Custom lists

[KitKat20255]

Suggesting to add the ability to add an amount of custom rules in the custom mode. Let's say 10 different custom texts or generations, that each have it's own history and stats.
So you can practice your alt key words in a list, some hard to type words in another, some trigrams that you want to master and so on. And then you can see your progress over time in that exact area of practice.