Plague 3.05

• Deleted unused game_states
  
• updated ReadMe for typos
  
• removed grenade dropping when player is dead/None (only added for my testing)
  
• randomised shrub health
  
• made zombie_hives bleed when shot
  
• decreased gauss_rifle_bullet so it doesnt destory concrete_blocks instantly
  
• fixed square_project so it doesnt automatically stop all things
  
• decreased grenade health to 0.5seconds – more satisfying
  
• increased normal and fast zombie speeds
  
• decreased normal and massive zombie melee arcs
  
• investigated massive zombies seemingly not taking damage – no error found
  
• battle would not restart (while True loop with no exit) - fixed