Alacrity

This is a big resource pack update with a lot of important changes. At some point I stopped recording all the changes, so there won't be a detailed changelog.

Main points:

• Gave up curved upper stairs and 1/4 slabs. They're cool, but they don't mate well with the absolutely terrible vanilla lighting engine + cause a lot of problems for players who are used to vanilla building patterns or for custom worlds. These things will come back, maybe in a separate addon, but most likely as part of some mod support. (By the way, this change will help raise fps). Stairs and Slabs affected for: Cobblestone, Mossy Cobblestone, Cobbled Deepslate, Prismarine, Bricks, Nether Bricks, Red Nether Bricks, Sandstone, Red Sandstone.
• Full support for new textures for Armor Trims
• MANY mobs texture. (some still WIP, CEM still WIP)
• Support for 1.20 update, except GUI changes in 1.20.4 (Mojang, plz stop making structural changes in minor versions)
• Sandstone and Red Sandstone rework - more interesting and detailed textures
• Wooden Planks rework (again)
• Many CTM fixes
• Done missing particles
• Done missing environment textures (clouds, snow, moon, etc)
• Many other small changes