The Erebus

Fixes:
- Fixed Horrible lag for the Antlion Overlord boss fight.
- Fixed the Beetle advancement triggering on any damage taken.
- Fixed some ancient Z-fighting issues on some of our models.
- Fixed Armour values for Chestplates and Leggings being reversed.
- Fixed Stag Beetle's mining ability from breaking Bedrock.

Additions:
- Added back Dimension re-spawning (configurable) defaults to portal keystone location.
- 3D models for a variety of our mushrooms.
- Double-height 3D plants, including replacing vanilla tall ferns with our own.
- Giant Petrified Logs & associated blocks.
- Two variants of Petrified Trees of 3 different sizes each.
- Acid Rivers in the Petrified Forest.
- Petrified Quartz, an ore found embedded in the Petrified trees sporadically, drops regular Quartz.
- Added Armour Toughness values.
- Tweaked spawning rule for Black widows in Nether.

Changes:
- More texture changes and updates.
- All spawn egg colours have been changed to be more appropriate.
- Reduced Glowshroom growth speed by about half.