Naming of number_of_variables

[nikohansen]

I have the feeling that, in the end, the verbose number_of_variables is probably less helpful than using simply dimension as an abbreviation for search_space_dimensionality (the cocoex.Problem class provides a dimension attribute too). In the given context, I suspect this has little room to lead to confusion (and number_of_dimensions is not at all confusing compared to number_of_number_of_variables or number_of_variables when it is supposed to mean number_of_number_of_variables.

[olafmersmann]

I would be fine changing this if we also have a good alternative to number_of_objectives so the naming stays consistent.

[nikohansen]

Nothing comes in mind 😒