Major
9 new H-CG: Maeve, Tessa, and 3 VIP events.
3 new VIPs: Elf, Spider, and Magpie.
Ambrosia Tier 2: new Maeve H-scene, experimental upgrade UI, new upgrades, plus the ability to grow plants and fly over short gaps.
Spelunking Tier 2: new Tessa H-scene and 5 new caves.
Dragon Stones: new area, accessed north of the hut once you unlock Fly.
Slime Caves: new Dragon Stones area where you can hire Slime Girls as staff and toggle them on/off using daily income as upkeep.
Slime RPG: large new minigame inspired by Mewgenics and Slay the Spire, featuring slime breeding and turn-based combat. Includes 9 slime types, 3 evolutions each, 3/5/7 skills, 50+ relics, 20+ upgrades, auto-battle, skill upgrades, heat levels, and mastery progression.

Spelunking: added a Moon Medals Shop with 6 upgrades. Progress no longer persists between save files.
Minor
Spelunking: added new items — Rare Candy (+1 Level), Double Heart (x2 HP), and Yellow Key Bundle.
Spelunking Level Editor: improved performance, optimization, and added new features.
Added the Tiny Treasure Trio to Dragon Stones as a teaser for 0.4.
Rewrites have been made throughout the script.
Misc
Ambrosia: Velvet now acknowledges if you get Ambrosia before meeting Maeve, and Maeve no longer has the key in that case.
Restrictions on Velvet 5 and virginity loss have been softened, though Clover 2, Snow Leopard, and Griffon still require you either complete Velvet 5, or lose your virginity somewhere else to nudge players in Velvet's direction

Updated Skeleton Chest 3: Mammories of Magnitude to give +10 Daily Milk and +3 Tea Value.
Blessings: Slime Blessing bonus HP no longer blocks Ghost Blessing overhealing.
Added an arrow pointing to the Level Cave and Shop for accessibility.
Skeleton Chest rejection message now tells you how many keys you have and how many you need.
Improved the shares purchase menu for Android; pressing Enter now confirms.
Updated the Blessing Menu with sorting, better phone functionality, flavor text, and improved info layout.
Made small UI/info improvements to Alchemy and Cocktail Brewing.
Updated Velvet’s Reputation description.
Jessie Milk Delivery: fixed issues; Jessie now only appears if you can afford the batch.