bug fixes in multiTest
(1) in outer_procedure in line 241-246: the par(mfrow) argument will give an error if multiTest == 4, We need to put "if(multiTest <= 4)" or remove the whole part since l. 247: "par(mar = c(2, 2, 2, 3), mfrow = n2mfrow(multiTest))" already does the whole job.
(2)l. 279: also the "if(multiTest > 1)" condition must provide the variable of num_models e.g. "num_models <- maFo_rf$num_models" otherwise the iplot() function does not show correct numbers for mouse hover