1. Temporarily removed Nether Shield blocks. Might consider removing the whole concept. 2. Added animated texture for Pillar Block. Made it un-selectable. Might consider merging gateway and pillar into single meta-block
Pillar is now a sub-block of common gateway meta-block
1. Sub-block classes have different materials 2. Added isNormalBlock delegation to sub-blocks - allows them to be solid independently
Meta-block refactoring: 1. No more manual meta-id assignment 2. All meta-parts must extend MetaPart trait, which provides self-id and enclosing meta-block reference
Dropped shielding textures. Need to find something fancier for pillar