2.4-beta.1

What's Changed

The most important change is compatibility with exchange_calendars >= 4.0, which in turn changes the datatype of time zones for trading sessions from timezone-naive to UTC:

Sessions are now timezone-naive (previously UTC). Schedule columns now have the timezone set as UTC. The times have always been defined in terms of UTC, but the dtype used to be timezone-naive.

• MAINT: Move to exchange-calendars 4.x and more by @MBounouar in #158
• MAINT: Update to Python 3.11 by @stefan-jansen in #159

Full Changelog: 2.3.0...2.4.0-beta.1