Elaborate EvoLife example model

[a5kin]

Let apply the same approach as we did with GameOfLife example in 0.1. So, first we should have the model ready with all features in places. All new classes should have appropriate interface raising NotImplementedError.
This will give us a good chance to think about the exact set of new features we need, give them proper names and put them to proper places in the package architecture.

[a5kin]

Let consider EvoLife model's mockup is ready. It is surely far from complete and a subject to multiple changes during the process of development. We'll add meta-params later, along with the other features implementation. Coverage is broken until the next stage, we have to cover every aspect of the new functionality as a primary goal.