Change Log

Unreleased

The client API has been significantly overhauled. It now resembles hyper's, with separate Connection and Client objects. See the crate-level documentation for more details.
Connection string configuration now fully mirrors libpq's syntax, and supports both URL-style and key-value style strings.
The TLS connection mode (e.g. prefer) is now part of the connection configuration rather than being passed in separately.
The Cargo features enabling ToSql and FromSql implementations for external crates are now versioned. For example, with-uuid is now with-uuid-0_7. This enables us to add support for new major versions of the crates in parallel without breaking backwards compatibility.
Upgraded from tokio-core to tokio.

FromSql implementations can now borrow from the data buffer. In particular, this means that you can deserialize values as &str. The FromSqlOwned trait can be used as a bound to restrict code to deserializing owned values.
Added support for channel binding with SCRAM authentication.
Added multi-host support in connection configuration.
The client now supports query pipelining, which can be used as a latency hiding measure.
While the crate uses tokio by default, the base API can be used with any asynchronous stream type on any reactor.
Added support for simple query requests returning row data.

The with-openssl feature has been removed. Use the tokio-postgres-openssl crate instead.
The with-rustc_serialize and with-time features have been removed. Use serde and SystemTime or chrono instead.

Look at the release tags for information about older releases.