To all resource pack makers: in 1.13 pre-3 the folders for block and item textures are renamed to "block" and "item". And model names in blockstates now require "block/". Enjoy rewriting all
Top 10 Best Minecraft Texture & Resource Packs for 1.13, 1.13.1 & 1.13.2 - PwrDown
MInecraft 1.13 Redstone display issue in Resource Pack - Arqade