Feature request: Extract, add, extract, add...

[Angel Perez Subira]

When you add rar compressed isos with wiithon, it first extract every iso and then add them. The problem is if you want to add several isos you need a lot of free disk space for temporal isos. If after every extraction that iso is added, and is deleted before the next extraction you only need that 4.4Gb instead of 100 Gb if want to add 25 games at once (eg).