To get this update, you have to opt in inside your library:
Necesse -> Properties -> Betas -> Select 0.20.x in dropdown.
v. 0.20.0
- Added polar bears to snow biome.
- Added polar claw trinket.
- Added wall torches.
- Added attack animation to vampire.
- Added goblins that spawn in caves.
- Increased ninja stars drop amount from ninjas.
- Some other smaller changes.
You might have to restart Steam to get the update.