| ⇢ | A | Jetpack_JSON_API_Sync_Unlock_Endpoint added |
| ⇢ | B | Jetpack_JSON_API_Sync_Unlock_Endpoint::result() added | |
| ⇢ | A | Jetpack_Sync_Actions::maybe_schedule_sync_cron() added | |
| ⇢ | A | Jetpack_Sync_Actions::init_sync_cron_jobs() added | |
| ⇢ | A | Jetpack_Sync_Actions::sanitize_filtered_sync_cron_... added | |
| ⇢ | A | Jetpack_Sync_Queue::get_lock_option_name() added | |
| A | ↘ | B | Jetpack_Sync_Queue::set_checkout_id() got worse |
| B | ↘ | C | Jetpack_Sync_Sender::do_sync_and_set_delays() got worse |
| A | ↛ | Jetpack_Sync_Queue::get_checkout_transient_name() removed |