More PowerEntry work.

src/engine/wpak/PowersParser.java

@@ -154,7 +154,7 @@ public class PowersParser {
                         powerAction.effect_id = arguments[0];
                         powerAction.minTrains = Integer.parseInt(arguments[1]);
                         powerAction.maxTrains = Integer.parseInt(arguments[2]);
-                        powerAction.duration = Integer.parseInt(arguments[3]);
+                        powerAction.duration = Float.parseFloat(arguments[3]);
                         powerAction.curve = mbEnums.CompoundCurveType.valueOf(arguments[4]);
                         powerAction.stackingCategory = arguments[5];
                         powerAction.stackingPriority = Integer.parseInt(arguments[6]);

src/engine/wpak/data/PowerAction.java

@@ -15,7 +15,7 @@ public class PowerAction {
     public String effect_id;
     public int minTrains;
     public int maxTrains;
-    public int duration;
+    public float duration;
     public String stackingCategory;
     public mbEnums.CompoundCurveType curve;
     public int stackingPriority;