| ⇢ | A | SimpleHandlerFactory added | 
| ⇢ | B | SimpleHandlerFactory::get() added | |
| ⇢ | A | Worker::invoke() added | |
| ⇢ | A | HandlerException::notFound() added | |
| ⇢ | A | SimpleHandlerFactory::getHandler() added | |
| ⇢ | A | SimpleHandlerFactory::__construct() added | |
| B | ↗ | A | Worker::tick() improved | 
| A | ↛ | Worker::getHandler() removed |