v0.18.0 - Mothership Shield

v0.18 is released!~

The mothership now deploys a shield at 1 HP, and can only be destroyed by The Last Fuse, the final bomb tier that will arrive in the Islands Update.

A few improvements have been made to the underwater biome.

Changelog:

• Add dive button on Nautilus
• Add return to land button when underwater
• Mothership now shields itself at 1 HP and is only destroyable via Last Fuse
• Fix cores and artifacts showing as consumable item
• Fix being able to damage enraged mothership without Last Fuse
• Fix negative mothership HP