Backwards Incompatible Changes
* Make `timeout` param of `executemany()` a keyword-only kwarg.
(by 1st1 in bb326fc0)
* Prohibit passing non-string instances as text arguments to queries.
(by elprans in ccc5f7a5)
New Features
* Add support for COPY IN.
(by elprans in 10d95d43 for 123)
* Add support for COPY OUT.
(by elprans and 1st1 in 5662d9f5 for 21)
Bug Fixes
* Refactor args parsing and config management for `connect()` and
`create_pool()`.
(by 1st1 in f280a566)
* Fix cancellation code to correctly ensure proper state of the waiter.
(by 1st1 in 0a491302)
* support postgres-xl version
(by songjy in ffb89592)
* Fix erroneous codec cache invalidation on internal codec aliasing.
(by elprans in df64f554 for 133)
* Fix potential segfault in text array decoder.
(by elprans in bbd116be)
* Limit max number of arguments (closes 127).
(by 1st1 in 128910e4 for 127)
Documentation
* Expand usage documentation, add FAQ.
(by elprans in e4bef17f)