Alpha 18 Update - More Ship Types, Blackholes and Code Cleanup

For the most part I forgot to actually keep a list of changes for this update, had to make this after I got everything ready to actually update the game.

• Redid planet production calculations so that no productions is wasted, and instead is transferred over to the future (impacted cloning and industries, slight impact on tech)
• Redid the way that the game determines what stars are within range
  • Now shows how far a planet is if it is unexplored.
  • The new method is actually a lot similar to how the game used to do the calculation, but now it caches the calculations which saves a lot of processing which was an issue in the past
• Added a new ship called the Troop Transport. It comes prepacked with 5 Military units, allowing it to assault planets.
• Redid a lot of the code to split the logic of plant/stars into 2 separate entities. Up until recently planets were stars. Now planets are separate entities that exist in the star.
  • This allows for stars to have more than one planet in theory. In practice this does not actually occur, as All UI is designed for a single planet per star
• Added in a Map Designer/Editor
  • Custom Maps can be loaded if they exist, home planets can override some of these stars/planets
  • Mostly a byproduct of me needing an in-game menu for changing star/planet variables for testing stuff. I already made the menu for editing planets, and that is like 90% of the work needed for a custom map editor
  • Will allow for scenarios and a scenario Editor to be added later
• Added black holes
  • Still need to add in some extra custom planets for black holes
  • Intend to add wormholes next for a custom map Idea I had
• Made Many improvements to multiple other sections of the code
• Also added a few other minor features
• Improved the code to some of the mini games (also did some work on new ones but yet to finish)
• Also had a few failed additions that had to be removed as they added way to much complexity to the systems
  • Example: Wanted to allow planets to have more than one population, with some conquered pops staying on the planet
  • This did actually work, but caused a massive headache trying to figure out what the pop cap on the planet should be
  • This might be useful for a future game, as a game more similar to orion 2 is possible now with fewer changes to the code needed
• Made some minor improvements to the way the game gathers data, which could have a positive impact on late game performance
  • I don't think the game has many performance issues in general. In performance mode the game can run on an ancient macbook without issue (does need a special mac build with opengl enabled, too much of a pain to do regularly right now)
• Fixed issues with ships being shown when they should not be
• Fixed issues where a invisible ship can be clicked on and viewed
• Fixed some issues with bombing planets
• Bombing planets now damages Military population as well as civilian population
• AI can now bomb planets again
• Made some other improvements to the AI
• Fixed a lot of other bugs in the game code