Pixeltable

Important
This release contains a few breaking API changes. The most significant change is that the deprecated syntax for adding columns has been removed. This will now generate an error:
python
t['my_col'] = ...

Instead, do the following:
python
t.add_computed_column(my_col=...)

Please refer to the Pixeltable documentation (https://pixeltable.readme.io/) for additional details.

What's Changed
* PXT-179 Add a if_exists parameter to add_* APIs by anushas in https://github.com/pixeltable/pixeltable/pull/422
* Add a section on UDAs to the UDF feature guide by aaron-siegel in https://github.com/pixeltable/pixeltable/pull/437
* Various API changes for version 0.3.0 by aaron-siegel in https://github.com/pixeltable/pixeltable/pull/426
* Terminology: use 'aggregate' in place of 'aggregator' in UDF docs by aaron-siegel in https://github.com/pixeltable/pixeltable/pull/438
* Support tool choice in OpenAI and Anthropic by aaron-siegel in https://github.com/pixeltable/pixeltable/pull/436


**Full Changelog**: https://github.com/pixeltable/pixeltable/compare/v0.2.30...v0.3.0

What's Changed
* Add multimodal chat sample app by jacobweiss2305 in https://github.com/pixeltable/pixeltable/pull/419
* Windows Support: Update Makefile to enforce file creation with -Force option by jacobweiss2305 in https://github.com/pixeltable/pixeltable/pull/420
* Update hf datasets version by aaron-siegel in https://github.com/pixeltable/pixeltable/pull/425
* `pixeltable.functions.math` module by aaron-siegel in https://github.com/pixeltable/pixeltable/pull/427
* Sample Apps: AI-Based Trading Chrome Extension by pierrebrunelle in https://github.com/pixeltable/pixeltable/pull/428
* PXT-373 - Add if_not_exists parameter to drop_* APIs by anushas in https://github.com/pixeltable/pixeltable/pull/423
* Tool calling by aaron-siegel in https://github.com/pixeltable/pixeltable/pull/416


**Full Changelog**: https://github.com/pixeltable/pixeltable/compare/v0.2.29...v0.2.30

What's Changed
* PXT-361 - improve DataFrame docstrings by anushas in https://github.com/pixeltable/pixeltable/pull/394
* PXT-354: Bug: Indexed column for a view may not load correctly from persistence by anushas in https://github.com/pixeltable/pixeltable/pull/395
* PXT-235 - do not accept bool literals in int columns by anushas in https://github.com/pixeltable/pixeltable/pull/400
* PXT-372: Bug: Test-only: Assertion in ReloadTester by anushas in https://github.com/pixeltable/pixeltable/pull/409
* PXT-374: Bug: cannot create an index with the same name as one that e… by anushas in https://github.com/pixeltable/pixeltable/pull/406
* PXT-388: Change the SQL Engine isolation level to 'REPEATABLE READ' by anushas in https://github.com/pixeltable/pixeltable/pull/417
* Allow Function instances, UDFs, and UDAs to have multiple signatures by aaron-siegel in https://github.com/pixeltable/pixeltable/pull/403
* PXT-179 Add a if_exists parameter to create_* APIs by anushas in https://github.com/pixeltable/pixeltable/pull/401
* PXT-382: Bug: Similarity queries do not work correctly with ReloadTester by anushas in https://github.com/pixeltable/pixeltable/pull/411
* Adding a Gradio Example to our sample apps by pierrebrunelle in https://github.com/pixeltable/pixeltable/pull/415
* Fixes for pgserver by aaron-siegel in https://github.com/pixeltable/pixeltable/pull/421
* Support JSON Schemas for validating `JsonType` columns by aaron-siegel in https://github.com/pixeltable/pixeltable/pull/380


**Full Changelog**: https://github.com/pixeltable/pixeltable/compare/v0.2.28...v0.2.29

What's Changed
* Update Title in Readme.md of Discord Bot by pierrebrunelle in https://github.com/pixeltable/pixeltable/pull/399
* Update Expr.id after a call to substitute() by aaron-siegel in https://github.com/pixeltable/pixeltable/pull/402
* Working with Gemini notebook by anushas in https://github.com/pixeltable/pixeltable/pull/393
* Fixes for PyAV 14 by aaron-siegel in https://github.com/pixeltable/pixeltable/pull/405


**Full Changelog**: https://github.com/pixeltable/pixeltable/compare/v0.2.27...v0.2.28

What's Changed
* Update index.md by pierrebrunelle in https://github.com/pixeltable/pixeltable/pull/392
* Gemini adapter by aaron-siegel in https://github.com/pixeltable/pixeltable/pull/391
* PXT-345 Add .txt support for DocumentType by anushas in https://github.com/pixeltable/pixeltable/pull/389
* fix: use != instead of 'is not' for string comparison by jacobweiss2305 in https://github.com/pixeltable/pixeltable/pull/396

New Contributors
* jacobweiss2305 made their first contribution in https://github.com/pixeltable/pixeltable/pull/396

**Full Changelog**: https://github.com/pixeltable/pixeltable/compare/v0.2.26...v0.2.27

What's Changed
* Refactor the `docs` and `examples` folders by aaron-siegel in https://github.com/pixeltable/pixeltable/pull/378
* Move examples/ to docs/sample-apps/ by aaron-siegel in https://github.com/pixeltable/pixeltable/pull/379
* Readme Update: Added sample apps to table by pierrebrunelle in https://github.com/pixeltable/pixeltable/pull/381
* Python 3.13 Support by aaron-siegel in https://github.com/pixeltable/pixeltable/pull/382
* Test utility to verify query results after catalog reload by mkornacker in https://github.com/pixeltable/pixeltable/pull/365
* Lock av version in dev environment by aaron-siegel in https://github.com/pixeltable/pixeltable/pull/385
* Update pyproject.toml by aaron-siegel in https://github.com/pixeltable/pixeltable/pull/386
* Fix handling of Optional vs. Required in astype() by aaron-siegel in https://github.com/pixeltable/pixeltable/pull/387
* Friendlier `repr` output for Tables, DataFrames, and Expressions by aaron-siegel in https://github.com/pixeltable/pixeltable/pull/384
* Update Ollama integration for ollama 0.4.0 by aaron-siegel in https://github.com/pixeltable/pixeltable/pull/390
* Feature guide for time zones by aaron-siegel in https://github.com/pixeltable/pixeltable/pull/388
* PXT-288 - Provide pxt.io.export_parquet API by anushas in https://github.com/pixeltable/pixeltable/pull/374
* PXT-352 gracefully error when using a catalog.Table after it is dropped by anushas in https://github.com/pixeltable/pixeltable/pull/383
* Basic joins by mkornacker in https://github.com/pixeltable/pixeltable/pull/377


**Full Changelog**: https://github.com/pixeltable/pixeltable/compare/v0.2.25...v0.2.26