Improved version

• Fixed bug where time would not be accounted
• Fixed bug where there was no extra reward for filling box more than you should
• Fixed box placement bug
  
• Fixed animation glitch with delivery box
  
• Added mouse support for menus
• Added icons for truck status
• Added tutorial
  
• Added game status UI
  
• Changed grid size to 6x6
  
• Improved UI for packing station
• Improved packing cursor movement
• Better camera position
  
• Improved performance