| ⇢ | B | vevent::__construct() added | |
| ⇢ | B | vtodo::__construct() added | |
| ⇢ | B | vjournal::__construct() added | |
| ⇢ | A | vcalendar::__construct() added | |
| ⇢ | A | vtimezone::__construct() added | |
| ⇢ | A | calendarComponent::__construct() added | |
| ⇢ | A | vfreebusy::__construct() added | |
| ⇢ | A | valarm::__construct() added | |
| D | ↗ | C | calendarComponent::_format_recur() improved |
| D | ↗ | C | calendarComponent::_duration_array() improved |
| B | ↛ | vevent::vevent() removed | |
| B | ↛ | vtodo::vtodo() removed | |
| B | ↛ | vjournal::vjournal() removed | |
| A | ↛ | vcalendar::vcalendar() removed | |
| A | ↛ | vtimezone::vtimezone() removed | |
| A | ↛ | calendarComponent::calendarComponent() removed | |
| A | ↛ | vfreebusy::vfreebusy() removed | |
| A | ↛ | valarm::valarm() removed |