| ⇢ | A | Callback added | |
| ⇢ | A | CallbackBuilder added | |
| ⇢ | A | CallbackBuilderFactory added | |
| ⇢ | A | CallbackSpecification added |
| ⇢ | B | ArrayLoader::getCallbacksResolver() added | |
| ⇢ | A | CallbackSpecification::isSatisfiedBy() added | |
| ⇢ | A | CallbackSpecification::supportClause() added | |
| ⇢ | A | CallbackSpecification::__construct() added | |
| ⇢ | A | CallbackBuilder::addFrom() added | |
| ⇢ | A | CallbackBuilder::addTo() added | |
| ⇢ | A | CallbackBuilder::addOn() added | |
| ⇢ | A | CallbackBuilder::getCallback() added | |
| ⇢ | A | Callback::__construct() added | |
| ⇢ | A | Callback::__invoke() added | |
| ⋮ | view more | ||
| C | ↗ | A | CallbackHandler::add() improved |
| B | ↛ | CallbackHandler::processSpecs() removed | |