Gives fish a chance of producing offspring if they bump into another fish.
Will only work if there are less than 250 fish swimming around.
This allows for slow re-population of fish on Nauvis.

Latest Changes:
0.6.0: Massive UPS improvements on worlds with more fish, added settings menu.
0.5.0: Actually made it working now.
0.4.0: Removed a limiter, as it was breaking stuff.
0.3.0: Changed values.
0.2.0: Added limiters as lag was massive with big amounts of fish.
0.1.0: Release.