[Development] QList for Qt 6

[Jason H]

> Ok, QList as an alias for QVector takes care of the technical issues I
> have with using inheritance. It doesn't address my concerns regarding
> breaking QList behaviour. What purpose is served to call something QList
> that is in fact a QVector? Please spell it out for me, as I don't see
> it.

My understanding is that QVector requires contiguous memory, consuming a giant block for all the items in the list. QList is just a linked list. QVector will fail sooner when memory fragmentation is a problem. I would expect systems with long-running processes and limited RAM (i.e. embedded, a Raspberry Pi, phone, etc) to encounter this sooner than other systems, especially when the size of each object is large. (You could always just store pointers though)