This issue is to keep track of methods that are marked for removal in 1.17, so whoever ports the mod has an easier time tracking.

• InventoryBlock#dropInventoryItems(BlockState, World, BlockPos, InventoryTileEntity): Replaced with IItemHandler method
• slimeknights.mantle.multiblock: Moved to Tinkers Construct as that was the only mod using it and it needed rewrites. Will pull back the updated version if any dependency requests it.
• InventoryTileEntity.inventoryTitle: Separated into two fields, one for custom name and one for regular so we can tell them apart.
• RenderingHelper.drawHoveringText: Reimplemented in Forge, can use Forge util directly.
• BookHelper.getSavedPage: Renamed to getCurrentSavedPage
• BookHelper.writeSavedPage: Renamed to writeSavedPageToBook
• slimeknights.mantle.client.screen.book.BookmarkButton: Has been unused since 1.13 port of books
• AddEntryLootModifier deprecated constructor
• ReplaceItemLootModifier deprecated constructor

Reduced protection levels:

• RetexturedLootFunction: Make serializer constructor private
• IngredientIntersection: Make constructors protected
• IngredientWithout: Make constructors protected, consider rename to IngredientDifference

Packages and renames:

• Move SizedIngredient, EntityIngredient, and FluidIngredient into the new recipe.ingredient package
• Move BookTransformer into the client.book.transformer package
• Move RetexturedLootFunction into the new loot.function package
• IngredientWithout: Rename to IngredientDifference

Completed all of the book-related ones in 982588f

Completed on the 1.18 branch.