- Add Batch (pipeline) API support (http://blog.2ndquadrant.com/postgresql-latency-pipelining-batching/)
- Add LISTEN/NOTIFY support
- Add support for range types
- Add large object support
- Add namespace support for types?
- Add serializers/deserializers for the "hstore" data type?  (Probably map them to hashtables)  This is a Postgres extension, not part of core so not sure if we should support it at all.