Bump LightGBM version to 2.1.1, fix R integer input crash (#1347)

* Bump R version

* Bump CLI/Py version

* Roll back to 2.1.1 in R

* Fix Microsoft/LightGBM#1280

R-package/DESCRIPTION

 Package: lightgbm
 Type: Package
 Title: Light Gradient Boosting Machine
-Version: 2.1.0
-Date: 2018-03-24
+Version: 2.1.1
+Date: 2018-04-29
 Authors@R: c(
 	person("Guolin", "Ke", email = "guolin.ke@microsoft.com", role = c("aut", "cre")),
 	person("Damien", "Soukhavong", email = "damien.soukhavong@skema.edu", role = c("ctb")),

R-package/R/lgb.Dataset.R

@@ -67,6 +67,14 @@ Dataset <- R6Class(
         }
       }
       
+      # Check for matrix format
+      if (is.matrix(data)) {
+        # Check whether matrix is the correct type first ("double")
+        if (storage.mode(data) != "double") {
+          storage.mode(data) <- "double"
+        }
+      }
+      
       # Setup private attributes
       private$raw_data <- data
       private$params <- params

VERSION.txt

-2.1.0
\ No newline at end of file
+2.1.1