0.23.1

Added

• Support for Python 3.11. (#2420)
• Allow setting an explicit multipart boundary in Content-Type header. (#2278)
• Allow tuple or list for multipart values, not just list. (#2355)
• Allow str content for multipart upload files. (#2400)
• Support connection upgrades. See https://www.encode.io/httpcore/extensions/#upgrade-requests

Fixed

• Don't drop empty query parameters. (#2354)

Removed

• Drop .read/.aread from SyncByteStream/AsyncByteStream (#2407)
• Drop RawURL. (#2241)