ical file. #65

Added

• X-ALT-DESC for HTML types with new descriptionHTML field. #55
• Added a property and setter for calendar color. #68
• Write also GEO property if geo location is given. #66

Version 0.9.0

• Add CHANGELOG.md based on ’Keep a CHANGELOG’
• Allow new lines in event descriptions #53
• Breaking Change: Changed signature of the Event::setOrganizer method. Now there is is only one parameter that must be an instance of Property\Organizer.
• Updated install section in README.md #54
• Added support for event properties EXDATE and RECURRENCE-ID #50

Version 0.8.0

Add upgrade guide

Version 0.7.0

• fix set time zone name
• add categories to event

Version 0.6.1

Merge pull request #31 from php-workx/dates_with_utc_value

Dates with utc value