GitLab

* add predcontrib for sparse inputs

* register newly-added function

* comments

* correct wrong types in test

* forcibly take transpose function from Matrix

* keep row names, test comparison to dense inputs

* workaround for passing test while PR for row names is not merged

* Update R-package/R/lgb.Predictor.R
Co-authored-by: James Lamb <jaylamb20@gmail.com>

* Update R-package/R/lgb.Predictor.R
Co-authored-by: James Lamb <jaylamb20@gmail.com>

* Update R-package/R/lgb.Predictor.R
Co-authored-by: James Lamb <jaylamb20@gmail.com>

* proper handling of integer overflow

* add test for CSR contrib row names

* add more tests for predict(<sparse>, predcontrib=TRUE)

* make linter happy

* linter

* linter

* check error messages for bad input shapes

* fix regex

* hard-coded number of columns in regex for tests
Co-authored-by: James Lamb <jaylamb20@gmail.com>