Better Double Slabs

NOTE: even if Minecraft says the pack is broken or incompatible, it will still work!

Adds variety to multiple existing blocks using custom textures for double slabs. Includes eight new brick blocks, including Chiseled Red Nether Bricks.

All new blocks as of release 1.0:

• Cracked Stone (double Stone Slab)
• Mossy Cracked Stone Bricks (double Mossy Stone Brick Slab)
• Mossy Stone (double Mossy Cobblestone Slab)
• Mossy Chiseled Stone Bricks (double Stone Brick Slab)
• Cracked Bricks (double Brick Slab)
• Six-sided Sandstone and Red Sandstone (double Sandstone / Red Sandstone Slab)
• Polished Andesite, Diorite and Granite Bricks (double Polished Slab of those types)
• Dark Prismarine Bricks (double Dark Prismarine Slab)
• New Prismarine Bricks alongside the old ones (double Prismarine Brick Slab)
• Chiseled Red Nether Bricks with a Strider head texture (double Red Nether Brick Slab)

Full credit to Vanilla Tweaks for the polished brick textures.