Random(De)Select v.2

A requested update of my Random(De)Select script. Now you can append to selection random percentage of objects by measuring the amount from selected or non-selected objects.

In other words, with you has for example 160 objects and 100 are selected and want to append new 50% to the selected, you have 2 options - if you get the % amount from selected then 50 new objects will be appended and you'll end with 150 selected objects (100 + 50), but if you choose % from non-selected, the amount will be 30 (50% of 60) and you'll end with 130 selected objects.

I hope this new improvement is welcome.