Make AFW and BCG emphasis aware after refactoring

[pokutta]

After refactoring AFW and BCG we lost the memory awareness due to the subroutines. We should restore this. It is not that critical because both are hard on the memory anyways but it will still impact the speed of the iterations in particular, if we do not need to call the lmo.

[matbesancon]

Once #121 is merged I'll look into it, but the iterate in BCG is already in-memory (it exists only within the active set).

[pokutta]

Once #121 is merged I'll look into it, but the iterate in BCG is already in-memory (it exists only within the active set).

don't think this has to be a priority right now as we have to deal with memory of much higher order anyways. maybe mark as low priority.