[Bleeding] Add APIs for editing biome data. Addresses BUKKIT-1075

src/main/java/org/bukkit/block/Block.java

@@ -231,6 +231,13 @@ public interface Block extends Metadatable {
      */
     Biome getBiome();
 
+    /**
+     * Sets the biome that this block resides in
+     *
+     * @param bio new Biome type for this block
+     */
+    void setBiome(Biome bio);
+
     /**
      * Returns true if the block is being powered by Redstone.
      *