Still a lot of work to do. One thing to note is that I used LEGACY materials in a few spots where I didn't know what the new ones are as I'm not very familiar with the 1.13 update and what it changes.
- Dropped usage of deprecated methods for a cleaner future.
- Zombies no longer throw errors in SpawnMob due to setVillager(false).
- Removed MobData where they have been replaced with actual entities.
- Support new enchantments.
- Support new mobs.
- Rename MobData WHITHER_SKELETON to WITHER_SKELETON.
- implement NOOP methods of new API methods for fake classes.
- Amend item dictionary.