Datachain

What's Changed
* feat(dc): make expand work if some fields are optional by shcheklein in https://github.com/iterative/datachain/pull/607
* fix(tests): minor fix in comment by shcheklein in https://github.com/iterative/datachain/pull/618
* test_query_e2e: do not interrupt running script multiple times by skshetry in https://github.com/iterative/datachain/pull/614
* sqlitedb: retain `db_file` in `_connect` method to ensure proper connection on `db.clone()` by skshetry in https://github.com/iterative/datachain/pull/620
* [pre-commit.ci] pre-commit autoupdate by pre-commit-ci in https://github.com/iterative/datachain/pull/623
* Bump astral-sh/setup-uv from 3 to 4 by dependabot in https://github.com/iterative/datachain/pull/625
* dataset_select_paginated: do not clone on each paginated query by skshetry in https://github.com/iterative/datachain/pull/629
* docs: document prefetch by skshetry in https://github.com/iterative/datachain/pull/630
* fix type issues produced by new version of pydantic by mattseddon in https://github.com/iterative/datachain/pull/638
* Finish SQL functions refactoring by dreadatour in https://github.com/iterative/datachain/pull/543


**Full Changelog**: https://github.com/iterative/datachain/compare/0.7.1...0.7.2

What's Changed
* Increase resolution of `train_test_split` by 0x2b3bfa0 in https://github.com/iterative/datachain/pull/611
* Update ultralytics models (take two) by dreadatour in https://github.com/iterative/datachain/pull/613


**Full Changelog**: https://github.com/iterative/datachain/compare/0.7.0...0.7.1

What's Changed
* [pre-commit.ci] pre-commit autoupdate by pre-commit-ci in https://github.com/iterative/datachain/pull/608
* Bump codecov/codecov-action from 4 to 5 by dependabot in https://github.com/iterative/datachain/pull/609
* Implement pre-fetching in map() and gen() by rlamy in https://github.com/iterative/datachain/pull/521


**Full Changelog**: https://github.com/iterative/datachain/compare/0.6.11...0.7.0

What's Changed
* Fixing np array dumping by ilongin in https://github.com/iterative/datachain/pull/599
* Revert "Update ultralytics models" by shcheklein in https://github.com/iterative/datachain/pull/610


**Full Changelog**: https://github.com/iterative/datachain/compare/0.6.10...0.6.11

What's Changed
* Fix for instantiation of pulled dataset by ilongin in https://github.com/iterative/datachain/pull/573
* update pytest-servers to 0.5.8 by mattseddon in https://github.com/iterative/datachain/pull/596
* Fix 'limit' + 'offset' methods for SQLite warehouse by dreadatour in https://github.com/iterative/datachain/pull/595
* docs: move overrides inside docs/ dir by skshetry in https://github.com/iterative/datachain/pull/601
* feat(dc): add explode function by shcheklein in https://github.com/iterative/datachain/pull/581
* Split Dataset into train/test/val by dreadatour in https://github.com/iterative/datachain/pull/604
* Update ultralytics models by dreadatour in https://github.com/iterative/datachain/pull/592


**Full Changelog**: https://github.com/iterative/datachain/compare/0.6.9...0.6.10

What's Changed
* Update README.rst, added missing preposition. by gromag in https://github.com/iterative/datachain/pull/583
* [pre-commit.ci] pre-commit autoupdate by pre-commit-ci in https://github.com/iterative/datachain/pull/582
* readme next by dmpetrov in https://github.com/iterative/datachain/pull/584
* doc(agg): add an example with custom UDF spec by shcheklein in https://github.com/iterative/datachain/pull/586
* fix(dc): collect function return types by shcheklein in https://github.com/iterative/datachain/pull/589
* Adding `uuid` to dataset version by ilongin in https://github.com/iterative/datachain/pull/587

New Contributors
* gromag made their first contribution in https://github.com/iterative/datachain/pull/583

**Full Changelog**: https://github.com/iterative/datachain/compare/0.6.8...0.6.9