v2.4.1 Fix CurlMulti crashing (TypeError) on numeric / integer-like request keys, including the default auto-index. Response::$key, MultiResult keys and add()'s return value are now int|string.
v2.4.1 Fix CurlMulti crashing (TypeError) on numeric / integer-like request keys, including the default auto-index. Response::$key, MultiResult keys and add()'s return value are now int|string.