Merge pull request #661 from CocoTheOwner/defaultHeadless

Make headless default

src/main/java/com/volmit/iris/core/IrisSettings.java

@@ -120,7 +120,7 @@ public class IrisSettings {
     @Data
     public static class IrisSettingsGenerator {
         public String defaultWorldType = "overworld";
-        public boolean headlessPregeneration = false;
+        public boolean headlessPregeneration = true;
         public int maxBiomeChildDepth = 4;
         public boolean preventLeafDecay = true;
     }