Added a little more information about the Holy Trinity.
I need to add one more from 10-23, but I'll get there.
Started on many cards system.
Finished switching functionality.

I need to polish it and rewrite comments, but that's fine.
Finished adding new functionality.

I still need to edit the comments and readme, but I can do that later.
Anyway, what I did was I made it so that you can only study new cards,
old cards, or all of them, because she just told us that there would
be none of the old pieces on the exam.