[TO-DO] Adapt synthetic mirs so it becomes a generator function
The problem with our synthetic mirs is that they take a lot of space on the disk. If synthetic mirs would become a generator function we could avoid keeping the whole 250+ million elements list. It has a chance of the program running quicker than before and it would use much much less memory. If the used memory exceeds RAM we have the whole list being saved on a hard disk. Anyway. Let's try it.
Konrad