Update #3

Here's update #3, a little earlier than usual as I'm taking a few days holiday with the family from tomorrow.  It also means it'll be a little longer to update #4, but I'll make sure that update is bigger than usual.  So this update's change log:

• // 2017.08.14 - added 10 kg mass accelerator part
  
  • This is the first BIG gun in the game - it's not very accurate, but can deliver a killer blow to enemies.
• // 2017.08.14 - added direction marker for planets.
  
  • This allows you to select a planet from the map along the bottom and it shows you whih direction to head in.
• // 2017.08.14 - added mouse scroll zooming.
  
  • Added to improve the game play.
• // 2017.08.16 - changed crew speech and interaction.
  
  • This is the first step to having proper crew dialogue.  So far I've only implemented a very basic set up where crew will state basic information, but the next update will include the start of conversations.
• // 2017.08.16 - fixed bug with part upgrades.
  
  • What it says really - it wasn't working - it is now.
• // 2017.08.16 - reversed order of messages to ensure latest is at the top.
  
  • Nothing cleaver, it just works better now.
• // 2017.08.17 - changed collected items to be displayed as messages rather than a pop-up.
  
  • I figured the drop down card was a bit pointless and didn't make much sense so the collected items are now declared as messages.
• // 2017.08.17 - changes how parabolic orbits are drawn
  • Previously only half an orbit was drawn when it was parabolic, so I've corrected this now.