Relight after completing P2 operations

teporarily fix #629

worldedit-core/src/main/java/com/boydti/fawe/object/RelightMode.java

@@ -1,7 +1,32 @@
 package com.boydti.fawe.object;
 
+import java.util.HashMap;
+import java.util.Map;
+
 public enum RelightMode {
-    NONE, // no relighting
-    OPTIMAL, // relight changed light sources and changed blocks
-    ALL // relight every single block
+    NONE(0), // no relighting
+    OPTIMAL(1), // relight changed light sources and changed blocks
+    ALL(2); // relight every single block
+
+    private static final Map<Integer, RelightMode> map = new HashMap<>();
+
+    static {
+        for (RelightMode mode : RelightMode.values()) {
+            map.put(mode.mode, mode);
+        }
+    }
+
+    private final int mode;
+
+    RelightMode(int mode) {
+        this.mode = mode;
+    }
+
+    public static RelightMode valueOf(int mode) {
+        return map.get(mode);
+    }
+
+    public int getMode() {
+        return mode;
+    }
 }