v0.8 Alpha 1: Cardboard Masks

We've reached a major milestone! The entirety of the "Building Blocks" tab in the Creative inventory is now completely 2D!

Here's what's new:

• Added a custom item for the Amethyst Cluster (not the other stages yet, though)
• Added Barrel
• Added Concrete Powders
• Added Brain, Bubble, Fire, Horn, and Tube Coral Blocks, along with their dead variants
• Added a fancier Pointed Dripstone sprite
• Added Grindstone (might redraw—for now, it's flat like the Bell and Campfires and Lanterns, but it doesn't fit as well with the other items)
• Added Stonecutter (also flat like the Grindstone)
• Touched up Prismarine Bricks
• Shifted the block model on the player's head so that Carved Pumpkins look kinda like masks instead of banners