check out the healthyness of dependencies, keep as light s possible

[hoppanda]

[gravesti]

One package we could consider removing is DescTools which I believe we only use for Quantile(). I think stats::quantile() should be able to calculate the same type.

Ah, we used it for weighted quantiles. Have to think about this more then
Actually we only use it for the median, so we could use a more lightweight package such as matrixStats.

#181
I don't believe the difference in median calculation type will have an impact for our purpose, since I think only care about partitioning the data.