Fixes bugs, backports some stuff that doesn't add new content, and optionally does some other stuff. Everything can be toggled in the configs.

Features

Vanilla/Forge Bug Fixes

• Fixed mergeItemStack behavior in vanilla, dupes and more in CoFHCore.
• Fixed enchantment visual effects messing up the render state.
• Fixed particle depth sorting. Does not yet fix translucent particles ignoring other translucents.
• Fixed leads breaking immediately after being placed on some modded fences.
• Lava will only hiss when mixing with water.
• Corrected mineshafts air bubles being created above their dirt rooms.
• Leaves will not give drops in addition to itself when sheared.
• Tall Grass will not give drops in addition to itself when sheared.
• Shears will take damage when used to mine any block.
• Made leaf decay check far enough away to prevent large jungle trees from decaying.
• Prevented sign update packets for unloaded chunks from sending chat messages.
• Stone Monster Eggs blocks will only spawn one Silverfish when broken.
• Made structure component downfilling replace plants and blocks flagged as replaceable.
• Clear most plants on top of Village paths.
• Fixed Zombie village sieges.
• Fixed desert village well material.
• Fixed improperly terminated client connections sometimes causing a severe resource leak.
• Prevented non-layered snow blocks from melting when lighting errors occur.
• Fixed the anvil sound type step sound.
• Fixed several vanilla block sounds.

Vanilla/Forge Optimizations

• Made layered snow face culling more effective.
• Optimized full item stack nearby stack checking.
• Stopped the Redstone Torch burnout map from leaking memory.
• Optimized isPotionActive checks and the setAir data watcher on most entities.
• Optimized get block by ID calls for air blocks.
• Optimized single player world loading by skipping initial chunk load.
• Optimized several functions used by setting buttons. (off by default)
• Optimized the function that reads options.txt. (off by default)

Random block tick removal:

• Pumpkins
• Jack O' Lanterns
• Non-layered snow
• Torches

Used a faster random implementation in:

• Effect rendering
• Entities
• Items
• The internal server
• Item rendering
• World rendering
• The world (off by default, alters world gen)
• Hoppers
• Chests

Prevent storage blocks from splitting held stacks when broken:

• Chests (off by default)
• Hoppers (off by default)

Vanilla/Forge Tweaks

• Made Enchantment Tables emit particles for any block with enchantment power.
• Trapdoors no longer require attachment blocks. (propagates to many modded trapdoors)
• Place pressure plates on almost any wall or fence. (propagates to many modded walls and fences)
• Place torches on almost any fence. (propagates to many modded fences)
• Place torches on almost any wall. (propagates to many modded walls)
• Prevent "An attempt was made to register extended properties using an existing key" log spam.

Flat and scaling damage tuning options for:

• Drowning
• Poison
• Starvation
• Suffocation
• Wither

Tweaks that are off by default:

• Farmland trampling immunity
• Farmland water from below checks
• Farmland unique wet and dry side textures
• Un-restricted End Portal placement
• Clear potion particles for client player entities
• Lightning strike volume/range control
• Open to LAN port override (default is 25565)
• Broadcast Settings button can be disabled or removed
• Open to LAN button can be disabled or removed
• Super Secret Settings button can be disabled or removed

Vanilla Backports

• Cobwebs can be collected with Shears without Silk Touch.
• Dead Bushes drop 0-2 Sticks.
• Minecarts with TNT explode when hit by fire arrows.
• Ender Pearls can be thrown in creative mode.
• Fire Charges have a use sound.
• Pumpkins and Jack O' Lanterns can be placed without a solid block below them.

Mod Bug Fixes

• Thaumcraft candles no longer crash the game if given invalid metadata.
• Witchery Garlic Garlands use correct bounds on all rotations.
• Witchery Leaves respect Optifine video settings.
• Witchery Leaves don't drop saplings when sheared.
• Extra Utilities Trading Post now has a bottom texture.
• Extra Utilities Trading Post will now filter out nitwits from Village Names.
• Gany's Surface trapdoors use the correct back texture when open.
• Aether II reuses a player renderer object across frames, fixing a possible memory leak.
• MrCrayfish's Furniture Mod blocks no longer cause reoccurring NPEs that can ruin saves. (impacted saves can be loaded again)

Ore dictionary registration for:

• Thaumcraft Greatwood and Silverwood leaves
• Thaumcraft Thaumium Blocks
• Thaumcraft Greatwood and Silverwood stairs
• Witchery wooden slabs

Correct block sound types for:

• plants from Pam's Temperate Plants
• assorted blocks from Extra Utilities
• assorted blocks from Torch Levers
• assorted blocks from Witchery

Mod Tweaks

• Recipes for Thaumcraft Ancient Stone slabs and stairs.
• Recipes to turn Thaumcraft slabs back into blocks.
• Pastebin proxying for LLibrary to bypass regional blocks that cause crashes. (off by default)
• Disable MrCrayfish's Furniture Mod achievements. (off by default)

Flat and scaling damage tuning options for:

• Extra Utilities Deep Dark

Requirements

UniMixins

Modpacks

You don't even need to ask, go ahead.

Special Thanks

• RoadHog360 and Makamys for contributing some fixes.
• AstroTibs for creating the icon.
• Several others for reporting vanilla and mod bugs.