Java Edition 18w07b

18w07b is the nineteenth snapshot released for 1.13.

Additions

 * Added the block tag.
 * Added the block and item tags:, and.

Changes

 * Oxygen no longer regenerates instantly out of water
 * Renamed "Turtle shell piece" to "Scute"
 * Dried kelp blocks are now flammable
 * Mobs are no longer able to spawn or replenish their breath in kelp and sea grass
 * Breeding of turtles now requires sea grass instead of raw cod.
 * Nerfed upward bubble column item movement speed