Update Commands with patches

src/main/java/com/volmit/iris/util/decree/handlers/BiomeHandler.java

@@ -56,6 +56,9 @@ public class BiomeHandler implements DecreeParameterHandler<IrisBiome> {
 
     @Override
     public IrisBiome parse(String in) throws DecreeParsingException, DecreeWhichException {
+        if (in.equals("null")) {
+            return null;
+        }
         try {
             KList<IrisBiome> options = getPossibilities(in);
 

src/main/java/com/volmit/iris/util/decree/handlers/RegionHandler.java

@@ -56,6 +56,9 @@ public class RegionHandler implements DecreeParameterHandler<IrisRegion> {
 
     @Override
     public IrisRegion parse(String in) throws DecreeParsingException, DecreeWhichException {
+        if (in.equals("null")) {
+            return null;
+        }
         try {
             KList<IrisRegion> options = getPossibilities(in);
 

src/main/java/com/volmit/iris/util/decree/handlers/WorldHandler.java

@@ -28,7 +28,13 @@ import org.bukkit.World;
 public class WorldHandler implements DecreeParameterHandler<World> {
     @Override
     public KList<World> getPossibilities() {
-        return new KList<>(Bukkit.getWorlds());
+        KList<World> options = new KList<>();
+        for (World world : Bukkit.getWorlds()) {
+            if (!world.getName().toLowerCase().startsWith("iris/")){
+                options.add(world);
+            }
+        }
+        return options;
     }
 
     @Override