Set reorder=True per default.

[HenrikMettler]

Moves the boolean reorder_genome into population to check whether genome conditions (n_rows=1, levels_back=n_columns) for reorder=True are met.
I am not removing the possibility to configure this, since reorder is limited to certain genome parameter configurations.
Closes #347.

[jakobj]

good catch that we can not just remove the configuration option for reorder while we support multiple rows.

how do you feel about removing the possibility of setting n_rows and always use n_rows=1? my impression is that modern general purpose CGP anyways uses exclusively only one row but may columns, while multiple rows were historically used for evolving circuits.

[HenrikMettler]

yeah, i think I agree. Should we also remove levels_back? Atm I can't see any use case where anything but levels_back=n_columns is useful.

[jakobj]

yes, i think you're right, levels_back can also be removed. 👍

could you please create a separate PR, removing n_rows and levels_back? after that has been merged, we can come back to this one.