* **Query parameter syntax has changed from `:1` for positional
and `:key` for dictionary keys to `%s` for positional and `%(key)s`
for dictionary keys**
* **`results_format` connection parameter has changed to `results_type`**
* High-performance C extension added
* Added `ssl_verify_cert` and `ssl_verify_identity` connection options
* Add Python 3.11 support