v0.0.9 - New machine tool, Tunnel furnace, and Small railway

Updates:

• The mouse cursor in the 3D world now stays within the game screen, while remaining free in the menu.
• Increased the height of the dialogue window.
• Increased font size.
• Reduced the number of NPCs.
• Added a new machine tool.
• Added a tunnel furnace.
• Added a narrow-gauge industrial railway.
• Added a depot with a trolley.
• Added new products and production chains.
• Fixed minor issues and made general improvements.