Spectral

Small update this time! In preparation for 1.20 the crimson and jungle plank colors have been changed as they were too close to cherry and bamboo wood respectively

• updated crimson planks (+ other textures using it)
• updated jungle planks (+ other textures using it)
• added the old planks textures as the double slab texture

I'll be releasing an add-on pack that restores the old crimson and jungle planks textures, and adds the new textures as the double slabs. It now available over here.