| ⇢ | A | RegenerateBirthdayCalendars added | |
| B | ↘ | C | BirthdayService got worse |
| ⇢ | A | RegenerateBirthdayCalendars::run() added | |
| ⇢ | A | BirthdayService::resetForUser() added | |
| ⇢ | A | RegenerateBirthdayCalendars::__construct() added | |
| ⇢ | A | RegenerateBirthdayCalendars::getName() added | |
| C | ↘ | D | BirthdayService::buildDateFromContact() got worse |