Sigmax renormalization and distance on cued feature

- Add: Sigma_x can now be renormalized by the maximum network activation. May fail?
- Add: Can decide to enforce distance on the cued feature only, not on the others.
force sampling function
Plots to check experimental question from reviewers

- Add: Plot to check if there is a bias towards responding closeby items. It seems that yes, with a nice story around it.
Generators/reloaders for normalized sigmax