For a full list and description of features, please see the Wiki.
The development version of this package can be directly installed with the R package devtools using:
install.packages("devtools")
library(devtools)
install_github("kornl/Crossover", subdir="pkg/Crossover", dependencies = TRUE, build_vignettes = TRUE)
But note that the crossover jar file is only rarely updated and it may be appropriate to build it yourself from the Java source code.
Otherwise just use the current version from CRAN.