Saving features in Result class

Currently the method plot_walkers takes a save variable but does not use it. Same goes for the **kwargs

Also, can we remove the deprecated plot_walkers and plot_distributions methods, while we are at it?

Yes sure.

mentioned in commit 5ae14dc2

closed via commit 5ae14dc2

closed via commit 941724ae

closed via merge request !119 (merged)

mentioned in commit 941724ae