* parse arrays out of PQgetvalue
* listenAsync & notifyAsync
* LOBs
* COPY
* transaction savepoints
* transaction snapshots

* pq\Event\Result\Create, 
  pq\Event\Result\Destroy, 
  pq\Event\Connection\Reset, 
  pq\Event\Connection\Destroy
* fetchInto/fetchCtor?
* unlisten?
* pq\Result->__clone through PQcopyResult?
* db/pass/user/host/port/options properties on pq\Connection?
* LOB stream wrapper