Spell slots is released.
Some quick info. You have 10 slots, every slot can be increased to 10. If there is a reason why you need to be able to increase it further let me know.
It doesn't look pretty in every mobile and landscape mode is prefered. I'll put it on the to-do-list.
When you view your spellbook for the first time the slots will be created and the page will reload.
Ooh, and for every beer that gets donated I'll code for an hour ;)
Have a nice weekend.