Added:

Mods:

• DragN's Livestock Overhaul!
• Presence Footsteps (Forge)
• Simple Villager Follow
• No More Pop-ups
• Illage and Spillage: Respillaged
• Illage and Spell-age: Iron's Spells Addon
• Every Compat (Wood Good)
• Chunks fade in
• Amendments
• BadOptimizations
• Loading Protection
• Alex's Mobs Delight
• Snekcraft
• Redstone Pen
• Over Here!

Resource Packs:

• FarmLife Remastered ( Animal Overhaul! Horse, Cow, Pig, Sheep )
• The Wither, King of the Nether
• Presence Footsteps Modded Support
• Enchanting Reimagined
• Enhanced Boss Bars

Removed: 

Mods:

• Achievements Optimizer
• Toast Control
• Colorwheel
• Overweight Farming
• Cerulean
• Alex's Delight

Resource Packs:

• Mizuno's Chicken Variants
• Mizuno Goat Variant [Unofficial]

Gameplay Changes:

• New Name Tag recipe
• Genetic Animals: Removed Genetic Sheep and Genetic Pigs
• SwellPack: Goat Variation and New Ender Dragon and Wither Boss Bars
• Solas Shader: Reverted to 3.1b and reduced fanciness/overhead, made clouds simpler, and gold now is emissive)
• SwellAssortments: Fixed Player repawn points being reset to World Spawn every time the player relogged. Regen on Villagers and Iron Golems nerfed, but now Iron Golems basically have Thorns and reflect small damage back attacking enemies upon hit
• Unusual Prehistory 2: New Dinosaurs