3.1.1

What's Changed

• Python 3.13 compatibliity
• Removed python-interface due to 3.13 incompatiblity
• MAINT: Numpy 2.0 compatibility by @stefan-jansen in #264
• Bump pypa/cibuildwheel from 2.21.1 to 2.22.0 by @dependabot[bot] in #271
• Bump codecov/codecov-action from 4 to 5 by @dependabot[bot] in #270
• Fix warnings related to Pandas 2.1.0 by @fstp in #260
• fix to support latest cython 3.1.0 by @gnzsnz in #281
• Bump pypa/cibuildwheel from 2.22.0 to 2.23.3 by @dependabot[bot] in #282
• Bump pypa/cibuildwheel from 2.23.3 to 3.0.0 by @dependabot[bot] in #286

New Contributors

• @fstp made their first contribution in #260

Full Changelog: 3.1...3.1.1

3.1

• Various updates to ensure NumPy 2.0 compatibility for Python >= 3.10

3.0.4

• update to Python 3.12

Version 3.0.3

What's Changed

• Bump pypa/cibuildwheel from 2.14.0 to 2.14.1 by @dependabot in #207
• DOC: updating docs by @stefan-jansen in #208
• Fix connection pool by @stefan-jansen in #210
• CI: Fix windows wheels by @stefan-jansen in #212

Full Changelog: 3.0...3.0.3

Version 3.0

What's Changed

• MAINT: Feature/zipline3dev (#18) by @MBounouar in #202
• REL 3.0-beta by @stefan-jansen in #206

New Contributors

• @ramashisx made their first contribution in #168
• @SilverSteven made their first contribution in #175

Full Changelog: 2.2.1...3.0

2.4

• finalizing conda-forge package
• moving out of beta after a couple weeks without issues

What's Changed

• RELEASE: v2.3 by @stefan-jansen in #146
• MAINT: Don't track _version.py by @MBounouar in #147
• devcontainer by @MBounouar in #148
• Fix codecov and CI badges by @MBounouar in #149
• MAINT: Move to exchange-calendars 4.x and more by @MBounouar in #158
• MAINT: Update to Python 3.11 by @stefan-jansen in #159
• Bump pypa/cibuildwheel from 2.11.4 to 2.12.0 by @dependabot in #160
• MAINT: remove unused argcheck by @MBounouar in #161

Full Changelog: 2.2.1...2.4

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

2.3

What's Changed

• RELEASE: v2.3 by @stefan-jansen in #146

Full Changelog: 2.2.1...2.3.0

2.2

With this release, we're moving to the actively maintained ecxhange_calendars from the no longer maintained trading_calendars - thanks to @MBounouar for making this happen! As a result, Zipline is now again compatible with the latest pandas versions.

2.1.1

The release simplifies the code by removing elements that are no longer necessary, addresses a few issues and improves the automatic build and test GHA workflows.

Pandas 1.3+ causes issues with trading-calendars; while we work out migration to the more actively maintained exchange_calendars, pandas is temporarily limited to version <=1.2.5.

Big shout-out to @MBounouar who made quite a few very useful contributions, namely:

• Migrate from nosetest to pytest (#9, #15 )
• Apply patch for futures backtesting (#3)
• Various revisions of the Cython extensions to facilitate maintenance and enhancements going forward (#46, #49)
• Address warnings and other maintenance issues.

In addition, there are several improvements to the automatic test and build process (#47, #48, #50, #51, #52).