Dynamic population size

[sheix]

There's a case when population consist of several similar groups of genotypes, that do not differ a lot. Removing similar or same solutions from population should result in more genetic variety.

To do this:

1. Population size should be variable and not constant
2. Any calculations should be done accordingly
3. Additional step should be introduced - removing similar(same) elements - design - as observer called each generation, on end of all other operators.