Version 0.4.4 1st stage boss is implemented

• 1st stage boss is implemented.

It has high fire power multiple lasers and ballistic missiles, and very hard armor.💪😈🚀🚀🚀

If you beat it, you complete the first stage. Please take on the challenge!😄

2nd stage is not yet implemented.

Bug fixes

• Blasts of enemy's missiles had no damage detection.

Thank you!