Visible costing in many places

src/skills.ts

@@ -68,6 +68,12 @@ class SkillsTable {
       ),
     );
   }
+
+  isAtMinimum(skill: Skill) {
+    let minimumCost = this.get(skill).governing.cost
+    let currentCost = this.computeCost(skill);
+    return currentCost <= minimumCost;
+  }
 }
 
 function geomInterpolate(