Created in version 2.1

Version 1.0.0 - 1.2.0:
MCreator 2025.2 and ModMonster on Youtube

Version 1.2.2 - 2.0:
Reddit: /Minecraft; /MinecraftCommands
Minecraft Wiki
Minecraft Forum
Youtube videos (I do not remember the names)

Version 2.3:
https://minecraft.wiki/w/Function_(Java_Edition)
https://minecraft.fandom.com/wiki/Target_selectors
https://www.youtube.com/watch?v=HJJb2s2fFFc (not what I was looking for, but quite a nice guy)
https://www.youtube.com/watch?v=GwRfluFO3Tk
https://www.youtube.com/watch?v=ALb1uqgOyBk
https://gaming.stackexchange.com/questions/310050/how-do-you-type-the-symbol-section-sign-in-minecraft
https://www.youtube.com/watch?v=h_wCyA0MIa4
https://www.reddit.com/r/MinecraftCommands/comments/b4enmm/how_can_i_track_player_kills_on_a_zombie_or/

Gemini AI gave me:
  In the advancement file
  "criteria": {
    "killed_zombies": {
      "trigger": "minecraft:impossible"
    }
  },
  "rewards": {
    "function": "achievements_plus:grant/zombie_hunter"
  },

  And tick.mcfuntion
  function achievements_plus:grant/zombie_hunter

  https://minecraft.wiki/w/Advancement_definition
  https://www.reddit.com/r/MinecraftCommands/comments/1jxrlye/cant_set_the_background_texture_of_custom/
  Thank you GalSergey, couldn't find this anywhere, it was changed in 1.21.6, from textures/block/<item>.png to block/<item>

  Changelog:
  Added the Slayer achievements tab (Currently tracking Zombie, Skeleton, Creeper, Spider and Enderman Kills)
  Moved the place of where the "String Age?" advancement is shown
  Added "glowing" subfolder to "others" and "stone_cutter" to "recipe" in "recipes_plus"
  All "glowing" recipes have only one common advancement unlocked by glowstone_dust, added glowing_ink to it as well

  Version 2.4
  Changed Version 2.1 in bibliografy to Version 2.3
  Removed background from "String Age?" advancement, moved to husbandry tab
  Deleted "glowing" and "horse_armors" subfolders in advancements/recipes/others
  Moved "glow_ink_sac" from "underwater" subfolder to "glowing" subfolder
  Changed the groups for raw_iron_block, raw_copper_block, raw_gold_block
  

  Changelog:
  Created "horse_armors" advancement, horse armors are now unlocked after a horse is tamed
  Removed rotten flesh to leather recipe
  Glowing recipes unlocked after glowstone_dust is found
  Block of quartz to quartz added in stone_cutter
  Amethys to purple glass in blasting
  Copy pot's sherds, one shred and 3 bricks


  Needs to be done:
  §
  horses_can_swim 
  chicken_shed

  Version 2.5
  Now works for 1.21.2-1.21.9
  "Monster Slayer" achievements removed, to be moved in an original datapack, 
  so I won't have to separate this datapack after 1.21.6, because of the achievements tab background
  Chicken now shed feathers, more than dropping eggs
  When the datapack is reloaded "horse_armors" and "glowStone_dust_recipes" advancements are revoked, 
  this way they may be made again if new recipes are added

  Version 2.6
  ADDed Moss and Pale Moss to the gallery
  "Get me back" collection extened: modified minecart can be turned back to regular ones, losing what's inside
  and minecarts can be converted fully back into iron_ingots
  All 5 recipes for minecarts are found in advancement\recipes\others\get_me_back\minecart.json
  The recipes are in recipe\others\get_me_back