Add Saved Design Objective Plotting Function

[jamesbevins]

Add option to plot the objective vs current evaluation for each saved design (i.e. each design that is better than the previously best found design).

[jamesbevins]

The original idea was to: Plot the objective vs current flux for every time the top member of a population changes. This is not very general. Is there a way to make it more general?

[jamesbevins]

I think the way to do this is to allow the user to specify a tally and the name/location of a user defined python plot function. I have a basic example of this used with Gnowee where I define objective functions separately and pass the objective function name as a function in the Gnowee arguments. The part I don't know is about passing a function that doesn't reside in the current directory.