Feature Updates:
-Reduced the book collection from 10 to 7 books.
-Fixed some typos.
-Added a hover effect when hovering over the bookshelf in the classroom.
-Minor fixes.
Game Balances:
-Increased the quality of the items given from reading books.
-Increased the quality of the items given from touching the tree.
-Exercise books now offer 10 points instead of 5.