More Chiseled Bookshelf Variants

1.7.4:

• Fix Chiseled Bookshelves dropping themselves even when mined without Silk Touch

  Now they only drop themselves when mined with Silk Touch, otherwise they drop 3 books mimicking the vanilla Bookshelf behavior.

• 1.21.4(-11): Fix Chiseled Bookshelves not dropping at all even when mined with Silk Touch

_{License update to CC-BY-NC-SA 4.0 (previously MIT)}

Looking for changes of previous versions?
You can find them in the changelog history.