Remove the conduct-specific aspect of receiving spells as prayer boon.
Anyone now has a 25% chance of having the spell directly implanted
into their head, not just characters who have maintained illiterate
conduct. It can now also restore a forgotten spell or refresh one
that is nearly forgotten. It still tries to choose a spell which
isn't already known (new: or was known but has been forgotten) but if
it picks one that is known and doesn't need refreshing, a redundant
book will be given, same as the behavior in earlier versions.
The chance for receiving a blank spellbook is higher when that item
is undiscovered. When given as a prayer reward, make it become
discovered even if hero doesn't read it so that it will be less likely
to be given again. There's a 1% chance for that auto-discovery to
happen with other bestowed books. Unlike blank boots, having the book
be discovered doesn't lessen their chance of being repeat gifts.
Minor bug fix: for a spell implanted from scratch, the book remains
unknown. That's ok; it's actually more interesting than discovering
a book you haven't seen yet. But after acquiring and reading the book
you could get "you know <spell> quite well already" and the book would
stay undiscovered even though you were just told what spell it's for.