Update 1.3 - Speed Button and Wave Balancing

Gameplay Adjustments:

• Increased the minimum time between waves to 75 seconds if fewer than 7 waves have passed.
• Made zombies spawn slightly less frequently during the early game.
• Made zombies spawn even further apart during huge waves to prevent large groups.
• Reduced the spawn frequency of Ninja Zombies.
• Capped the maximum number of zombies per wave at 85.
• Added a speed-up button, allowing the game to run at 2× speed.
• Prevented zombies from spawning in a lane for 25 seconds if a lawnmower is triggered on it.

Bug Fixes:

• Fixed a bug that would cause the Cherry Bomb to explode in the incorrect position.

UI & Visual Improvements:

• Completely revamped the title screen.