[alexandria-devel] generic mean, variance, median, standard-deviation

Hi, Would it be possible to make MEAN, VARIANCE, MEDIAN, and STANDARD-DEVIATION generic? The concepts are meaningful for objects other than sequences --- including arrays and random-variables (see cl-random), sequences pre-sorted for easy quantile calculation, etc. Currently I am shadowing these and redefining them as generic in some of my libraries. I am happy to implement the change and send a patch. Best, Tamas