Adding in variance in do statistics function
Extra species and latex equations
Euler Forward

Euler Forward Stuff
Theory update and some data runs
Checking the variance of traps
Updated best code version and graphs.

Code has been updated that now does the avergering properly, this
should fix the issues that were being had with the anti trap
simulations not appearing to reach fixation. A couple of graphs have
also been created that need to be printed out.
Merge pull request #22 from MattDeanMPhys/FitnessVariations

Fitness variations