Job Talle

Emscripten does provide memory management functions for this, they're used [in embox2d-helpers.js](https://github.com/kripken/box2d.js/blob/master/helpers/embox2d-helpers.js) which creates chain and polygon shapes.

Alternatively, thickness can correlate with spring strength, meaning very long thin tentacles are possible (although they may not be useful).

A fool proof way would be to add a separate file to the save directory containing version info.

Possibly color mutations only

Additional info: https://steamcommunity.com/app/1518810/discussions/0/2963922521572715771/  

Note that the top left fish changes fin positions.

Poor generations can accidentally leave good agents unrewarded, the selector should not just award one agent.

Food intake should correlate with tentacle movement * tentacle size

Requires #7

Still occurs sometimes