| ⇢ | A | Operator added | |
| ⇢ | A | OperatorManager added | |
| A | ↛ | Expression removed | |
| A | ↛ | ExpressionManager removed |
| ⇢ | C | Operator::matches() added | |
| ⇢ | B | OperatorManager::createOperator() added | |
| ⇢ | B | Operator::isValid() added | |
| ⇢ | A | OperatorManager::isOperator() added | |
| ⇢ | A | OperatorManager::getOperator() added | |
| ⇢ | A | OperatorManager::getOperand() added | |
| ⇢ | A | Operator::__construct() added | |
| ⇢ | A | Operator::isNumber() added | |
| C | ↛ | Expression::matches() removed | |
| B | ↛ | Expression::isValid() removed | |
| A | ↛ | Expression::isNumber() removed | |
| A | ↛ | ExpressionManager::isExpression() removed | |
| A | ↛ | Filter::isExpression() removed | |
| A | ↛ | Expression::__construct() removed | |
| A | ↛ | Filter::matchesExpression() removed |