| A | ↘ | B | Backup_Status got worse | 
| ⇢ | B | Backup_Status::catch_fatals() added | |
| ⇢ | B | Backup_Status::is_running() added | |
| ⇢ | A | Backup_Status::cleanup_after_crash() added | |
| ⇢ | A | Notices::clear_notice_context() added | |
| ⇢ | A | Backup_Status::has_crashed() added | |
| ⇢ | A | Backup_Status::set_status_callback() added | |
| A | ↘ | B | Backup_Status::finish() got worse | 
| A | ↘ | B | Backup_Status::start() got worse | 
| C | ↘ | D | CLI::backup() got worse |