Many new modding improvements

core/src/mindustry/graphics/Layer.java

@@ -5,6 +5,9 @@ public class Layer{
 
     public static final float
 
+    //min layer
+    min = -11,
+
     //background, which may be planets or an image or nothing at all
     background = -10,
 
@@ -81,7 +84,10 @@ public class Layer{
     end = 200,
 
     //things after pixelation - used for text
-    endPixeled = 210
+    endPixeled = 210,
+
+    //max layer
+    max = 220
 
     ;
 }