UPDATES:

~19v02
herd mentality
Fish will no longer give the hunger effect based on user feedback
FINALLY FIXED MOB SPAWNING: previously, barely any mobs were spawning and it was caused by the fried egg advancement?? So will be disabled until I can fix it

~19v01
Oceans and rivers are far deeper
Deep dark is completely quiet.
Debris now actually generates in jungles!
Ancient debris now generates in Fossils dynamically rather than hardcoded, and also only in the deepslate layer
The nether no longer has a roof, and will have "shattered" generation
The nether now has a new biome: the nether depths!
All swamp huts now have chests.
Fixed a few issues regarding achievements
Jungles now have both vanilla and my custom trees.
Fixed ruined portal giving feather falling chestplates, leggings, and helmets
Fixed pillager outpost and mansion explorer maps not working
Gear found in end cities may now have a new custom curse enchantment

~17v20
AntiAfk now also checks position in addition to rotation to make it harder to bypass
Spiders now drop slightly less string on average than cave spiders
Pumpkins now require silk touch to collect, and otherwise drop seeds
Bread found in underground structures will often be moldy
Less iron from shipwrecks as they could be used to skip the early game progression.
A rare new item in big ocean ruins
Some creepers are now duds
Skeletons in jungles now sometimes fire poison arrows instead
Can now burn paper and maps as fuel
Milk bottles can now be found in swamp huts, and clears all affects. It can be upgraded to a splash potion by a master level cleric.
Milk also gives skeletons and variants resistance
Hero of the village/bad omen now properly apply luck/badluck respectively
Sleeping players are now given the hunger effect
Mining fatigue now also gives the weakness effect
Rabbit litters are now genetically accurate
Pigs now have litters of 1-3 as well
A few new achievements
Decreased the amount of villagers and golems for hero of the pillage
More balancing of villager trades: Tool/weapon smiths can only sell 1 each restock, librarians only sell 3 Ebooks etc
Breaking villager workstations now raises their prices slightly
Lightning now properly deals damage to undead mobs by inflicting instant health instead of damage.
Cake recipe now requires sweet berries
Insomnia re-enabled
Mushrooms now drop again from mushroom blocks
Support for custom model data of a few special items such as Fried eggs, moldy bread, blackstone swords, etc
Fixed a bunch of other miscellaneous bugs

~17v19
Can no longer combine tools without the grindstone finally working
Naturally spawned zombie villagers now keep their profession when cured
Can now burn wheat as fuel
All participants now get the "free the end" advancement
More balancing of villager trades: Tool/weapon smiths can only sell 1 each restock
Powered rails now require copper instead of gold
Mining fatigue now gives the weakness effect
Rolled back the experimental sleep changes I was working on and accidently left in. I suddenly realized the sleep function was not working as intended, but it should work now.

~17v18
Sticks are now more common and vary by tree type
Saplings are far less common (Closer to vanilla) and vary by tree type
book recipe shaped
Taller Snowy Mountains
More erratic Ice spikes biome
Saplings can only be recollected with silk touch
Removed a leftover loot table from another pack I was making

~17v17
LOGS NOW DROP FROM EXPLOSIONS
skeletons only drop arrows when using a bow
leaves and flowers can now be used as furnace fuel
Soul speed now works on sand
Decreased chance of carrot/potato from regular zombie slightly
Slightly Rarer emerald from regular pillagers/vindicators
Mushroom blocks no longer drop mushrooms
Pillager outposts now have Target blocks
Fishing crate now works

~17v16
Mob weight should no longer affect any entity unable to pick up or wear armor.
Seeds are also now much rarer, so they feel rewarding when you finally find some to start a farm, and also cutting down on accidently getting a ton when you dont need them late game.

~17v15
Bows and crossbows held by mobs are no longer affected by weight, since they are way too common (skeletons/piglins) and sometimes cause lag. Armor will still be affected as normal

~17v14
Evokers now use their totems
Witches can now throw blindess
and more!

~17v13
Anti lag improvements and other various bugfixes of villagers

~17v12
Massive lag improvements
Animal Healing

~17v11
New zombie villager loot
End Ship NBT
Fixed a small issue where the end teams color was not showing properly due to an oversight

~17v10
Introducing Sandstorms! Being in a desert biome when the weather is thunder gives players the blindness effect.
Endermen that spawn in the overworld now have a very small chance to spawn with either grass or sand providing a technically renewable way of getting them in case you are doing a survival challenge.
Black cats now give nearby players the bad luck effect.

~17v9
Iron Golems are now immune to poison, wither, and regeneration.
The special mobs that spawn with the wandering trader are now properly leashed to him.
Armor weight now shows as an exact percentage rather than an arbitrary value.

~17v8
Better Pillager Outpost NBT! Includes a guaranteed capatin on the top floor guarding the chest, fences on the first floor to prevent walking out the window, and a lightning rod on the roof!
Better shipwrecks NBT! Replaced chests with barrels and removed the doors that cause air pockets!
Removed spyglass_at_baby joke achievement because of PM guidelines.

~17v7
Added a check to make sure you can only regain maxhealth when your max health is less than 10 hearts.

~17v6
Updated the swamp hut loot table to include several new drops, while also making the potions rarer.
Added a way to regain maxhealth back. Simply sleep for five consecutive days to gain one heart!

~17v5
Custom swamp huts finally working
The wandering trader now has a chance to show up with several one or two of different mobs

~17v4
Made slab and stair recipes actually unlockable. With do limited crafting on, they were previously unobtainable
The function that fixes sheep now affects bred sheep as well.

~17v3
Tons of anti-lag improvements

~17v2
Undocumented

~17v1
Undocumented