Use 3D CSS textures by default for blocks in get getItemTexture()

Requires deathcap/inventory-window@4ebc3c7658e48ec6318bb3dfac8ea7f1ef0bb835
Change to use arrays for block 3D textures

Requires deathcap/inventory-window@70aa2eff9931e846fb38743f6aa473016b8480e8
Add toarray dependency
Always use 3D cube textures for blocks, even if uses same texture on each side