Demo 0.8.0 Update

Version 0.8.0 brings the demo up to date with many changes in the main game. The arcade missions are now mostly complete and a rebalancing across the entire game is required. It aims to make survivability easier for beginners and average players, while increasing the score potential for skilled players.
Demo 0.8.0 Update Notes:
- Rebalanced difficulty and scoring.
- It is easier to maintain max level and leveling up is slightly faster.
- Heavy enemies have lesser armor and should only feel like "bullet sponges" if the player chooses to remain at a low level for score.
- The point blank score bonus is inversely proportional to player level. Level 1 has the highest bonus.
- Increased the score bonus when collecting a bomb with a maxed out stock.
- Many new animations have been added.
- Changed some colors to improve visibility.