Turned off test on Windows as mc.cores>1 not supported.
Turned off test on Windows as mc.cores>1 not supported.

vlulla/data.table,Rdatatable/data.table,Rdatatable/data.table,Rdatatable/data.table,Rdatatable/data.table,vlulla/data.table,jangorecki/data.table,vlulla/data.table,jangorecki/data.table,jangorecki/data.table,jangorecki/data.table,vlulla/data.table