GitLab

* [docs] [R-package] fix HTML generation errors in R docs, update to roxygen2 7.3.3

* fix conda env

* Update R-package/R/lgb.Dataset.R
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

* update docs

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Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

* Add R-squared metric, documentation, and tests

* Fix static ci checks: correct Sklearn r2_score URL link, fix cpp linting errors

* Replace non-static data members from pragma reduction with variables

* Update src/metric/metric.cpp

* Add additional asserts, remove needless y.copy()

* Add back y.copy()

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Co-authored-by: James Lamb <jaylamb20@gmail.com>
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

[ci][docs] fix link checking action by switching from linkchecker to lychee and update some links (#7027)

Co-authored-by: James Lamb <jaylamb20@gmail.com>

* Handling NULL objective when booster is printed, moving test functions out of method tests, creating unique tests for different method situations

* Correcting whitespace

* Adding types for integer slices

* Moving test functions nearer to relevant tests, setting print to be default

* Update R-package/tests/testthat/test_lgb.Booster.R

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Co-authored-by: James Lamb <jaylamb20@gmail.com>
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

* [python-package] add a note about DART in early_stopping docstring

* add note in R docs too

[R-package] require lgb.Dataset, remove support for passing 'colnames' and 'categorical_feature' for lgb.train() and lgb.cv() (#6714)

Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

[R-package] only warn about early stopping and DART boosting being incompatible if early stopping was requested (#6619)

[R-package] skip integer categorical feature check when building dataset subset (fixes #6412) (#6442)

[R-package] [c++] add tighter multithreading control, avoid global OpenMP side effects (fixes #4705, fixes #5102) (#6226)

* dump sorted parameter aliases

* update lgb.check.wrapper_param

* update _choose_param_value to look like lgb.check.wrapper_param

* apply suggestions from review

* reduce diff

* move DumpAliases to config

* remove unnecessary check

* restore parameter check