v0.3.0

feature: forced selected nodes

Allow user to define specific nodes that must be part of the solution.

- add forced nodes setup UI using exploration strings search
- update graph data generation to utilize a virtul super root
- update model to force flow from force selected nodes to super root

UI: fixups for bonus lodging

- dump bonus limit by 1 for all towns for Resplendent Workers Lodging
- limit region name lookup to affiliated towns only
- make overage bonus values allowable with warning