Encode GVGAI levels with CPPNs: Interactive evolution

Try this with a specific game first, like Zelda, and then try moving on to games in general. Encode a CPPN to output different sprite types for each x/y coordinate, and display a preview of the levels in the interactive evolution interface. When a level is clicked, the user plays it. Levels that are selected when "Evolve" is clicked produce offspring for the next generation, as usual.