| C | ↘ | D | Node got worse |
| ⇢ | A | Node::isEmpty() added | |
| ⇢ | A | Node::determineEmpty() added | |
| A | ↛ | Output::getResponse2() removed | |
| A | ↛ | Output::process2() removed | |
| A | ↛ | Output::searchTriggers2() removed | |
| A | ↛ | Output::__construct() removed | |
| A | ↛ | Output::isValidTrigger() removed |