Classical Art+ (1.21.9)

First major update in 8 months! This update is gigantic, and it brings support for three drops!

Block Textures:
*Fixed grass block texture rotation
*Removed random rotation for most blocks
*Added stained glass texture from JE 2.0 (April fools version)
*Added test block textures
*Added test instance block texture
*Added dried ghast textures
*Added copper chests textures
*Added exposed, weathered and oxidised lightning rod textures
*Added copper torch texture
*Added copper bars textures
*Added copper chains textures
*Added copper lanterns textures
*Added copper golem statues textures
*The stems of pink petals and wildflowers are now affected by biome tinting
*Glazed hardened clay now uses pre-1.12 colours
*Updated tuff blocks textures
*Updated calcite texture
*Updated deepslate blocks textures
*Updated firefly bush textures
*Updated leaf litter texture
*Updated stripped log textures
*Updated short and tall dry grass textures
*Updated lodestone textures
*Updated bamboo textures
*Updated barrel textures to be more consistent to spruce planks
*Updated sculk blocks textures
*Updated lapis block texture
*Updated sand and red sand textures
*Updated suspicious sand textures
*Updated copper ore textures (deepslate type included)
*Updated water and lava textures to closely match Java Edition Beta
*Removed old redstone torch model as the model is already present in the Programmer Art
*Fixed cocoa pod model

Item Textures:
*Spawn Eggs now use their old textures
*Spawn Egg textures are visible once again
*Fixed diamond chestplate texture
*Added happy ghast spawn egg texture
*Added harness item textures
*Added tears and lava chicken music disc texture
*Added copper golem spawn egg texture
*Added copper nugget texture
*Added copper horse armor textures
*Added copper armour and tool set textures
*Updated copper ingot texture

Entity Textures:
*Updated pig variants textures
*Updated panda textures
*Updated mooshroom textures
*Updated villager and zombie villager professions textures
*Updated warden textures
*Added copper golem textures
*Added happy ghast textures
*Added worn harness textures

Interface:
*Added a new cubemap background showcasing The Copper Age drop (Thanks to Seedformat)
*The advancements screen now have the correct stone and netherrack background textures
*The advancements screen background is now darker
*Added a grey overlay that apply on the title screen (pre-1.16)

Particles:
*Updated falling leaf particles textures
*Updated raid and trial omen particles textures

Sounds and Music:
*Plains music now plays in the title screen in addition to the original menu music
*Removed the music correction made in v1.2 because it is unnecessary and takes up a lot of space
*Shelves now uses wood sounds (for consistency with stripped logs)
*Placing and swapping items with shelves now uses item frame sounds (for consistency with item frames)
*Tall and short dry grass no longer have ambient sounds
*Cave sounds restricted to only play the original 13 sounds (the ones made by C418)

Language:
*Happy Ghast Spawn Egg is now "Spawn Happy Ghast"
*Copper Golem Spawn Egg is now "Spawn Copper Golem"
*Tears and lava chicken music discs rarity is now "rare" instead of "uncommon"
*Enchanted Books rarity is now "uncommon" instead of "rare" (pre-1.21.9)
*Fixed titles of the songs "Beginning", "Chris", "Équinoxe", "Excuse", "Flake", "Intro", "Ki", "Kyoto" and "Moog City" in the music toasts
*Closed Captions option is now "Show Subtitles" (pre-1.21.9)
*Chunk Builder option is now "Priority Updates" (pre-21w43a)
*Added new splashes

Technical:
*Updated pack format to 67