* parse arrays out of PQgetvalue
* listenAsync & notifyAsync
* LOBs
* COPY
* pq\Cancel

* fetchInto/fetchCtor?
* unlisten?
* tracing?
* userland event handler?
* notice receiver?
* pq\Result->__clone through PQcopyResult?
* db/pass/user/host/port/options properties on pq\Connection?