Atmospheric Fauna

Changes:

• Added "Spawning on Chunk Load" and "Ambient Spawning" config options
• Added minimum values to the config options (to prevent user inputting negative values)
• Changed some of the flocking behavior
• Changed crow take off to be more smooth
• Lowered crow wing flapping speed when rising
• Optimized a bunch of small things
• Fixed crow spawning when crow limit number in config was really low
• Fixed crow sprite not updating when going fast upwards
• Fixed possible crashes
• Fixed small memory leak