Added

• Blood Moon: A new event that brings a dangerous lunar phenomenon to the world.
• Mod Config Screen: Added an in-game configuration screen for easier mod customization.
• Research System: A new research system that allows players to discover and unlock knowledge, recipes, and rewards through The Chronicler(wiki) .
  First-Person Animations: Added first-person animations for the Gargoyle Axe, Noctifer Tenebris (Umbra's Whisper), and Molten Fist. 
• JEI Compatibility: Added compatibility for the Stone Sanctum Table and Research Projects.
• Advancements: Added four new advancements: Forged by Frost, Payment Collected, Dawn of the Living, The Abyss Stares Back.
  Plants: Added three new plants: Abyss Bush, Sticky Shroom, and Mourning Thorns. All three can be used as brewing ingredients. 
• Blocks: Added a variety of new blocks, including: Bound Soul block set, Cursed Core block, Scorched Bone block, Karakondjul Pelt and Carpet, Umbral Sand block set, Forsaken Stone block set, Lantern of Hecate, Wooden Barricade
  Umbral Wasteland: Added a new biome filled with dark and otherworldly vegetation, structures, and dangers.
• Items: Added several new items, including: Higa Amulet, Nightfrost Toolset, Two new Music Discs, Copper Coin Sword, Tainted Bell, Spirit-Suppressing Bell, Tenebrite Shard, Refined Tenebrite.
• Mobs: Added seven new mobs: Jiangshi, Eidolon, Jelly Shade, Omecuiame, Draugr, The Chronicler, and the Lancer variant of the Possessed Armor.
• The Chronicler: Added a new NPC dedicated to the Research System.
• Easter Eggs: Added several hidden references and easter eggs, including:
  Calupoh; an alternate name for the Amarok.
  Ultra Marine; a reference associated with the Possessed Armor Inquisitor.
  Music Disc containing a reference to Castlevania.
• Tags: Added new tags for research stations, mob interactions, biome behavior, Hecate mechanics, team behavior, vegetation, mining, and food: PossessedArmorTargets, ChroniclerResearchStations, FearsHecate, HecateRepellents, HecateImmunem, BlackCharroTeam, IsUmbralWasteland, UmbralGround, UmbralVegetationMayPlaceOn, NightfrostPickaxeMinableOres, RawFood.
• Structures: Added Chronicler's house.

Changed

• M&L Advancement Icon: Updated the advancement icon used by Myths & Legends.
  Item Textures & Models: Updated and improved the textures and models of various items.
• AI Behaviors: Reworked and improved several mob AI behaviors.
• Mob Animations: Updated and improved animations for several entities.
• Structures: Re-designed and improved most existing structures.
• Black Charro: Completely reworked the boss, including its attacks, behavior, animations, and overall encounter.
• Umbra's Whisper: Renamed to Noctifer Tenebris.
  Increased the base cooldown.
  Cooldown can now be reduced by fulfilling specific requirements.
  Added an additional ability.
• Research System: Some item recipes that previously unlocked through conventional progression have been moved to the Research System.

Fixed

• Bug Fixes: Fixed numerous bugs, glitches, and inconsistencies throughout the mod.
• AI & Entity Behavior: Fixed various issues affecting mob AI and entity behavior.
  Rendering & Animations: Fixed several visual and animation-related issues.
• Structures: Fixed multiple structure-generation and placement issues.

Note

Minecraft 1.20.1 Backport: A backport to Minecraft 1.20.1 will arrive in a few weeks.