Lenskit

What's Changed
* Add fractional temporal splitting by mdekstrand in https://github.com/lenskit/lkpy/pull/628
* don't crash on empty lists in RMSE by mdekstrand in https://github.com/lenskit/lkpy/pull/629


**Full Changelog**: https://github.com/lenskit/lkpy/compare/v2025.1.1b6...v2025.1.1b7

This adds an initial LensKit command-line utility and some small quality-of-life bits.

What's Changed
* Add utility function to load seeds from configuration files by mdekstrand in https://github.com/lenskit/lkpy/pull/625
* Add Markdown dataset statistics by mdekstrand in https://github.com/lenskit/lkpy/pull/626
* Add LensKit CLI tool and move data tools into it by mdekstrand in https://github.com/lenskit/lkpy/pull/627


**Full Changelog**: https://github.com/lenskit/lkpy/compare/v2025.1.1b5...v2025.1.1b6

Fix for a small type error in user-user CF, found by a student.

This includes some small fixes and improvements:

- upper bound on temporal split
- popularity metric
- better CUDA configuration
- better iterative training logging

What's Changed
* [MINOR:fix link] Update README.md by cakiki in https://github.com/lenskit/lkpy/pull/621
* Add a popularity metric by mdekstrand in https://github.com/lenskit/lkpy/pull/622
* add upper bound for global temporal split by mdekstrand in https://github.com/lenskit/lkpy/pull/623

New Contributors
* cakiki made their first contribution in https://github.com/lenskit/lkpy/pull/621

**Full Changelog**: https://github.com/lenskit/lkpy/compare/v2025.1.1b3...v2025.1.1b4

Mostly documentation fixes, plus some consistency work on model configuration.

Second beta release, with working MovieLens full content data loaders and dataset attributes.