Relict

Added:

• New surface shapes for Rusted Dunes and Fretted Mesas.
• Placeholder structures
  • Mars Portal Ruins in OW Dripstone and Sulfur Caves, and in all Mars cave biomes
  • Unmanned Wrecks on Mars
  • A ruin
• Overworld rains and thunderstorms no longer affect Mars sky
• Reduced gravity on Mars

Changes:

• Small cave tweaks
• A couple of voronoi optimizations