Added creature generator, clone destroyer
Created trigger layer

bug fixes:
Added more layers to the player's not allowed to jump bitmask
Moved various items that were causing issues with collisions to the trigger layer where everything ignores except player
Removed player vs player collision with clones
Limited the clones ability to wreak havoc on the platforms by forcing them into an area without platforms
Fixed upside down shooting issue (layer collision problem)
Added public inspector fields for enemies to set each one differently
Set the prefabs of enemies to certain levels to make some more difficult than others.
Fixed overflow bug in health cheat by setting it 200 lower than int.MaxValue (health powerup was still being added before checked)