Version 29 Update

Hello! Today I worked on the following implementations:

• Dynamic Difficulty
  
  • Players will now have their difficulty reflect on the score points!
  • When a player scores 1000 points, the spawn cool-down for enemies reduces by 0.25
  • The minimum cool-down is set to 0.5 seconds
• Update on Invincibility handling
  
  • I updated the logic so that it makes the code smaller and more maintainable
  • there is also a very slight improvement on performance as a result

Future Updates may include more features, power ups or even a Boss Fight every 10K score or so. I will need to make a plan about how I will approach all of these Ideas, stay tuned.