Middle-earth 1.5.1-1.21.1-alpha

Added the instant booting (at the price of having the mod file heavier as it comes with all the data)
Added 17 sub biomes and reworked many places that had misplaced or missing features
Added 13 pots & jars for decoration
Added treasure and coins piles (copper, silver and gold) as well as golden chalice
Added fir tree in many northern biomes, lavender, wild wheat, yellow trollius and some retextures
Added the Arkenstone!
Added alternative recipe for cauldron and bucket with tin
Added 10 advancements (and tweaked previous ones)
Added alternative fishing loot tables when in middle-earth
Added missing recipes for growth blocks, bricks, straw, etc.
Improved the rivers & lakes generation to be less deep
Updated the structures loot tables and few blocks
Tweaked the races according to the feedbacks (might get tweaked again later on depending on everyone's feedback and suggestions)
Modded flowers are now compatible with bees and have their dyes recipes
Flax recipe was buffed from 4 to 1 flax for 1 string
Fix two handed swap hand bug and shields & axes with the cooldown on damage.
Fix chairs bugs
Fix artisan table recipes
Fix mountains (the cuts should be fixed, or at least very rare)
Nerf goats and wargs damage by 2hp
Removed banners from creative tab (however a command was added as alternative for builders and to be data driven) And many more fixes that were reported!