Zyps 0.6.1
Now includes zyps_server, a server that other Ruby interpreters can connect to and add Creatures.
Moved everything inside the Zyps module to avoid name collisions; just “include Zyps” at the top of your programs for access to everything. (Or use the fully-qualified names: “Zyps::Creature”, etc.)
Added PopulationLimit, Accelerator, Gravity, and Friction EnvironmentalFactors.
Better exception handling in various places.