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* Update Python-Intro.rst

* Update README.rst

* [R-package] remove unused code and comments

* put check back

* other typos

* [ci] host some artifacts needed by R Windows CI jobs

* remove link

* host SWIG
Co-authored-by: Guolin Ke <guolin.ke@outlook.com>

* 'examples/README.md'

* 'examples\README.md'
Co-authored-by: Tripathi, Aishwarya <aishwarya_tripathi@dell.com>
Co-authored-by: James Lamb <jaylamb20@gmail.com>

* Refactors sklearn API to allow a list of evaluation metrics in the parameter eval_metric of the class (and subclasses of) LGBMModel. Also adds unit tests for this functionality

* Simplify expression to check whether the user passed one or multiple metrics to eval_metric parameter

* Simplify new tests by using custom metrics already defined in the test file

* Update docstring to reflect the fact that the parameter "feval" from the "train" and "cv" functions can also receive a list of callables

* Remove oxford comma from docstrings

Apply suggestions from code review
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

* Use named-parameters to make sure code is compatible with future versions of scikit-learn

Apply suggestions from code review
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

* Remove throwaway return value to make code more succinct
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

* Move statement to group together the code related to feval

* Avoid modifying original args as it causes errors in scikit-learn tools

For details see: https://github.com/microsoft/LightGBM/pull/2619



* Consolidate multiple eval-metrics unit-tests into one test
Co-authored-by: German I Ramirez-Espinoza <gire@home>
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

* [ci] remove texlive-fonts-extra and Azure checks R from CI

* put texlive-fonts-extra back

* [R-package] started implementing first_metric_only

* trying stuff

* more changes

* fixed handling of multiple metrics

* fixed tests

* remove duplicate tests

* get training tests

* fixes for lgb.cv()

* fixes for lgb.cv()

* fix linting

* add an allgood job for easy [required] builds

see https://github.community/t/is-it-possible-to-require-all-github-actions-tasks-to-pass-without-enumerating-them/117957/4?u=graingert



* Update .github/workflows/main.yml

* Update .github/workflows/main.yml
Co-authored-by: Thomas Grainger <tagrain@gmail.com>
Co-authored-by: James Lamb <jaylamb20@gmail.com>

* fix typo in R installation instructions

* move r installation instructions to correct version

* Update VERSION.txt

* Update .appveyor.yml

* remove 3.0-RC installation guide

* Apply suggestions from code review

* [R-package] bump version (#3345)
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>
Co-authored-by: James Lamb <jaylamb20@gmail.com>

* [R-package] add R package logo

* more changes

* add logo in the place CRAN expects

* revert unnecessary Rbuildignore stuff

* uploaded hex logo for R-package in SVG format (#3340)

* remove duplicate logo and fix CI

* use SVG instead of PNG
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

* [R-package] [ci] Reduce manual effort for version updates

* fix configure

* remove useless comment

* Update build_r.R
Co-authored-by: Guolin Ke <guolin.ke@outlook.com>

* fix recreate-configure check in CI
Co-authored-by: Guolin Ke <guolin.ke@outlook.com>

* Update README.md

* Update README.md

* Update README.md

* Update README.md

* Update README.md

* Update README.md

* Update README.md

* Update README.md

* Update README.md

* Update README.md

* Update README.md

* bump Xcode version at Travis

* remove temp fix for gcc at Travis

* bump RTD theme version

* Update requirements_rtd.txt

Added winning solution using LightGBM for M5 forecasting competition

* [ci] Test 32-bit builds for R package

* update README

* empty commit

* use integer type for handle

* Apply suggestions from code review

* fix 64bit handle

* fix typo

* fix typo

* fix zero bin

* some fix

* fix bin mapping

* fix

* fix bug

* use stable sort

* fix cat forced split

* Apply suggestions from code review

* Apply suggestions from code review

* Apply suggestions from code review

* [R-package] DESCRIPTION changes to address CRAN feedback

* CRAN likes single quotes

* the regex rules for Rbuildignore are weird

* ugh Rbuildignore

* how does this wooork

* just remove cran-comments.md in script

* adding Biarch back

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

* add submission 3 notes

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

* add docs on binary packages

* added docs on binary packages

* [R-package] Add documentation on building and using precompiled binaries for the R package

* Apply suggestions from code review
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

* hyphens

* Apply suggestions from code review
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

* add notes on source package

* add --no-multiarch to docs

* add cran-comments to Rbuildignore

* revert

* Apply suggestions from code review
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>
Co-authored-by: Nikita Titov <nekit94-08@mail.ru>

simplify start_iteration param for predict in Python and some code cleanup for start_iteration (#3288)

* simplify start_iteration param for predict in Python and some code cleanup for start_iteration

* revert docs changes about the prediction result shape