v1.8.0

Packed with many new features, among which wind, air bubbles, and cloth material.

In detail:

• Added ability to specify ships' characteristics with multiple layers (structural, electrical, ropes)
  • Electrical properties can now be specified on top of any material - no more weak electrical cables!
• Added cloth material (sails and flags!)
• Added wind modulation, with gusts transferring momentum to cloth and rope materials
• Added tool to shape the ocean floor interactively
• Added air bubbles coming out from holes in a ship
• Added tool to flood and dry the interior of a ship
• Added ability to take screenshots directly from within the game
• Improved light diffusion, added more light types, and made lights vulnerable to becoming wet
• Redesigned entire buoyancy simulation (see https://gabrielegiuseppini.wordpress.com/2018/12/22/a-physics-puzzle/)
• Lowered friction of ships on the sea floor
• Fixed bug when mouse moves out of the game window while a tool is engaged