| ⇢ | A | MaintenanceShell added | |
| F | ↗ | B | BlogController improved |
| ⇢ | B | MaintenanceShell::handleMaintenance() added | |
| ⇢ | A | MaintenanceShell::initialize() added | |
| ⇢ | A | MaintenanceShell::getOptionParser() added | |
| ⇢ | A | MaintenanceShell::checkKey() added | |
| ⇢ | A | MaintenanceShell::down() added | |
| ⇢ | A | MaintenanceShell::up() added |