Gamma Files: The Lost Update

Gamma Files 1.20.1.4.13

– Added Cats to Skylands' ruins. Why didn't nobody tell me Ocelots couldn't be tamed to Cats since 1.14?!
– Tweaked Skylands' ruins (filled the insides of the structures with Red Gel from Structure Gel, so that no blocks spawn inside of them).
– Tweaked Sound of Music Advancement (that told you to play music in the Medows biome, but there are no Meadows since 4.3).
– Removed all Piglin structures/traces from Ancient Cities. 
– Added Picture Mode by icanttellyou (from their permission).
– Tweaked menu button placement again (everything should be very organized now).
– Tweaked all Advancements' spelling to make all the articles be lowercase, and adverbs to be uppercase.
– Tweaked some Advancements' names.
– Tweaked Mushroom Coloines' loot tables as they still are able to spawn on Rich Soil. I wish I could just remove them.
– Reverted caves to be a bit less wide and huge, I went a little too far in 4.12. Set probability of them to spawn to 0.30. 
– Added Hamsters, Snails & Tunas from the mod Spawn.
– Added some stuff from Caverns & Chasms.
– Fixed Jerboa's spawns in Deserts.
– Added Unknown Maps to fishing treasure loot to help you locate cool structures.
– Tweaked Bunkers so that they don't have Lanterns.
– Fixed Portabella's & Button Mushroom's spawn.
– New "Tame Rodents" Advancement.
– Added Sweety's retextures of Fillet!