Q                       Queue function calls on the cluster
Q_rows                  Queue function calls defined by rows in a
                        data.frame
ZeroMQ                  Wrap C++ Rcpp module in R6 to get reliable
                        argument matching
clustermq               Evaluate Function Calls on HPC Schedulers (LSF,
                        SGE, SLURM)
register_dopar_cmq      Register clustermq as 'foreach' parallel
                        handler
workers                 Creates a pool of workers
