Make scalar constraints and variables consistent

[ewu63]

Type of issue

What types of issue is it? Select the appropriate type(s) that describe this issue

• Bugfix (non-breaking change which fixes an issue)

Description

Update them so that a scalar value is just implemented using a numpy arary of size 1. This will unify the code and simplify many things.

[stale[bot]]

Is this still relevant? If so, what is blocking it? Is there anything you can do to help move it forward?

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.